CN210340688U - Chemical tempering equipment for ultrathin glass - Google Patents
Chemical tempering equipment for ultrathin glass Download PDFInfo
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- CN210340688U CN210340688U CN201921273290.1U CN201921273290U CN210340688U CN 210340688 U CN210340688 U CN 210340688U CN 201921273290 U CN201921273290 U CN 201921273290U CN 210340688 U CN210340688 U CN 210340688U
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Abstract
The utility model provides an ultra-thin glass chemical toughening equipment, the height of the bottom end of a microcrystalline glass piece arranged through the equipment is lower than the height of the top end of a tank frame, in the actual production process, the bottom end of the microcrystalline glass piece is immersed in molten salt liquid, the ultra-thin glass piece can be completely immersed in the molten salt liquid, the complete toughening of the ultra-thin glass piece is ensured, the chemical toughening is uniform, and the toughening performance and the yield of ultra-thin glass products are improved; moreover, the tank frame arranged in the equipment is made of stainless steel products, and the surface of the tank frame is made of Al2O3The spraying treatment is carried out to prevent the tank frame from being oxidized by the toughened molten salt, ensure the quality of the molten salt liquid and prevent the surface of the glass from being polluted by the coloring ions of the stainless steel bracket in the toughening processThe tempering effect is improved; in addition, the device has compact structure and reasonable design, can ensure the production of high-quality tempered ultrathin glass products, and is suitable for being popularized and used in the field of ultrathin glass.
Description
Technical Field
The utility model relates to an ultra-thin glass chemical tempering equipment belongs to glass production technical field.
Background
The ultra-thin plate glass generally refers to plate glass with the thickness less than 1mm, is mainly applied to the fields of observation windows, mobile phone screens, medical cover glass, glass slides, electronic displays and the like, can be divided into liquid crystal substrate glass, cover glass, touch screen glass and the like according to different purposes, and has the main production and preparation process methods of a float method, an overflow drawing method, a slit drawing method, a secondary drawing method and the like.
The chemically toughened glass is prepared by changing the chemical element composition on the surface of glass based on ion diffusion mechanism, i.e. generally adopting alkali metal ions (such as Na) with small radius on the surface layer of glass+]By alkali metal ions of larger radius in the molten salt [ e.g. K ]+And Cs+Etc. of]The replacement is carried out, so that a compressive stress layer with certain thickness is generated on the surface of the glass due to volume expansion, the stress expansion of cracks on the surface of the glass is prevented, and the performances of scratch resistance, mechanical strength and the like of the surface of the glass are improved.
At present, a support frame adopted in general chemical toughening is generally 0Cr18Ni9 stainless steel, and the support frame can be in direct contact with glass at high temperature, so that the defects of watermarks, water marks, rusts and the like can be generated during toughening, the toughening effect is influenced, and the requirements of high requirements and few defects of the glass can not be met.
Meanwhile, because the thickness of the ultrathin electronic glass is less than 1mm, the thickness of the thinnest ultrathin electronic glass at present is 0.05mm [50 μm ] or even thinner, when the ultrathin glass is subjected to chemical toughening, the ultrathin glass can float in molten salt under the combined action of the buoyancy and high temperature [ 350-460 ℃) of potassium nitrate mixed molten salt and long time of 0.5-10h, and part of the position of the ultrathin glass can float above the molten salt, so that the part of the upper part of the chemically toughened glass floating is not in contact with the potassium nitrate molten salt, and the chemical toughening is not uniform, so that the glass itself generates larger stress in the chemical toughening process to damage the glass, and the performance and yield of the ultrathin glass product are reduced.
The bracket in the salt tank is generally made of stainless steel during chemical toughening of ultrathin glass, and Al is carried out on the surface of the stainless steel bracket2O3The spraying treatment prevents the stainless steel support from being oxidized, thereby polluting chemical tempering molten salt and influencing the tempering effect.
SUMMERY OF THE UTILITY MODEL
The utility model aims at solving the problems, the bottom end of the microcrystalline glass piece arranged by the chemical tempering equipment is lower than the top end of the tank frame, in the actual production process, the bottom end of the microcrystalline glass piece is immersed in the molten salt solution, the ultra-thin glass piece can be completely immersed in the molten salt solution, the complete tempering of the ultra-thin glass piece is ensured, the chemical tempering is uniform, and the tempering performance and the yield of ultra-thin glass products are improved; moreover, the tank frame arranged in the equipment is made of stainless steel products, and the surface of the tank frame is made of Al2O3The spraying treatment is carried out, the oxidation of the tank frame by toughened molten salt is prevented, the quality of molten salt liquid is ensured, the pollution of the glass surface by coloring ions of a stainless steel bracket in the toughening process is prevented, and the toughening effect is improved; in addition, the device has compact structure and reasonable design, can ensure the production of high-quality tempered ultrathin glass products, and is suitable for being popularized and used in the field of ultrathin glass.
In order to achieve the above object, the present invention is achieved by the following technical means.
The utility model provides an ultra-thin glass chemical tempering equipment, includes tempering capping, tongs, microcrystalline glass spare, truss, the outer groove of chemical tempering, its characterized in that: the tempering capping is characterized in that grippers are arranged at two ends of the tempering capping, a boss is arranged at the lower end of the tempering capping, a plurality of microcrystalline glass pieces are arranged on the boss, and the tempering capping is arranged at the upper end of the chemical tempering outer tank.
Furthermore, a plurality of groove frames are arranged at the bottom in the chemical toughening outer groove.
Furthermore, the side edge of the boss is attached to the inner wall of the chemical tempering outer groove.
Further, the height of the top end of the groove frame is higher than that of the bottom end of the glass ceramic piece.
Furthermore, the microcrystalline glass piece is made of lithium-aluminum-silicon microcrystalline glass, is high in temperature resistance and small in expansion coefficient, cannot generate thermal deformation at the toughening temperature (380-430 ℃), and cannot generate chemical reaction with chemically toughened molten salt.
Furthermore, the tank frame is made of stainless steel products, and the surface of the tank frame is sprayed with Al2O3, so that the stainless steel bracket is prevented from being oxidized by toughened molten salt to pollute toughened glass, and the toughened glass is prevented from generating defects.
The utility model discloses mainly have following beneficial effect:
1. the microcrystalline glass spare bottom that this equipment set up highly is less than the tank bracket top height, and in the actual production process, microcrystalline glass spare bottom is soaked in the molten salt liquid, can with ultra-thin glass spare completely soak in the molten salt liquid, guaranteed the complete tempering of ultra-thin glass spare, and chemical tempering is even, has improved the performance and the yield of ultra-thin glass product tempering.
2. The tank frame arranged in the equipment is made of stainless steel products, and the surface of the tank frame is made of Al2O3The spraying treatment is carried out, the oxidation of the tank bracket by toughened molten salt is prevented, the quality of molten salt liquid is ensured, the pollution of the glass surface by the coloring ions of the stainless steel bracket in the toughening process is prevented, and the toughening effect is improved.
3. The device has compact structure and reasonable design, can ensure the production of high-quality tempered ultrathin glass products, and is suitable for being popularized and used in the field of ultrathin glass.
Drawings
Fig. 1 is a schematic side view of the ultra-thin glass chemical tempering device of the utility model.
Fig. 2 is a schematic sectional view of the ultra-thin glass chemical toughening device of the present invention.
Fig. 3 is a schematic top-view cross-sectional view of the ultra-thin glass chemical toughening apparatus of the present invention.
Description of the main element symbols:
1 tempering tank cover
2 tongs
3 microcrystalline glass piece
4 groove rack
5 chemical tempering outer tank
The invention will be described in further detail with reference to the following examples and the accompanying drawings:
Detailed Description
Examples
As shown in fig. 1-3, the ultra-thin glass chemical toughening equipment comprises a toughening groove cover 1, grippers 2, microcrystalline glass pieces 3, a groove frame 4 and a chemical toughening outer groove 5, wherein the grippers 2 are arranged at two ends of the toughening groove cover 1, a boss is arranged at the lower end of the toughening groove cover 1, a plurality of microcrystalline glass pieces 3 are arranged on the boss, and the toughening groove cover 1 is arranged at the upper end of the chemical toughening outer groove 5.
And a plurality of groove frames 4 are arranged at the bottom in the chemical toughening outer groove 5.
The side edge of the boss is attached to the inner wall of the chemical tempering outer groove 5.
The top end of the groove frame 4 is higher than the bottom end of the microcrystalline glass piece 3.
The microcrystalline glass piece 3 is made of lithium-aluminum-silicon microcrystalline glass, is high in temperature resistance and small in expansion coefficient, cannot generate thermal deformation at the toughening temperature (380-430 ℃) and cannot generate chemical reaction with chemically toughened molten salt.
The groove frame 4 is made of stainless steel products and adopts Al on the surface2O3And spraying treatment is carried out to prevent the stainless steel bracket from being oxidized by toughened molten salt, so that coloring ions contained in the bracket pollute toughened glass and the toughened glass has defects.
In the production process, mechanical devices are required to be hung at two ends of the handle 2, and the toughening groove cover 1 is taken out; then solid potassium nitrate, cesium nitrate, diatomite and alumina powder are mixed according to the mass percentage: [75-90]: 3: [3-18]: 4, adding the mixture into an outer tempering tank 5, and heating the outer chemical tempering tank 5 by a resistance wire heating system at the temperature of 380-430 ℃ to melt solid potassium nitrate and cesium nitrate of the outer chemical tempering tank 5 into a liquid state from a solid state, uniformly distributing diatomite and alumina powder in the molten salt, and completely melting the diatomite and the cesium nitrate into the liquid state from the solid state after 1.5-10 hours to form a uniform molten salt solution; meanwhile, the ultrathin glass piece is placed in a muffle furnace to be heated, after the preheating temperature reaches 400 ℃, the ultrathin glass piece is vertically placed between the tank frames 4 in the chemical toughening outer tank 5 through a special glass clamp, at the moment, the temperature of the ultrathin glass piece is close to that of molten salt liquid, and the ultrathin glass cannot be cracked due to small temperature difference; then, after the ultrathin glass piece is placed in the molten salt solution for 5-20 min, covering the toughening tank cover 1 on the chemical toughening outer tank 5 through a mechanical device, wherein the liquid level of the molten salt solution in the chemical toughening outer tank 5 is higher than the bottom level of the microcrystalline glass piece 3, namely the bottom of the microcrystalline glass piece 3 is immersed in the molten salt solution, the liquid level of the molten salt solution is lower than the top level of the tank frame 4, the ultrathin glass piece cannot continuously float upwards under the barrier action of the microcrystalline glass piece 3, the ultrathin glass piece is ensured to be completely immersed in the molten salt solution, and the ultrathin glass piece immersed in the molten salt solution is immersed and toughened at the temperature of 350-420 ℃ for 0.2-6 h; then hanging the glass piece on two ends of a handle 2 through a mechanical device, removing the toughening tank cover 1, floating the toughened ultrathin glass piece under the action of buoyancy, taking out the toughened ultrathin glass piece through a special glass clamp, placing the toughened ultrathin glass piece in a muffle furnace, cooling the toughened ultrathin glass piece, and cooling the toughened ultrathin glass piece from 420 ℃ to 20 ℃ at the room temperature at the cooling speed of 1-8 ℃/min; and finally, cleaning, drying, inspecting and packaging the tempered ultrathin glass piece cooled to the normal temperature, and leaving the factory.
In the actual production, when chemical toughening is carried out, the tank frame 4 in the chemical toughening outer tank 5 is generally made of stainless steel products when the ultrathin glass is chemically toughened, and Al is carried out on the surface of a stainless steel bracket2O3The spraying treatment prevents the stainless steel bracket from being oxidized, thereby polluting chemical tempering molten salt and influencing temperingAnd (5) effect.
Firstly taking out the toughening groove cover 1, hanging the toughening groove cover 1 at two ends of the hand grip 2 by adopting a mechanical device, taking out, then adding solid potassium nitrate, cesium nitrate, diatomite and alumina powder into the chemical toughening outer groove 5 according to a certain proportion, heating the chemical toughening outer groove 5 after adding, wherein the general heating temperature is 380-430 ℃, and at the moment, the internal KNO3、CsNO3The ultra-thin glass piece to be toughened is preheated to 400 ℃ and then put into an outer chemical toughening tank 5, the ultra-thin glass piece cannot be burst due to small temperature difference when the temperature of the ultra-thin glass piece is close to the temperature of molten salt, the toughening tank cover 1 is covered after the ultra-thin glass piece is put into the molten salt for 5-20 min, the microcrystalline glass piece 3 on the toughening tank cover 1 is below the liquid level of the molten salt, the lithium aluminum silicon microcrystalline glass is stable in chemical composition, high in temperature resistance, small in expansion coefficient, colorless and transparent, cannot chemically react with the molten salt and deform, and cannot be blocked by the microcrystalline glass piece 3 after the toughened ultra-thin glass piece floats upwards and continuously floats upwards after the temperature is 350-420 ℃, and the ultra-thin glass piece is taken out after being toughened for 0.2-6 h and then is cooled, and (3) cooling the glass from the tempering temperature of 350-420 ℃ to about 20 ℃ at the cooling speed of 1-8 ℃/min, and finally cleaning, drying, inspecting, packaging and leaving the finished product out of the factory.
TABLE 1
The technical parameters of the ultrathin glass are as follows: the length, width and thickness are respectively 60mm, 40mm and 0.2 mm. The chemical tempering molten salt comprises the following components in percentage by mass.
Table 1 toughened molten salt composition and toughening process parameters:
it can be seen that the utility model discloses a chemical tempering technology and equipment make ultra-thin glass have higher strength property, and higher glass yield is fit for the use as fields such as electronic glass, and machining performance is good simultaneously, but wide application.
It should be noted that: the above description is only the preferred embodiment of the present invention, and the scope of the present invention should not be limited once. Therefore, any modification, equivalent replacement, or improvement made within the spirit and principle of the present invention should be included in the protection scope of the present invention.
Claims (6)
1. The utility model provides an ultra-thin glass chemical tempering equipment, includes tempering capping (1), tongs (2), microcrystalline glass spare (3), truss (4), chemical tempering outer tank (5), its characterized in that: tempering capping (1) both ends are provided with tongs (2), tempering capping (1) lower extreme is provided with the boss, is provided with a plurality of microcrystalline glass spare (3) on the boss, chemical tempering outer vat (5) upper end is arranged in tempering capping (1).
2. The ultra-thin glass chemical tempering device according to claim 1, wherein: the bottom in the chemical tempering outer tank (5) is provided with a plurality of tank racks (4).
3. The ultra-thin glass chemical tempering device according to claim 1, wherein: the side edge of the boss is attached to the inner wall of the chemical tempering outer groove (5).
4. The ultra-thin glass chemical tempering device according to claim 2, wherein: the top end of the groove frame (4) is higher than the bottom end of the microcrystalline glass piece (3).
5. The ultra-thin glass chemical tempering device according to claim 1, wherein: the microcrystalline glass piece (3) is made of lithium-aluminum-silicon microcrystalline glass, is high in temperature resistance and small in expansion coefficient, cannot generate thermal deformation at the tempering temperature of 380-430 ℃, and cannot generate chemical reaction with chemically tempered molten salt.
6. The ultra-thin glass chemical tempering device according to claim 2, wherein: the groove frame (4) is made of stainless steel products and adopts Al on the surface2O3And (4) performing spraying treatment to prevent the stainless steel bracket from being oxidized by toughened molten salt, so that the toughened glass is polluted by coloring ions contained in the bracket.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201921273290.1U CN210340688U (en) | 2019-08-07 | 2019-08-07 | Chemical tempering equipment for ultrathin glass |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201921273290.1U CN210340688U (en) | 2019-08-07 | 2019-08-07 | Chemical tempering equipment for ultrathin glass |
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| CN210340688U true CN210340688U (en) | 2020-04-17 |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110436764A (en) * | 2019-08-07 | 2019-11-12 | 秦皇岛玻璃工业研究设计院有限公司 | A kind of ultra-thin glass chemical tempering equipment and toughening method |
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2019
- 2019-08-07 CN CN201921273290.1U patent/CN210340688U/en active Active
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110436764A (en) * | 2019-08-07 | 2019-11-12 | 秦皇岛玻璃工业研究设计院有限公司 | A kind of ultra-thin glass chemical tempering equipment and toughening method |
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