Method and apparatus for detecting glass quality, readable storage medium, and detection device

Abstract

The present invention provides a method and device for detecting the quality of glass, a readable storage medium, and a detection device. Among them, the method for detecting the quality of glass includes: during the process of heating the glass from the initial temperature to the softening temperature, obtaining the temperature change value of impurities in the glass and the radius change value of the impurities; determining the average stress value within a preset range of the position where the impurities are located according to the temperature change value and the radius change value of the impurities; and determining the explosion-proof grade of the glass according to the average stress value and the preset strength value of the glass. The present invention fully considers the influence of the parameter change value of the impurities on the explosion-proof grade of the glass. Compared with the method of only measuring the internal strength of the glass, the present invention has higher detection accuracy for the explosion-proof grade of the glass and can accurately screen out qualified products and substandard products in a batch of glass.

Description

Technical Field

[0001] The present invention belongs to the technical field of glass quality inspection. Specifically, it relates to a method and device for inspecting glass quality, a readable storage medium, and an inspection device. Background Art

[0002] Tempered glass is widely used because of its characteristic of not being easily broken. However, there is still a probability of self-explosion for tempered glass. Therefore, it is necessary to measure and calculate the explosion-proof level of tempered glass before leaving the factory. Thus, in order to ensure the safety of users using tempered glass, how to accurately obtain the explosion-proof level of tempered glass has become an urgent problem to be solved. Summary of the Invention

[0003] The present invention aims to solve one of the technical problems existing in the prior art or related technologies.

[0004] In view of this, in a first aspect, the present invention provides a method for inspecting glass quality, including: during the process of heating the glass from an initial temperature to a softening temperature, obtaining the temperature change value and the radius change value of impurities in the glass; determining the average stress value within a preset range of the position where the impurities are located according to the temperature change value and the radius change value of the impurities; and determining the explosion-proof level of the glass according to the average stress value and the preset strength value of the glass.

[0005] The method for inspecting glass quality provided by the present invention requires obtaining the temperature change value of impurities during the heating process and the radius change value of impurities during the heating process. Specifically, in order to improve the strength of the glass, the glass usually needs to be tempered. During the tempering process, the glass needs to be heated above the softening temperature first, and then the glass is rapidly quenched. During the heating process of the glass, the temperature of the impurities in the glass will also increase. However, due to the different materials of the impurities and the glass, the temperature change situation and the volume ratio after heating of the impurities are different from those of the glass, resulting in a stress concentration phenomenon around the impurities. When the strain stress around the impurities is relatively large, it is easy to cause cracks in the glass.

[0006] During the heating process of the glass, obtain the temperature change value of the impurities and obtain the radius change value of the impurities. Determine the average stress value within a preset range of the position where the impurities are located according to the temperature change value and the radius change value. According to the strength criterion of brittle material fracture, for a brittle material in a non-uniform stress field with a large stress gradient, the critical state of crack initiation depends on the average stress in the extended area, rather than the maximum stress. When the average stress in the extended area reaches the critical value, the brittle material will fracture in this area. Compare the average stress value with the preset strength value of the glass. According to the comparison result of the average stress value and the preset strength value, determine the explosion-proof level of the glass. According to the explosion-proof level of the glass, it can be determined whether the tested glass is a qualified product or a substandard product.

[0007] In the process of determining the explosion-proof level of glass, the present invention fully considers the influence of the parameter change value of impurities on the explosion-proof level of glass. Compared with the method of only measuring the internal strength of glass, the detection accuracy of the explosion-proof level of glass in the present invention is relatively high, and it can accurately screen out qualified products and substandard products in a batch of glass. The glass belonging to substandard products is not likely to flow into the market. During the use of the glass belonging to qualified products by users, cracks are not likely to appear in the glass, so that the glass is not likely to break, which can effectively improve the use safety of the glass by users.

[0008] The preset strength value of the glass can be the internal strength of the glass, and the internal strength of the glass can be detected and obtained by equipment in related technologies.

[0009] In addition, according to the method for detecting the quality of glass provided by the above technical solution of the present invention, the following additional technical features may also be included:

[0010] In a possible design, according to the temperature change value of the impurity and the radius change value of the impurity, to determine the average stress value within a preset range of the position where the impurity is located, including: according to the temperature change value of the impurity and the radius change value of the impurity, to determine the intrinsic strain of the impurity; according to the intrinsic strain, to determine the average stress value within a preset range of the position where the impurity is located.

[0011] In this design, during the heating process of the glass, the temperature of the impurity will also increase. As the temperature of the impurity increases, the temperature of the impurity itself changes, and the impurity expands due to heat, so that the temperature change value of the impurity can be known and the radius change value of the impurity can be obtained. According to the temperature change value and the radius change value of the impurity, the intrinsic strain of the impurity can be determined. The intrinsic strain reflects the deformation situation of the impurity. When the impurity deforms, a stress concentration phenomenon will be formed around it. According to the deformation situation of the impurity, the average stress value within a preset range of the position where the impurity is located is determined, and then the explosion-proof level of the impurity can be determined. When determining the explosion-proof level of the impurity, the influence of the deformation situation of the impurity on the explosion-proof level of the glass is considered, which is beneficial to improving the detection accuracy of the explosion-proof level of the glass.

[0012] In a possible design, according to the intrinsic strain, to determine the average stress value within a preset range of the position where the impurity is located, including: according to the intrinsic strain, to determine a plurality of first stress values within a preset range of the position where the impurity is located; according to the plurality of first stress values, to determine the average stress value within a preset range of the position where the impurity is located in the glass.

[0013] In this design, the eigenstrain reflects the deformation of the impurity. According to the deformation of the impurity, multiple first stress values within a preset range of the position where the impurity is located can be obtained. The critical state of glass crack initiation depends on the average stress in the propagation region rather than the maximum stress. Therefore, it is necessary to determine the average stress value based on multiple first stress values, and then compare the average stress value with the strength inside the glass to determine whether the explosion-proof grade of the glass meets the set grade, which is beneficial to improving the detection accuracy.

[0014] In a possible design, the eigenstrain of the impurity is determined according to the temperature change value of the impurity and the radius change value of the impurity, including: determining the first sub-eigenstrain according to the temperature change value of the impurity; determining the second sub-eigenstrain according to the radius change value of the impurity; determining the eigenstrain of the impurity according to the first sub-eigenstrain and the second sub-eigenstrain; wherein, the expansion coefficients of the impurity and the glass are different, causing the first sub-eigenstrain, and the impurity causes the second sub-eigenstrain due to volume expansion.

[0015] In this design, the impurity can undergo eigenstrain, and the eigenstrain includes a first sub-eigenstrain and a second sub-eigenstrain. Specifically, since the materials of the glass and the impurity are different, the thermal expansion coefficients of the glass and the impurity are also different. Therefore, during the heating process of the glass, the deformation amounts of the unit volume of the glass and the impurity are different. According to the thermal expansion coefficient of the glass, the thermal expansion coefficient of the impurity, the temperature and change value of the impurity, the first sub-eigenstrain of the impurity can be obtained.

[0016] During the heating process of the glass, the impurity will undergo a phase change, and the radius of the impurity will increase due to the phase change. The second sub-eigenstrain of the impurity can be obtained through the initial radius of the impurity and the radius change value of the impurity. Combining the first sub-eigenstrain and the second sub-eigenstrain, the eigenstrain of the impurity can be obtained.

[0017] Determining the eigenstrain of the impurity according to the first sub-eigenstrain caused by the different thermal expansion coefficients of the impurity and the glass and the second sub-eigenstrain caused by the expansion of the impurity due to phase change, and combining the first sub-eigenstrain and the second sub-eigenstrain can improve the accuracy of obtaining the eigenstrain of the impurity, and further improve the accuracy of determining the explosion-proof grade of the glass.

[0018] In a possible design, according to the eigenstrain, multiple first stress values within a preset range of the position where the impurity is located are determined, including: determining the range of stress concentration caused by the impurity according to the eigenstrain; determining multiple second stress values within the range of stress concentration according to the range of stress concentration; determining the preset range of the position where the impurity is located, and screening multiple second stress values within the range of stress concentration to obtain multiple first stress values; wherein, the preset range of the position where the impurity is located is within the range of stress concentration.

[0019] In this design, during the heating process of the glass, impurities will undergo intrinsic strain, and the intrinsic strain reflects the deformation of the impurities. According to the deformation of the impurities, the range of stress concentration caused by the impurities can be determined. When determining the range of stress concentration, the second stress value at any position within the stress range can be obtained, that is, multiple second stress values within the stress concentration range are acquired. However, although there are multiple second stress values within the stress concentration range, the stress values at the edges within the stress concentration range may be relatively small, and the relatively small stress values have a relatively small impact on the generation of cracks in the glass. Therefore, in order to reduce the computational amount, a preset range where the impurities are located can be determined. The range of stress concentration includes the preset range where the impurities are located, and the multiple second stress values are screened, and the second stress values within the preset range are retained. These second stress values are the first stress values, and thus multiple first stress values are determined. Then, the average stress value is determined based on the multiple first stress values, and further the explosion-proof grade of the glass can be determined.

[0020] In a possible design, before determining multiple stress values within a preset range from the impurities in the glass according to the intrinsic strain, it further includes: obtaining the stiffness matrix of the glass, the first coordinate value of any point in the glass, and the second coordinate value of any point on the surface of the impurities;

[0021] Determining the range of stress concentration caused by the impurities according to the intrinsic strain includes: determining the range of stress concentration caused by the impurities according to the intrinsic strain, the stiffness matrix, the first coordinate value, and the second coordinate value.

[0022] In this design, according to the stiffness matrix of the glass, the stiffness at each part of the glass can be determined. Then, in combination with the first coordinate value in the glass and the second coordinate value on the surface of the impurities, the range of stress concentration caused by the impurities can be determined. Through the above method, the range of stress concentration can be accurately obtained, which can effectively improve the accuracy of determining the explosion-proof grade of the glass.

[0023] In a possible design, determining the preset range where the impurities are located includes: determining the preset range where the impurities are located according to the fracture strength of the glass and the fracture toughness of the glass.

[0024] In this design, obtaining the fracture strength of the glass and obtaining the fracture toughness of the glass, according to the fracture strength and the fracture toughness, the preset range where the impurities are located can be determined, and further the multiple second stress values can be screened, so as to obtain multiple first stress values, which is beneficial to improving the accuracy of determining the explosion-proof grade of the glass.

[0025] Determining the explosion-proof grade of the glass according to the average stress value and the preset strength value of the glass includes: based on the average stress value being greater than the preset strength value of the glass, determining that the explosion-proof grade of the glass is greater than or equal to the set grade; based on the average stress value being less than the preset strength value of the glass, determining that the explosion-proof grade of the glass is less than the set grade.

[0026] In this design, when the average stress value is greater than the preset strength value of the glass, it indicates that the explosion-proof level of the tested glass is higher, that is, the explosion-proof level of the tested glass is greater than the set level or the explosion-proof level of the glass is equal to the set level. The average stress value around the impurities is smaller, and the glass is less likely to crack, making it less likely for the glass to break. The tested glass can be considered as a qualified product, and when using qualified glass, the user's safety can be improved.

[0027] When the average stress value is smaller than the preset strength value of the glass, it means that the explosion-proof level of the tested glass is low, that is, the explosion-proof level of the tested glass is lower than the set level. The average stress value around the impurities is large, and the glass is prone to cracks, which makes the glass prone to breakage. It can be considered that the tested glass is inferior. When using inferior glass, it is difficult to ensure the safety of users. When inferior glass is found, it can be screened out to prevent inferior glass from entering the market.

[0028] In a possible design, after determining that the explosion-proof level of the glass is equal to or less than a set level, the process further includes: outputting a prompt message.

[0029] In this design, when the explosion-proof grade of the glass is detected to be lower than the set grade, it means that the explosion-proof grade of the glass is low, and the glass is prone to cracks, which is prone to self-explosion. In order to remind the staff that the explosion-proof grade of the glass currently being tested is low, a prompt message can be output, and the staff can understand that the glass currently being tested is of this grade according to the prompt message, so that the staff can handle the glass with the explosion-proof grade and avoid the problem that the glass with the low explosion-proof grade is not discovered by the staff in time.

[0030] When it is determined that the explosion-proof grade of the glass is less than the set grade, the glass can also be marked. The staff can determine the qualified products and the inferior products in the glass according to the mark. The mark can be affixed with identification information on the glass, or the mark can be recorded as the production serial number of the glass.

[0031] Of course, in other designs, glass with an explosion-proof level greater than or equal to the set level and glass with an explosion-proof level less than the set level can also be classified. For example, qualified glass can be transferred to the first production line, and such glass can be transferred to the second production line, so that the staff can handle such products in a unified manner.

[0032] In a possible design, the prompt information includes: sound information and / or light information.

[0033] In this design, the prompt information can be sound information. For example, a speaker or a buzzer is installed on the detection device. When such glass is detected, the speaker or the buzzer will sound a reminder to remind the user to check and handle such products in time to avoid the problem of inferior glass not being discovered by the user.

[0034] The prompt information can also be light information. For example, a warning light is installed on the detection equipment. When such glass is detected, the warning light will provide a light reminder to remind the user to check and handle such products in time to avoid the problem of inferior glass not being discovered by the user.

[0035] Of course, the prompt information can also include both sound information and light information. For example, when the user's working environment is noisy, it may be difficult to hear the sound information, and the light information can serve as a prompt. Or, when the user is not facing the detection device, it may be impossible to obtain the light information, and the sound information can serve as a prompt. Using both sound information and light information as prompt information can effectively improve the prompt effect.

[0036] In one possible design, the impurities include nickel sulfide impurities and elemental silicon impurities.

[0037] In this design, the impurities inside the glass are mainly nickel sulfide and silicon. The stable state of nickel sulfide under high temperature conditions is α nickel sulfide, and the stable state under normal temperature conditions is β nickel sulfide. Under the rapid cooling conditions of the tempering process, the phase transition process from α nickel sulfide to β nickel sulfide does not have time to occur. The nickel sulfide inside the tempered glass exists in the state of α nickel sulfide, but the phase transition from α nickel sulfide to β nickel sulfide will also occur during use, accompanied by a volume expansion of 2% to 4%, which will cause stress concentration around the impurities. At the same time, the difference in the thermal expansion coefficient of nickel sulfide and silicon and the thermal expansion coefficient of glass will also cause stress concentration around the impurities.

[0038] In a possible design, after determining that the explosion-proof level of the glass is less than the set level, the method further includes: counting the glasses that meet the explosion-proof level less than the set level.

[0039] In this design, when it is detected that the explosion-proof level of the glass is lower than the set level, it means that the explosion-proof level of the glass is low, and the glass is prone to cracks, which is prone to self-explosion. When it is determined that the current explosion-proof level of the glass is low, the glass with an explosion-proof level lower than the set level is counted. When a glass with a low explosion-proof level is detected, a count is added, which is convenient for subsequent statistics of the number of such products in the mass-produced glass, so as to facilitate the determination of whether the production process needs to be adjusted according to the defective rate.

[0040] Second aspect, the present invention provides a device for detecting the quality of glass, comprising: an acquisition unit, configured to acquire the temperature change value and the radius change value of impurities in the glass during the process of heating the glass from the initial temperature to the softening temperature; a first determination unit, configured to determine the average stress value within a preset range of the position where the impurities are located according to the temperature change value and the radius change value of the impurities; a second determination unit, configured to determine the explosion-proof grade of the glass according to the average stress value and the preset strength value of the glass.

[0041] The device for detecting the quality of glass provided by the present invention needs to acquire the temperature change value of the impurities during the heating process and the radius change value of the impurities during the heating process. Specifically, in order to improve the strength of the glass, the glass usually needs to be tempered. During the tempering process, the glass needs to be heated above the softening temperature first, and then rapidly quenched. During the heating process of the glass, the temperature of the impurities in the glass will also increase. However, due to the different materials of the impurities and the glass, the temperature change situation and the volume ratio after heating of the impurities are different from those of the glass, resulting in stress concentration around the impurities. When the strain stress around the impurities is large, it is easy to cause cracks in the glass.

[0042] During the heating process of the glass, acquire the temperature change value of the impurities and the radius change value of the impurities, and determine the average stress value within a preset range of the position where the impurities are located according to the temperature change value and the radius change value. According to the strength criterion of brittle material fracture, for a brittle material in a non-uniform stress field with a large stress gradient, the critical state of crack initiation depends on the average stress in the extended area, rather than the maximum stress. When the average stress in the extended area reaches the critical value, the brittle material will fracture in this area. Compare the average stress value with the preset strength value of the glass, and determine the explosion-proof grade of the glass according to the comparison result of the average stress value and the preset strength value. According to the explosion-proof grade of the glass, it can be determined whether the detected glass is a qualified product or a substandard product.

[0043] During the process of determining the explosion-proof grade of the glass, the present invention fully considers the influence of the parameter change value of the impurities on the explosion-proof grade of the glass. Compared with the method of only measuring the internal strength of the glass, the detection accuracy of the explosion-proof grade of the glass by the present invention is relatively high, and the glass belonging to substandard products is not likely to flow into the market. During the use of the glass belonging to qualified products by users, cracks are not likely to appear in the glass, so that the glass is not likely to break, which can effectively improve the use safety of the glass by users.

[0044] The preset strength value of the glass can be the internal strength of the glass, and the internal strength of the glass can be detected and acquired by equipment in related technologies.

[0045] In a possible design, the first determining unit is specifically configured to: determine the intrinsic strain of the impurity according to the temperature change value and the radius change value of the impurity; and determine the average stress value within a preset range of the position where the impurity is located according to the intrinsic strain.

[0046] In this design, during the heating process of the glass, the temperature of the impurity also increases. As the temperature of the impurity increases, the temperature of the impurity itself changes, and the impurity expands due to heat, so that the temperature change value of the impurity can be obtained and the radius change value of the impurity can be acquired. The intrinsic strain of the impurity can be determined according to the temperature change value and the radius change value of the impurity. The intrinsic strain reflects the deformation condition of the impurity. When the impurity deforms, a stress concentration phenomenon will be formed around it. The average stress value within a preset range of the position where the impurity is located is determined according to the deformation condition of the impurity, and then the explosion-proof level of the impurity can be determined. When determining the explosion-proof level of the impurity, the influence of the deformation condition of the impurity on the explosion-proof level of the glass is considered, which is beneficial to improving the detection accuracy of the explosion-proof level of the glass.

[0047] In a possible design, the first determining unit is specifically configured to: determine a plurality of first stress values within a preset range of the position where the impurity is located according to the intrinsic strain; and determine the average stress value within a preset range of the position where the impurity is located in the glass according to the plurality of first stress values.

[0048] In this design, the intrinsic strain reflects the deformation condition of the impurity. According to the deformation condition of the impurity, a plurality of first stress values within a preset range of the position where the impurity is located can be obtained. The critical state of the glass for crack initiation depends on the average stress in the propagation region rather than the maximum stress. Therefore, it is necessary to determine the average stress value according to the plurality of first stress values, and then compare the average stress value with the strength inside the glass to determine whether the explosion-proof level of the glass meets the set level, which is beneficial to improving the detection accuracy.

[0049] In a possible design, the first determining unit is further configured to: determine a first sub-intrinsic strain according to the temperature change value of the impurity; determine a second sub-intrinsic strain according to the radius change value of the impurity; and determine the intrinsic strain of the impurity according to the first sub-intrinsic strain and the second sub-intrinsic strain; wherein, the expansion coefficients of the impurity and the glass are different, which causes the first sub-intrinsic strain, and the impurity causes the second sub-intrinsic strain due to volume expansion.

[0050] In this design, the impurity can generate an intrinsic strain, and the intrinsic strain includes a first sub-intrinsic strain and a second sub-intrinsic strain. Specifically, since the materials of the glass and the impurity are different, the thermal expansion coefficients of the glass and the impurity are also different. Therefore, during the heating process of the glass, the deformation amounts of the unit volume of the glass and the impurity are different. The first sub-intrinsic strain of the impurity can be obtained according to the thermal expansion coefficient of the glass, the thermal expansion coefficient of the impurity, the temperature of the impurity and the change value.

[0051] During the heating process of the glass, the impurities will undergo a phase change. Due to the phase change, the radius of the impurities will increase. The second sub-eigenstrain of the impurities can be obtained from the initial radius of the impurities and the value of the radius change of the impurities. Combining the first sub-eigenstrain and the second sub-eigenstrain, the eigenstrain of the impurities can be obtained.

[0052] Based on the first sub-eigenstrain caused by the different thermal expansion coefficients of the impurities and the glass, and the second sub-eigenstrain caused by the expansion of the impurities due to phase change, the eigenstrain of the impurities is determined. Combining the first sub-eigenstrain and the second sub-eigenstrain can improve the accuracy of obtaining the eigenstrain of the impurities, and further improve the accuracy of determining the explosion-proof grade of the glass.

[0053] In a possible design, the first determination unit is specifically used for: determining the range of stress concentration caused by the impurities according to the eigenstrain; determining multiple second stress values within the range of stress concentration according to the range of stress concentration; determining a preset range of the position where the impurities are located, and screening multiple second stress values within the range of stress concentration to obtain multiple first stress values; where the preset range of the position where the impurities are located is within the range of stress concentration.

[0054] In this design, during the heating process of the glass, the impurities will undergo eigenstrain, and the eigenstrain reflects the deformation of the impurities. According to the deformation of the impurities, the range of stress concentration caused by the impurities can be determined. When determining the range of stress concentration, the second stress value at any position within the stress range can be obtained, that is, multiple second stress values within the range of stress concentration are obtained. However, although there are multiple second stress values within the range of stress concentration, the stress values at the edges within the range of stress concentration may be small, and the small stress values have little impact on the generation of cracks in the glass. Therefore, in order to reduce the calculation amount, a preset range of the position where the impurities are located can be determined. The range of stress concentration includes the preset range of the position where the impurities are located. Multiple second stress values are screened, and the second stress values within the preset range are retained. These second stress values are the first stress values. Thus, multiple first stress values are determined, and then the average stress value is determined according to the multiple first stress values, and further the explosion-proof grade of the glass can be determined.

[0055] In a possible design, the acquisition unit is further used for: acquiring the stiffness matrix of the glass, the first coordinate value of any point in the glass, and the second coordinate value of any point on the surface of the impurities; the first determination unit is specifically used for: determining the range of stress concentration caused by the impurities according to the eigenstrain, the stiffness matrix, the first coordinate value, and the second coordinate value.

[0056] In this design, according to the stiffness matrix of the glass, the stiffness at each location in the glass can be determined. Then, by combining the first coordinate value in the glass and the second coordinate value of the impurity surface, the range of stress concentration caused by the impurity can be determined. Through the above method, the range of stress concentration can be accurately obtained, which can effectively improve the accuracy of determining the explosion-proof level of the glass.

[0057] In a possible design, the obtaining unit is specifically used for: determining a preset range of the location of the impurity according to the fracture strength of the glass and the fracture toughness of the glass.

[0058] In this design, the fracture strength of the glass is obtained and the fracture toughness of the glass is obtained. According to the fracture strength and fracture toughness, a preset range of the location of the impurity can be determined. Furthermore, multiple second stress values can be screened, so as to obtain multiple first stress values, which is beneficial to improving the accuracy of determining the explosion-proof level of the glass.

[0059] Determine the explosion-proof level of the glass according to the average stress value and the preset strength value of the glass, including: based on the average stress value being greater than the preset strength value of the glass, determine that the explosion-proof level of the glass is greater than or equal to the set level; based on the average stress value being less than the preset strength value of the glass, determine that the explosion-proof level of the glass is less than the set level.

[0060] In a possible design, the second determination unit is specifically used for: based on the average stress value being greater than the preset strength value of the glass, determine that the explosion-proof level of the glass is greater than or equal to the set level;

[0061] Based on the average stress value being less than the preset strength value of the glass, determine that the explosion-proof level of the glass is less than the set level.

[0062] In this design, when the average stress value is greater than the preset strength value of the glass, it indicates that the explosion-proof level of the detected glass is relatively high, that is, the explosion-proof level of the detected glass is greater than the set level or the explosion-proof level of the glass is equal to the set level. The average stress value around the impurity is small, and it is not easy for the glass to crack, so that it is not easy for the glass to break. It can be considered that the detected glass is a qualified product. When using the glass belonging to the qualified product, the use safety of the user can be improved.

[0063] When the average stress value is less than the preset strength value of the glass, it indicates that the explosion-proof level of the detected glass is relatively low, that is, the explosion-proof level of the detected glass is less than the set level. The average stress value around the impurity is large, and it is easy for the glass to crack, so that it is easy for the glass to break. It can be considered that the detected glass is a defective product. When using the glass belonging to the defective product, it is difficult to ensure the use safety of the user. When finding the glass belonging to the defective product, the glass belonging to the defective product can be screened out to prevent the glass belonging to the defective product from entering the market.

[0064] In a possible design, the glass quality detection device further includes: an output unit, and the output unit is configured to: output a prompt message.

[0065] In this design, when it is detected that the explosion-proof grade of the glass is lower than the set grade, it indicates that the explosion-proof grade of the glass is relatively low, and the glass is prone to cracking, thus prone to self-explosion. In order to remind the staff that the explosion-proof grade of the currently detected glass is relatively low, a prompt message can be output. The staff can understand that the currently detected glass is a substandard product based on the prompt message, so as to facilitate the staff to process the glass with a low explosion-proof grade and avoid the problem that the glass with a low explosion-proof grade is not discovered by the staff in time.

[0066] When it is determined that the explosion-proof grade of the glass is lower than the set grade, the glass can also be marked. The staff can determine the qualified products and substandard products in the glass based on the mark. The mark can be to stick identification information on the glass, or the mark can be to record the production serial number of the glass.

[0067] Of course, in other designs, it is also possible to classify the glass with an explosion-proof grade greater than or equal to the set grade and the glass with an explosion-proof grade lower than the set grade. For example, transfer the glass belonging to the qualified products to the first production line and transfer the substandard glass to the second production line, which is convenient for the staff to uniformly process the substandard products.

[0068] In a possible design, the prompt message includes: sound information and / or light information.

[0069] In this design, the prompt message can be sound information. For example, a speaker or buzzer is installed on the detection device. When substandard glass is detected, the speaker or buzzer makes a sound reminder to remind the user to check and process the substandard product in time, and avoid the problem that the substandard glass is not discovered by the user in time.

[0070] The prompt message can also be light information. For example, a warning light is installed on the detection device. When substandard glass is detected, the warning light gives a light reminder to remind the user to check and process the substandard product in time, and avoid the problem that the substandard glass is not discovered by the user in time.

[0071] Of course, the prompt message can also include both sound information and light information.

[0072] In a possible design, the impurities include nickel sulfide impurities and elemental silicon impurities.

[0073] In this design, the impurities inside the glass are mainly nickel sulfide and silicon. The stable state of nickel sulfide under high temperature conditions is α nickel sulfide, and the stable state under normal temperature conditions is β nickel sulfide. Under the rapid cooling conditions of the tempering process, the phase transition process from α nickel sulfide to β nickel sulfide does not have time to occur. The nickel sulfide inside the tempered glass exists in the state of α nickel sulfide, but the phase transition from α nickel sulfide to β nickel sulfide will also occur during use, accompanied by a volume expansion of 2% to 4%, which will cause stress concentration around the impurities. At the same time, the difference in the thermal expansion coefficient of nickel sulfide and silicon and the thermal expansion coefficient of glass will also cause stress concentration around the impurities.

[0074] In a possible design, the glass quality detection device further includes: a counting unit, which is used to count the glasses that meet the explosion-proof level less than the set level.

[0075] In this design, when it is detected that the explosion-proof level of the glass is lower than the set level, it means that the explosion-proof level of the glass is low, and the glass is prone to cracks, which is prone to self-explosion. When it is determined that the current explosion-proof level of the glass is low, the glass with an explosion-proof level lower than the set level is counted. When a glass with a low explosion-proof level is detected, a count is added, which is convenient for subsequent statistics of the number of such products in the mass-produced glass, so as to facilitate the determination of whether the production process needs to be adjusted according to the defective rate.

[0076] In a third aspect, the present invention provides a glass quality detection device, comprising: a controller and a memory, wherein the memory stores programs or instructions, and the controller implements the steps of any of the above methods when executing the programs or instructions in the memory.

[0077] In a fourth aspect, the present invention provides a readable storage medium, on which a program or instruction is stored, and when the program or instruction is executed by a processor, the steps of any of the above methods are implemented.

[0078] According to a fifth aspect of the present invention, the present invention provides a detection device, comprising: any of the above-mentioned glass quality detection devices; or a readable storage medium.

[0079] Additional aspects and advantages of the present invention will become apparent from the following description or may be learned by practice of the present invention. BRIEF DESCRIPTION OF THE DRAWINGS

[0080] The above and / or additional aspects and advantages of the present invention will become apparent and easily understood from the description of the embodiments in conjunction with the following drawings, in which:

[0081] Figure 1 A schematic flow chart of a method for detecting glass quality in an embodiment of the present invention is shown;

[0082] Figure 2The schematic block diagram of the detection device for the quality of glass in the embodiments of the present invention is shown. Detailed implementation manners

[0083] In order to be able to more clearly understand the above objects, features, and advantages of the present invention, the present invention will be further described in detail below in conjunction with the accompanying drawings and specific implementation manners. It should be noted that, without conflict, the embodiments of the present application and the features in the embodiments may be combined with each other.

[0084] In the following description, many specific details are set forth in order to fully understand the present invention. However, the present invention may also be implemented in other ways different from those described herein. Therefore, the protection scope of the present invention is not limited by the specific embodiments disclosed below.

[0085] The following refers to Figure 1 and Figure 2 Describe a method for detecting the quality of glass, a device for detecting the quality of glass, a readable storage medium, and a detection device provided according to some embodiments of the present invention.

[0086] As Figure 1 shown, in some embodiments of the present invention, a method for detecting the quality of glass is proposed, including:

[0087] Step 102, during the process of heating the glass from the initial temperature to the softening temperature, obtain the temperature change value and the radius change value of the impurities in the glass;

[0088] Step 104, based on the temperature change value and the radius change value of the impurities, obtain the average stress value within a preset range of the position where the impurities are located;

[0089] Step 106, based on the average stress value and the preset strength value of the glass, obtain the explosion-proof grade of the glass.

[0090] The method for detecting the quality of glass provided in this embodiment needs to obtain the temperature change value of the impurities during the heating process and the radius change value of the impurities during the heating process. Specifically, in order to improve the strength of the glass, the glass usually needs to be tempered. During the tempering process, the glass needs to be heated above the softening temperature first, and then the glass is rapidly quenched. During the heating process of the glass, the temperature of the impurities in the glass will also increase. However, due to the different materials of the impurities and the glass, the temperature change situation and the volume ratio after heating of the impurities are different from those of the glass, resulting in stress concentration around the impurities. When the strain stress around the impurities is large, it is easy to cause cracks in the glass.

[0091] During the heating process of the glass, obtain the temperature change value of the impurity and the radius change value of the impurity, and determine the average stress value within the preset range of the position where the impurity is located according to the temperature change value and the radius change value. According to the strength criterion for brittle material fracture, for a brittle material in a non-uniform stress field with a large stress gradient, the critical state of crack initiation depends on the average stress in the extended region, rather than the maximum stress. When the average stress in the extended region reaches the critical value, the brittle material will fracture in this region. Compare the average stress value with the preset strength value of the glass, and determine the explosion-proof grade of the glass according to the comparison result of the average stress value and the preset strength value. According to the explosion-proof grade of the glass, it can be determined whether the tested glass is a qualified product or a substandard product.

[0092] In the process of determining the explosion-proof grade of the glass, the present invention fully considers the influence of the parameter change value of the impurity on the explosion-proof grade of the glass. Compared with the method of only measuring the internal strength of the glass, the detection accuracy of the explosion-proof grade of the glass in the present invention is relatively high, and it is not easy for substandard glass to flow into the market. During the use of the glass that belongs to the qualified product by the user, it is not easy for the glass to have cracks, so that the glass is not easy to break, which can effectively improve the use safety of the glass by the user.

[0093] The preset strength value of the glass can be the internal strength of the glass, and the internal strength of the glass can be detected and obtained by equipment in related technologies.

[0094] In a possible embodiment, the step of obtaining the average stress value within the preset range of the position where the impurity is located based on the temperature change value of the impurity and the radius change value of the impurity includes: obtaining the eigenstrain of the impurity based on the temperature change value of the impurity and the radius change value of the impurity; obtaining the average stress value within the preset range of the position where the impurity is located based on the eigenstrain.

[0095] In this embodiment, during the heating process of the glass, the temperature of the impurity will also increase. As the temperature of the impurity increases, the temperature of the impurity itself changes, and the impurity expands due to heat, so that the temperature change value of the impurity and the radius change value of the impurity can be obtained. The eigenstrain of the impurity can be determined according to the temperature change value and the radius change value of the impurity. The eigenstrain reflects the deformation of the impurity. When the impurity deforms, a stress concentration phenomenon will be formed around it. The average stress value within the preset range of the position where the impurity is located is determined according to the deformation of the impurity, and then the explosion-proof grade of the impurity can be determined. When determining the explosion-proof grade of the impurity, the influence of the deformation of the impurity on the explosion-proof grade of the glass is considered, which is beneficial to improving the detection accuracy of the explosion-proof grade of the glass.

[0096] In a possible embodiment, the step of obtaining the average stress value within a preset range of the position where the impurity is located based on the eigenstrain includes: obtaining a plurality of first stress values within a preset range of the position where the impurity is located based on the eigenstrain; and obtaining the average stress value within a preset range of the position where the impurity is located in the glass based on the plurality of first stress values.

[0097] In this embodiment, the eigenstrain reflects the deformation of the impurity. According to the deformation of the impurity, a plurality of first stress values within a preset range of the position where the impurity is located can be obtained. The critical state of glass crack initiation depends on the average stress in the propagation region rather than the maximum stress. Therefore, it is necessary to determine the average stress value based on the plurality of first stress values, and then compare the average stress value with the strength inside the glass to determine whether the explosion-proof grade of the glass meets the set grade, which is beneficial to improving the detection accuracy.

[0098] In a possible embodiment, obtaining the eigenstrain of the impurity based on the temperature change value and the radius change value of the impurity includes: obtaining a first sub-eigenstrain based on the temperature change value of the impurity; obtaining a second sub-eigenstrain based on the radius change value of the impurity; combining the first sub-eigenstrain and the second sub-eigenstrain to obtain the eigenstrain of the impurity; wherein, the first sub-eigenstrain is caused by the different expansion coefficients of the impurity and the glass, and the second sub-eigenstrain is caused by the volume expansion of the impurity.

[0099] In this embodiment, the impurity can undergo eigenstrain, and the eigenstrain includes a first sub-eigenstrain and a second sub-eigenstrain. Specifically, since the materials of the glass and the impurity are different, the thermal expansion coefficients of the glass and the impurity are also different. Therefore, during the heating process of the glass, the deformation amounts of the unit volume of the glass and the impurity are different. According to the thermal expansion coefficient of the glass, the thermal expansion coefficient of the impurity, and the temperature change value of the impurity, the first sub-eigenstrain of the impurity can be obtained.

[0100] During the heating process of the glass, the impurity will undergo a phase change, and the radius of the impurity will increase due to the phase change. The second sub-eigenstrain of the impurity can be obtained through the initial radius of the impurity and the radius change value of the impurity. Combining the first sub-eigenstrain and the second sub-eigenstrain, the eigenstrain of the impurity can be obtained.

[0101] Determining the eigenstrain of the impurity based on the first sub-eigenstrain caused by the different thermal expansion coefficients of the impurity and the glass and the second sub-eigenstrain caused by the volume expansion of the impurity due to the phase change of the impurity, and combining the first sub-eigenstrain and the second sub-eigenstrain can improve the accuracy of obtaining the eigenstrain of the impurity, and further improve the accuracy of determining the explosion-proof grade of the glass.

[0102] Exemplarily, see the following formula (1):

[0103]

[0104] Among them, is the first sub - eigenstrain, α1 is the thermal expansion coefficient of the glass, α2 is the thermal expansion coefficient of the impurity, ΔT is the temperature change value of the impurity, and δ ij is the Kronecker function (when i = j, the value of δ ij is 1, when i ≠ j, the value of δ ij is 0).

[0105] Formula (2) is as follows:

[0106]

[0107] Among them, is the second sub - eigenstrain, R is the radius of the impurity before the phase change, ΔR is the change value of the radius of the impurity before and after the phase change, and the radius of the impurity can be obtained by observing with a scanning electron microscope.

[0108] The eigenstrain of the impurity That is, the eigenstrain of the impurity is the sum of the first sub - eigenstrain and the second sub - eigenstrain.

[0109] In a possible embodiment, the step of obtaining multiple first stress values within a preset range of the position where the impurity is located based on the eigenstrain includes: obtaining the range of stress concentration caused by the impurity based on the eigenstrain; obtaining multiple second stress values within the range of stress concentration based on the range of stress concentration; obtaining the preset range of the position where the impurity is located, and determining multiple second stress values within the range of stress concentration, thereby obtaining multiple first stress values; wherein, the preset range of the position where the impurity is located is within the range of stress concentration.

[0110] In this embodiment, during the heating process of the glass, the impurity will undergo eigenstrain, and the eigenstrain reflects the deformation of the impurity. According to the deformation of the impurity, the range of stress concentration caused by the impurity can be determined. When determining the range of stress concentration, the second stress value at any position within the stress range can be obtained, that is, obtaining multiple second stress values within the range of stress concentration. However, although there are multiple second stress values within the range of stress concentration, the stress values at the edges within the range of stress concentration may be small, and the small stress values have little impact on the generation of cracks in the glass. Therefore, in order to reduce the calculation amount, the preset range of the position where the impurity is located can be determined. The range of stress concentration includes the preset range of the position where the impurity is located. Screen the multiple second stress values, and retain the second stress values within the preset range. This part of the second stress values is the first stress value. Thus, multiple first stress values are determined, and then the average stress value is determined according to the multiple first stress values, and further the explosion - proof grade of the glass can be determined.

[0111] In a possible embodiment, before the step of obtaining multiple stress values within a preset range from impurities in the glass based on the eigenstrain, the method further includes: obtaining the stiffness matrix of the glass, obtaining the first coordinate value of any point in the glass, and obtaining the second coordinate value of any point on the surface of the impurity; based on the eigenstrain, obtaining the range of stress concentration caused by the impurity, including: determining the range of stress concentration caused by the impurity according to the eigenstrain, the stiffness matrix, the first coordinate value, and the second coordinate value.

[0112] In this embodiment, according to the stiffness matrix of the glass, the stiffness at each location in the glass can be determined. Then, in combination with the first coordinate value in the glass and the second coordinate value on the surface of the impurity, the range of stress concentration caused by the impurity can be determined. Through the above method, the range of stress concentration can be accurately obtained, which can effectively improve the accuracy of determining the explosion-proof grade of the glass.

[0113] In a possible embodiment, obtaining the preset range of the location where the impurity is located includes: obtaining the preset range of the location where the impurity is located based on the fracture strength and fracture toughness of the glass.

[0114] In this embodiment, obtaining the fracture strength of the glass and obtaining the fracture toughness of the glass. According to the fracture strength and fracture toughness, the preset range of the location where the impurity is located can be determined, and then the multiple second stress values can be screened to obtain multiple first stress values, which is beneficial to improving the accuracy of determining the explosion-proof grade of the glass.

[0115] Exemplarily, as shown in the following formula (3):

[0116]

[0117] The range of stress concentration caused by the impurity can be expressed as the surface integral of the impurity, that is, ε ij (x). G ik，l and G jk，l is the first derivative of the Green's function, C klmn is the stiffness matrix of the glass, x is the first coordinate value of any point in the glass, x' is the second coordinate value of any point on the surface of the impurity, n i and n j are the outer normal directions of the impurity surface, and the moment is the eigenstrain of the impurity in the above embodiment.

[0118] The first derivative of the Green's function in formula (3) can be calculated from the positional relationship between x and x', as shown in the following formula (4):

[0119]

[0120] Where, i, m, and n represent the three components of the coordinate axes. The value range of i, m, and n is from 1 to 3, and i ≠ m ≠ n.

[0121] The second stress value can be calculated based on the surface integral of the impurity, as shown in the following formula (5):

[0122]

[0123] where E is the Young's modulus of the glass, v is the Poisson's ratio of the glass, and ε ij and ε kk are the surface integrals of the impurity, and are the intrinsic strains of the impurity. i, j, and k represent the three components of the coordinate axes. The value range of i, j, and k is from 1 to 3, and i ≠ j ≠ k.

[0124] See the following formula (6):

[0125] where β refers to the thickness of the preset range where the impurity is located; σ b is the fracture strength of the glass, which can be represented by the bending strength of the material surface. KIC is the fracture toughness of the glass. For glass, its average value is 0.5 MPa m 1 / 2 . The calculated thickness of the preset range where the impurity is located is 0.032 mm.

[0126] The average stress value can be obtained through the following formula (7):

[0127]

[0128] where r refers to the distance from the expansion region to the center of the impurity. The r in formula (7) can be represented by x in formula (3), where x1, x2, and x3 are the coordinate values of any point within the preset range where the impurity is located relative to the center of the impurity in the x, y, and z directions.

[0129] In a possible embodiment, based on the average stress value and the preset strength value of the glass, the explosion-proof grade of the glass is obtained, including: when the preset strength value of the glass is less than the average stress value, it is determined that the explosion-proof grade of the glass is greater than or equal to the set grade; when the preset strength value of the glass is greater than the average stress value, it is determined that the explosion-proof grade of the glass is less than the set grade.

[0130] In this embodiment, when the average stress value is greater than the preset strength value of the glass, it indicates that the explosion-proof level of the detected glass is relatively high, that is, the explosion-proof level of the detected glass is greater than the set level or the explosion-proof level of the glass is equal to the set level. The average stress value around the impurities is small, and the glass is not likely to crack, so that the glass is not likely to break. It can be considered that the detected glass is a qualified product. When using the glass that belongs to the qualified product, the use safety of the user can be improved.

[0131] When the average stress value is smaller than the preset strength value of the glass, it indicates that the explosion-proof level of the detected glass is relatively low, that is, the explosion-proof level of the detected glass is less than the set level. The average stress value around the impurities is large, and the glass is likely to crack, so that the glass is likely to break. It can be considered that the detected glass is a substandard product. When using the glass that belongs to the substandard product, it is difficult to ensure the use safety of the user. When finding the glass that belongs to the substandard product, the glass that belongs to the substandard product can be screened out to prevent the glass that belongs to the substandard product from flowing into the market.

[0132] In a possible embodiment, after determining that the explosion-proof of the glass is less than or equal to the set level, it further includes: outputting a prompt message.

[0133] In this embodiment, when it is detected that the explosion-proof level of the glass is less than the set level, it indicates that the explosion-proof level of the glass is relatively low, and the glass is likely to generate cracks, thus being likely to have a self-explosion phenomenon. In order to remind the staff that the explosion-proof level of the currently detected glass is relatively low, a prompt message can be output. The staff can understand that the currently detected glass is such a substandard product according to the prompt message, so as to facilitate the staff to process the glass with a low explosion-proof level and avoid the problem that the glass with a low explosion-proof level is not discovered by the staff in time.

[0134] When determining that the explosion-proof level of the glass is less than the set level, the glass can also be marked. The staff can determine the qualified products and substandard products in the glass according to the mark. The mark can be to stick identification information on the glass, or the mark can be to record the production serial number of the glass.

[0135] Of course, in other embodiments, the glass with an explosion-proof level greater than or equal to the set level and the glass with an explosion-proof level less than the set level can also be classified. For example, the glass that belongs to the qualified product is transferred to the first production line, and the glass that belongs to the substandard product is transferred to the second production line, which is convenient for the staff to uniformly process the substandard products.

[0136] In a possible embodiment, the prompt message can be a sound message. For example, a speaker or a buzzer is installed on the detection device. When the substandard glass is detected, the speaker or the buzzer makes a sound reminder to remind the user to view and process the substandard product in time and avoid the problem that the substandard glass is not discovered by the user in time.

[0137] The prompt information can also be light information. For example, a warning light is installed on the detection equipment. When such glass is detected, the warning light will provide a light reminder to remind the user to check and handle such products in time to avoid the problem of inferior glass not being discovered by the user.

[0138] Of course, the prompt information can also include both sound information and light information. For example, when the user's working environment is noisy, it may be difficult to hear the sound information, and the light information can serve as a prompt. Or, when the user is not facing the detection device, it may be impossible to obtain the light information, and the sound information can serve as a prompt. Using both sound information and light information as prompt information can effectively improve the prompt effect.

[0139] In a possible embodiment, the impurities include nickel sulfide impurities and elemental silicon impurities.

[0140] In this embodiment, the impurities inside the glass are mainly nickel sulfide and elemental silicon. The stable state of nickel sulfide under high temperature conditions is α nickel sulfide, and the stable state under normal temperature conditions is β nickel sulfide. Under the rapid cooling conditions of the tempering process, the phase transition process of α nickel sulfide to β nickel sulfide does not have time to occur. The nickel sulfide inside the tempered glass exists in the state of α nickel sulfide, but the phase transition of α nickel sulfide to β nickel sulfide will also occur during use, accompanied by a volume expansion of 2% to 4%, which will cause the problem of stress concentration around the impurities. At the same time, the difference in the thermal expansion coefficient of nickel sulfide and elemental silicon and the thermal expansion coefficient of glass will also cause stress concentration around the impurities. The material parameters of glass, α nickel sulfide, β nickel sulfide and elemental silicon are shown in Table 1.

[0141] Table 1

[0142] Material parameters Glass α nickel sulfide β nickel sulfide Elemental silicon Young's modulus GPa 70 80 70 190 Poisson's ratio 0.22 0.27 0.22 0.278 Coefficient of thermal expansion (solid state) (1 / °C) 9E-6 16.3E-6 14.5E-6 (3～5)E-6 <![CDATA[Density kg / m 3 > 2500 5460 5250 2320-2340

[0143] In a possible embodiment, after determining that the explosion-proof level of the glass is less than the set level, the method further includes: counting the glasses that meet the requirement that the explosion-proof level is less than the set level.

[0144] In this embodiment, when it is detected that the explosion-proof level of the glass is lower than the set level, it means that the explosion-proof level of the glass is low, and the glass is prone to cracks, thereby easily causing self-explosion. When it is determined that the current explosion-proof level of the glass is low, the glass with an explosion-proof level lower than the set level is counted. When a glass with a low explosion-proof level is detected, a count is added, which is convenient for subsequent statistics of the number of such products in the mass-produced glass, so as to facilitate the determination of whether the production process needs to be adjusted according to the defective rate.

[0145] like Figure 2As shown, in some embodiments of the present invention, a glass quality detection device 200 is provided, including:

[0146] An acquisition unit 202, configured to acquire the temperature change value and the radius change value of impurities in the glass during the process of heating the glass from the initial temperature to the softening temperature;

[0147] A first determination unit 204, configured to obtain the average stress value within a preset range of the position where the impurities are located based on the temperature change value and the radius change value of the impurities;

[0148] A second determination unit 206, configured to obtain the explosion-proof grade of the glass based on the average stress value and the preset strength value of the glass.

[0149] The glass quality detection device provided in this embodiment needs to acquire the temperature change value of the impurities during the heating process and the radius change value of the impurities during the heating process. Specifically, in order to improve the strength of the glass, the glass usually needs to be tempered. During the tempering process, the glass needs to be heated above the softening temperature first, and then rapidly quenched. During the heating process of the glass, the temperature of the impurities in the glass will also increase. However, due to the different materials of the impurities and the glass, the temperature change situation and the volume ratio after heating of the impurities are different from those of the glass, resulting in stress concentration around the impurities. When the strain stress around the impurities is large, it is easy to cause cracks in the glass.

[0150] During the heating process of the glass, acquire the temperature change value of the impurities and the radius change value of the impurities, and determine the average stress value within a preset range of the position where the impurities are located according to the temperature change value and the radius change value. According to the strength criterion for brittle material fracture, for a brittle material in a non-uniform stress field with a large stress gradient, the critical state of crack initiation depends on the average stress in the extended region, rather than the maximum stress. When the average stress in the extended region reaches the critical value, the brittle material will fracture in this region. Compare the average stress value with the preset strength value of the glass, and determine the explosion-proof grade of the glass according to the comparison result of the average stress value and the preset strength value. According to the explosion-proof grade of the glass, it can be determined whether the detected glass is a qualified product or a substandard product.

[0151] During the process of determining the explosion-proof grade of the glass, the present invention fully considers the influence of the parameter change value of the impurities on the explosion-proof grade of the glass. Compared with the method of only measuring the internal strength of the glass, the detection accuracy of the explosion-proof grade of the glass in the present invention is relatively high, and the glass belonging to substandard products is not likely to flow into the market. During the use of the glass belonging to qualified products by users, the glass is not likely to have cracks, so that the glass is not likely to break, which can effectively improve the use safety of the glass by users.

[0152] The preset strength value of the glass can be the internal strength of the glass, and the internal strength of the glass can be detected and obtained by equipment in related technologies.

[0153] In a possible embodiment, the first determining unit is specifically configured to: obtain the intrinsic strain of the impurity based on the temperature change value and the radius change value of the impurity; and obtain the average stress value within a preset range of the position where the impurity is located based on the intrinsic strain.

[0154] In this embodiment, during the heating process of the glass, the temperature of the impurity also increases. As the temperature of the impurity increases, the temperature of the impurity itself changes, and the impurity expands due to heat, so that the temperature change value of the impurity can be known and the radius change value of the impurity can be obtained. The intrinsic strain of the impurity can be determined according to the temperature change value and the radius change value of the impurity. The intrinsic strain reflects the deformation of the impurity. When the impurity deforms, a stress concentration phenomenon will be formed around it. The average stress value within a preset range of the position where the impurity is located is determined according to the deformation of the impurity, and then the explosion-proof level of the impurity can be determined. When determining the explosion-proof level of the impurity, the influence of the deformation of the impurity on the explosion-proof level of the glass is considered, which is beneficial to improving the detection accuracy of the explosion-proof level of the glass.

[0155] In a possible embodiment, the first determining unit is specifically configured to: obtain a plurality of first stress values within a preset range of the position where the impurity is located based on the intrinsic strain; and obtain the average stress value within a preset range of the position where the impurity is located in the glass based on the plurality of first stress values.

[0156] In this embodiment, the intrinsic strain reflects the deformation of the impurity. According to the deformation of the impurity, a plurality of first stress values within a preset range of the position where the impurity is located can be obtained. The critical state of the glass for crack initiation depends on the average stress in the extended region rather than the maximum stress. Therefore, it is necessary to determine the average stress value according to the plurality of first stress values, and then compare the average stress value with the internal strength of the glass to determine whether the explosion-proof level of the glass meets the set level, which is beneficial to improving the detection accuracy.

[0157] In a possible embodiment, the first determining unit is further configured to: obtain a first sub-intrinsic strain based on the temperature change value of the impurity; obtain a second sub-intrinsic strain based on the radius change value of the impurity; and combine the first sub-intrinsic strain and the second sub-intrinsic strain to obtain the intrinsic strain of the impurity; wherein, the expansion coefficients of the impurity and the glass are different, which causes the first sub-intrinsic strain, and the impurity causes the second sub-intrinsic strain due to volume expansion.

[0158] In this embodiment, the impurity can undergo intrinsic strain, and the intrinsic strain includes a first sub-intrinsic strain and a second sub-intrinsic strain. Specifically, since the materials of the glass and the impurity are different, their thermal expansion coefficients are also different. Therefore, during the heating process of the glass, the deformation amounts of the unit volume of the glass and the impurity are different. According to the thermal expansion coefficient of the glass, the thermal expansion coefficient of the impurity, the temperature of the impurity, and the change value, the first sub-intrinsic strain of the impurity can be obtained.

[0159] During the heating process of the glass, the impurity will undergo a phase change, and the radius of the impurity will increase due to the phase change. The second sub-intrinsic strain of the impurity can be obtained through the initial radius of the impurity and the radius change value of the impurity. Combining the first sub-intrinsic strain and the second sub-intrinsic strain, the intrinsic strain of the impurity can be obtained.

[0160] Based on the first sub-intrinsic strain caused by the different thermal expansion coefficients of the impurity and the glass, and the second sub-intrinsic strain caused by the expansion of the impurity due to the phase change, the intrinsic strain of the impurity is determined. Combining the first sub-intrinsic strain and the second sub-intrinsic strain can improve the accuracy of obtaining the intrinsic strain of the impurity, and further improve the accuracy of determining the explosion-proof grade of the glass.

[0161] In a possible embodiment, the first determining unit is specifically configured to: based on the intrinsic strain, obtain the range of stress concentration caused by the impurity; based on the range of stress concentration, obtain multiple second stress values within the range of stress concentration; or determine multiple second stress values within the range of stress concentration according to a preset range of the position where the impurity is located, so as to obtain multiple first stress values; where the preset range of the position where the impurity is located is within the range of stress concentration.

[0162] In this embodiment, during the heating process of the glass, the impurity will undergo intrinsic strain, and the intrinsic strain reflects the deformation of the impurity. According to the deformation of the impurity, the range of stress concentration caused by the impurity can be determined. When determining the range of stress concentration, the second stress value at any position within the stress range can be obtained, that is, multiple second stress values within the range of stress concentration are obtained. However, although there are multiple second stress values within the range of stress concentration, the stress values at the edges within the range of stress concentration may be small, and the small stress values have little effect on the generation of cracks in the glass. Therefore, in order to reduce the calculation amount, a preset range of the position where the impurity is located can be determined. The range of stress concentration includes the preset range of the position where the impurity is located. The multiple second stress values are screened, and the second stress values within the preset range are retained. These second stress values are the first stress values. Thus, multiple first stress values are determined, and then the average stress value is determined according to the multiple first stress values, and further the explosion-proof grade of the glass can be determined.

[0163] In a possible embodiment, the obtaining unit is further configured to: obtain the stiffness matrix of the glass, or the first coordinate value of any point in the glass, and obtain the second coordinate value of any point on the surface of the impurity; the first determining unit is specifically configured to: determine the range of stress concentration caused by the impurity according to the eigenstrain, the stiffness matrix, the first coordinate value, and the second coordinate value.

[0164] In this embodiment, according to the stiffness matrix of the glass, the stiffness of each part of the glass can be determined. Then, in combination with the first coordinate value in the glass and the second coordinate value on the surface of the impurity, the range of stress concentration caused by the impurity can be determined. Through the above method, the range of stress concentration can be accurately obtained, which can effectively improve the accuracy of determining the explosion-proof grade of the glass.

[0165] In a possible embodiment, the obtaining unit is specifically configured to: obtain a preset range of the position where the impurity is located based on the fracture strength of the glass and the fracture toughness of the glass.

[0166] In this embodiment, the fracture strength of the glass and the fracture toughness of the glass are obtained. According to the fracture strength and the fracture toughness, the preset range of the position where the impurity is located can be determined, and then multiple second stress values can be screened to obtain multiple first stress values, which is beneficial to improving the accuracy of determining the explosion-proof grade of the glass.

[0167] Determine the explosion-proof grade of the glass according to the average stress value and the preset strength value of the glass, including: based on the preset strength value of the glass being less than the average stress value, determine that the explosion-proof grade of the glass is greater than or equal to the set grade; based on the preset strength value of the glass being greater than the average stress value, determine that the explosion-proof grade of the glass is less than the set grade.

[0168] In a possible embodiment, the second determining unit is specifically configured to: when the average stress value is greater than the preset strength value of the glass, determine that the explosion-proof grade of the glass is greater than or equal to the set grade; when the average stress value is less than the preset strength value of the glass, determine that the explosion-proof grade of the glass is less than the set grade.

[0169] In this embodiment, when the average stress value is greater than the preset strength value of the glass, it indicates that the explosion-proof grade of the detected glass is relatively high, that is, the explosion-proof grade of the detected glass is greater than the set grade or the explosion-proof grade of the glass is equal to the set grade. The average stress value around the impurity is small, and it is not easy for the glass to crack, so it is not easy for the glass to break. It can be considered that the detected glass is a qualified product. When using the glass belonging to the qualified product, the use safety of the user can be improved.

[0170] When the average stress value is smaller than the preset strength value of the glass, it means that the explosion-proof level of the tested glass is low, that is, the explosion-proof level of the tested glass is lower than the set level. The average stress value around the impurities is large, and the glass is prone to cracks, which makes the glass prone to breakage. It can be considered that the tested glass is inferior. When using inferior glass, it is difficult to ensure the safety of users. When inferior glass is found, it can be screened out to prevent inferior glass from entering the market.

[0171] In a possible embodiment, the glass quality detection device further includes: an output unit, and the output unit is used to output prompt information.

[0172] In this embodiment, when the explosion-proof grade of the glass is detected to be lower than the set grade, it indicates that the explosion-proof grade of the glass is low, and the glass is prone to cracking, thereby being prone to self-explosion. In order to remind the staff that the explosion-proof grade of the currently detected glass is low, a prompt message can be output, and the staff can understand that the currently detected glass is of this grade according to the prompt message, so that the staff can handle the glass with the explosion-proof grade, and avoid the problem that the glass with the low explosion-proof grade is not discovered by the staff in time.

[0173] When it is determined that the explosion-proof grade of the glass is less than the set grade, the glass can also be marked. The staff can determine the qualified products and the inferior products in the glass according to the mark. The mark can be affixed with identification information on the glass, or the mark can be recorded as the production serial number of the glass.

[0174] Of course, in other embodiments, glass with an explosion-proof level greater than or equal to the set level and glass with an explosion-proof level less than the set level can also be classified. For example, qualified glass can be transferred to the first production line, and such glass can be transferred to the second production line, so that the staff can handle such products in a unified manner.

[0175] In a possible embodiment, the prompt information may be sound information. For example, a speaker or a buzzer is installed on the detection device. When such glass is detected, the speaker or the buzzer emits a sound reminder to remind the user to check and handle such glass in time to avoid the problem of inferior glass not being discovered by the user.

[0176] The prompt information can also be light information. For example, a warning light is installed on the detection equipment. When such glass is detected, the warning light will provide a light reminder to remind the user to check and handle such products in time to avoid the problem of inferior glass not being discovered by the user.

[0177] Of course, the prompt information can also include both sound information and light information. For example, when the user's working environment is noisy, it may be difficult to hear the sound information, and the light information can serve as a prompt. Or, when the user is not facing the detection device, it may be impossible to obtain the light information, and the sound information can serve as a prompt. Using both sound information and light information as prompt information can effectively improve the prompt effect.

[0178] In a possible embodiment, the impurities include nickel sulfide impurities and elemental silicon impurities.

[0179] In this embodiment, the impurities inside the glass are mainly nickel sulfide and silicon. The stable state of nickel sulfide under high temperature conditions is α nickel sulfide, and the stable state under normal temperature conditions is β nickel sulfide. Under the rapid cooling conditions of the tempering process, the phase transition process of α nickel sulfide to β nickel sulfide does not have time to occur. The nickel sulfide inside the tempered glass exists in the state of α nickel sulfide, but the phase transition of α nickel sulfide to β nickel sulfide will also occur during use, accompanied by a volume expansion of 2% to 4%, which will cause the problem of stress concentration around the impurities. At the same time, the difference in the thermal expansion coefficient of nickel sulfide and silicon and the thermal expansion coefficient of glass will also cause stress concentration around the impurities.

[0180] In a possible embodiment, the glass quality detection device further includes: a counting unit, configured to count the glass that meets the explosion-proof level less than a set level.

[0181] In this embodiment, when it is detected that the explosion-proof level of the glass is lower than the set level, it means that the explosion-proof level of the glass is low, and the glass is prone to cracks, thereby easily causing self-explosion. When it is determined that the current explosion-proof level of the glass is low, the glass with an explosion-proof level lower than the set level is counted. When a glass with a low explosion-proof level is detected, a count is added, which is convenient for subsequent statistics of the number of such products in the mass-produced glass, so as to facilitate the determination of whether the production process needs to be adjusted according to the defective rate.

[0182] An embodiment of the present invention provides a glass quality detection device, comprising: a controller and a memory, wherein the memory stores a program or instruction, and the controller implements the steps of any of the above methods when executing the program or instruction in the memory. Therefore, the glass quality detection device provided in this embodiment has the beneficial effects of any of the above methods.

[0183] In a fourth aspect, the present invention provides a readable storage medium, on which a program or instruction is stored. When the program or instruction is executed by a processor, the steps of any of the above methods are implemented. Therefore, the readable storage medium provided in this embodiment has the beneficial effects of any of the above methods.

[0184] The present invention provides a detection device, including: a detection device for the quality of any of the above glasses; or a readable storage medium. Therefore, the detection device provided in this embodiment has the beneficial effects of the detection device for the quality of any of the above glasses, or has the beneficial effects of the above readable storage medium.

[0185] In the present invention, the term "a plurality of" refers to two or more, unless otherwise clearly defined. Terms such as "installed", "connected", "connected to", "fixed", etc. should be understood in a broad sense. For example, "connected" can be a fixed connection, a detachable connection, or an integral connection; "connected" can be a direct connection or an indirect connection through an intermediate medium. For those of ordinary skill in the art, the specific meanings of the above terms in the present invention can be understood according to specific circumstances.

[0186] In the description of this specification, the descriptions of terms such as "one embodiment", "some embodiments", "specific embodiments", etc. mean that the specific features, structures, materials, or characteristics described in connection with the embodiment or example are included in at least one embodiment or example of the present invention. In this specification, the schematic representations of the above terms do not necessarily refer to the same embodiment or instance. Moreover, the specific features, structures, materials, or characteristics described can be combined in a suitable manner in any one or more embodiments or examples.

[0187] The foregoing is only the preferred embodiment of the present invention and is not intended to limit the present invention. For those skilled in the art, the present invention can have various changes and modifications. Any modification, equivalent replacement, improvement, etc. made within the spirit and principle of the present invention shall be included within the protection scope of the present invention.

Claims

1. A method for detecting the quality of glass, characterized in that, including: During the process of heating the glass from the initial temperature to the softening temperature, obtaining the temperature change value of the impurities in the glass and the radius change value of the impurities; Determining the average stress value within a preset range of the position where the impurities are located according to the temperature change value of the impurities and the radius change value of the impurities; Determining the explosion-proof grade of the glass according to the average stress value and the preset strength value of the glass; The determining the average stress value within a preset range of the position where the impurities are located according to the temperature change value of the impurities and the radius change value of the impurities includes: Determining the intrinsic strain of the impurities according to the temperature change value of the impurities and the radius change value of the impurities; Determining the average stress value within a preset range of the position where the impurities are located according to the intrinsic strain; The determining the intrinsic strain of the impurities according to the temperature change value of the impurities and the radius change value of the impurities includes: Determining a first sub-intrinsic strain according to the temperature change value of the impurities; Determining a second sub-intrinsic strain according to the radius change value of the impurities; Determining the intrinsic strain of the impurities according to the first sub-intrinsic strain and the second sub-intrinsic strain; Wherein, the expansion coefficients of the impurities and the glass are different, causing the first sub-intrinsic strain, and the second sub-intrinsic strain is caused by the volume expansion of the impurities.

2. The method for detecting the quality of glass according to claim 1, wherein The determining the average stress value within a preset range of the position where the impurities are located according to the intrinsic strain includes: Determining a plurality of first stress values within a preset range of the position where the impurities are located according to the intrinsic strain; Determining the average stress value within a preset range of the position where the impurities are located in the glass according to the plurality of first stress values.

3. The method for detecting the quality of glass according to claim 2, wherein The determining a plurality of first stress values within a preset range of the position where the impurities are located according to the intrinsic strain includes: Determining the range of stress concentration caused by the impurities according to the intrinsic strain; Determining a plurality of second stress values within the range of stress concentration according to the range of stress concentration; Determining the preset range of the position where the impurities are located, and screening a plurality of the second stress values within the range of stress concentration to obtain the plurality of first stress values; Wherein, the preset range of the position where the impurities are located is within the range of stress concentration.

4. The method for detecting the quality of glass according to claim 3, wherein Before the determining a plurality of first stress values within a preset range of the position where the impurities are located according to the intrinsic strain, further including: Obtaining the stiffness matrix of the glass, the first coordinate value of any point in the glass, and the second coordinate value of any point on the surface of the impurities; The determining the range of stress concentration caused by the impurities according to the intrinsic strain includes: Determining the range of stress concentration caused by the impurities according to the intrinsic strain, the stiffness matrix, the first coordinate value and the second coordinate value.

5. The method for detecting the quality of glass according to any one of claims 1 to 4, wherein The preset range for determining the location of the impurities includes: Determining the preset range for the location of the impurities according to the fracture strength and fracture toughness of the glass.

6. The method for detecting the quality of glass according to any one of claims 1 to 4, characterized in that The determination of the explosion-proof grade of the glass according to the average stress value and the preset strength value of the glass includes: Based on the average stress value being greater than the preset strength value of the glass, determining that the explosion-proof grade of the glass is greater than or equal to the set grade; Based on the average stress value being less than the preset strength value of the glass, determining that the explosion-proof grade of the glass is less than the set grade.

7. The method for detecting the quality of glass according to claim 6, characterized in that, After determining that the explosion-proof of the glass is less than or equal to the set grade, it further includes: Outputting a prompt message.

8. The method for detecting the quality of glass according to claim 7, characterized in that The prompt message includes: sound information and / or light information.

9. The method for detecting the quality of glass according to claim 6, characterized in that The impurities include nickel sulfide impurities and elemental silicon impurities.

10. A glass quality detection device, characterized in that, It includes: An acquisition unit for acquiring the temperature change value and the radius change value of the impurities in the glass during the process of heating the glass from the initial temperature to the softening temperature; A first determination unit for determining the average stress value within the preset range of the location of the impurities according to the temperature change value and the radius change value of the impurities; A second determination unit for determining the explosion-proof grade of the glass according to the average stress value and the preset strength value of the glass; The first determination unit is specifically used for: determining the intrinsic strain of the impurities according to the temperature change value and the radius change value of the impurities; Determining the average stress value within the preset range of the location of the impurities according to the intrinsic strain; The first determination unit is further used for: determining a first sub-intrinsic strain according to the temperature change value of the impurities; Determining a second sub-intrinsic strain according to the radius change value of the impurities; Determining the intrinsic strain of the impurities according to the first sub-intrinsic strain and the second sub-intrinsic strain; Wherein, the different expansion coefficients of the impurities and the glass cause the first sub-intrinsic strain, and the second sub-intrinsic strain is caused by the volume expansion of the impurities.

11. A glass quality detection device, characterized in that, It includes: A controller and a memory, wherein a program or instruction is stored in the memory, and the controller realizes the steps of the method according to any one of claims 1 to 9 when executing the program or instruction in the memory.

12. A readable storage medium, characterized in that, The program or instruction is stored on the readable storage medium, and when the program or instruction is executed by a processor, the steps of the method according to any one of claims 1 to 9 are realized.

13. A detection device, characterized in that, It includes: The device for detecting the quality of glass according to claim 10 or 11; Or The readable storage medium according to claim 12.

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