CN114907006A - Method for identifying homogenization of tempered glass - Google Patents
Method for identifying homogenization of tempered glass Download PDFInfo
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- CN114907006A CN114907006A CN202210416510.1A CN202210416510A CN114907006A CN 114907006 A CN114907006 A CN 114907006A CN 202210416510 A CN202210416510 A CN 202210416510A CN 114907006 A CN114907006 A CN 114907006A
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- C—CHEMISTRY; METALLURGY
- C03—GLASS; MINERAL OR SLAG WOOL
- C03B—MANUFACTURE, SHAPING, OR SUPPLEMENTARY PROCESSES
- C03B32/00—Thermal after-treatment of glass products not provided for in groups C03B19/00, C03B25/00 - C03B31/00 or C03B37/00, e.g. crystallisation, eliminating gas inclusions or other impurities; Hot-pressing vitrified, non-porous, shaped glass products
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- C—CHEMISTRY; METALLURGY
- C03—GLASS; MINERAL OR SLAG WOOL
- C03C—CHEMICAL COMPOSITION OF GLASSES, GLAZES OR VITREOUS ENAMELS; SURFACE TREATMENT OF GLASS; SURFACE TREATMENT OF FIBRES OR FILAMENTS MADE FROM GLASS, MINERALS OR SLAGS; JOINING GLASS TO GLASS OR OTHER MATERIALS
- C03C17/00—Surface treatment of glass, not in the form of fibres or filaments, by coating
- C03C17/006—Surface treatment of glass, not in the form of fibres or filaments, by coating with materials of composite character
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- C—CHEMISTRY; METALLURGY
- C03—GLASS; MINERAL OR SLAG WOOL
- C03C—CHEMICAL COMPOSITION OF GLASSES, GLAZES OR VITREOUS ENAMELS; SURFACE TREATMENT OF GLASS; SURFACE TREATMENT OF FIBRES OR FILAMENTS MADE FROM GLASS, MINERALS OR SLAGS; JOINING GLASS TO GLASS OR OTHER MATERIALS
- C03C2217/00—Coatings on glass
- C03C2217/20—Materials for coating a single layer on glass
- C03C2217/29—Mixtures
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- C—CHEMISTRY; METALLURGY
- C03—GLASS; MINERAL OR SLAG WOOL
- C03C—CHEMICAL COMPOSITION OF GLASSES, GLAZES OR VITREOUS ENAMELS; SURFACE TREATMENT OF GLASS; SURFACE TREATMENT OF FIBRES OR FILAMENTS MADE FROM GLASS, MINERALS OR SLAGS; JOINING GLASS TO GLASS OR OTHER MATERIALS
- C03C2217/00—Coatings on glass
- C03C2217/70—Properties of coatings
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- C—CHEMISTRY; METALLURGY
- C03—GLASS; MINERAL OR SLAG WOOL
- C03C—CHEMICAL COMPOSITION OF GLASSES, GLAZES OR VITREOUS ENAMELS; SURFACE TREATMENT OF GLASS; SURFACE TREATMENT OF FIBRES OR FILAMENTS MADE FROM GLASS, MINERALS OR SLAGS; JOINING GLASS TO GLASS OR OTHER MATERIALS
- C03C2218/00—Methods for coating glass
- C03C2218/10—Deposition methods
- C03C2218/11—Deposition methods from solutions or suspensions
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- C—CHEMISTRY; METALLURGY
- C03—GLASS; MINERAL OR SLAG WOOL
- C03C—CHEMICAL COMPOSITION OF GLASSES, GLAZES OR VITREOUS ENAMELS; SURFACE TREATMENT OF GLASS; SURFACE TREATMENT OF FIBRES OR FILAMENTS MADE FROM GLASS, MINERALS OR SLAGS; JOINING GLASS TO GLASS OR OTHER MATERIALS
- C03C2218/00—Methods for coating glass
- C03C2218/10—Deposition methods
- C03C2218/11—Deposition methods from solutions or suspensions
- C03C2218/119—Deposition methods from solutions or suspensions by printing
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- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02P—CLIMATE CHANGE MITIGATION TECHNOLOGIES IN THE PRODUCTION OR PROCESSING OF GOODS
- Y02P40/00—Technologies relating to the processing of minerals
- Y02P40/50—Glass production, e.g. reusing waste heat during processing or shaping
- Y02P40/57—Improving the yield, e-g- reduction of reject rates
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Abstract
The invention discloses a method for identifying homogenized tempered glass, and belongs to the field of glass quality safety evaluation. It includes: coating the sintered temperature indicating paint on the surface of toughened glass according to a preset pattern; the sintering temperature indicating coating comprises glass powder and a temperature indicating material, wherein the softening temperature of the glass powder is lower than the homogenizing heat preservation temperature, the melting point of the glass powder is higher than the highest homogenizing temperature, and the temperature indicating material is irreversibly changed into a first specific color when reaching the homogenizing heat preservation temperature of toughened glass; placing the toughened glass into a homogenizing furnace for homogenizing; and if the color of the predetermined pattern is the first specific color after homogenization, the shape of the predetermined pattern is not deformed, the glass powder in the predetermined pattern shows a softening history, and the bonding strength between the predetermined pattern and the toughened glass reaches the set strength, judging that the toughened glass is homogenized according to the requirements. The invention can simply and conveniently record the temperature-affected historical process of the toughened glass in the homogenizing furnace and conveniently identify whether the toughened glass is homogenized.
Description
Technical Field
The invention relates to the field of glass quality safety evaluation, in particular to a method for identifying the homogenization of toughened glass.
Background
The toughened glass has been widely applied in various fields such as buildings, automobiles and the like in China, which is the country with the most production and application of the toughened glass. The self-explosion of the toughened glass can not be completely stopped by the current glass production technology, and the self-explosion rate of the toughened glass after leaving a factory is about 0.1-1%. For the toughened glass installed on a high-rise building, fragments generated after the toughened glass is subjected to spontaneous explosion fall from high altitude, and serious potential safety hazards are generated to ground personnel and articles, so that the reduction of the spontaneous explosion rate of the toughened glass is one of the most concerned and urgently needed to be solved in the field of glass at present.
According to the prior art, homogenizing tempered glass is a method for effectively reducing the self-explosion rate of the tempered glass, and the part 4 of safety glass for buildings: the homogenizing toughened glass (GB 15763.4-2009) stipulates that the homogenizing process comprises a temperature rising stage, a heat preservation stage and a temperature reduction stage. The ramp-up phase starts at the ambient temperature to which all the glass is exposed and ends at the moment when the surface temperature of the last piece of glass reaches 280 ℃. The holding period starts at the moment when the surface temperature of all the glass reaches 280 ℃, and the holding time is at least 2 hours. Throughout the soaking stage, it should be ensured that the temperature of the glass surface is maintained at 290 ℃ (homogeneous soaking temperature), and throughout the homogenization stage the glass surface temperature should not exceed 320 ℃ (highest homogenization temperature). And when the temperature of the glass reaching 280 ℃ is finally kept for 2 hours, starting to enter a cooling stage, and reducing the temperature of the glass to be below 70 ℃ at the stage to finish the homogenization process. Through the technical treatment, the toughened glass with higher self-explosion risk can be detonated in a homogenizing furnace, so that the self-explosion rate is reduced to below 0.1 percent. In Europe, there is a standard that the homogeneous heat-insulating temperature in the heat-insulating stage of tempered glass is set to 260 ℃. Related laws and regulations in China also require that tempered glass applied in some fields must be subjected to homogenization treatment.
However, before and after the tempered glass is homogenized, the appearance and the performance of the glass do not change obviously, so that whether the tempered glass flowing into the market is homogenized or not is difficult to identify by people, a plurality of glass enterprises are made false, the non-homogenized tempered glass is applied to the market according to the homogenized tempered glass, the non-homogenized tempered glass still has a large spontaneous explosion rate, and great loss is brought to users and great hidden danger is brought to urban public safety.
Chinese patent document CN111626384A discloses a method for intelligently detecting whether tempered glass is homogeneous, in which a small hole is drilled at the corner or edge of a glass sheet, and the glass sheet is tempered; placing a chip with pre-input information or a recognizable two-dimensional code in the small hole, filling a gap between the chip or the two-dimensional code and the small hole with low-melting-point glass slurry, and completely covering the chip or the two-dimensional code; placing the toughened glass with the chip or the two-dimensional code and the low-melting-point glass slurry in the small hole into a homogenizing furnace for homogenization, and melting, cooling and solidifying the low-melting-point glass in the homogenizing process; and the chip or the two-dimension code is firmly implanted into the toughened glass. After the toughened glass is discharged from the furnace, a signal reading device can be adopted to read the chip or scan the content of the two-dimensional code so as to detect and identify whether the toughened glass is homogeneous or not, or trace the source of the homogeneous toughened glass.
The above method has the following defects: firstly, the operation procedure is complex, the glass needs to be punched, and the punching per se has adverse influence factors on the appearance and the strength of the glass; secondly, the high-temperature resistant chip has high price, difficult preparation, larger volume and difficult realization of large-scale application; thirdly, it is difficult to identify whether the tempered glass is homogenized under a specified temperature homogenization process curve.
Disclosure of Invention
In order to solve the technical problems, the invention provides a method for identifying the homogenization of the toughened glass, which can simply and conveniently record the temperature-affected historical process of the toughened glass in a homogenizing furnace, conveniently identify whether the toughened glass is homogenized, does not need to be punched, and has simple manufacture and low cost.
The technical scheme provided by the invention is as follows:
a method of identifying that tempered glass is homogeneous, the method comprising:
s11: coating the prepared sintered temperature indicating paint on the surface of toughened glass according to a preset pattern;
the sintering temperature indicating coating comprises glass powder and a temperature indicating material, wherein the softening temperature of the glass powder is lower than the homogeneous heat preservation temperature of the toughened glass, the melting point of the glass powder is higher than the highest homogeneous temperature of the toughened glass, and the temperature indicating material irreversibly changes into a first specific color when reaching the homogeneous heat preservation temperature of the toughened glass;
s12: placing the toughened glass with the preset pattern into a homogenizing furnace for homogenizing;
s13: after the homogenization treatment is finished, checking the shape, the color, the softening history state and the bonding strength between the preset pattern and the toughened glass;
and if the color of the preset pattern is the first specific color, the shape of the preset pattern is not deformed, the glass powder in the preset pattern shows the softening history, and the bonding strength between the preset pattern and the toughened glass reaches the set strength, judging that the toughened glass is homogenized according to the requirement.
Furthermore, the sintering temperature indicating coating also comprises an auxiliary material, wherein the auxiliary material comprises a solvent and an auxiliary agent, and organic matters in the auxiliary material can be completely volatilized after homogenization treatment.
Further, the homogenizing heat preservation temperature is 260 ℃, the softening temperature of the glass powder is 200-250 ℃, and the melting point is 340-360 ℃;
or the homogenizing heat preservation temperature is 290 ℃, the softening temperature of the glass powder is 220-280 ℃, and the melting point is 360-380 ℃.
Further, the temperature indicating material displays a second specific color when the temperature indicating material is smaller than the homogeneous minimum temperature limit value, the temperature indicating material irreversibly changes from the second specific color to a first specific color when reaching the homogeneous heat preservation temperature of the tempered glass, and the temperature indicating material irreversibly changes from the first specific color to a third specific color when exceeding the homogeneous maximum temperature of the tempered glass.
Further, if the predetermined pattern shows a glass phase, it is determined that the glass frit in the predetermined pattern shows a softening history.
A method of identifying that tempered glass is homogeneous, the method comprising:
s21: coating the prepared temperature indicating paint on the surface of toughened glass according to a first preset pattern;
the temperature indicating coating comprises a temperature indicating material, and the temperature indicating material irreversibly changes into a first specific color when reaching the homogeneous heat preservation temperature of the toughened glass;
s22: coating the prepared sintering coating on the surface of toughened glass according to a second preset pattern, and ensuring that the sintering coating completely or partially covers the temperature indicating coating;
the sintering coating comprises glass powder, the softening temperature of the glass powder is lower than the homogenizing heat preservation temperature of the toughened glass, and the melting point of the glass powder is higher than the highest homogenizing temperature of the toughened glass;
s23: placing the toughened glass with the first preset pattern and the second preset pattern into a homogenizing furnace for homogenizing;
s24: after the homogenization treatment is finished, checking the color of the first preset pattern, and checking the shape, the softening history state and the bonding strength between the second preset pattern and toughened glass;
and if the color of the first preset pattern is the first specific color, the shape of the second preset pattern is not deformed, the glass powder in the second preset pattern shows the softening history, and the bonding strength between the second preset pattern and the toughened glass reaches the set strength, judging that the toughened glass is homogenized according to the requirement.
Furthermore, both the sintering coating and the temperature indicating coating also comprise auxiliary materials, the auxiliary materials comprise a solvent and an auxiliary agent, and organic matters in the auxiliary materials can be completely volatilized after homogenization treatment.
Further, the homogenizing heat preservation temperature is 260 ℃, the softening temperature of the glass powder is 200-250 ℃, and the melting point is 340-360 ℃;
or the homogenizing heat preservation temperature is 290 ℃, the softening temperature of the glass powder is 220-280 ℃, and the melting point is 360-380 ℃.
Further, the temperature indicating material displays a second specific color when the temperature indicating material is smaller than the homogeneous minimum temperature limit value, the temperature indicating material irreversibly changes from the second specific color to a first specific color when reaching the homogeneous heat preservation temperature of the tempered glass, and the temperature indicating material irreversibly changes from the first specific color to a third specific color when exceeding the homogeneous maximum temperature of the tempered glass.
Further, if the predetermined pattern shows a glass phase, it is determined that the glass frit in the second predetermined pattern shows a softening history.
The invention has the following beneficial effects:
the invention prepares the sintering temperature indicating paint by the glass powder with specific softening temperature and melting point and the temperature indicating material with color change at specific temperature, the sintering temperature indicating paint is simply coated on the surface of the toughened glass and then homogenized, the sintering temperature indicating paint is sintered on the surface of the toughened glass and presents specific color after being subjected to heat treatment in the homogenizing process, the history process of the toughened glass subjected to temperature action in the homogenizing furnace can be simply and conveniently recorded, and whether the toughened glass is homogenized or not can be verified. The sintering temperature indicating paint is simple to prepare, is convenient to coat on the surface of toughened glass, and can coat marks on each piece of glass. In the subsequent use process of the toughened glass user, if doubts about which piece of toughened glass or batch of toughened glass is homogenized, the toughened glass can be identified by detecting and judging the related appearance and the property change of the coated preset pattern according to the method provided by the invention. By the method, each homogenized toughened glass can be identified, and non-homogenized toughened glass is prevented from flowing into the market, so that the safe application of the toughened glass is guaranteed.
Drawings
FIG. 1 is a schematic view of a sintered temperature indicating paint applied to a surface of tempered glass in a predetermined pattern;
fig. 2 is a schematic view showing that the temperature indicating paint is applied to the surface of the tempered glass in a first predetermined pattern and the sintering paint is applied to the surface of the tempered glass in a second predetermined pattern.
Detailed Description
To make the technical problems, technical solutions and advantages of the present invention more apparent, the following detailed description is given with reference to the accompanying drawings and specific embodiments.
Example 1:
the embodiment of the invention provides a method for identifying the homogenization of toughened glass, which comprises the following steps:
s11: the prepared sintered temperature indicating paint is applied to the surface of tempered glass 1 according to a predetermined pattern 2, as shown in fig. 1.
The sintered temperature indicating paint comprises glass powder and a temperature indicating material, and can also comprise auxiliary materials if necessary. The glass powder can be selected as low-melting-point glass powder, the softening temperature and the melting point of the glass powder are selected according to the homogeneous heat preservation temperature, the homogeneous maximum temperature and the like of the toughened glass, the softening temperature of the glass powder is required to be lower than the homogeneous heat preservation temperature (and closer to the homogeneous heat preservation temperature) of the toughened glass, and the melting point of the glass powder is higher than the homogeneous maximum temperature of the toughened glass. It is ensured that the glass frit can soften during homogenization but does not melt completely.
At present, the current international and domestic standards comprise the current standards of homogeneous heat preservation temperature of 260 ℃ for 2 hours and homogeneous heat preservation temperature of 290 ℃ for 2 hours. Aiming at the standard that the homogeneous heat preservation temperature is 260 ℃, the softening temperature of the glass powder can be 200-250 ℃, and the melting point can be 340-360 ℃. Aiming at the standard that the homogeneous heat preservation temperature is 290 ℃, the softening temperature of the glass powder can be selected to be 220-280 ℃, and the melting point can be selected to be 360-380 ℃. The low-melting-point glass powder can be softened at a given homogenizing heat preservation temperature and heat preservation time to generate a glass phase (but is not completely melted), and can be well bonded with the surface of the toughened glass 1 in a sintering mode after being cooled (the standard is that the falling-off phenomenon should not be generated in the continuous deep processing process after the toughened glass is homogenized).
The temperature indicating material generally adopts irreversible temperature indicating powder, can change into different colors under different temperature ranges, is irreversible, and has the efficacy of recording the temperature change in the homogenizing process according to the color change of the temperature indicating material. In the invention, the temperature indicating material is required to be irreversibly changed into a first specific color when reaching the homogeneous heat preservation temperature of the toughened glass, and whether the temperature in the homogenizing process reaches the required homogeneous heat preservation temperature can be identified according to the color change of the temperature indicating material.
Furthermore, the temperature indicating material can also have more color change characteristics, for example, the temperature indicating material can display a second specific color when the temperature indicating material is lower than the homogeneous minimum temperature limit value, the second specific color can be irreversibly changed into a first specific color when the temperature indicating material reaches the homogeneous heat preservation temperature of the tempered glass, and the first specific color can be irreversibly changed into a third specific color when the temperature indicating material exceeds the homogeneous maximum temperature of the tempered glass. Therefore, the color temperature change point of the temperature indicating material can cover the maximum and minimum temperature limit values of the homogenization temperature of the tempered glass, and the homogenization maximum or minimum temperature history in the homogenization process can be identified according to the color change of the temperature indicating material. In order to ensure the precision, the maximum deviation of the temperature indicating temperature of the temperature indicating material is required not to exceed plus or minus 50 ℃.
The function of the auxiliary material is to prepare the glass powder into a coating which is easy to coat or print on the surface of the toughened glass 1, and the auxiliary material generally comprises a solvent and an auxiliary agent part so as to improve the performance of the coating.
When the sintering temperature indicating paint is prepared, the glass powder, the auxiliary material and the temperature indicating material are combined together to prepare the sintering temperature indicating paint with homogeneous tempered glass capable of indicating temperature and sintering. During preparation, the components and the proportion of the auxiliary materials are reasonably designed so that the prepared coating has better viscosity, fluidity, stability and coating or printing performance, and organic substances in the auxiliary materials can be completely volatilized after sintering treatment in a homogenizing furnace. The added temperature indicating material can generate the change of a first specific color on a coating formed after sintering under the action of the set homogeneous heat preservation temperature, so that the temperature identification in the homogeneous process is facilitated.
After the sintered temperature indicating paint is prepared, the sintered temperature indicating paint is coated on the surface of the toughened glass 1 according to the preset pattern 2, the coated surface can be the surface where the end face of the toughened glass 1 is positioned, or the surface which is vertical to the end face, and the coated position is preferably the corner position of the surface. The coating mode can adopt direct coating, or adopt the forms of brushing, screen printing, spraying or stamping, etc. After coating, a predetermined pattern 2, for example various patterns or a special LOGO form, can be formed, and the pattern is not deformed after sintering and is easily recognized by the naked eye.
S12: and (3) placing the toughened glass 1 with the preset pattern 2 into a homogenizing furnace for homogenizing treatment.
The method is used for placing the tempered glass 1 coated with the sintered temperature indicating coating into a homogenizing furnace for homogenizing treatment, in the homogenizing process, glass powder is softened and sintered on the surface of the tempered glass 1, the temperature indicating material is changed into a first specific color after reaching the homogenizing heat preservation temperature of the tempered glass, so that a macroscopic predetermined pattern 2 with the first specific color is formed on the surface of the tempered glass 1, and the predetermined pattern 2 is fixedly connected to the surface of the tempered glass 1.
S13: after the homogenization treatment is finished, the shape, color, softening history state, and adhesion strength with the tempered glass 1 of the predetermined pattern 2 are checked.
If the color of the predetermined pattern 2 is the first specific color, the shape of the predetermined pattern 2 is not deformed, the glass powder in the predetermined pattern 2 shows a softening history, and the bonding strength between the predetermined pattern 2 and the tempered glass 1 reaches a set strength, it is determined that the tempered glass 1 has been homogenized as required.
The specific implementation process of this step may be as follows:
firstly, the color of the predetermined pattern solidified on the surface of the toughened glass 1 is checked, if the color change of the predetermined pattern 2 corresponds to the temperature indicating material affected by the homogeneous heat preservation temperature given by the homogeneous standard of the toughened glass (namely, the color change of the predetermined pattern 2 is a first specific color), the actual homogeneous heat preservation temperature of the toughened glass can be determined to be basically consistent with the temperature required by the standard, otherwise, the actual homogeneous heat preservation temperature can be determined to be not matched with the temperature required by the standard or the toughened glass 1 is not homogenized.
Subsequently, the shape, softening history, and other apparent states of the predetermined pattern 2 after sintering are checked for the tempered glass whose actual homogeneous insulation temperature is determined to be substantially the same as the temperature required by the standard.
If the shape of the predetermined pattern 2 is not deformed and the predetermined pattern 2 can show the obvious softening history of the glass powder, the glass powder is softened but not completely melted (the glass has certain fluidity after being completely melted, and the predetermined pattern 2 is deformed), the homogenizing temperature reaches the softening temperature of the glass powder, but does not exceed the melting point of the glass powder, and the actual homogenizing heat preservation temperature of the tempered glass can be determined to meet the requirement. When the softening history is judged, the judgment can be made by judging whether the glass phase appears, and if the predetermined pattern 2 shows obvious glass phase, the glass powder in the predetermined pattern 2 is judged to show the softening history.
If the bonding strength between the predetermined pattern 2 and the tempered glass 1 reaches a set strength, it can be considered that the holding time has reached the requirement.
If all the above conditions are met, the tempered glass can be judged to be homogenized according to the requirements, and an ideal homogenizing effect is achieved, otherwise, the ideal homogenizing effect is not achieved.
The invention prepares the sintering temperature indicating paint by the glass powder with specific softening temperature and melting point and the temperature indicating material with color change at specific temperature, the sintering temperature indicating paint is simply coated on the surface of the toughened glass 1 and then homogenized, the sintering temperature indicating paint is sintered on the surface of the toughened glass 1 after being subjected to heat treatment in the homogenizing process and presents specific color, the history process of the toughened glass subjected to temperature action in the homogenizing furnace can be simply and conveniently recorded, and whether the toughened glass is homogenized or not can be verified. The sintering temperature indicating paint is simple to prepare, is convenient to coat on the surface of the toughened glass 1, and can coat marks on each piece of glass. In the subsequent use process of the toughened glass user, if doubts about which piece of toughened glass or batch of toughened glass is homogenized, the toughened glass can be identified by detecting and judging the related appearance and the property change of the coated preset pattern according to the method provided by the invention. By the method, each homogenized toughened glass can be identified, and non-homogenized toughened glass is prevented from flowing into the market, so that the safe application of the toughened glass is guaranteed.
In order to prove the effect of the invention, the glass powder with the melting point of 350 DEG and the softening point of about 220 ℃ is selected, mineral oil and other auxiliary materials are mixed to form sticky paste, SC370 temperature indicating material produced by Shijiazhuanna Nalun chemical engineering limited company is added into the sticky paste to prepare the sintering temperature indicating coating, the temperature indicating material keeps green and does not change color below 200 ℃, the color of the temperature indicating material is changed from green to blue within the range of 200-315 ℃, and the temperature of the temperature indicating material is changed into white when the temperature of the temperature indicating material exceeds 315 ℃.
And printing the prepared sintering temperature indicating paint into a preset LOGO pattern on the surface of toughened glass by adopting a screen printing mode, and carrying out heat treatment in a homogenizing furnace along with the toughened glass, wherein the heat treatment temperature is 260 ℃, and the heat preservation time is 2 hours. After homogenization and removal from the furnace, the LOGO appearance was examined and found to be undeformed, blue in color, and the glass powder developed a glassy phase and consolidated on the glass surface. The tests show that the property change of the sintered temperature indicating coating accords with expectations after the sintered temperature indicating coating is homogenized, and the sintered temperature indicating coating has reliability and effectiveness in identifying the homogenized toughened glass.
Example 2:
the embodiment of the invention provides a method for identifying the homogenization of toughened glass, which comprises the following steps:
s21: the prepared temperature indicating paint is applied to the surface of the tempered glass 1 according to a first predetermined pattern 3, as shown in fig. 2.
The temperature indicating coating comprises a temperature indicating material, and the temperature indicating material irreversibly changes into a first specific color when reaching the homogeneous heat preservation temperature of the toughened glass.
S22: the prepared sintered paint is applied to the surface of the tempered glass 1 according to a second predetermined pattern 4 and is ensured to cover the temperature indicating paint completely or partially, as shown in fig. 2.
The sintering coating comprises glass powder, the softening temperature of the glass powder is lower than the homogenizing heat preservation temperature of the toughened glass, and the melting point of the glass powder is higher than the homogenizing highest temperature of the toughened glass.
This example differs from example 1 in that: example 1 a sintered temperature indicating coating is prepared by glass powder, a temperature indicating material and an auxiliary material (if any) and is coated on the surface of toughened glass 1; in the embodiment, the temperature indicating material and the auxiliary material (if any) are prepared into the temperature indicating paint, the glass powder and the auxiliary material (if any) are prepared into the sintering paint, and the temperature indicating paint and the sintering paint are respectively coated on the surface of the toughened glass 1.
Similar to the embodiment 1, when the homogeneous heat preservation temperature is 260 ℃, the softening temperature of the glass powder can be 200-250 ℃, and the melting point can be 340-360 ℃; when the homogenizing heat preservation temperature is 290 ℃, the softening temperature of the glass powder can be 220-280 ℃, and the melting point can be 360-380 ℃.
If necessary, both the sintering coating and the temperature indicating coating can also comprise auxiliary materials, similar to the embodiment 1, the auxiliary materials comprise solvents and auxiliary agents, and organic matters in the auxiliary materials can be completely volatilized after homogenization treatment.
For other characteristics of the glass powder, the temperature indicating material and the auxiliary material, reference is made to the description of embodiment 1, and details are not repeated in this embodiment.
The coating method of the temperature indicating paint and the sintering paint is also similar to that of the embodiment 1 during coating, and the description of the embodiment is omitted. However, in this embodiment, the sintering coating is required to cover the temperature indicating coating completely or partially, so that when the sintering coating is softened and then is solidified with the tempered glass 1, the temperature indicating material is solidified on the tempered glass 1, and the temperature indicating material is prevented from falling off subsequently.
In addition, the first predetermined pattern 3 and the second predetermined pattern 4 may be the same or different during coating, and may be flexibly selected according to actual needs.
S23: and placing the toughened glass 1 with the first preset pattern 3 and the second preset pattern 4 into a homogenizing furnace for homogenizing treatment.
This step is similar to S12 of embodiment 1, and is not described again in this embodiment.
S24: after the homogenization treatment is finished, the color of the first predetermined pattern 3 is checked, and the shape, the softening history state, and the bonding strength with the tempered glass 1 of the second predetermined pattern 4 are checked.
If the color of the first predetermined pattern 3 is a first specific color, the shape of the second predetermined pattern 4 is not deformed, the glass powder in the second predetermined pattern 4 shows a softening history, and the bonding strength between the second predetermined pattern 4 and the tempered glass 1 reaches a set strength, the tempered glass is judged to be homogenized according to the requirement.
This step differs from S13 of embodiment 1 only in that: the embodiment 1 checks the shape, color, softening history state and bonding strength with the tempered glass 1 of the same predetermined pattern, and the embodiment checks the color of the first predetermined pattern 3, the shape, softening history state and bonding strength with the tempered glass 1 of the second predetermined pattern 4. Other details of this step are the same as those in embodiment 1, and this embodiment is not described again.
The invention prepares the temperature indicating paint by the temperature indicating material with color change at specific temperature, prepares the sintering paint by the glass powder with specific softening temperature and melting point, simply coats the temperature indicating paint and the sintering paint on the surface of the toughened glass and then homogenizes the temperature indicating paint and the sintering paint, after the sintering paint and the temperature indicating paint are subjected to heat treatment in the homogenizing process, the temperature indicating paint and the sintering paint are sintered on the surface of the toughened glass and present specific colors, can simply and conveniently record the history process of the toughened glass subjected to temperature action in the homogenizing furnace, and verify whether the toughened glass is homogenized. The sintered paint and the temperature indicating paint are simple to prepare, and can be conveniently coated on the surface of toughened glass, and each piece of glass can be coated with a mark. In the subsequent use process of the toughened glass user, if doubts about which piece of toughened glass or batch of toughened glass is homogenized, the toughened glass can be identified by detecting and judging the related appearance and the property change of the coated pattern according to the method provided by the invention. By the method, each homogenized toughened glass can be identified, and non-homogenized toughened glass is prevented from flowing into the market, so that the safe application of the toughened glass is guaranteed.
While the foregoing is directed to the preferred embodiment of the present invention, it will be understood by those skilled in the art that various changes and modifications may be made without departing from the spirit and scope of the invention as defined in the appended claims.
Claims (10)
1. A method of identifying that tempered glass is homogeneous, the method comprising:
s11: coating the prepared sintered temperature indicating paint on the surface of toughened glass according to a preset pattern;
the sintering temperature indicating coating comprises glass powder and a temperature indicating material, wherein the softening temperature of the glass powder is lower than the homogeneous heat preservation temperature of the toughened glass, the melting point of the glass powder is higher than the highest homogeneous temperature of the toughened glass, and the temperature indicating material irreversibly changes into a first specific color when reaching the homogeneous heat preservation temperature of the toughened glass;
s12: placing the toughened glass with the preset pattern into a homogenizing furnace for homogenizing;
s13: after the homogenization treatment is finished, checking the shape, the color, the softening history state and the bonding strength between the preset pattern and the toughened glass;
and if the color of the preset pattern is the first specific color, the shape of the preset pattern is not deformed, the glass powder in the preset pattern shows a softening history, and the bonding strength between the preset pattern and the toughened glass reaches a set strength, judging that the toughened glass is homogenized according to the requirement.
2. The method for identifying the homogenization of the tempered glass as claimed in claim 1, wherein the sintered temperature indicating paint further comprises an auxiliary material, the auxiliary material comprises a solvent and an auxiliary agent, and organic matters in the auxiliary material can be completely volatilized after the homogenization treatment.
3. The method for identifying the homogenization of the tempered glass as claimed in claim 1 or 2, wherein the homogenization heat preservation temperature is 260 ℃, the softening temperature of the glass powder is 200-250 ℃, and the melting point is 340-360 ℃;
or the homogenizing heat preservation temperature is 290 ℃, the softening temperature of the glass powder is 220-280 ℃, and the melting point is 360-380 ℃.
4. The method for identifying the homogenization of tempered glass as claimed in claim 3, wherein the temperature indicating material displays a second specific color when the temperature is lower than the homogenization minimum temperature limit value, the temperature indicating material irreversibly changes from the second specific color to a first specific color when reaching the homogenization holding temperature of the tempered glass, and the temperature indicating material irreversibly changes from the first specific color to a third specific color when the highest homogenization temperature of the tempered glass is exceeded.
5. The method for identifying that tempered glass is homogeneous according to claim 4, wherein if the predetermined pattern shows a glass phase, it is determined that glass frit in the predetermined pattern shows a softening history.
6. A method of identifying that tempered glass is homogeneous, the method comprising:
s21: coating the prepared temperature indicating paint on the surface of toughened glass according to a first preset pattern;
the temperature indicating coating comprises a temperature indicating material, and the temperature indicating material irreversibly changes into a first specific color when reaching the homogeneous heat preservation temperature of the toughened glass;
s22: coating the prepared sintering coating on the surface of toughened glass according to a second preset pattern, and ensuring that the sintering coating completely or partially covers the temperature indicating coating;
the sintering coating comprises glass powder, the softening temperature of the glass powder is lower than the homogenizing heat preservation temperature of the toughened glass, and the melting point of the glass powder is higher than the homogenizing highest temperature of the toughened glass;
s23: placing the toughened glass with the first preset pattern and the second preset pattern into a homogenizing furnace for homogenizing;
s24: after the homogenization treatment is finished, checking the color of the first preset pattern, and checking the shape, the softening history state and the bonding strength between the second preset pattern and toughened glass;
and if the color of the first preset pattern is the first specific color, the shape of the second preset pattern is not deformed, the glass powder in the second preset pattern shows the softening history, and the bonding strength between the second preset pattern and the toughened glass reaches the set strength, judging that the toughened glass is homogenized according to the requirement.
7. The method for identifying the homogenization of the tempered glass as claimed in claim 6, wherein the sintering coating and the temperature indicating coating each further comprise an auxiliary material, the auxiliary material comprises a solvent and an auxiliary agent, and organic matters in the auxiliary material can be completely volatilized after the homogenization treatment.
8. The method for identifying the homogenization of the tempered glass as claimed in claim 6 or 7, wherein the homogenization heat preservation temperature is 260 ℃, the softening temperature of the glass powder is 200-250 ℃, and the melting point is 340-360 ℃;
or the homogenizing heat preservation temperature is 290 ℃, the softening temperature of the glass powder is 220-280 ℃, and the melting point of the glass powder is 360-380 ℃.
9. The method for identifying the homogenization of tempered glass as claimed in claim 8, wherein the temperature indicating material displays a second specific color when the temperature indicating material is less than a homogenization minimum temperature limit value, the temperature indicating material irreversibly changes from the second specific color to a first specific color when reaching a homogenization holding temperature of the tempered glass, and the temperature indicating material irreversibly changes from the first specific color to a third specific color when exceeding a homogenization maximum temperature of the tempered glass.
10. The method of claim 9, wherein if the predetermined pattern shows a glass phase, it is determined that the glass frit in the second predetermined pattern shows a softening history.
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| CN202210416510.1A CN114907006A (en) | 2022-04-20 | 2022-04-20 | Method for identifying homogenization of tempered glass |
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