Extra-large-size hot isostatic pressing equipment and thermal field global temperature uniformity control method

Abstract

The invention relates to extra-large-size hot isostatic pressing equipment and a thermal field global temperature uniformity control method, the extra-large-size hot isostatic pressing equipment comprises a hot isostatic pressing equipment main body, a plurality of temperature control parts are arranged in the hot isostatic pressing equipment main body, so that a plurality of heating areas capable of independently controlling the temperature are formed on the hot isostatic pressing equipment main body; the plurality of heating elements are in one-to-one correspondence with the plurality of temperature control parts, and the plurality of heating elements are respectively arranged on the corresponding temperature control parts so as to control the temperature of the corresponding heating areas; and the plurality of heating elements are matched to control the overall temperature uniformity of the hot isostatic pressing equipment main body. According to the invention, the regional control of the global temperature of the hot isostatic pressing equipment can be realized, the uniformity of the thermal field global temperature of the hot isostatic pressing equipment and the temperature stability can be ensured, and the temperature control of the extra-large hot isostatic pressing equipment can be met.

Description

Technical Field

[0001] This invention relates to the field of hot isostatic pressing technology, and in particular to an ultra-large size hot isostatic pressing equipment and a method for controlling the temperature uniformity of the entire thermal field. Background Technology

[0002] Hot isostatic pressing (HIP) is a process in which a product is placed in a sealed container and subjected to isotropic pressure (high pressure) while being kept at high temperature. Under these conditions, the product is sintered and densified. HIP is an indispensable method for the production of high-performance materials and the development of new materials. HIP can be used for direct powder molding, where the powder is placed in a casing (similar to a mold). The casing can be made of metal or ceramic (low-carbon steel, Ni, Mo, glass, etc.), and nitrogen or argon is used as the pressurizing medium to directly heat and pressurize the powder into shape – a powder metallurgy process. Alternatively, HIP can be used to heat-densify castings (including aluminum alloys, titanium alloys, high-temperature alloys, etc.). After HIP, the castings can achieve 100% densification, thereby improving the overall mechanical properties of the castings.

[0003] Temperature uniformity within the hot isostatic pressing (HIP) equipment is a crucial technical parameter in the HIP densification process. For extra-large HIP equipment handling large workpieces, temperature uniformity along the height of the hot zone is particularly critical. Uneven temperature directly leads to internal stress in the product, ranging from residual stress to cracks and ultimately, scrapping the workpiece. Currently, however, existing HIP equipment for extra-large workpieces does not meet the requirements for both temperature and uniformity stability, limiting its development and application.

[0004] There is currently no effective solution to the problem that hot isostatic pressing equipment has poor ability to control the temperature of the thermal field and the stability of the uniform temperature.

[0005] Therefore, based on years of experience and practice in related industries, the inventor proposes a method for controlling the temperature uniformity of the entire thermal field in a large-size hot isostatic pressing equipment, in order to overcome the shortcomings of the prior art. Summary of the Invention

[0006] The purpose of this invention is to provide an extra-large hot isostatic pressing (HIP) equipment and a method for controlling the uniformity of temperature across the entire thermal field. By arranging heating elements in sections on the HIP equipment, the temperature across the entire thermal field can be controlled in sections, ensuring the uniformity and stability of temperature across the entire thermal field of the HIP equipment and meeting the temperature control requirements for extra-large HIP equipment.

[0007] The objective of this invention can be achieved through the following methods: This invention provides an extra-large size hot isostatic pressing (HIP) apparatus, the extra-large size HIP apparatus comprising: The main body of the hot isostatic pressing equipment has multiple built-in temperature control units to form multiple heating zones that can be individually temperature controlled on the main body of the hot isostatic pressing equipment. Multiple heating elements are provided, each corresponding to one of the multiple temperature control units, and each heating element is disposed in its corresponding temperature control unit to control the temperature of the corresponding heating zone. Multiple heating elements work together to control the overall temperature uniformity of the main body of the hot isostatic pressing equipment.

[0008] In a preferred embodiment of the present invention, a temperature sensing element is provided on the temperature control unit, and the temperature sensing element is used to detect the temperature of the corresponding temperature control unit.

[0009] In a preferred embodiment of the present invention, the heating element includes an electric heating element, the temperature signal output terminal of the temperature sensing element is electrically connected to the temperature signal receiving terminal of the controller, and the control signal output terminal of the controller is electrically connected to the control terminal of the electric heating element.

[0010] In a preferred embodiment of the present invention, the main body of the hot isostatic pressing equipment includes a cylindrical side wall portion and a disc-shaped bottom wall portion, the bottom wall portion being connected to the bottom of the side wall portion, and a plurality of temperature control components being evenly and continuously arranged on the side wall portion and the bottom wall portion.

[0011] In a preferred embodiment of the present invention, the extra-large size hot isostatic pressing equipment further includes a fully enclosed multi-layer structure, the fully enclosed multi-layer structure including multiple sealing covers arranged sequentially from the inside to the outside, the sealing cover located on the inner side covering the outer periphery of the hot isostatic pressing equipment body.

[0012] In a preferred embodiment of the present invention, the extra-large size hot isostatic pressing equipment further includes a load-bearing cylinder and a pressure-bearing frame. The load-bearing cylinder has a receiving cavity inside, the main body of the hot isostatic pressing equipment is disposed in the receiving cavity, and the pressure-bearing frame is disposed on the outside of the load-bearing cylinder.

[0013] In a preferred embodiment of the present invention, the main body of the hot isostatic pressing equipment has a cylindrical structure, and the diameter of the main body of the hot isostatic pressing equipment is 1.85m to 2.4m. Multiple temperature control units are arranged uniformly and continuously along the circumferential and axial directions on the inner wall of the hot isostatic pressing equipment body.

[0014] In a preferred embodiment of the present invention, the ultra-high pressure range within the main body of the hot isostatic pressing equipment is 100 MPa-300 MPa; and / or, the temperature range within the main body of the hot isostatic pressing equipment is 400℃-2200℃.

[0015] This invention provides a method for controlling the temperature uniformity of the entire thermal field, which is used to control the temperature uniformity of the aforementioned extra-large-size hot isostatic pressing equipment. The method for controlling the temperature uniformity of the entire thermal field includes the following steps: The main body of the hot isostatic pressing equipment is divided into heating zones; The location and number of temperature control units are determined according to the heating area; Based on the location and temperature of the different heating zones, the materials for each heating zone are selected and the temperature uniformity is checked. If the temperature uniformity does not meet the preset requirements, repeat the above steps.

[0016] In a preferred embodiment of the present invention, the heating region is divided into heating regions on the main body of the hot isostatic pressing equipment, and the heating region includes a side wall portion located on the side wall of the main body of the hot isostatic pressing equipment and a bottom wall portion located at the bottom of the main body of the hot isostatic pressing equipment. The number of temperature control units located on the side wall is N', and the number of temperature control units located on the bottom wall is N”, wherein the sum of N' and N” is equal to the total number of temperature control units N.

[0017] In a preferred embodiment of the present invention, a temperature measuring position is set at the N+(1 / 2) position on the main body of the hot isostatic pressing equipment, and a temperature measuring element is provided at the temperature measuring position.

[0018] In a preferred embodiment of the present invention, the step of selecting materials and verifying temperature uniformity for different heating zones based on their location and temperature includes: When the temperature of the hot zone is less than or equal to 1400°C, the temperature control unit corresponding to the temperature of the hot zone is made of metallic or non-metallic materials; wherein, the metallic materials include molybdenum-lanthanum alloy, and / or, the non-metallic materials include graphite or C / C materials; When the temperature of the hot zone is greater than 1400℃ and less than or equal to 2200℃, the temperature control unit corresponding to the hot zone temperature is made of non-metallic material; wherein, the non-metallic material includes graphite or C / C material.

[0019] In a preferred embodiment of the present invention, the step of selecting materials and verifying temperature uniformity for different heating zones based on their location and temperature includes: Based on the position and number of the temperature control units set in the main body of the hot isostatic pressing equipment, a three-dimensional model of the main body of the hot isostatic pressing equipment is established. The temperature of multiple temperature control units in the three-dimensional model of the main body of the hot isostatic pressing equipment is imaged according to preset temperature data to form a visualized thermal field area. Obtain the actual temperature difference between any two of the temperature control units and compare it with the preset standard temperature difference; If the actual temperature difference is less than or equal to the standard temperature difference, then the temperature uniformity requirement of the extra-large hot isostatic pressing equipment is met. If the actual temperature difference is greater than the standard temperature difference, the temperature of at least one of the two temperature control units is adjusted.

[0020] In a preferred embodiment of the present invention, the actual temperature difference between the two temperature control units is displayed by different colors in the thermal field area.

[0021] In a preferred embodiment of the present invention, the actual temperature of the corresponding temperature control unit is detected by a temperature sensing element, and the difference between the actual temperatures of the two temperature control units is obtained to obtain the actual temperature difference.

[0022] As described above, the features and advantages of the extra-large size hot isostatic pressing equipment and the method for controlling the temperature uniformity of the entire thermal field of the present invention are as follows: Multiple temperature control units are installed within the main body of the hot isostatic pressing (HIP) equipment. These units create multiple individually temperature-controlled heating zones on the main body of the HIP equipment. Each heating zone (i.e., each temperature control unit) is equipped with a corresponding heating element. The temperature of the corresponding heating zone can be individually and zone-wise controlled through the heating element. By cooperating with multiple heating elements, the overall temperature uniformity of the main body of the HIP equipment can be controlled, ensuring the uniformity and stability of the temperature across the entire thermal field of the HIP equipment. This meets the requirements for temperature uniformity control of extra-large HIP equipment and ensures the quality of the pressed workpiece. Attached Figure Description

[0023] The following figures are intended only to illustrate and explain the present invention and do not limit the scope of the invention. Wherein: Figure 1 This is a schematic diagram of the extra-large hot isostatic pressing equipment of the present invention; Figure 2 This is a schematic diagram showing the location of the temperature measuring element in the extra-large hot isostatic pressing equipment of the present invention; Figure 3 This is one of the flowcharts of the method for controlling the temperature uniformity of the entire thermal field according to the present invention; Figure 4 This is the second flowchart of the method for controlling the temperature uniformity of the entire thermal field according to the present invention.

[0024] The reference numerals in the accompanying drawings of this invention are: 1. Main body of the hot isostatic pressing equipment; 101. Side wall section; 102. Bottom wall section; 2. Temperature control section; 3. Temperature sensing element; 4. Sealing cover. Detailed Implementation

[0025] The technical solution of the invention will be described in detail below with reference to the accompanying drawings and specific embodiments. It should be understood that these embodiments are only used to illustrate the invention and are not intended to limit the scope of the invention. After reading this invention, any modifications of the invention in various equivalent forms by those skilled in the art will fall within the scope defined by the appended claims.

[0026] It should be noted that when an element is referred to as being "set on" another element, it can be directly on the other element or there may be an intervening element. When an element is referred to as being "connected to" another element, it can be directly connected to the other element or there may be an intervening element. The terms "vertical," "horizontal," "upper," "lower," "left," "right," and similar expressions used herein are for illustrative purposes only and do not represent the only possible implementation.

[0027] Unless otherwise defined, all technical and scientific terms used herein have the same meaning as commonly understood by one of ordinary skill in the art to which this application belongs. The terminology used herein in the specification of this application is for the purpose of describing particular embodiments only and is not intended to be limiting of the application. The term "and / or" as used herein includes any and all combinations of one or more of the associated listed items.

[0028] Implementation Method 1

[0029] like Figure 1 , Figure 2 As shown, the present invention provides an extra-large size hot isostatic pressing (HIP) apparatus, which includes a main body 1 and multiple heating elements (not shown). The main body 1 has multiple temperature control units 2 built in it to form multiple individually temperature-controllable heating zones on the main body 1. The number of heating elements is equal to the number of temperature control units 2, and the multiple heating elements correspond one-to-one with the multiple temperature control units 2. The multiple heating elements are respectively disposed in the corresponding temperature control units 2, so that the temperature of the corresponding heating zone can be controlled by the heating elements. During operation, the multiple heating elements cooperate to control the overall temperature uniformity of the main body of the HIP apparatus.

[0030] In this invention, multiple temperature control units 2 are provided on the inner wall of the hot isostatic pressing equipment body 1. Multiple temperature control units 2 form multiple heating zones on the hot isostatic pressing equipment body 1 that can be individually temperature controlled. Each heating zone (i.e., each temperature control unit 2) is provided with a corresponding heating element. The temperature of the corresponding heating zone can be individually and zonedly controlled by the heating element. Thus, by the cooperation of multiple heating elements, the overall temperature uniformity of the hot isostatic pressing equipment body 1 can be controlled, ensuring the uniformity and stability of the temperature across the entire thermal field of the hot isostatic pressing equipment, and meeting the temperature uniformity control requirements for extra-large hot isostatic pressing equipment.

[0031] In an optional embodiment of the invention, such as Figure 1 As shown, the main body 1 of the hot isostatic pressing (HIP) equipment has a cylindrical structure. The diameter of the main body 1 can be, but is not limited to, 1.85m to 2.4m, and the height of the main body 1 can be, but is not limited to, 5m. Multiple temperature control units 2 can be disposed on the inner wall of the main body 1, and the multiple temperature control units 2 are evenly and continuously arranged along the circumference and axial direction of the main body 1. Of course, the multiple temperature control units 2 can also be disposed in other positions inside the main body 1, so as to form multiple heating zones inside the main body 1 and allow for individual and zoned temperature control.

[0032] Furthermore, such as Figure 1 As shown, the main body 1 of the hot isostatic pressing (HIP) equipment includes a side wall portion 101 and a bottom wall portion 102. The side wall portion 101 has a cylindrical structure with a sealed top and an open bottom, while the bottom wall portion 102 has a disc-shaped structure. The bottom wall portion 102 is located at the bottom of the side wall portion 101 and connected to the bottom of the side wall portion 101. Multiple temperature control units 2 are evenly and continuously arranged on the side wall portion 101 and the bottom wall portion 102 to ensure the overall temperature control capability of the HIP equipment main body 1, ensuring that the HIP equipment main body 1 has good temperature uniformity and temperature stability. There are 9-30 temperature control units 2, which divides the thermal field of the HIP equipment main body 1 into 9-30 heating zones that can be individually temperature-controlled. Of course, other numbers of temperature control units 2 can also be provided. The more temperature control units 2 there are, the more precise the control of the temperature uniformity and temperature stability of the HIP equipment main body 1 will be, resulting in better temperature uniformity and temperature stability of the HIP equipment main body 1.

[0033] In this invention, when the number of temperature control units 2 is 9-30, the temperature difference at different locations on the main body 1 of the hot isostatic pressing equipment is less than or equal to 3℃-5℃, which can meet the requirements of temperature uniformity throughout the entire area.

[0034] In an optional embodiment of the invention, such as Figure 1 , Figure 2As shown, a temperature sensing element 3 is provided on the temperature control unit 2. The temperature of the corresponding temperature control unit 2 can be detected in real time through the temperature sensing element 3, so that the temperature of the temperature control unit 2 can be appropriately adjusted according to the detected temperature to achieve the purpose of real-time temperature measurement.

[0035] Furthermore, the temperature sensing element 3 is positioned in the middle or near the middle of the temperature control unit 2 to improve the accuracy of temperature measurement. The temperature sensing element 3 may be, but is not limited to, a temperature sensor.

[0036] In an optional embodiment of the present invention, the heating element includes an electric heating element. The temperature signal output terminal of the temperature sensing element 3 is electrically connected to the temperature signal receiving terminal of the controller, and the control signal output terminal of the controller is electrically connected to the control terminal of the electric heating element. In actual operation, the temperature of the temperature control unit 2 is detected in real time by the temperature sensing element 3, and the collected temperature signal is sent to the controller. The controller controls the electric heating element according to the received temperature signal to ensure that each temperature control unit 2 reaches the preset temperature requirement.

[0037] In an optional embodiment of the invention, such as Figure 1 As shown, the extra-large size hot isostatic pressing equipment also includes a fully enclosed multi-layer structure. The fully enclosed multi-layer structure includes multiple sealing covers 4 arranged sequentially from the inside to the outside. The sealing cover 4 located on the inner side covers the outer periphery of the hot isostatic pressing equipment body 1. The hot isostatic pressing equipment body 1 is covered inside by the multiple sealing covers 4, which ensures the thermal field stability of the hot isostatic pressing equipment body 1.

[0038] Furthermore, the sealing cover 4 may be made of, but is not limited to, graphite or aluminum oxide.

[0039] In this invention, the ultra-high pressure range within the main body 1 of the hot isostatic pressing equipment is 100 MPa-300 MPa.

[0040] In an optional embodiment of the invention, such as Figure 1 As shown, the extra-large thermal isostatic pressing (HIP) equipment also includes a load-bearing cylinder 5 and a pressure-bearing frame. The load-bearing cylinder 5 has an internal cavity that is adapted to the main body 1 of the HIP equipment, which is located within the cavity. The pressure-bearing frame is located on the outside of the load-bearing cylinder 5 to support both the cylinder 5 and the main body 1. Furthermore, the load-bearing cylinder 5 is used to withstand ultra-high pressures of 100 MPa to 300 MPa.

[0041] In this invention, the temperature range inside the main body 1 of the hot isostatic pressing equipment is 400℃-2200℃.

[0042] The features and advantages of the extra-large size hot isostatic pressing equipment of the present invention are: This extra-large hot isostatic pressing (HIP) equipment forms multiple individually temperature-controlled heating zones on the main body 1 of the HIP equipment through multiple temperature control units 2. Each heating zone is equipped with a corresponding heating element. The temperature of the corresponding heating zone can be individually and zone-wise controlled through the heating element. Thus, by cooperating with multiple heating elements, the overall temperature uniformity of the main body 1 of the HIP equipment can be controlled, ensuring the uniformity and stability of the temperature across the entire thermal field of the HIP equipment. This meets the requirements for temperature uniformity control of extra-large HIP equipment and ensures the quality of the pressed workpiece.

[0043] Implementation Method 2

[0044] like Figure 3 As shown, the present invention provides a method for controlling the temperature uniformity of the entire thermal field, which is used to control the temperature uniformity of the aforementioned extra-large hot isostatic pressing equipment. The method for controlling the temperature uniformity of the entire thermal field includes the following steps: Step S1: Divide the main body 1 of the hot isostatic pressing equipment into heating zones; Step S2: Set the position and number of temperature control units 2 according to the heating area; Step S3: Based on the location and temperature of different heating zones, select materials and verify the temperature uniformity of different heating zones; Step S4: If the temperature uniformity does not meet the preset requirements, repeat steps S2 to S3 above.

[0045] In an optional embodiment of the present invention, in step S1, the main body 1 of the hot isostatic pressing equipment is divided into heating regions. The heating regions include a side wall portion 101 located on the side wall of the main body 1 of the hot isostatic pressing equipment and a bottom wall portion 102 located at the bottom of the main body 1 of the hot isostatic pressing equipment. The number of temperature control units 2 located on the side wall portion 101 is N', and the number of temperature control units 2 located on the bottom wall portion 102 is N”, wherein the sum of N' and N” is equal to the total number N of temperature control units 2. Wherein, N is equal to 9-30.

[0046] Furthermore, a temperature measuring position is established at N+(1 / 2) on the main body 1 of the hot isostatic pressing equipment, and a temperature measuring element 3 is installed at this position. Figure 2As shown, a temperature sensing element 3 is positioned at the vertical center of each temperature control unit 2. The technical effects of this arrangement of the temperature sensing element 3 are as follows: 1. Ensuring accurate temperature measurement and reducing errors: When measuring temperature, the edges of the temperature control unit 2 are often easily affected by the external environment (such as airflow, heat loss, etc.) or adjacent temperature control units 2. These factors may lead to errors in temperature detection. Selecting the center position for measurement can relatively reduce the interference of these external factors, thereby improving measurement accuracy. 2. Stronger representativeness: The center position usually better represents the average temperature of the entire measurement area. Under high temperature and pressure conditions, the gas density is close to that of water. When measuring liquid temperature, the liquid flow in the middle layer is relatively slow, and the temperature distribution is more uniform, thus better reflecting the true temperature of the flow field. 3. Ease of operation and location: The center position is usually easier to find and locate, especially in complex temperature measurement environments. Selecting the center position for measurement can simplify the operation process and improve work efficiency. Fourth, compliance with standards or specifications. In certain temperature measurement scenarios, such as industrial production and laboratory research, some temperature measurement standards and specifications may be formulated. These standards and specifications may require the selection of specific temperature measurement locations (such as the middle position) to ensure the accuracy and consistency of the measurement.

[0047] In an optional embodiment of the present invention, step S3, which involves selecting materials and verifying temperature uniformity for different heating zones based on their location and temperature, includes the following steps: When the temperature of the hot zone is less than or equal to 1400℃, the temperature control unit 2 corresponding to the hot zone temperature is made of metallic or non-metallic materials; among which, metallic materials include molybdenum-lanthanum alloy, and / or, non-metallic materials include graphite or C / C materials (i.e., carbon / carbon composite materials, which are carbon-based composite materials with carbon fiber or graphite fiber as reinforcement. Their all-carbon structure not only retains the excellent mechanical properties and flexible structural design of fiber-reinforced materials, but also has many advantages of carbon materials, such as low density, low coefficient of thermal expansion, high thermal and electrical conductivity, excellent thermal shock resistance, ablation resistance and friction resistance, etc. In particular, the mechanical properties of this material do not decrease but increase with increasing temperature, making it an ideal structural material for aerospace, automotive, medical and other fields). When the temperature of the hot zone is greater than 1400℃ and less than or equal to 2200℃, the temperature control unit 2 corresponding to the temperature of the hot zone is made of non-metallic material; wherein, the non-metallic material includes graphite or C / C material.

[0048] In an optional embodiment of the invention, such as Figure 4 As shown, step S3 involves selecting materials and verifying temperature uniformity for different heating zones based on their location and temperature. The temperature uniformity verification for different heating zones includes: Step S301: Based on the shape, size and other data of the hot isostatic pressing equipment body 1, as well as the position and number of the temperature control unit 2 set in the hot isostatic pressing equipment body 1, establish a three-dimensional model of the hot isostatic pressing equipment body 1. Step S302: Image the temperature of multiple temperature control units 2 in the three-dimensional model of the main body 1 of the hot isostatic pressing equipment according to the preset temperature data to form a visualized thermal field area. Step S303: Obtain the actual temperature difference between any two temperature control units 2 and compare it with the preset standard temperature difference; In the thermal zone, the actual temperature difference between the two temperature control units 2 is displayed using different colors (e.g., the color gradually lightens as the temperature decreases; or high temperature is represented by red and low temperature by green, and the temperature change process from high to low temperature gradually transitions from red to green). When selecting two temperature control units 2 from multiple temperature control units 2, the two temperature control units 2 with the larger color difference can be selected first to obtain the actual temperature difference. If the larger actual temperature difference meets the temperature uniformity requirements of the extra-large hot isostatic pressing equipment, then the other actual temperature differences with smaller differences will naturally also meet the temperature uniformity requirements of the extra-large hot isostatic pressing equipment.

[0049] Furthermore, the actual temperature of the corresponding temperature control unit 2 is detected by the temperature measuring element 3 installed on different temperature control units 2, and the difference between the actual temperatures of the two temperature control units 2 is calculated to obtain the actual temperature difference.

[0050] Step S304: If the actual temperature difference is less than or equal to the standard temperature difference, the temperature uniformity requirement of the extra-large hot isostatic pressing equipment is met; if the actual temperature difference is greater than the standard temperature difference, the temperature of at least one of the two temperature control units 2 is adjusted. The standard temperature difference can be set to be less than or equal to 3℃-5℃. When the actual temperature difference is within this range, the overall temperature uniformity requirement of the extra-large hot isostatic pressing equipment can be met.

[0051] The thermal field temperature uniformity control method of the present invention can realize zoned control of the temperature of the entire thermal field of the hot isostatic pressing equipment, which can ensure the uniformity and stability of the temperature of the entire thermal field of the hot isostatic pressing equipment and meet the temperature control requirements of the extra-large hot isostatic pressing equipment.

[0052] The thermal field temperature uniformity control method of the present invention has the same characteristics and advantages as the above-mentioned extra-large size hot isostatic pressing equipment, and will not be repeated here.

[0053] It should be noted that in the description of this application, the terms "first," "second," etc., are used only for descriptive purposes and to distinguish similar objects; there is no order between them, nor should they be construed as indicating or implying relative importance. Furthermore, in the description of this application, unless otherwise stated, "multiple" means two or more.

[0054] The various embodiments described in this specification are presented in a progressive manner. The same or similar parts between the embodiments can be referred to each other. Each embodiment focuses on the differences from other embodiments.

[0055] The above are merely a few embodiments of the present invention. Although the embodiments disclosed in the present invention are as described above, the content is only for the purpose of facilitating understanding of the present invention and is not intended to limit the present invention. Any person skilled in the art to which this invention pertains may make any modifications and changes in the form and details of the embodiments without departing from the spirit and scope disclosed in the present invention. However, the patent protection scope of the present invention shall still be determined by the scope defined in the appended claims.

Claims

1. An extra-large hot isostatic pressing equipment, characterized in that: The extra-large size hot isostatic pressing equipment includes: A hot isostatic pressing equipment body, wherein the hot isostatic pressing equipment body has a plurality of temperature control parts built therein, so as to form a plurality of heating zones on the hot isostatic pressing equipment body that can be individually temperature-controlled; A plurality of heating elements, each of which corresponds to the plurality of temperature control parts, and each of which is disposed in a corresponding temperature control part to control the temperature of the corresponding heating area; The plurality of heating elements cooperate with each other to control the overall temperature uniformity of the main body of the hot isostatic pressing equipment.

2. The super-large size hot isostatic pressing equipment according to claim 1, characterized in that: The temperature control part is provided with a temperature measuring element, and the temperature measuring element is used to detect the temperature of the corresponding temperature control part.

3. The super-large-size hot isostatic pressing equipment according to claim 2, characterized in that: The heating element comprises an electric heating element, the temperature signal output end of the temperature measuring element is electrically connected to the temperature signal receiving end of the controller, and the control signal output end of the controller is electrically connected to the control end of the electric heating element.

4. The extra-large size hot isostatic pressing equipment according to claim 1, characterized in that: The hot isostatic pressing equipment body includes a cylindrical side wall portion and a disc-shaped bottom wall portion, the bottom wall portion is connected to the bottom of the side wall portion, and the plurality of temperature control portions are evenly and continuously arranged on the side wall portion and the bottom wall portion.

5. The super-large-size hot isostatic pressing equipment according to claim 1, characterized in that: The extra-large-size hot isostatic pressing equipment also includes a fully enclosed multiple structure, which includes multiple layers of sealing covers that are sequentially arranged from the inside to the outside, and the sealing covers located on the inner side are arranged on the outer periphery of the hot isostatic pressing equipment body.

6. The extra-large-size hot isostatic pressing equipment according to any one of claims 1 to 5, characterized in that: The extra-large-size hot isostatic pressing equipment also includes a load-bearing cylinder and a pressure-bearing frame. The load-bearing cylinder has a containing cavity inside, the hot isostatic pressing equipment body is arranged in the containing cavity, and the pressure-bearing frame is arranged on the outside of the load-bearing cylinder.

7. The extra-large size hot isostatic pressing equipment according to claim 1, characterized in that: The hot isostatic pressing equipment body is a cylindrical structure, and the diameter of the hot isostatic pressing equipment body is 1.85m to 2.4m; The plurality of temperature control parts are evenly and continuously arranged in the circumferential direction and the axial direction on the inner wall of the hot isostatic pressing equipment body.

8. The extra-large size hot isostatic pressing equipment according to claim 1, characterized in that: The pressure in the main body of the hot isostatic pressing equipment ranges from 100 MPa to 300 MPa; and / or the temperature in the main body of the hot isostatic pressing equipment ranges from 400° C. to 2200° C.

9. A method for controlling the temperature uniformity of the entire thermal field, which is used to control the temperature uniformity of the extra-large-size hot isostatic pressing equipment according to any one of claims 1 to 8, characterized in that: The method for controlling the global temperature uniformity of a thermal field comprises the following steps: Divide the main body of the hot isostatic pressing equipment into heating areas; Setting the position and quantity of the temperature control parts according to the heating area; According to the positions and temperatures of the different heating areas, materials are selected and temperature uniformity is checked for the different heating areas; If the temperature uniformity does not meet the preset requirements, repeat the above steps.

10. The method for controlling the global temperature uniformity of a thermal field according to claim 9, characterized in that: The hot isostatic pressing equipment body is divided into heating areas, wherein the heating areas include a side wall portion located on a side wall of the hot isostatic pressing equipment body and a bottom wall portion located on a bottom of the hot isostatic pressing equipment body; The number of the temperature control parts located on the side wall is N', and the number of the temperature control parts located on the bottom wall is N", wherein the sum of N' and N" is equal to the total number N of the temperature control parts.

11. The method for controlling the global temperature uniformity of a thermal field according to claim 10, characterized in that: A position N+(1 / 2) on the main body of the hot isostatic pressing equipment is used as a temperature measuring position, and a temperature measuring element is arranged at the temperature measuring position.

12. The method for controlling the global temperature uniformity of a thermal field according to claim 9, characterized in that: The material selection and temperature uniformity check of different heating areas according to the positions and hot zone temperatures of different heating areas include: When the hot zone temperature is less than or equal to 1400° C., the temperature control part corresponding to the hot zone temperature is made of a metal material or a non-metal material; wherein the metal material includes a molybdenum-lanthanum alloy, and / or the non-metal material includes graphite or C / C material; When the hot zone temperature is greater than 1400° C. and less than or equal to 2200° C., the temperature control part corresponding to the hot zone temperature is made of non-metallic material; wherein the non-metallic material includes graphite or C / C material.

13. The method for controlling the global temperature uniformity of a thermal field according to claim 9, characterized in that: The material selection and temperature uniformity check of different heating areas according to the positions and hot zone temperatures of different heating areas include: Establishing a three-dimensional model of the hot isostatic pressing equipment body according to the position and number of the temperature control parts set in the hot isostatic pressing equipment body; Imaging the temperatures of the plurality of temperature control parts in the three-dimensional model of the hot isostatic pressing equipment body according to preset temperature data to form a visualized thermal field area; Obtaining the actual temperature difference between any two of the temperature control parts, and comparing it with a preset standard temperature difference; If the actual temperature difference is less than or equal to the standard temperature difference, the temperature uniformity requirement of the extra-large-size hot isostatic pressing equipment is met; If the actual temperature difference is greater than the standard temperature difference, the temperature of at least one of the two temperature control parts is adjusted.

14. The method for controlling the global temperature uniformity of a thermal field according to claim 13, characterized in that: In the thermal field area, the actual temperature difference between the two temperature control parts is displayed by different colors.

15. The method for controlling the global temperature uniformity of a thermal field according to claim 9, characterized in that: The actual temperature of the corresponding temperature control part is detected by a temperature measuring element, and the actual temperatures of the two temperature control parts are subtracted to obtain the actual temperature difference.

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