Method and system for preparing high-density high-strength large-size quartz crucible

Abstract

The invention discloses a high-density high-strength large-size quartz crucible preparation method and system, and relates to the technical field of quartz crucible production. The method comprises the following steps: if a current to-be-detected index meets a standard detection parameter requirement and a detection mechanism corresponding to a next to-be-detected index is in a working state, detecting the next to-be-detected index; if the number of the detection mechanisms is larger than 1, storing the current quartz crucible finished product in a crucible cache area between the detection mechanism corresponding to the currently detected to-be-detected index and the detection mechanism corresponding to the next to-be-detected index, and if the detection mechanism corresponding to the next to-be-detected index corresponding to any finished product is switched to be in an idle state and the number is larger than 1, detecting the current quartz crucible finished product. If yes, screening the quartz crucible finished product with the longest waiting time in the finished products with the largest number of the same identification numbers as a target to-be-detected finished product for detection, and packaging and warehousing the target to-be-detected finished product when all the to-be-detected indexes meet the standard detection parameter requirements; and the qualified rate of finished products is improved.

Description

Technical Field

[0001] The present application generally relates to the field of quartz crucible production technology, and specifically relates to a method and system for preparing a large-sized quartz crucible with high density and high strength. Background Art

[0002] Quartz crucibles, as core equipment for pulling large-diameter single crystal silicon, play an irreplaceable role in the semiconductor, photovoltaic, and other fields. The performance of quartz crucibles directly impacts the quality and production efficiency of single crystal silicon. Currently, 18-inch and 20-inch sizes are common, but with the advancement of semiconductor chip manufacturing processes and the trend toward larger photovoltaic silicon wafer sizes, demand for quartz crucibles of 22 inches and above is growing.

[0003] However, the large size of these quartz crucibles places higher demands on their production, necessitating testing of finished products to ensure their performance meets operational requirements. However, existing large-scale quartz crucibles rely primarily on manual testing equipment for inspection. The handling and positioning of large-scale quartz crucibles is time-consuming and labor-intensive, and manual recording of inspection data is prone to errors. Therefore, we propose a method and system for preparing large-scale, high-density, high-strength quartz crucibles to address these challenges. Summary of the Invention

[0004] In view of the above-mentioned defects or deficiencies in the prior art, it is desired to provide a method and system for preparing large-sized quartz crucibles with high density and high strength, which can improve the qualified rate of finished products and achieve stable and efficient production.

[0005] In a first aspect, the present application provides a method for preparing a large-sized quartz crucible with high density and high strength, the method comprising the following steps: Obtaining identification numbers of finished quartz crucibles and their corresponding indicators to be detected, as well as detection durations and detection complexity parameters for the indicators to be detected; classifying the indicators to be detected corresponding to detection durations within the same preset duration interval into the same detection level, obtaining a first ranking of the detection levels based on the detection complexity parameters corresponding to each detection level, and obtaining a second ranking corresponding to each indicator to be detected based on the first ranking and the detection duration of each indicator to be detected within each detection level; Determining, based on the identification number, standard inspection parameter requirements for the finished quartz crucible, testing each of the indicators to be tested of the finished quartz crucible according to the second sorting; if a current indicator to be tested meets the standard inspection parameter requirements and a testing mechanism corresponding to a next indicator to be tested is in an operating state, storing the current finished quartz crucible in a crucible cache area between a testing mechanism corresponding to a currently tested indicator to be tested and a testing mechanism corresponding to a next indicator to be tested, and recording a crucible waiting time and the number of crucibles corresponding to each identification number in the current crucible cache area; If the detection mechanism for the next indicator to be detected corresponding to any quartz crucible finished product in the crucible buffer area is switched to an idle state, the quartz crucible finished product is used as the target finished product to be detected; and when the number of the target finished products to be detected is greater than 1, the quartz crucible finished product with the longest waiting time among the target finished products to be detected with the largest number of the same identification number is selected and transferred to the detection mechanism in the idle state for detection, and it is determined whether the indicator to be detected meets the standard detection parameter requirements; When all the indicators to be tested of the finished quartz crucible meet the requirements of the standard testing parameters, it is packaged and put into storage.

[0006] According to the technical solution provided in this application, the indicators to be tested include at least size, surface quality, internal defects, volume density and bending strength; the preset time intervals include at least a first time interval, a second time interval and a third time interval; the end values ​​of the first time interval, the second time interval and the third time interval increase one by one; The detection device includes a size detection mechanism, a surface quality detection mechanism, an internal defect detection mechanism, a density detection mechanism, and a high-temperature performance detection mechanism; and a crucible buffer area is provided between two adjacent detection mechanisms, and the crucible buffer area is used to store finished quartz crucibles waiting for detection; the size detection mechanism is used to detect the size of the finished quartz crucibles, and the surface quality detection mechanism is used to detect the surface quality of the finished quartz crucibles; the internal defect detection mechanism is used to detect cracks and pores in the finished quartz crucibles, and the density detection mechanism is used to detect the volume density of the finished quartz crucibles; the high-temperature performance detection mechanism is used to detect the bending strength of the finished quartz crucibles; Classifying the indicators to be detected corresponding to the detection durations within the same preset duration interval into the same detection level, obtaining a first ranking of the detection levels according to the detection complexity parameter corresponding to each detection level, and obtaining a second ranking corresponding to each indicator to be detected according to the first ranking and the detection duration of each indicator to be detected within each detection level, specifically comprising the following steps: Obtaining the detection time and detection complexity parameters of the size detection mechanism, the surface quality detection mechanism, the internal defect detection mechanism, the density detection mechanism, and the high-temperature performance detection mechanism corresponding to each of the indicators to be detected; Obtain the indicator to be detected whose detection duration is within the first duration interval and mark it as a first detection level, obtain the indicator to be detected whose detection duration is within the second duration interval and mark it as a second detection level, and obtain the indicator to be detected whose detection duration is within the third duration interval and mark it as a third detection level; Determine a level complexity parameter according to the detection complexity parameters corresponding to the indicators to be detected at the same detection level, and sort the detection levels in ascending order according to the level complexity parameters to obtain a first sorting; In the first sorting, the indicators to be detected in each detection level are sorted from small to large according to the corresponding detection time, so as to obtain a second sorting corresponding to each indicator to be detected.

[0007] According to the technical solution provided in this application, obtaining the identification number of the finished quartz crucible and its corresponding indicators to be tested specifically includes the following steps: If it is determined based on the identification number that the application scenario of the finished quartz crucible is a first risk scenario, the size, surface quality, internal defects, volume density, and bending strength are all used as the indicators to be tested; When it is determined, based on the identification number, that the application scenario of the finished quartz crucible is a second risk scenario, and the number of finished quartz crucibles with the same identification number that were previously tested for volume density is less than a preset number, size, surface quality, internal defects, and bending strength are used as the indicators to be tested; The standard detection parameter requirement for the volume density of the first risk scenario is higher than the standard detection parameter requirement for the volume density of the second risk scenario.

[0008] According to the technical solution provided in this application, the following steps are also included: If it is determined that the volume density currently being tested does not meet the standard test parameter requirements, adjusting the value of the preset number; If it is determined that the volume density of the next test still does not meet the requirements of the standard test parameters, it is determined that there are abnormal problems in the processing technology data and equipment operation status of each unit of the preparation device, and the corresponding preparation device is shut down for maintenance, and the preparation device after maintenance is used to produce a preset number of test products; and the value of the preset number is set to 1 to test the volume density of all the test products until the volume density test pass rate is greater than or equal to the target pass rate, and then the normal production of the preparation device is resumed.

[0009] According to the technical solution provided in this application, the following steps are also included: Obtaining a historical test data set corresponding to the finished quartz crucible; the historical test data set at least includes historical volume density test data and historical bending strength test data of all finished quartz crucibles in the same production batch that have been tested and meet the standard test parameter requirements; Calculating a correlation coefficient between bulk density and flexural strength based on the historical bulk density test data and the historical flexural strength test data in the historical test data set, and determining a risk threshold for bulk density based on the correlation coefficient; If the current volume density of the finished quartz crucible is less than or equal to the risk threshold, a detection prompt message is generated; the detection prompt message is used to indicate that there is an abnormal risk in the bending strength of the finished quartz crucible; If the tested bending strength of the finished quartz crucible meets the standard test parameter requirements, the bending strength of the finished quartz crucible is subjected to a secondary test to determine whether the secondary test result is consistent with the tested bending strength of the finished quartz crucible. If they are consistent, the volume density is tested again. Calculate the difference between the volume density of the secondary test and the volume density of the finished quartz crucible that has been tested. If the difference is less than the error density setting value, it indicates that the volume density test is correct and the risk threshold is updated.

[0010] According to the technical solution provided by this application, the method further includes the following steps: If the total number of crucibles in the crucible cache area between the detection mechanism corresponding to the currently completed indicator to be detected and the detection mechanism corresponding to the next indicator to be detected is greater than or equal to the target crucible cache number and the detection mechanisms corresponding to the next indicator to be detected of all quartz crucible finished products in the crucible cache area are in a working state, the transfer speed between the detection mechanism corresponding to the currently completed indicator to be detected and the current crucible cache area is adjusted to extend the time it takes for the quartz crucible finished products to arrive at the current crucible cache area.

[0011] According to the technical solution provided by the present application, adjusting the transfer speed between the detection mechanism corresponding to the currently detected indicator to be detected and the current crucible buffer area specifically includes the following steps: Obtaining the operating speed of the transfer device between the detection mechanism corresponding to the currently detected indicator to be detected and the current crucible cache area; and determining an initial adjustment range of the transfer speed of the transfer device based on the ratio by which the total number of crucibles in the crucible cache area exceeds the target crucible cache number; Obtain the workload condition of the detection mechanism corresponding to the next indicator to be detected. If the detection time corresponding to the workload condition exceeds the preset detection time, the initial adjustment amplitude and the preset adjustment amplitude are superimposed as the final adjustment amplitude, and an adjustment instruction is sent to the transfer equipment; the adjustment instruction carries the final adjustment amplitude, so that the transfer equipment runs at the transfer speed adjusted by the final adjustment amplitude.

[0012] According to the technical solution provided in this application, the method is applied to a quartz crucible preparation system, which includes a data monitoring module in communication with a preparation device and a detection device, and the data monitoring module is used to monitor the production progress of the preparation device and the total number of crucibles in the crucible buffer area between the preparation device and the detection device in real time; The method further comprises the following steps: When it is determined that the total number of crucibles in the crucible cache area between the detection device and the preparation device is greater than or equal to the target crucible cache number, the transfer speed between the sandblasting unit and the current crucible cache area is adjusted to extend the time it takes for the finished quartz crucible to reach the current crucible cache area.

[0013] According to the technical solution provided by this application, the method further includes the following steps: The processing data and equipment operating status of each unit of the preparation device are collected in real time. If the processing data and / or the equipment operating status exceed the allowable fluctuation range, an alarm prompt message is issued and the corresponding preparation device is shut down.

[0014] In a second aspect, the present application provides a system for preparing a large-sized quartz crucible with high density and high strength, which is used to implement the above-mentioned method for preparing a large-sized quartz crucible with high density and high strength, characterized in that the system comprises: Multiple preparation devices and a detection device; each preparation device includes a feeding unit, a melting unit, a sandblasting unit and a cleaning unit; the feeding unit is used to pre-treat the raw materials and transfer them to the melting unit; the melting unit is used to evacuate and melt the pre-treated raw materials to obtain a semi-finished quartz crucible; the sandblasting unit is used to spray a barium coating on the inner wall of the semi-finished quartz crucible to obtain a finished quartz crucible; the detection device is used to detect the finished quartz crucible; A control unit, the control unit being in communication with the preparation device and the detection device, the control unit being configured to detect and control the operating states of the preparation device and the detection device in real time; The control unit is further configured to determine the corresponding standard detection parameter requirements and a second sorting according to the identification number of the finished quartz crucible prepared by the preparation device and the corresponding indicator to be detected, and to detect each of the indicators to be detected of the finished quartz crucible according to the second sorting. If the current indicator to be detected meets the standard detection parameter requirements and the detection mechanism corresponding to the next indicator to be detected is in a working state, the current finished quartz crucible is stored in a crucible cache area between the detection mechanism corresponding to the indicator to be detected that has been currently detected and the detection mechanism corresponding to the next indicator to be detected, and record the crucible waiting time and the current crucible cache time. the number of crucibles corresponding to each identification number in the area; if the detection mechanism of the next indicator to be detected corresponding to any quartz crucible finished product in the crucible cache area is switched to an idle state, the quartz crucible finished product is used as the target finished product to be detected; and when the number of the target finished products to be detected is greater than 1, the quartz crucible finished product with the longest waiting time among the target finished products to be detected with the same identification number is selected and transferred to the detection mechanism in the idle state for detection, and it is determined whether the indicator to be detected meets the standard detection parameter requirements; when all the indicators to be detected of the quartz crucible finished product meet the standard detection parameter requirements, it is packaged and put into storage.

[0015] It can be seen from the above technical solution that this application has at least the following beneficial effects: The present application discloses a method for preparing a large-sized quartz crucible with high density and strength, comprising: obtaining an identification number of a finished quartz crucible and its corresponding indicator to be detected, as well as a detection time and a detection complexity parameter of the indicator to be detected, dividing the indicators to be detected corresponding to the detection time in the same preset time interval into the same detection level, obtaining a first ranking of the detection levels according to the detection complexity parameter corresponding to each detection level, obtaining a second ranking corresponding to each indicator to be detected according to the first ranking and the detection time of each indicator to be detected in each detection level; determining the standard detection parameter requirements of the finished quartz crucible according to the identification number, detecting each indicator to be detected of the finished quartz crucible according to the second ranking, and if the current indicator to be detected meets the standard detection parameter requirements and the detection mechanisms corresponding to the next indicator to be detected are all in working state, then the current indicator to be detected is detected. The previous quartz crucible finished product is stored in a crucible cache area between the detection mechanism corresponding to the currently completed indicator to be detected and the detection mechanism corresponding to the next indicator to be detected, and the crucible waiting time and the number of crucibles corresponding to each identification number in the current crucible cache area are recorded; if the detection mechanism corresponding to the next indicator to be detected corresponding to any quartz crucible finished product in the crucible cache area is switched to an idle state, the quartz crucible finished product is used as the target finished product to be detected; and when the number of target finished products to be detected is greater than 1, the quartz crucible finished product with the longest waiting time among the target finished products to be detected with the largest number of the same identification number is selected and transferred to the detection mechanism in the idle state for detection, and it is determined whether the indicator to be detected meets the standard detection parameter requirements; when all the indicators to be detected of the quartz crucible finished product meet the standard detection parameter requirements, it is packaged and put into storage.

[0016] This application determines the standard inspection parameter requirements based on the identification number to accurately control the quality standards of each quartz crucible. At the same time, the first and second rankings are determined according to the inspection time and inspection complexity, and the indicators with high inspection time and low complexity are given priority to reduce the overall inspection time. For example, the size and surface quality inspection time are long, so they are inspected first, and obviously unqualified products are quickly screened out to avoid the waste of subsequent complex inspection resources. In addition, when the inspection mechanism of the next indicator to be inspected corresponding to any quartz crucible finished product in the crucible cache area is switched to an idle state, the quartz crucible finished product is used as the target finished product to be inspected; and when the number of target finished products to be inspected is greater than 1, the quartz crucible finished product with the longest waiting time among the target finished products with the largest number of the same identification number is screened for inspection, thereby improving equipment utilization and making the inspection process smoother and more efficient. BRIEF DESCRIPTION OF THE DRAWINGS

[0017] Other features, objects and advantages of the present application will become more apparent from the detailed description of non-limiting embodiments made with reference to the following drawings.

[0018] Figure 1Schematic diagram of the structure of the quartz crucible preparation system.

[0019] Figure 2 It is a schematic diagram of the structure of a single preparation device and a detection device.

[0020] Figure 3 The figure is a flow chart of the method for preparing large-sized quartz crucibles with high density and high strength.

[0021] Figure 4 Flowchart for obtaining the second sorting.

[0022] Figure 5 A flow chart for obtaining the identification number of a finished quartz crucible and its corresponding indicators to be tested.

[0023] Numbers in the figure: 1. Preparation device; 2. Testing device; 3. Feeding unit; 4. Melting unit; 5. Sandblasting unit; 6. Cleaning unit; 7. Dimension detection mechanism; 8. Surface quality detection mechanism; 9. Internal defect detection mechanism; 10. Density detection mechanism; 11. High temperature performance detection mechanism; 12. Data monitoring module; 13. Transfer equipment. DETAILED DESCRIPTION

[0024] The present application will be further described in detail below with reference to the accompanying drawings and examples. It should be understood that the specific embodiments described herein are merely for the purpose of explaining the relevant invention and are not intended to limit the invention. It should also be noted that, for ease of description, only portions relevant to the invention are shown in the accompanying drawings.

[0025] It should be noted that, in the absence of conflict, the embodiments and features of the embodiments in this application can be combined with each other. The present application will be described in detail below with reference to the accompanying drawings and in combination with the embodiments.

[0026] like Figure 1 As shown, the present application provides a quartz crucible preparation system, comprising: multiple preparation devices 1 and a detection device 2; each preparation device 1 includes a feeding unit 3, a melting unit 4, a sandblasting unit 5 and a cleaning unit 6; the feeding unit 3 is used to pre-treat the raw materials and transfer them to the melting unit 4; the melting unit 4 is used to evacuate and melt the pre-treated raw materials to obtain a semi-finished quartz crucible; the sandblasting unit 5 is used to spray a barium coating on the inner wall of the semi-finished quartz crucible to obtain a finished quartz crucible; the detection device 2 is used to detect the finished quartz crucible; A control unit, which is in communication with the preparation device 1 and the detection device 2 and is used to detect and control the operating status of the preparation device 1 and the detection device 2 in real time; The control unit is further configured to determine the corresponding standard detection parameter requirements and the second sorting according to the identification number of the finished quartz crucible prepared by the preparation device 1 and the corresponding indicator to be detected, and to detect the various indicators to be detected of the finished quartz crucible according to the second sorting. If the current indicator to be detected meets the standard detection parameter requirements and the detection mechanism corresponding to the next indicator to be detected is in a working state, the current quartz crucible is stored in a crucible cache area between the detection mechanism corresponding to the indicator to be detected that has been tested and the detection mechanism corresponding to the next indicator to be detected, and the crucible waiting time and the current crucible cache are recorded. The number of crucibles corresponding to each identification number in the area; if the detection mechanism of the next to-be-detected indicator corresponding to any quartz crucible finished product in the crucible cache area is switched to an idle state, the quartz crucible finished product will be used as the target finished product to be detected; and when the number of target finished products to be detected is greater than 1, the quartz crucible finished product with the longest waiting time among the target finished products to be detected with the same identification number will be selected and transferred to the detection mechanism in an idle state for detection, and it will be determined whether the to-be-detected indicators meet the standard detection parameter requirements; when all the to-be-detected indicators of the quartz crucible finished product meet the standard detection parameter requirements, it will be packaged and put into storage.

[0027] It should be noted that the system includes multiple preparation devices 1 and a detection device 2; multiple preparation devices 1 can simultaneously carry out the preparation of quartz crucibles to ensure production efficiency; at the same time, the detection device 2 performs quality inspection on the finished quartz crucibles to ensure that the products meet the corresponding quality requirements. Specifically, in the production process of quartz crucibles, the feeding unit 3 at least includes operations such as screening, cleaning, and crushing of raw materials, the purpose of which is to remove impurities in the raw materials and ensure that the particle size, purity, etc. of the raw materials meet the requirements of subsequent melting. After completing the above operations, the feeding unit 3 transfers the raw materials to the melting unit 4, that is, to provide suitable raw materials for the subsequent melting process. The melting unit 4 is used to prepare quartz crucibles. The specific process is: first, the internal space of the melting unit 4 is evacuated to form a low-pressure environment. Under vacuum conditions, the gas content in the raw materials is reduced to avoid the generation of bubbles during the melting process, thereby improving the quality of the quartz crucible. Then, the raw materials processed by the feeding unit 3 are melted under high temperature, so that the raw materials are melted and fused into a uniform liquid state, and then solidified and formed through a specific process and mold to obtain a quartz crucible semi-finished product. Here, the above-mentioned specific process and mold are, for example: a centrifugal casting process, after the raw materials are melted into a uniform liquid state, the liquid raw materials are injected into a high-speed rotating mold. The liquid raw materials are evenly distributed on the inner wall of the mold by centrifugal force, and as the mold rotates, the liquid raw materials gradually cool and solidify. This process can make the wall thickness of the quartz crucible more uniform, effectively reduce stress concentration points, and improve product quality. For example, in the production of some high-precision quartz crucibles, the centrifugal casting process can ensure that the tolerance of the crucible wall thickness is controlled within an extremely small range, meeting the semiconductor industry's stringent requirements for the dimensional accuracy of quartz crucibles. The vacuum suction casting process, in a vacuum environment, fills the molten raw materials into the mold cavity by negative pressure suction. Because the casting process is performed under vacuum, it further eliminates tiny bubbles in the liquid raw material, ensuring a tighter fit within the mold, improving density and surface finish after molding. For quartz crucibles with extremely high requirements for internal defects and surface quality, such as those used in high-end photovoltaic applications, vacuum suction casting can better meet production requirements. Graphite molds, with their excellent high-temperature resistance and chemical stability, can withstand high temperatures during the quartz crucible manufacturing process without deformation or chemical reactions with the quartz raw material. Their shape and dimensions are designed based on the specifications of the target quartz crucible. A common graphite mold consists of two parts, upper and lower, which, when closed, form a cavity that conforms to the shape of the quartz crucible. After the liquid raw material is injected into the mold, the graphite mold quickly conducts heat, ensuring uniform cooling and solidification of the raw material. For example, when producing large-sized quartz crucibles, graphite molds can be customized to meet specific diameter and depth requirements, ensuring that the crucibles meet specific dimensional standards. Ceramic molds also offer high-temperature and corrosion resistance, and their high surface finish ensures excellent surface quality for quartz crucibles.When using ceramic molds, a layer of release agent is typically applied to the mold surface to facilitate demolding of the semi-finished quartz crucible. Small, high-precision quartz crucibles are often produced using ceramic molds. The fine structure of ceramic molds allows for the creation of quartz crucibles with complex shapes or specialized requirements, meeting the demands of specialized applications.

[0028] The sandblasting unit 5 is used to spray a barium coating on the inner wall of the semi-finished quartz crucible. Here, the barium coating is used to improve the high-temperature resistance and chemical stability of the quartz crucible. During subsequent use in processes such as single crystal silicon pulling, it can effectively resist high temperatures and chemical corrosion, extend the service life of the quartz crucible, ensure the smooth progress of the production process, and thus improve the quality of the final product. The cleaning unit 6 is used to clean the quartz crucible after sandblasting. Its purpose is to remove impurities and dust remaining during the preparation process, as well as particles that may remain during the sandblasting process, ensuring the surface of the finished quartz crucible is clean and preventing these impurities from affecting subsequent use.

[0029] Furthermore, the crucible buffer area A is used to temporarily store finished quartz crucibles awaiting inspection, the qualified product storage area C is used to store quartz crucibles that have passed all tests, and the unqualified product storage area D is used to store quartz crucibles that have failed a certain test. In the unqualified storage area D, the quartz crucibles can be classified and stored according to the unqualified indicators to facilitate subsequent data tracing; the secondary inspection area B is used to provide secondary inspection for finished quartz crucibles with abnormalities.

[0030] Inspection device 2 is used to perform comprehensive inspections on finished quartz crucibles. Inspection criteria include at least dimensional accuracy, surface quality (scratches, cracks, etc.), internal defects (pores, inclusions, etc.), bulk density, and flexural strength. By testing these indicators, it is possible to determine whether the finished quartz crucible meets relevant quality requirements. Only quartz crucibles that pass inspection can enter subsequent use, thus ensuring product quality and performance.

[0031] Furthermore, if Figure 2 As shown, the detection device 2 includes a size detection mechanism 7, a surface quality detection mechanism 8, an internal defect detection mechanism 9, a density detection mechanism 10 and a high-temperature performance detection mechanism 11; and a crucible buffer area is provided between two adjacent detection mechanisms, and the crucible buffer area is used to store the finished quartz crucibles waiting for detection; the size detection mechanism 7 is used to detect the size of the finished quartz crucible, and the surface quality detection mechanism 8 is used to detect the surface quality of the finished quartz crucible; the internal defect mechanism is used to detect cracks and pores in the finished quartz crucible, and the density detection mechanism 10 is used to detect the volume density of the finished quartz crucible; the high-temperature performance detection mechanism 11 is used to detect the bending strength of the finished quartz crucible.

[0032] It should be noted that the dimension detection mechanism 7 is used to accurately measure the various dimensional parameters of the finished quartz crucible, such as the diameter, height, and wall thickness of the crucible. By comparing the measured data with the preset standard dimensions, it is determined whether the dimensions of the crucible are within the dimensional tolerance range. If the dimensions are not within the dimensional tolerance range, it indicates that the current finished quartz crucible will affect its compatibility with other equipment and may even cause problems during the crystal pulling process, requiring secondary inspection or transfer to a storage area for unqualified products. Here, the preset standard dimensions and the dimensional tolerance range can be found in the corresponding standard inspection parameter requirements.

[0033] Surface quality inspection mechanism 8 is primarily used to check the surface condition of finished quartz crucibles. Defects such as scratches, pinholes, and pits on the quartz crucible surface can cause stress concentration during high-temperature use, leading to crucible breakage and impacting single crystal silicon production. Surface quality inspection mechanism 8 utilizes optical inspection equipment, electron microscopes, and other tools to meticulously inspect the crucible surface, ensuring that surface quality meets appropriate standards and ensuring the crucible's stability and reliability during use.

[0034] The internal defect detection mechanism 9 is used to detect defects such as cracks and pores within the finished quartz crucible. These internal defects may occur during the raw material melting and molding process and cannot be directly observed by the naked eye, but they can seriously affect the performance and service life of the crucible. Common detection methods include ultrasonic testing and X-ray testing. Ultrasonic testing emits ultrasonic waves into the crucible and determines whether internal defects exist based on the propagation characteristics of ultrasonic waves in different media. X-ray testing uses X-rays to penetrate the crucible, forming an image of the internal structure, visually displaying the location and shape of internal defects, allowing for the timely detection and removal of unqualified products.

[0035] The density detection mechanism 10 is used to test the volume density of finished quartz crucibles. Volume density is an important indicator of the uniformity and density of the quartz crucible material. If the density is uneven or substandard, it indicates problems such as uneven mixing of raw materials or insufficient melting during the crucible production process, which can affect the crucible's physical properties and chemical stability. Here, the density detection mechanism 10 uses methods such as the Archimedean principle to measure the crucible's weight in air and liquid to calculate its volume density, thereby assessing product quality.

[0036] The high-temperature performance testing mechanism 11 is used to test the flexural strength of the finished quartz crucible, a key indicator of its mechanical properties in high-temperature environments. During single-crystal silicon pulling, the quartz crucible must withstand both high temperatures and mechanical stress. If its flexural strength is insufficient, it may deform or even break at high temperatures, leading to crystal pulling failure. The high-temperature performance testing mechanism 11 simulates the high-temperature environment experienced in actual use, applying a certain bending load to the crucible and measuring its flexural strength to ensure that the product meets the high-temperature performance requirements of actual applications.

[0037] The crucible cache area, located between two adjacent testing units, temporarily stores finished quartz crucibles awaiting inspection. Because different testing units have varying inspection times, and the testing process may be affected by factors such as equipment maintenance and calibration, the crucible cache area serves as a buffer and adjustment. If a testing unit is busy or experiencing a malfunction, other completed crucibles can be temporarily stored in the crucible cache area, avoiding production interruptions. This also facilitates the rational scheduling of crucible inspections based on the operating status of each testing unit, improving the efficiency and flexibility of the entire testing process.

[0038] Furthermore, a control unit is connected to the preparation device 1 and the detection device 2 for communication, and the control unit is used to detect and control the operating status of the preparation device 1 and the detection device 2 in real time. Here, the control unit includes at least a data monitoring module 12 and a processing module E; Figure 2 As shown, the data monitoring module 12 is in communication with the preparation device 1 and the detection device 2. The data monitoring module 12 is used to monitor the production progress of the preparation device 1 and the working status of the detection device 2 in real time. The processing module E is used to control the corresponding device to perform the corresponding action according to the data.

[0039] Among them, the data monitoring module 12 is connected to the preparation device 1 and the detection device 2 in communication, and is used to monitor the production progress of the preparation device 1 in real time. Here, the monitoring of the production progress includes multiple aspects, such as monitoring the frequency and amount of raw material addition in the feeding unit 3, so as to determine whether the raw material supply is stable and whether it meets the production rhythm requirements. If abnormal raw material addition is found, such as insufficient or excessive addition, it may affect the production quality of the subsequent melting unit 4. The data monitoring module 12 can promptly issue an alarm to notify the staff to make adjustments. The data monitoring module 12 is also used to monitor the working status of the melting unit 4 in real time, including parameters such as melting temperature, time, and vacuum degree. These parameters are directly related to the quality of the quartz crucible semi-finished product. If the melting temperature is unstable, it may cause the internal structure of the quartz crucible to be uneven, affecting its performance. By monitoring these parameters in real time, the data monitoring module 12 can promptly detect deviations in the production process, help operators take timely measures, and ensure the stability of the production process and the consistency of product quality. In addition, by monitoring the working status of the detection device 2 in real time, for example, whether the size detection mechanism 7 and the surface quality detection mechanism 8 are working properly. If a detection mechanism fails, such as a device freeze or sensor failure, the data monitoring module 12 can immediately capture these abnormal information and promptly notify relevant personnel for repairs. At the same time, monitoring the workload of each detection mechanism is also an important part. Understanding the current number of detection tasks, expected completion time, and other information of each detection mechanism is very critical for rationally arranging the detection order of quartz crucibles. For example, if the workload of a detection mechanism is light, while other detection mechanisms are busy, the quartz crucibles waiting for detection can be prioritized to the idle detection mechanism, thereby increasing the detection time, avoiding equipment idleness, and making the entire detection process more efficient and orderly.

[0040] By monitoring the production progress and inspection status, problems can be discovered in a timely manner and production and inspection strategies can be adjusted, thereby improving production efficiency, reducing production costs, ensuring product quality, and ultimately enhancing the competitiveness and reliability of the entire quartz crucible preparation system.

[0041] like Figure 3 As shown, the present application provides a method for preparing a large-sized quartz crucible with high density and high strength, comprising the following steps: S100. Obtain an identification number of a finished quartz crucible and its corresponding indicator to be detected, as well as a detection time and a detection complexity parameter of the indicator to be detected; classify the indicators to be detected corresponding to detection times within the same preset time interval into the same detection level, obtain a first ranking of the detection levels according to the detection complexity parameter corresponding to each detection level, and obtain a second ranking corresponding to each indicator to be detected according to the first ranking and the detection time of each indicator to be detected within each detection level.

[0042] It should be noted that the identification number of a finished quartz crucible is the unique identification information for each finished quartz crucible. Different identification numbers correspond to different test indicators, corresponding to different test durations and complexity parameters. Based on the identification number, the corresponding standard test parameter requirements are searched in the finished product inspection database. Since quartz crucibles from different batches and for different uses have different quality standards, the identification number is used to obtain the corresponding standard test parameter requirements, providing an accurate basis for subsequent testing.

[0043] Furthermore, the indicators to be tested include at least size, surface quality, internal defects, volume density and bending strength; the preset time intervals include at least a first time interval, a second time interval and a third time interval; the time end values ​​of the first time interval, the second time interval and the third time interval increase one by one.

[0044] Here, dimensional testing measures whether the quartz crucible meets design specifications (such as diameter, height, and wall thickness), which affect the compatibility of the quartz crucible with other equipment. Surface quality testing detects potential surface defects such as scratches and pinholes, which can cause problems during use. Internal defect testing targets potential internal cracks and pores to prevent failures under high temperatures or stress. Bulk density testing reflects the uniformity and density of the quartz crucible's material. Flexural strength testing measures the quartz crucible's ability to resist bending deformation in high-temperature environments, ensuring its reliability in practical applications. Furthermore, the preset duration intervals include at least three intervals: a first duration interval, a second duration interval, and a third duration interval, with the end values ​​of the first, second, and third duration intervals increasing in sequence. This division is based on a comprehensive consideration of factors such as the testing time required for different testing indicators, equipment preparation time, and operational complexity. For example, some inspection projects that use automated optical measurement equipment may have a faster inspection speed and will be classified into a higher efficiency range; while those inspection projects that require complex sample preparation, long testing time or high-precision equipment calibration will be classified into a lower efficiency range.

[0045] like Figure 4 As shown, the indicators to be detected corresponding to the detection durations in the same preset duration interval are divided into the same detection level, a first ranking of the detection levels is obtained according to the detection complexity parameter corresponding to each detection level, and a second ranking corresponding to each indicator to be detected is obtained according to the first ranking and the detection duration of each indicator to be detected in each detection level, which specifically includes the following steps: S101a, obtaining the detection time and detection complexity parameters of the size detection mechanism 7, the surface quality detection mechanism 8, the internal defect detection mechanism 9, the density detection mechanism 10 and the high temperature performance detection mechanism 11 corresponding to each indicator to be detected.

[0046] Among them, it is necessary to conduct a detailed analysis of each inspection agency responsible for testing different indicators. The size inspection agency 7, surface quality inspection agency 8, internal defect inspection agency 9, density inspection agency 10 and high temperature performance inspection agency 11 all have different inspection time and inspection complexity parameters. The inspection time can be measured by the time required to complete the inspection of the indicator; the inspection complexity parameter involves multiple aspects such as the technical difficulty required for the inspection, the number of operating steps, the requirements for the operator's skill level, and the complexity of the inspection equipment. For example, size inspection may use simple measuring tools or automated optical measuring instruments, which are relatively easy to operate and have a long inspection time; while the high temperature performance inspection agency 11 needs to simulate a high temperature environment, has high requirements for equipment, a complex inspection process, and a short inspection time.

[0047] S102a. Obtain the indicators to be detected whose detection duration is in the first duration interval and mark them as the first detection level, obtain the indicators to be detected whose detection duration is in the second duration interval and mark them as the second detection level, and obtain the indicators to be detected whose detection duration is in the third duration interval and mark them as the third detection level.

[0048] Among them, according to the acquired detection time information, the size detection mechanism 7 and the surface quality detection mechanism 8 are classified as the first detection level, because their detection time is in the first time interval, which is relatively short, indicating that more detection tasks can be completed in the same time. The detection time of the internal defect detection mechanism 9 and the density detection mechanism 10 is in the second time interval and is classified as the second detection level, and its detection time is lower than the first detection level. The high temperature performance detection mechanism 11 has the lowest detection time, which is in the third time interval and is classified as the third detection level. This division helps to give priority to projects with short detection time in the subsequent detection process, thereby improving the efficiency of the overall detection work.

[0049] For example, the detection time of the size detection mechanism 7 is 5 minutes, the detection time of the surface quality detection mechanism 8 is 8 minutes, the detection time of the internal defect detection mechanism 9 is 15 minutes, the detection time of the density detection mechanism 10 is 20 minutes, and the detection time of the high temperature performance detection mechanism 11 is 1 hour; the first time interval is 0-10 minutes, the second time interval is 10-20 minutes, and the third time interval is greater than 20 minutes; then, the size detection mechanism 7 and the surface quality detection mechanism 8 are marked as the first detection level, the detection time of the internal defect detection mechanism 9 and the density detection mechanism 10 is marked as the second detection level, and the high temperature performance detection mechanism 11 is marked as the third detection level.

[0050] S103a. Determine a level complexity parameter according to the detection complexity parameters corresponding to the indicators to be detected at the same detection level, and sort the detection levels in ascending order according to the level complexity parameters to obtain a first sort.

[0051] The complexity parameters for the inspection indicators within the same inspection level are superimposed to generate the level complexity parameter. For example, if the first inspection level includes both dimensional and surface quality inspections, the complexity parameter for the former is 1 and the complexity parameter for the latter is 2, then the level complexity parameter is 3. The first ranking is obtained by sorting the level complexity parameters from smallest to largest. For example: first inspection level, second inspection level, third inspection level. The purpose of generating the first ranking is to perform low-complexity inspections first to quickly screen out obviously non-conforming products, avoid wasting high-complexity inspection resources (such as high-temperature performance testing equipment), and improve overall inspection time.

[0052] S104a. In the first sorting, sort the indicators to be detected in each detection level from small to large according to the corresponding detection time, to obtain a second sorting corresponding to each indicator to be detected.

[0053] Based on the order of levels determined by the first sorting, the second sorting is then performed by sorting the indicators within each level from shortest to longest testing time. For example, within the first inspection level: dimensional inspection (5 minutes), surface quality inspection (8 minutes); within the second inspection level: internal defect inspection (15 minutes), bulk density inspection (20 minutes); within the third inspection level: bending strength inspection only (60 minutes). By further optimizing the order within the same level, prioritizing short-term inspections, the overall waiting time for individual finished products is reduced, and the efficiency of the inspection line is improved.

[0054] S200: Determine standard inspection parameter requirements for the finished quartz crucible according to the identification number, inspect the finished quartz crucible according to the second sorting order, and if the current indicator to be inspected meets the standard inspection parameter requirements and the inspection mechanisms corresponding to the next indicator to be inspected are all in working condition, store the current finished quartz crucible in a crucible cache area, and record the crucible waiting time and the number of crucibles corresponding to each identification number in the current crucible cache area; the crucible cache area is an area located between the inspection mechanisms of the inspection device 2 corresponding to two adjacent indicators to be inspected.

[0055] Among them, according to the identification number, the standard test parameter requirements of the finished quartz crucible are determined, which specifically includes the following steps: Obtain a finished product inspection database, and search the finished product inspection database for standard inspection parameter requirements corresponding to the identification number; the finished product inspection database includes at least multiple identification numbers and the standard inspection parameter requirements corresponding to each identification number.

[0056] The standard inspection parameter requirements stored in the finished product inspection database cover multiple aspects of quartz crucible quality standards. For example, in terms of dimensions, these parameters specify the allowable tolerance ranges for diameter, height, and wall thickness. Regarding surface quality, the acceptable levels of defects such as scratches and pinholes are clearly defined. Regarding internal defects, there are corresponding limits on the size, number, and location of cracks and pores. Physical properties such as bulk density and flexural strength also have corresponding standard value ranges. Searching using the identification number as an index ensures that each quartz crucible receives the precise inspection standard that matches its batch, model, or application scenario. For example, quartz crucibles used in the semiconductor industry and those used in the photovoltaic industry may have different internal defect standards and flexural strength requirements, even if they are of similar dimensions, due to different product performance requirements in their respective applications. Using the identification number allows accurate identification of the applicable inspection standard, ensuring the scientific and accurate nature of the inspection work and preventing substandard products from entering the market or qualified products from being misclassified due to incorrect inspection standards.

[0057] Here, the finished product inspection database is shown in Table 1. "G-xxx-xxx-xxx" represents a certain model of quartz crucible from a certain production batch used in a specific application scenario. Furthermore, the data in Table 1 regarding the standard inspection parameter requirements is for illustrative purposes only and does not limit the standard inspection parameter requirements for quartz crucibles.

[0058] Table 1 Finished product inspection database

[0059] According to the second sorting determined in step S100, the finished quartz crucibles are inspected one by one. During the inspection process, the actual test results of each indicator to be inspected are compared with the standard inspection parameter requirements. If the current indicator to be inspected meets the standard inspection parameter requirements and the inspection mechanisms corresponding to the next indicator to be inspected are all in operation, then the next indicator to be inspected representing the current finished quartz crucible cannot be inspected immediately. To prevent the quartz crucibles from piling up and waiting in front of the inspection device 2, which would affect the smoothness of the inspection process, the current finished quartz crucible is transferred to a crucible buffer area for temporary storage. At the same time, the waiting time of the finished quartz crucible and the number of crucibles corresponding to each identification number in the current crucible buffer area are recorded. Here, the crucible buffer area is provided between the inspection mechanisms of the inspection devices 2 corresponding to two adjacent indicators to be inspected, acting as a buffer to ensure the orderly progress of the inspection process. A timer can be used to record the waiting time of the finished quartz crucibles, and this timer is in communication with the processing module E, so that the processing module E can determine the finished quartz crucibles that should be prioritized for the next inspection process based on the waiting time corresponding to the finished quartz crucibles with each identification number.

[0060] In addition, if the current indicator to be tested meets the standard test parameter requirements and the testing mechanism corresponding to the next indicator to be tested is idle, the current quartz crucible finished product can be transferred to the idle testing mechanism for testing the next indicator to be tested. If the current indicator to be tested does not meet the standard test parameter requirements, the quartz crucible finished product can be transferred to the unqualified product storage area D.

[0061] Furthermore, if the total number of crucibles in the crucible cache area between the detection mechanism corresponding to the currently completed indicator to be detected and the detection mechanism corresponding to the next indicator to be detected is greater than or equal to the target crucible cache number and the detection mechanisms corresponding to the next indicator to be detected of all quartz crucible finished products in the crucible cache area are in working condition, then the transfer speed between the detection mechanism corresponding to the currently completed indicator to be detected and the current crucible cache area is adjusted to extend the time for the quartz crucible finished products to arrive at the current crucible cache area.

[0062] Among them, when the total number of crucibles in the crucible cache area between the detection mechanism corresponding to the currently detected indicator to be detected and the detection mechanism corresponding to the next indicator to be detected reaches or exceeds the pre-set target crucible cache number, and when the detection mechanisms corresponding to the next indicator to be detected of all quartz crucible finished products in the current crucible cache area are all in working condition, in order to avoid excessive backlog of crucibles in the cache area, the time for the quartz crucible finished products to arrive at the current crucible cache area can be extended by adjusting the operating speed of the transfer equipment 13 between the detection mechanism corresponding to the currently detected indicator to be detected and the detection mechanism corresponding to the next indicator to be detected. For example, when there are too many crucibles in the current crucible cache area, the speed of the transfer equipment 13 is reduced, and the detection mechanism corresponding to the next indicator to be detected has enough time to process the existing quartz crucible finished products, thereby ensuring the balance and stability of the entire detection process. Here, the target crucible cache number can be determined based on factors such as production experience and the processing capacity of the detection equipment to ensure the efficient and stable operation of the detection process.

[0063] Furthermore, adjusting the transfer speed between the detection mechanism corresponding to the currently detected indicator to be detected and the current crucible buffer area specifically includes the following steps: Obtaining the operating speed of the transfer device 13 between the detection mechanism corresponding to the currently detected indicator to be detected and the current crucible cache area; and determining the initial adjustment range of the transfer speed of the transfer device 13 based on the ratio of the total number of crucibles in the crucible cache area to the target crucible cache number; Obtain the workload of the detection mechanism corresponding to the next indicator to be detected. If the detection time corresponding to the workload exceeds the preset detection time, the initial adjustment amplitude and the preset adjustment amplitude are superimposed as the final adjustment amplitude, and an adjustment instruction is sent to the transfer equipment 13; the adjustment instruction carries the final adjustment amplitude, so that the transfer equipment 13 runs according to the transfer speed adjusted by the final adjustment amplitude.

[0064] It should be noted that before adjusting the transfer speed, the current operating speed of the transfer equipment 13 between the detection mechanism corresponding to the currently detected indicator to be detected and the current crucible cache area must first be obtained. For example, if the current operating speed of the transfer equipment 13 is to transport 5 quartz crucibles per minute, then the initial adjustment range of the transfer speed is determined based on the ratio of the total number of crucibles in the crucible cache area exceeding the target crucible cache number. When the total number of crucibles in the actual crucible cache area exceeds the target crucible cache number, the transfer speed needs to be adjusted. For example, the target crucible cache number is set to 50, and there are 80 crucibles in the actual crucible cache area, and the excess ratio is (80-50) ÷ 50 = 60%. According to the excess ratio, an initial adjustment range corresponds to it. Assuming that every 10% excess corresponds to a 5% reduction in the transfer speed, then the initial adjustment range at this time is to reduce the transfer speed by 30%. The purpose of this adjustment method is to reduce the speed at which new quartz crucible finished products enter the crucible cache area to avoid excessive backlog of crucibles in the crucible cache area.

[0065] In addition to considering the number of crucibles in the crucible cache area, it is also necessary to obtain the workload of the testing agency corresponding to the next indicator to be tested. Here, the workload can be measured by the detection time, which refers to the estimated time required for the testing agency to complete all current tasks to be tested. The preset detection time can be set based on factors such as experience and equipment performance. For example, a testing agency completes the inspection task of a batch of normal number of crucibles, which is estimated to take 2 hours according to the standard process, and it is set as the preset detection time. If the current detection time calculated based on the workload is 3 hours, it exceeds the preset detection time, which means that the testing agency is busy and its processing capacity is close to saturation.

[0066] When the detection time corresponding to the workload of the detection agency exceeds the preset detection time, in order to further relieve the pressure on the detection agency and ensure the smoothness of the detection process, it is necessary to increase the adjustment range of the transfer speed. At this time, the previously determined initial adjustment range and the preset adjustment range are superimposed as the final adjustment range. Assuming that the preset adjustment range is to reduce the transfer speed by another 20%, plus the previous initial adjustment range of 30%, the final adjustment range is to reduce the transfer speed by 50%. Then, the system will send an adjustment instruction to the transfer equipment 13, and this adjustment instruction carries the information of the final adjustment range. After receiving the adjustment instruction, the transfer equipment 13 will run according to the transfer speed adjusted by the final adjustment range. For example, originally 5 quartz crucibles were transported per minute, and after adjustment, 3 were transported per minute, thereby reducing the working pressure of the detection agency and making the entire production detection process more coordinated and efficient.

[0067] In addition, if the total number of crucibles in the crucible buffer area is less than the target crucible buffer number and the detection mechanisms corresponding to the next indicator to be detected are all in working condition, the transportation can continue at the current speed without adjusting the transport speed of the transport device 13.

[0068] S400: If the inspection mechanism for the next indicator to be inspected corresponding to any quartz crucible finished product in the crucible buffer area is switched to an idle state, the quartz crucible finished product is used as a target finished product to be inspected; and if the number of target finished products to be inspected is greater than 1, the quartz crucible finished product with the longest waiting time among the target finished products to be inspected with the largest number of the same identification number is selected and transferred to the inspection mechanism in the idle state for inspection, and it is determined whether the indicator to be inspected meets the standard inspection parameter requirements.

[0069] Among them, if it is found that the detection mechanism corresponding to the next indicator to be detected corresponding to any quartz crucible finished product in the crucible cache area has switched to an idle state, in order to improve equipment utilization and give full play to the role of detection resources, a screening will be carried out in the crucible cache area to screen out the quartz crucible finished product with the longest waiting time among the target finished products with the same identification number. It will be transferred to the idle detection mechanism for testing. Then, the indicator to be detected of the quartz crucible finished product will be tested to determine whether it meets the standard detection parameter requirements. This not only gives priority to crucibles with a long waiting time, but also can quickly detect a large number of crucibles in the same batch, while improving the detection time and ensuring the balance of the detection.

[0070] S500. When all the indicators to be tested of the finished quartz crucible meet the requirements of the standard testing parameters, it is packaged and put into storage.

[0071] When finished quartz crucibles undergo a series of tests and all indicators meet the pre-determined standard test parameters, they are considered qualified and ready for use. These qualified quartz crucibles are then transported to the qualified product storage area C for packaging and then shipped to a warehouse for storage, awaiting subsequent use in semiconductor, photovoltaic, and other related production fields. Furthermore, if Figure 5 As shown, obtaining the identification number of the finished quartz crucible and its corresponding indicator to be tested specifically includes the following steps: S101b. If the application scenario of the finished quartz crucible is determined to be the first risk scenario based on the identification number, the size, surface quality, internal defects, volume density and bending strength are all used as indicators to be tested.

[0072] S102b. When it is determined based on the identification number that the application scenario of the finished quartz crucible is the second risk scenario, and the number of finished quartz crucibles with the same identification number that were tested for volume density last time is less than a preset number, size, surface quality, internal defects, and bending strength are used as indicators to be tested.

[0073] Among them, because different application scenarios have different performance requirements for quartz crucibles, volume density, as one of the important performance indicators, has different standards in different scenarios.

[0074] Application scenarios are categorized as risk-one and risk-two scenarios. The standard testing parameters for volume density in risk-one scenarios are higher than those in risk-two scenarios. For example, in semiconductor manufacturing (considered risk-one), the purity and density uniformity of quartz crucibles are extremely demanding; even small density variations can affect semiconductor product quality. In contrast, in some common photovoltaic production scenarios (risk-two scenarios), density requirements are less stringent. Understanding these differences provides the foundation for implementing different testing strategies.

[0075] Specifically, in the first risk scenario, which has stringent requirements for product quality, comprehensive testing can eliminate substandard products to the greatest extent possible, avoiding semiconductor production failures due to insufficient density or strength, and reducing quality risks in high-value scenarios. In the second risk scenario, for scenarios with relatively low density requirements (such as general photovoltaic production), testing costs can be optimized while ensuring basic performance.

[0076] The identification number is the unique identity of the finished quartz crucible, which is associated with its production batch, model, application scenario and other information. Therefore, the application scenario can be judged by the identification number, and then the corresponding indicators to be tested can be determined.

[0077] If the finished quartz crucible is used in the first risk scenario, since the first risk scenario has high density requirements, in order to ensure quality, the finished quartz crucible needs to be tested for all indicators.

[0078] For finished quartz crucibles used in the second risk scenario, the bulk density requirement is relatively relaxed (e.g., target value ≥ 2.15 g / cm³). This allows for reduced density testing frequency when the production process stabilizes. The "preset quantity" setting can be used to control the sampling interval, meaning only random sampling is sufficient. The preset quantity can be set based on actual conditions.

[0079] Differentiated detection strategies are implemented based on the risk levels of application scenarios, meeting the stringent requirements of high-risk scenarios while improving detection efficiency through sampling in low-risk scenarios, achieving a dynamic balance between quality and cost.

[0080] Furthermore, the method further comprises the following steps: If it is determined that the volume density currently being tested does not meet the standard test parameter requirements, the value of the preset quantity is adjusted; If it is determined that the volume density of the next test still does not meet the standard test parameter requirements, it is determined that there are abnormal problems in the processing technology data and equipment operation status of each unit of the preparation device 1, and the corresponding preparation device 1 is shut down for maintenance, and the preparation device 1 after maintenance is used to produce a preset number of test finished products; and the value of the preset number is set to 1 to test the volume density of all test finished products until the volume density test pass rate is greater than or equal to the target pass rate, and then the normal production of the preparation device 1 is resumed.

[0081] It should be noted that if the volume density of the finished quartz crucible currently being tested does not meet the standard test parameter requirements, for example, the measured value is less than 2.15g / cm³, which is lower than the density standard for the second risk scenario, the preset number value will be reduced. For example, the preset number is the interval threshold for determining whether volume density testing is required in the second risk scenario. For example, the original preset number is 20, and after reduction, it becomes 5. The preset number represents the maximum number of intervals within the same batch of products that do not require volume density testing. When density failure occurs, reducing the preset number can increase the frequency of subsequent testing (for example, from testing every 50 pieces to every 30 pieces), allowing for more frequent monitoring of density fluctuations and timely identification of potential problems.

[0082] If the bulk density in the next test still fails to meet the standard (i.e., two consecutive failures), it is determined that there is an anomaly in the processing data or equipment operating status of preparation unit 1 (such as temperature fluctuations in melting unit 4 or uneven spraying in sandblasting unit 5). The corresponding preparation unit 1 is shut down for maintenance, and production is halted to investigate equipment failures or process parameter deviations (such as checking the vacuum level and raw material ratio in melting unit 4). Consecutive failures may indicate systemic issues in the production process, such as equipment aging or process parameter drift. Suspension maintenance can prevent the continued production of substandard products and, through comprehensive inspections, pinpoint the root cause of the problem, preventing it from escalating.

[0083] After the overhaul is complete, a preset number of test products are produced using Preparation Unit 1. The bulk density of these products is then tested individually until the test pass rate is greater than or equal to the target pass rate (e.g., 95%). If all the tested products pass (because the pass rate is 100% when the preset number is 1), the equipment or process issue is confirmed to have been resolved, and normal production of Preparation Unit 1 can be resumed.

[0084] Through continuous testing, we ensure that the production system returns to stability, prevent re-failure due to incomplete maintenance, and ensure the quality of subsequent products.

[0085] Furthermore, the method further comprises the following steps: Obtain a historical test data set corresponding to the finished quartz crucible; the historical test data set includes at least the historical volume density test data and historical bending strength test data of all finished quartz crucibles in the same production batch that have been tested and meet the standard test parameter requirements; Calculate the correlation coefficient between bulk density and flexural strength based on the historical bulk density test data and the historical flexural strength test data in the historical test data set, and determine the risk threshold of bulk density based on the correlation coefficient; If the volume density of the current quartz crucible product is less than or equal to the risk threshold, a detection prompt message is generated; the detection prompt message is used to indicate that there is an abnormal risk in the bending strength of the quartz crucible product; If the tested bending strength of the finished quartz crucible meets the standard test parameter requirements, the bending strength of the finished quartz crucible is subjected to a secondary test to determine whether the secondary test result is consistent with the tested bending strength of the finished quartz crucible. If they are consistent, the volume density is tested again. Calculate the difference between the volume density of the secondary test and the volume density of the finished quartz crucible that has been tested. If the difference is less than the error density setting value, it indicates that the volume density test is correct and the risk threshold is updated.

[0086] It should be noted that the historical test data set corresponding to the finished quartz crucibles can be obtained from the crucible production records. This historical test data set is a collection of relevant data for all finished quartz crucibles within the same production batch that have been tested and meet the standard test parameter requirements. It primarily includes historical volume density test data and historical flexural strength test data. This historical data can characterize the volume density and flexural strength performance of the products under normal production conditions for that production batch. For example, a production batch contains 100 qualified quartz crucibles. The volume density values ​​and performance data (flexural strength data) of these quartz crucibles in high-temperature environments are recorded in this set.

[0087] The correlation coefficient between bulk density and flexural strength was calculated using historical bulk density and flexural strength test data. The correlation coefficient measures the closeness of the linear relationship between two variables, ranging from -1 to 1. A correlation coefficient close to 1 indicates a strong positive correlation between bulk density and flexural strength, meaning that as bulk density increases, flexural strength also tends to increase. A correlation coefficient close to -1 indicates a strong negative correlation, while a value close to 0 indicates a weak linear relationship between the two. By calculating this correlation coefficient, the degree of association between bulk density and flexural strength can be quantified.

[0088] Specifically, the Pearson Correlation Coefficient may be used for calculation.

[0089] The mean of the bulk density data and the mean of the flexural strength data were calculated according to the following formula: ; ; in, is the mean of the bulk density data, is the number of data, is the i-th volume density data, is the mean value of the flexural strength data, is the ith bending strength data.

[0090] Covariance is used to measure the overall error of two variables and reflect whether their changing trends are consistent. Covariance is calculated according to the following formula: ; in, is the covariance.

[0091] The standard deviation of bulk density and flexural strength were calculated according to the following formula: ; ; in, is the standard deviation of bulk density, is the standard deviation of flexural strength.

[0092] Substituting the above calculated values ​​into the Pearson correlation coefficient formula, we get: ; in, is the correlation coefficient.

[0093] The risk threshold is determined based on the calculated correlation coefficient. This threshold is used to identify quartz crucibles that may be at risk of abnormal flexural strength. For example, if the calculated correlation coefficient shows a strong positive correlation between bulk density and flexural strength, a lower bulk density value can be set as the risk threshold. When the bulk density is less than or equal to the risk threshold, it indicates an abnormal flexural strength. The risk threshold can be tailored based on experience and the correlation coefficient.

[0094] For example, the risk threshold comparison table shown in Table 2 is provided. The correlation coefficient ranges and specific risk threshold values ​​in the table are provided for illustrative purposes only and do not limit this solution. The risk thresholds corresponding to different correlation coefficient ranges in the risk threshold comparison table can be further refined based on the application scenario to achieve more accurate risk thresholds.

[0095] Risk Threshold Comparison Table

[0096] When testing the current finished quartz crucible, if its volume density is found to be less than or equal to the risk threshold, the system will generate a detection prompt message. The detection prompt message is used to remind the operator that there may be an abnormal risk in the bending strength of the finished quartz crucible. This is a preliminary judgment based on the previously calculated correlation coefficient and the set risk threshold. Although it cannot directly determine that the bending strength is unqualified, it indicates that further testing is needed. For example, in actual production, when the volume density of a crucible is detected to have reached the risk threshold, the system will pop up a prompt box to inform the staff that the bending strength of the crucible may be problematic and requires special attention.

[0097] If the bending strength of the finished quartz crucible product that has been tested meets the standard test parameter requirements, then the bending strength test of the finished quartz crucible may have a false positive, and it needs to be retested to determine whether the secondary test result is consistent with the bending strength of the finished quartz crucible product that has been tested. If the results are inconsistent, it indicates that the current high-temperature performance testing mechanism 11 is faulty. If the results are consistent, it is possible that the current density testing mechanism 10 is faulty, and a secondary test is required for the volume density of the current finished quartz crucible product. Calculate the difference between the volume density of the secondary test and the volume density of the finished quartz crucible product that has been tested. If the difference is less than the error density setting value, it indicates that the aforementioned density testing mechanism 10 has tested correctly, and the data in the risk threshold comparison table needs to be updated. If the difference is greater than or equal to the error density setting value, it indicates that the aforementioned density testing mechanism 10 has tested incorrectly, and the incorrect density testing mechanism 10 should be replaced. Here, the error density setting value can be set according to actual conditions.

[0098] After all crucibles have been inspected, finished quartz crucibles whose bending strength fails to meet standard test parameters are marked and transferred to a storage area for defective products. Marking defective products facilitates differentiation and management, preventing confusion with qualified products. Transferring them to the storage area prevents them from entering subsequent production processes or the market, ensuring consistent and reliable product quality. For example, in the storage area, defective products are prominently labeled with the reason for failure and batch information to facilitate subsequent analysis and processing, such as rework or scrapping.

[0099] Furthermore, the method further comprises the following steps: When it is determined that the total number of crucibles in the crucible cache area between the detection device 2 and the preparation device 1 is greater than or equal to the target crucible cache number, the transfer speed between the preparation device 1 and the current crucible cache area is adjusted to extend the time it takes for the finished quartz crucible to arrive at the current crucible cache area.

[0100] It should be noted that, when judging whether the total number of crucibles in the crucible cache area between the detection device 2 and the preparation device 1 at the initial moment exceeds the target crucible cache number, if the total number of crucibles between the detection device 2 and the preparation device 1 is less than the target crucible cache number, there is no need to adjust the transfer speed between the preparation device 1 and the current crucible cache area; if the total number of crucibles is greater than or equal to the target crucible cache number, it indicates that the current crucible cache area is full of quartz crucible finished products. At this time, it is necessary to adjust the transfer speed between the preparation device 1 and the current crucible cache area, that is, by reducing the transfer speed, the time for the quartz crucible finished products to reach the current crucible cache area is extended, so as to avoid the quartz crucible finished products in the transfer process from being unable to enter the current crucible cache area normally and causing accumulation on the corresponding transfer equipment 13, thereby ensuring that the production and testing work can be carried out in an orderly manner and maintaining the balance and efficient operation of the entire production and testing system.

[0101] Furthermore, the method further comprises the following steps: The processing data and equipment operating status of each unit of the preparation device 1 are collected in real time. If the processing data and / or equipment operating status exceed the allowable fluctuation range, an alarm prompt message is issued and the corresponding preparation device 1 is shut down.

[0102] It should be noted that during the preparation of the quartz crucible, each unit of the preparation apparatus 1, including the feeding unit 3, melting unit 4, sandblasting unit 5, and cleaning unit 6, is continuously operating. To ensure the normal progress of the production process and the stability of product quality, it is necessary to collect the processing data and equipment operating status of these units in real time. The processing data covers the key parameters of each unit during operation, such as the amount and frequency of raw material addition in the feeding unit 3; the temperature and vacuum level of the melting unit 4; the sandblasting pressure and spraying time of the sandblasting unit 5; and the cleaning fluid concentration and cleaning time of the cleaning unit 6. The equipment operating status includes information such as the equipment speed, the operating status of each component, and whether there is any abnormal vibration or noise. Through tools such as sensors, monitoring instruments, and automated control systems, this data and status information are collected in real time for subsequent analysis and judgment.

[0103] During the production process, each processing data and equipment operating status parameter has its allowable fluctuation range. The allowable fluctuation range can be determined based on the equipment design requirements, production process standards, and long-term production practice experience. For example, the temperature of the melting unit 4 is allowed to fluctuate within the range of ±5°C of the set temperature. If the temperature exceeds the range, it may cause changes in the internal structure of the quartz crucible, affecting its quality. Similarly, there are corresponding standards for the equipment operating status. For example, if the vibration amplitude of the equipment exceeds a certain value, it indicates that there is a mechanical failure in the equipment and requires timely treatment. The system will compare the real-time collected data and status information with the pre-set allowable fluctuation range to determine whether there is any abnormality.

[0104] When the processing data and / or the operating status of the equipment exceeds the allowable fluctuation range, the system will immediately issue an alarm prompt message. The alarm method can be varied, such as sound and light alarm, which attracts the attention of the operator through flashing lights and loud alarm sounds; it can also notify relevant personnel through text messages, system pop-ups, etc. The purpose of issuing an alarm prompt message is to let the operator know in time that an abnormal situation has occurred in the production process and that corresponding measures need to be taken. At the same time, in order to avoid further deterioration of the abnormal situation, affecting product quality or even damaging the equipment, the system will automatically shut down the corresponding preparation device 1. Shutdown can prevent the continued production of unqualified products, reduce economic losses, and avoid more serious safety accidents caused by equipment failure. After the shutdown, the operator can check and adjust the equipment and process according to the alarm information and the collected data, and resume production after troubleshooting, thereby ensuring the stability of the production process and the reliability of product quality.

[0105] The present application also provides a large-sized quartz crucible with high density and high strength, comprising: a quartz crucible prepared using the above-mentioned method for preparing a large-sized quartz crucible with high density and high strength.

[0106] Quartz crucibles manufactured using this method are meticulously crafted, ensuring high density and strength, from raw material selection and processing to quality inspection. This close integration allows for standardized and scaled production, improving efficiency, reducing costs, and enhancing market competitiveness, meeting the growing demand for large-scale, high-quality quartz crucibles in the semiconductor and photovoltaic industries.

[0107] The above description is merely a preferred embodiment of the present application and an illustration of the technical principles employed. Those skilled in the art should understand that the scope of the invention herein is not limited to the technical solutions formed by the specific combination of the above-mentioned technical features, but also encompasses other technical solutions formed by any combination of the above-mentioned technical features or their equivalents without departing from the inventive concept. For example, a technical solution formed by replacing the above-mentioned features with (but not limited to) technical features having similar functions disclosed in this application.

Claims

1. A method for preparing a large-sized quartz crucible with high density and high strength, characterized in that: The method comprises the following steps: Obtaining identification numbers of finished quartz crucibles and their corresponding indicators to be detected, as well as detection durations and detection complexity parameters for the indicators to be detected; classifying the indicators to be detected corresponding to detection durations within the same preset duration interval into the same detection level, obtaining a first ranking of the detection levels based on the detection complexity parameters corresponding to each detection level, and obtaining a second ranking corresponding to each indicator to be detected based on the first ranking and the detection duration of each indicator to be detected within each detection level; Determining, based on the identification number, standard inspection parameter requirements for the finished quartz crucible, testing each of the indicators to be tested of the finished quartz crucible according to the second sorting; if a current indicator to be tested meets the standard inspection parameter requirements and a testing mechanism corresponding to a next indicator to be tested is in an operating state, storing the current finished quartz crucible in a crucible cache area between a testing mechanism corresponding to a currently tested indicator to be tested and a testing mechanism corresponding to a next indicator to be tested, and recording a crucible waiting time and the number of crucibles corresponding to each identification number in the current crucible cache area; If the detection mechanism for the next indicator to be detected corresponding to any quartz crucible finished product in the crucible buffer area is switched to an idle state, the quartz crucible finished product is used as the target finished product to be detected; and when the number of the target finished products to be detected is greater than 1, the quartz crucible finished product with the longest waiting time among the target finished products to be detected with the largest number of the same identification number is selected and transferred to the detection mechanism in the idle state for detection, and it is determined whether the indicator to be detected meets the standard detection parameter requirements; When all the indicators to be tested of the finished quartz crucible meet the requirements of the standard testing parameters, it is packaged and put into storage.

2. The method for preparing a large-sized quartz crucible with high density and high strength according to claim 1, characterized in that: The indicators to be tested include at least size, surface quality, internal defects, volume density and bending strength; the preset time intervals include at least a first time interval, a second time interval and a third time interval; the end values ​​of the first time interval, the second time interval and the third time interval increase one by one; The detection device (2) includes a size detection mechanism (7), a surface quality detection mechanism (8), an internal defect detection mechanism (9), a density detection mechanism (10) and a high temperature performance detection mechanism (11); and a crucible buffer area is provided between two adjacent detection mechanisms, and the crucible buffer area is used to store the finished quartz crucibles waiting for detection; the size detection mechanism (7) is used to detect the size of the finished quartz crucibles, and the surface quality detection mechanism (8) is used to detect the surface quality of the finished quartz crucibles; the internal defect mechanism is used to detect cracks and pores in the finished quartz crucibles, and the density detection mechanism (10) is used to detect the volume density of the finished quartz crucibles; the high temperature performance detection mechanism (11) is used to detect the bending strength of the finished quartz crucibles; Classifying the indicators to be detected corresponding to the detection durations within the same preset duration interval into the same detection level, obtaining a first ranking of the detection levels according to the detection complexity parameter corresponding to each detection level, and obtaining a second ranking corresponding to each indicator to be detected according to the first ranking and the detection duration of each indicator to be detected within each detection level, specifically comprising the following steps: Obtaining detection time and detection complexity parameters of the size detection mechanism (7), the surface quality detection mechanism (8), the internal defect detection mechanism (9), the density detection mechanism (10), and the high temperature performance detection mechanism (11) corresponding to each of the indicators to be detected; Obtain the indicator to be detected whose detection duration is within the first duration interval and mark it as a first detection level, obtain the indicator to be detected whose detection duration is within the second duration interval and mark it as a second detection level, and obtain the indicator to be detected whose detection duration is within the third duration interval and mark it as a third detection level; Determine a level complexity parameter according to the detection complexity parameters corresponding to the indicators to be detected at the same detection level, and sort the detection levels in ascending order according to the level complexity parameters to obtain a first sorting; In the first sorting, the indicators to be detected in each detection level are sorted from small to large according to the corresponding detection time, so as to obtain a second sorting corresponding to each indicator to be detected.

3. The method for preparing a large-sized quartz crucible with high density and high strength according to claim 2, characterized in that: Obtaining the identification number of the finished quartz crucible and its corresponding indicators to be tested specifically includes the following steps: If it is determined based on the identification number that the application scenario of the finished quartz crucible is a first risk scenario, the size, surface quality, internal defects, volume density, and bending strength are all used as the indicators to be tested; When it is determined, based on the identification number, that the application scenario of the finished quartz crucible is a second risk scenario, and the number of finished quartz crucibles with the same identification number that were previously tested for volume density is less than a preset number, size, surface quality, internal defects, and bending strength are used as the indicators to be tested; The standard detection parameter requirement for the volume density of the first risk scenario is higher than the standard detection parameter requirement for the volume density of the second risk scenario.

4. The method for preparing a large-sized quartz crucible with high density and high strength according to claim 3, characterized in that: The following steps are also included: If it is determined that the volume density currently being tested does not meet the standard test parameter requirements, adjusting the value of the preset number; If it is determined that the volume density of the next test still does not meet the standard test parameter requirements, it is determined that there are abnormal problems in the processing technology data and equipment operation status of each unit of the preparation device (1), and the corresponding preparation device (1) is shut down for maintenance, and the preparation device (1) after maintenance is used to produce a preset number of test finished products; and the value of the preset number is set to 1 to test the volume density of all the test finished products until the volume density test pass rate is greater than or equal to the target pass rate, and then the normal production of the preparation device (1) is resumed.

5. The method for preparing a large-sized quartz crucible with high density and high strength according to claim 2, characterized in that: The following steps are also included: Obtaining a historical test data set corresponding to the finished quartz crucible; the historical test data set at least includes historical volume density test data and historical bending strength test data of all finished quartz crucibles in the same production batch that have been tested and meet the standard test parameter requirements; Calculating a correlation coefficient between bulk density and flexural strength based on the historical bulk density test data and the historical flexural strength test data in the historical test data set, and determining a risk threshold for bulk density based on the correlation coefficient; If the current volume density of the finished quartz crucible is less than or equal to the risk threshold, a detection prompt message is generated; the detection prompt message is used to indicate that there is an abnormal risk in the bending strength of the finished quartz crucible; If the tested bending strength of the finished quartz crucible meets the standard test parameter requirements, the bending strength of the finished quartz crucible is subjected to a secondary test to determine whether the secondary test result is consistent with the tested bending strength of the finished quartz crucible. If they are consistent, the volume density is tested again. Calculate the difference between the volume density of the secondary test and the volume density of the finished quartz crucible that has been tested. If the difference is less than the error density setting value, it indicates that the volume density test is correct and the risk threshold is updated.

6. The method for preparing a large-sized quartz crucible with high density and high strength according to claim 1, characterized in that: The method further comprises the following steps: If the total number of crucibles in the crucible cache area between the detection mechanism corresponding to the currently completed indicator to be detected and the detection mechanism corresponding to the next indicator to be detected is greater than or equal to the target crucible cache number and the detection mechanisms corresponding to the next indicator to be detected of all quartz crucible finished products in the crucible cache area are in a working state, the transfer speed between the detection mechanism corresponding to the currently completed indicator to be detected and the current crucible cache area is adjusted to extend the time it takes for the quartz crucible finished products to arrive at the current crucible cache area.

7. The method for preparing a large-sized quartz crucible with high density and high strength according to claim 6, characterized in that: Adjusting the transfer speed between the detection mechanism corresponding to the currently completed indicator to be detected and the current crucible buffer area specifically includes the following steps: Obtaining the operating speed of the transfer device (13) between the detection mechanism corresponding to the currently detected indicator to be detected and the current crucible cache area; and determining the initial adjustment range of the transfer speed of the transfer device (13) according to the ratio of the total number of crucibles in the crucible cache area exceeding the target crucible cache number; Obtain the workload of the detection mechanism corresponding to the next indicator to be detected. If the detection duration corresponding to the workload exceeds the preset detection duration, the initial adjustment amplitude and the preset adjustment amplitude are superimposed as the final adjustment amplitude, and an adjustment instruction is sent to the transfer device (13); the adjustment instruction carries the final adjustment amplitude, so that the transfer device (13) runs at the transfer speed adjusted by the final adjustment amplitude.

8. The method for preparing a large-sized quartz crucible with high density and high strength according to claim 1, characterized in that: Determining the standard test parameter requirements for the finished quartz crucible according to the identification number specifically includes the following steps: Obtain a finished product inspection database, and search the finished product inspection database for the standard inspection parameter requirements corresponding to the identification number; the finished product inspection database includes at least multiple identification numbers and the standard inspection parameter requirements corresponding to each identification number.

9. The method for preparing a large-sized quartz crucible with high density and high strength according to claim 1, characterized in that: The method is applied to a quartz crucible preparation system, the quartz crucible preparation system comprising a data monitoring module (12) in communication with a preparation device (1) and a detection device (2), the data monitoring module (12) being used to monitor in real time the production progress of the preparation device (1) and the total number of crucibles in a crucible buffer area between the preparation device (1) and the detection device (2); The method further comprises the following steps: When it is determined that the total number of crucibles in the crucible cache area between the detection device (2) and the preparation device (1) is greater than or equal to the target crucible cache number, the transfer speed between the preparation device (1) and the current crucible cache area is adjusted to extend the time for the finished quartz crucible to arrive at the current crucible cache area.

10. A system for preparing a large-sized quartz crucible with high density and high strength, used to implement the method for preparing a large-sized quartz crucible with high density and high strength according to any one of claims 1 to 9, characterized in that: The system comprises: A plurality of preparation devices (1) and a detection device (2); each of the preparation devices (1) comprises a feeding unit (3), a melting unit (4), a sandblasting unit (5) and a cleaning unit (6); the feeding unit (3) is used to pre-treat the raw material and transfer it to the melting unit (4); the melting unit (4) is used to evacuate and melt the pre-treated raw material to obtain a quartz crucible semi-finished product; the sandblasting unit (5) is used to spray a barium coating on the inner wall of the quartz crucible semi-finished product to obtain a quartz crucible finished product; the detection device (2) is used to detect the quartz crucible finished product; A control unit, the control unit being in communication with the preparation device (1) and the detection device (2), the control unit being used to detect and control the operating states of the preparation device (1) and the detection device (2) in real time; The control unit is further configured to determine the corresponding standard detection parameter requirements and a second sorting according to the identification number of the quartz crucible product prepared by the preparation device (1) and the corresponding indicator to be detected, and to detect each of the indicators to be detected of the quartz crucible product according to the second sorting. If the current indicator to be detected meets the standard detection parameter requirements and the detection mechanism corresponding to the next indicator to be detected is in a working state, the current quartz crucible product is stored in a crucible cache area located between the detection mechanism corresponding to the indicator to be detected that has been currently detected and the detection mechanism corresponding to the next indicator to be detected, and the crucible waiting time and the crucible buffer area are recorded. the number of crucibles corresponding to each identification number in the storage area; if the detection mechanism of the next indicator to be detected corresponding to any quartz crucible finished product in the crucible cache area is switched to an idle state, the quartz crucible finished product is used as the target finished product to be detected; and when the number of the target finished products to be detected is greater than 1, the quartz crucible finished product with the longest waiting time among the target finished products to be detected with the largest number of the same identification number is selected and transferred to the detection mechanism in the idle state for detection, and it is determined whether the indicator to be detected meets the standard detection parameter requirements; when all the indicators to be detected of the quartz crucible finished product meet the standard detection parameter requirements, it is packaged and put into storage.

Images