A method for preparing a glass end surface strength test sample

Abstract

The present invention discloses a method for preparing a glass end surface strength test sample, which belongs to the field of glass research and development and production technology. The method comprises preliminarily cutting a target glass plate to obtain a cut glass sample, grinding the cut glass sample to obtain a ground glass sample, and polishing the ground glass sample to obtain a glass end surface strength test sample. After the glass sample is preliminarily cut, the present invention processes the sample by grinding and polishing to eliminate the stress of the cutting edge, reduce the risk of glass breaking from the cutting edge, reduce the probability of generating invalid samples in the subsequent detection process, and improve the success rate of glass sample detection.

Description

Technical Field

[0001] The invention belongs to the technical field of glass research and development and production, and particularly relates to a method for preparing a glass end face strength detection sample. Background Art

[0002] In the glass production industry, due to quality control needs, three-point or four-point strength testers are often used to test the end strength of glass samples. The current testing process is divided into two steps: sampling and testing. First, the target glass plate is manually marked and cut according to the sample quantity and size requirements of the end strength test. After sampling, it is directly placed in the testing equipment for testing.

[0003] During this process, due to the uneven distribution of residual stress at the cutting edge, the breaking point is likely to start from the cutting edge during the end face strength test, and thus the correct strength test result cannot be obtained, affecting the test progress and making it difficult for personnel to timely assess the quality of the same batch of products. Summary of the invention

[0004] The purpose of the present invention is to overcome the problem of unevenly distributed residual stress at the cut edge of a glass end face, and a method for preparing a glass end face strength test sample is proposed.

[0005] In order to achieve the above object, the present invention adopts the following technical scheme: A method for preparing a glass end surface strength test sample comprises the following steps: The target glass plate is preliminarily cut to obtain a cut glass sample, the cut glass sample is ground to obtain a ground glass sample, and the ground glass sample is polished to obtain a glass end face strength test sample.

[0006] Furthermore, the preliminary cutting is specifically as follows: Take the target glass plate from the glass production line, transfer it to the glass cutting table by the glass transfer trolley, place the target glass plate with the defect position to be inspected facing upward, and use the cutting tool to cut the target glass plate edge by edge according to the sample quantity and size required by the end face strength test.

[0007] Furthermore, the cutting tool comprises a glass cutter and a steel ruler.

[0008] Furthermore, the grinding process is performed by manual grinding or mechanical grinding, and the cut glass samples are rinsed with clean water during the grinding process.

[0009] Furthermore, the manual grinding is specifically: The cut edges of the cut glass samples are ground in one direction using a grinding tool with a mesh size of 1000 or more, wherein the grinding tool includes sandpaper or a grinding wheel.

[0010] Furthermore, the mechanical grinding is specifically: The cut edge of the cut glass sample is ground in a single linear motion by a grinding device, wherein the grinding device is coated with abrasive.

[0011] Furthermore, the polishing process includes mechanical equipment polishing and manual polishing, and the mechanical equipment polishing process is accompanied by using clean water to rinse the ground glass sample.

[0012] Furthermore, the mechanical equipment polishing is specifically: The ground glass sample is placed in a polishing device, and the cut edge of the ground glass sample is aligned with the polishing wheel for polishing.

[0013] Furthermore, the manual polishing specifically includes: Hold the glass sample with the cut edge of the ground glass sample facing outwards and polish it with a polishing cloth.

[0014] Furthermore, the polishing cloth is made of cotton, linen, silk or wool.

[0015] Compared with the prior art, the present invention has the following beneficial technical effects: The present invention proposes a method for preparing a glass end face strength test sample, which includes sample cutting, grinding, and polishing. After the target glass plate is extracted, the edge of the glass is cut into samples of a specific size required for the end face strength on a cutting table, and the cut edge of the glass sample is ground and polished to avoid the edge stress and uneven stress distribution caused by manual cutting, thereby improving the success rate and efficiency of the end face strength test glass sample detection. The method is reasonably designed and easy to operate. Not limited by factors such as time and place, the present invention processes the sample by grinding and polishing after the preliminary cutting of the glass sample, eliminates the stress on the cutting edge, reduces the risk of glass breaking from the cutting edge, reduces the probability of invalid samples in the subsequent detection process, improves the success rate of glass sample detection, and obtains the test results more efficiently and quickly. When an abnormality occurs on the production line, active and effective countermeasures can be taken as soon as possible according to the test results. It is simple for personnel to operate and is not affected by the external environment. BRIEF DESCRIPTION OF THE DRAWINGS

[0016] The drawings described herein are for explanation purposes only and are not intended to limit the scope of the present invention in any way. In addition, the shapes and proportional dimensions of the components in the drawings are only for illustration purposes to help understand the present invention, and are not intended to specifically limit the shapes and proportional dimensions of the components of the present invention. In the drawings: Figure 1 The present invention is a flow chart of a method for preparing a glass end surface strength test sample.

[0017] Figure 2 Schematic diagram of the cutting edge of the glass sample in the embodiment.

[0018] Figure 3 This is a schematic diagram of the glass sample cut and edge ground in the embodiment. DETAILED DESCRIPTION

[0019] In order to enable those skilled in the art to better understand the scheme of the present invention, the technical scheme in the embodiments of the present invention will be clearly and completely described below in conjunction with the drawings in the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without creative work should fall within the scope of protection of the present invention.

[0020] It should be noted that when an element is referred to as being "disposed on" another element, it may be directly on the other element or there may be a central element. When an element is considered to be "connected to" another element, it may be directly connected to the other element or there may be a central element at the same time. The terms "vertical", "horizontal", "left", "right" and similar expressions used herein are for illustrative purposes only and are not intended to be the only embodiment.

[0021] Unless otherwise defined, all technical and scientific terms used herein have the same meaning as those commonly understood by those skilled in the art to which the present invention belongs. The terms used herein in the specification of the present invention are only for the purpose of describing specific embodiments and are not intended to limit the present invention. The term "and / or" used herein includes any and all combinations of one or more of the related listed items.

[0022] It should be noted that the terms "first", "second", etc. in the specification and claims of the present invention and the above-mentioned drawings are used to distinguish similar objects, and are not necessarily used to describe a specific order or sequence. It should be understood that the data used in this way can be interchanged where appropriate, so that the embodiments of the present invention described herein can be implemented in an order other than those illustrated or described herein. In addition, the terms "including" and "having" and any variations thereof are intended to cover non-exclusive inclusions, for example, a process, method, system, product or device that includes a series of steps or units is not necessarily limited to those steps or units that are clearly listed, but may include other steps or units that are not clearly listed or inherent to these processes, methods, products or devices.

[0023] Embodiment 1 See also Figure 1A method for preparing a glass end surface strength test sample comprises three steps of sample preliminary cutting, grinding and polishing, and specifically comprises the following steps: The target glass plate is preliminarily cut to obtain a cut glass sample, the cut glass sample is ground to obtain a ground glass sample, and the ground glass sample is polished to obtain a glass end face strength test sample.

[0024] This embodiment can make the edge smoother after grinding and polishing, and the carefully prepared sample can better represent the overall quality of the target glass plate. Reducing surface defects such as fine cracks caused by cutting, eliminating residual stress at the edge, and reducing the risk of cut edge damage can ensure that the test results more accurately reflect the true performance of the glass material. By ensuring that the sample has a smooth, sharp-angle-free end face, the safety risk caused by sample breakage or fragments flying during the test can be reduced.

[0025] The specific steps of preliminary cutting are as follows: extract the target glass plate from the glass production line, transfer the target glass plate to the glass cutting table via the glass transfer trolley, place the target glass plate with the defect position to be detected facing upward, and use the cutting tool to cut the target glass plate edge by edge according to the number and size of samples required by the end strength test. The cutting tools include a glass cutter and a steel ruler. The four edges of the target glass plate are named A, B, C, and D, and the edge of each edge cutting sample is close to the grinding edge, and are marked in the cutting order as A1, A2...An, B1, B2...Bn, C1, C2...Cn, D1, D2...Dn, etc., to facilitate the identification of different positions of the glass plate where the corresponding glass samples are located during testing. It should be noted that there is no specific order for naming the four edges, and it is executed according to the actual situation. The following is just an example. Use the cutting tool to cut edge by edge, such as Figure 2 As shown, the uneven jagged shape is the cutting edge morphology under microscopic morphology.

[0026] The blade of the glass cutter in this embodiment is usually made of diamond or hard alloy, which can accurately cut the glass and ensure that the size of the sample after cutting meets the test requirements. When the glass cutter passes over the glass surface, a groove with a sharp bottom will be left on the glass, making it easy for the glass to crack along this groove, thereby improving the cutting efficiency. Compared with other cutting methods, the stress concentration generated by the glass cutter during cutting is small, which can reduce the damage inside the glass and maintain the integrity of the sample. The steel ruler is made of high-quality carbon steel or other metals, with precise scales, which can ensure the accuracy of the cutting size. The steel ruler is sturdy and durable, not easy to damage, and can maintain stable measurement performance in various environments. During the cutting process, the steel ruler can be used as an auxiliary tool to help determine the cutting position and size and ensure the accuracy of the cutting action. The target glass plate is transferred to the glass cutting table by a glass transfer trolley and cut according to a specific process, which can ensure the consistency and standardization of each cutting operation. Using a steel ruler for precise measurement and a glass cutter for precise cutting can greatly reduce the error in the cutting process and improve the accuracy and reliability of the sample. During the cutting process, safety risks can be reduced by ensuring that the glass sheet is placed stably, using appropriate cutting tools, and following safe operating procedures. The cut glass samples are of uniform size and regular shape, which is convenient for subsequent processing steps such as grinding and polishing, thereby improving the efficiency and quality of the entire preparation process.

[0027] The sample grinding process is manual grinding or mechanical grinding. Manual grinding is to grind the cut edge manually using grinding tools such as sandpaper and grinding wheels with a mesh size of 1000 or above; mechanical grinding is to grind the cut edge of the sample glass through a grinding device to release the residual stress on the edge; The grinding process of glass samples includes various methods such as manual grinding and mechanical grinding. The specific grinding method is not limited and all belong to the protection content of the present invention. The following is only an example.

[0028] Manual grinding means holding the glass sample with the cut edge facing the direction of the sandpaper, and using 1000-grit sandpaper to perform unidirectional grinding along the cut edge. During the grinding process, the glass sample is rinsed with clean water. Mechanical grinding means applying abrasive to the grinding tool, tilting the grinding tool, with the cut edge of the sample glass facing the grinding tool, and the glass sample moves in a single straight line from bottom to top along the grinding tool. During the polishing process, the glass sample is rinsed with clean water.

[0029] The manual grinding of this embodiment allows the operator to flexibly adjust the grinding force and angle according to the actual situation of the glass sample after cutting, so as to achieve precise control of the grinding process. By grinding in one direction, cross scratches on the glass surface can be avoided and the grinding quality can be improved. Manual grinding is suitable for glass samples of various shapes and sizes, especially for glass samples with complex shapes or irregular edges, manual grinding is more flexible. Using grinding tools such as sandpaper or grinding wheels with a mesh size of 1000 or more can ensure that the surface of the ground glass is delicate and smooth to meet the test requirements. The equipment required for manual grinding is simple and the cost is relatively low, which is suitable for small-scale or low-cost sample preparation. Mechanical grinding uses a grinding device to grind the cut glass sample in a single linear motion, which is faster and more efficient than manual grinding. The grinding device is coated with abrasives to further improve the grinding efficiency and grinding quality. Mechanical grinding can ensure that the parameters (such as grinding speed, pressure, etc.) of each grinding are consistent through a precise control system, thereby improving the consistency of sample preparation. This helps to reduce errors in the test process and improve the accuracy and reliability of the test. Modern grinding devices are usually equipped with an automated control system, which can realize functions such as automatic grinding and reduce the difficulty of manual operation. Clean water can wash away impurities such as glass debris and abrasives generated during the grinding process, and keep the grinding surface clean. This helps to reduce contamination and errors during the test and improve the accuracy of the test. A lot of heat is generated during mechanical grinding, and it is accompanied by clean water rinsing during grinding. Although the heat generated by manual grinding is less than that generated by mechanical grinding, manual grinding is also accompanied by clean water rinsing. Clean water can play a cooling role to prevent the glass sample from being damaged due to overheating. Clean water can also promote the hydrolysis of the glass surface to form a silica gel film, which helps to further improve the smoothness and quality of the ground glass surface. Both manual grinding and mechanical grinding have their own advantages in the preparation of glass end face strength test samples. At the same time, rinsing the cut glass sample with clean water can further improve the grinding quality and test accuracy. In actual operation, the appropriate grinding method and rinsing method should be selected according to specific needs and conditions.

[0030] Polishing includes mechanical polishing, manual polishing and other forms. The specific polishing method is not limited, and the following is only an example.

[0031] Manual polishing: Hold the glass sample and polish the ground edge of the glass sample with a polishing cloth made of cotton, linen, silk, wool, etc.; Mechanical polishing: Place the ground glass sample in the polishing equipment, align the cut edge with the polishing equipment, and polish to further eliminate residual stress on the edge. Figure 3 As shown, after grinding and polishing, the cutting edge is smoother and has a higher finish.

[0032] The polishing of the mechanical equipment in this embodiment can achieve efficient automated production and greatly improve the polishing speed and efficiency. Through an accurate control system, the stability and consistency of the polishing process can be ensured, and the interference of human factors can be reduced. The polishing equipment usually uses high-quality polishing wheels and polishing agents, which can ensure that the surface of the polished glass sample is smooth and delicate, meeting strict test requirements. During the polishing process, the contact pressure, rotation speed and other parameters between the polishing wheel and the glass sample can be accurately adjusted to adapt to glass samples of different materials and thicknesses. The polishing of mechanical equipment reduces the manual operation links and reduces the errors and unqualified rates caused by human factors. During the polishing process, the equipment can automatically detect and adjust the polishing parameters to ensure the stability and consistency of the polishing quality. Manual polishing has a high degree of flexibility and is suitable for glass samples of various shapes and sizes. In particular, manual polishing is more advantageous for glass samples with complex shapes or irregular edges. During the polishing process, the operator can flexibly adjust the polishing force and angle according to the actual situation to obtain the best polishing effect. The equipment required for manual polishing is simple and the cost is relatively low, which is suitable for small-scale or low-cost sample preparation. Polishing can be performed using simple tools such as polishing cloth, which reduces material costs. Manual polishing can achieve fine processing of the surface of glass samples, especially for the repair of local defects or tiny scratches, manual polishing has unique advantages. By choosing the right polishing cloth material such as cotton, linen, silk or wool and polishing agent, polishing effects of different roughness and glossiness can be obtained. Clean water can wash away impurities such as polishing agent residues and glass debris generated during the polishing process to keep the polished surface clean. This helps to reduce contamination and errors during the test and improve the accuracy of the test. A lot of heat will be generated during mechanical polishing, and clean water can play a cooling role to prevent the glass sample from being damaged or deformed due to overheating. Clean water rinsing can also promote the further improvement of the surface quality of the glass, making the surface of the polished glass sample smoother and more delicate. Mechanical equipment polishing and manual polishing each have unique benefits. In actual operation, the appropriate polishing method and rinsing method should be selected according to specific needs and conditions to obtain the best polishing effect and test accuracy.

[0033] The methods of various embodiments for preparing end face strength test samples using different processing procedures are as follows: After cutting the edge of the target glass plate according to the end face strength sample test requirements, the glass sample is processed according to the various process steps in Table 1.

[0034] The test success rate results of each embodiment of the end face strength test sample prepared using different processing processes are tested and statistically analyzed, and the test results are shown in Table 1. After the polishing is completed, the end face strength test sample is prepared. The processed sample is placed in the end face strength test equipment, and the defective side of the glass sample is placed upwards, and the equipment can be started to complete the strength test.

[0035] Table 1 Test success rate results of various embodiments of end face strength test samples prepared using different processing processes

[0036] By comparing Examples 1 to 6 with Comparative Example 1, it can be seen that: The success rate of glass end face strength testing can be greatly improved by subjecting the initially cut glass samples to different grinding and polishing steps.

[0037] By comparing Example 1 with Example 4, it can be seen that: after grinding alone, the detection success rate of glass samples is significantly improved; mechanical grinding has a better stress release effect than manual grinding, and can greatly improve the success rate of glass end surface strength sample detection. Based on this, after the glass sample is initially cut, the glass sample should be subjected to mechanical grinding first to ensure the accuracy requirements of the grinding process.

[0038] By comparing Example 1 with Example 2 and Example 3, and by comparing Example 4 with Example 5 and Example 6, it can be seen that the polishing process can further improve the detection success rate of the glass sample to a certain extent. Based on this, after the grinding process, the glass sample should be polished again, and the specific polishing form can be determined according to the actual situation.

[0039] Many embodiments and many applications beyond the examples provided will be apparent to those skilled in the art upon reading the above description. Therefore, the scope of the present teachings should not be determined with reference to the above description, but rather with reference to the preceding claims and the full scope of equivalents to which such claims are entitled. For the purpose of comprehensiveness, all articles and references, including disclosures of patent applications and publications, are incorporated herein by reference. The omission of any aspect of the subject matter disclosed herein in the preceding claims is not intended to be a disclaimer of such subject matter, nor should it be considered that the applicants did not consider such subject matter to be part of the disclosed inventive subject matter.

[0040] The above content is a further detailed description of the present invention. It cannot be determined that the specific implementation methods of the present invention are limited to these. For ordinary technicians in the technical field to which the present invention belongs, without departing from the concept of the present invention, they can also make several simple deductions or substitutions, which should be regarded as belonging to the determined protection scope of the present invention submitted.

Claims

1. A method for preparing a glass end surface strength test sample, characterized in that: The following steps are involved: The target glass plate is preliminarily cut to obtain a cut glass sample, the cut glass sample is ground to obtain a ground glass sample, and the ground glass sample is polished to obtain a glass end face strength test sample.

2. The method for preparing a glass end surface strength test sample according to claim 1, characterized in that: The preliminary cutting is specifically as follows: Take the target glass plate from the glass production line, transfer it to the glass cutting table by the glass transfer trolley, place the target glass plate with the defect position to be inspected facing upward, and use the cutting tool to cut the target glass plate edge by edge according to the sample quantity and size required by the end face strength test.

3. The method for preparing a glass end surface strength test sample according to claim 2, characterized in that: The cutting tools include a glass cutter and a steel ruler.

4. The method for preparing a glass end surface strength test sample according to claim 1, characterized in that: The grinding process is performed by manual grinding or mechanical grinding, and the cut glass samples are rinsed with clean water during the grinding process.

5. The method for preparing a glass end surface strength test sample according to claim 4, characterized in that: The manual grinding is specifically as follows: The cut edges of the cut glass samples are ground in one direction using a grinding tool with a mesh size of 1000 or more, wherein the grinding tool includes sandpaper or a grinding wheel.

6. The method for preparing a glass end surface strength test sample according to claim 4, characterized in that: The mechanical grinding is specifically: The cut edge of the cut glass sample is ground in a single linear motion by a grinding device, wherein the grinding device is coated with abrasive.

7. The method for preparing a glass end surface strength test sample according to claim 1, characterized in that: The polishing process includes mechanical polishing and manual polishing. The mechanical polishing process is accompanied by washing the ground glass sample with clean water.

8. The method for preparing a glass end surface strength test sample according to claim 7, characterized in that: The mechanical equipment polishing is specifically: The ground glass sample is placed in a polishing device, and the cut edge of the ground glass sample is aligned with the polishing wheel for polishing.

9. The method for preparing a glass end surface strength test sample according to claim 7, characterized in that: The manual polishing is specifically as follows: Hold the glass sample with the cut edge of the ground glass sample facing outwards and polish it with a polishing cloth.

10. The method for preparing a glass end surface strength test sample according to claim 9, characterized in that: The polishing cloth is made of cotton, linen, silk or wool.

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