CN113698080A - Preparation process of high-strength toughened glass - Google Patents
Preparation process of high-strength toughened glass Download PDFInfo
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- CN113698080A CN113698080A CN202110166349.2A CN202110166349A CN113698080A CN 113698080 A CN113698080 A CN 113698080A CN 202110166349 A CN202110166349 A CN 202110166349A CN 113698080 A CN113698080 A CN 113698080A
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- 239000005341 toughened glass Substances 0.000 title claims abstract description 30
- 238000002360 preparation method Methods 0.000 title claims abstract description 11
- 239000011521 glass Substances 0.000 claims abstract description 112
- 238000010438 heat treatment Methods 0.000 claims abstract description 25
- 239000002994 raw material Substances 0.000 claims abstract description 24
- XEEYBQQBJWHFJM-UHFFFAOYSA-N Iron Chemical compound [Fe] XEEYBQQBJWHFJM-UHFFFAOYSA-N 0.000 claims abstract description 22
- 238000004519 manufacturing process Methods 0.000 claims abstract description 16
- 238000000034 method Methods 0.000 claims abstract description 16
- 229910052742 iron Inorganic materials 0.000 claims abstract description 11
- 239000000203 mixture Substances 0.000 claims abstract description 9
- 238000002156 mixing Methods 0.000 claims abstract description 8
- 238000001035 drying Methods 0.000 claims abstract description 7
- 238000002844 melting Methods 0.000 claims abstract description 7
- 230000008018 melting Effects 0.000 claims abstract description 7
- 235000019353 potassium silicate Nutrition 0.000 claims abstract description 7
- 238000003860 storage Methods 0.000 claims abstract description 6
- 238000007781 pre-processing Methods 0.000 claims abstract description 4
- 238000003756 stirring Methods 0.000 claims abstract description 4
- 239000010410 layer Substances 0.000 claims description 41
- 238000001816 cooling Methods 0.000 claims description 20
- 238000010791 quenching Methods 0.000 claims description 14
- 230000000171 quenching effect Effects 0.000 claims description 14
- 239000002344 surface layer Substances 0.000 claims description 9
- 238000001514 detection method Methods 0.000 claims description 6
- 238000004064 recycling Methods 0.000 claims description 6
- 238000005496 tempering Methods 0.000 claims description 6
- 238000007689 inspection Methods 0.000 claims description 4
- 238000000137 annealing Methods 0.000 claims description 3
- 238000007496 glass forming Methods 0.000 claims description 3
- 230000002401 inhibitory effect Effects 0.000 claims description 3
- 230000009286 beneficial effect Effects 0.000 description 1
- 230000005540 biological transmission Effects 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
Images
Classifications
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- C—CHEMISTRY; METALLURGY
- C03—GLASS; MINERAL OR SLAG WOOL
- C03B—MANUFACTURE, SHAPING, OR SUPPLEMENTARY PROCESSES
- C03B19/00—Other methods of shaping glass
- C03B19/02—Other methods of shaping glass by casting molten glass, e.g. injection moulding
-
- C—CHEMISTRY; METALLURGY
- C03—GLASS; MINERAL OR SLAG WOOL
- C03B—MANUFACTURE, SHAPING, OR SUPPLEMENTARY PROCESSES
- C03B27/00—Tempering or quenching glass products
- C03B27/012—Tempering or quenching glass products by heat treatment, e.g. for crystallisation; Heat treatment of glass products before tempering by cooling
-
- C—CHEMISTRY; METALLURGY
- C03—GLASS; MINERAL OR SLAG WOOL
- C03B—MANUFACTURE, SHAPING, OR SUPPLEMENTARY PROCESSES
- C03B27/00—Tempering or quenching glass products
- C03B27/04—Tempering or quenching glass products using gas
-
- C—CHEMISTRY; METALLURGY
- C03—GLASS; MINERAL OR SLAG WOOL
- C03B—MANUFACTURE, SHAPING, OR SUPPLEMENTARY PROCESSES
- C03B27/00—Tempering or quenching glass products
- C03B27/04—Tempering or quenching glass products using gas
- C03B27/0404—Nozzles, blow heads, blowing units or their arrangements, specially adapted for flat or bent glass sheets
Abstract
The invention discloses a preparation process of high-strength toughened glass, which specifically comprises the following steps: the method comprises the steps of preprocessing raw materials, crushing the raw materials for manufacturing the glass, drying the wet raw materials, removing iron from the iron-containing raw materials, mixing the raw materials, mixing and stirring the crushed, dried and iron-removed raw materials to obtain a glass mixture, melting the glass mixture, and putting the glass mixture into a crucible for high-temperature heating to form uniform bubble-free liquid glass. According to the preparation process of the high-strength toughened glass, the phenomenon that the temperature difference between the surface of the glass and the center of the glass is too large after the glass is directly heated and the glass is directly crushed in a heating furnace is effectively avoided, the yield of glass production is improved, loss is reduced, the surface temperature of the glass can be suddenly reduced, the phenomenon that the stress change is influenced when the surface temperature of the glass is too high due to constant-temperature storage and the heating is carried out is reduced, and the strength of the toughened glass is improved.
Description
Technical Field
The invention relates to the field of toughened glass preparation, in particular to a preparation process of high-strength toughened glass.
Background
Glass is a transparent object installed on the inner side of a door and a window by a user, is mainly used for light transmission and wind shielding, is generally installed on various automobiles and passenger cars, is toughened glass, is glass obtained by toughening ordinary glass, has higher strength than the ordinary glass, and belongs to the current mainstream glass;
however, the existing high-strength toughened glass preparation process has certain disadvantages to be improved, when common glass is toughened, the common glass at normal temperature is usually directly taken out for heating, at the moment, the temperature of the inner layer of the common glass is usually 10-20 ℃, and after the common glass is directly heated, the temperature difference between the surface of the glass and the center of the glass is too large, so that the phenomenon that the glass is directly broken in a heating furnace is caused.
Disclosure of Invention
The invention mainly aims to provide a preparation process of high-strength toughened glass, which can effectively solve the problems in the background technology that: the existing preparation process of high-strength toughened glass generally directly takes out and heats common glass at normal temperature when the common glass is toughened, the temperature of an inner layer of the common glass is generally between 10 and 20 ℃, and after the common glass is directly heated, the temperature difference between the surface of the common glass and the center of the common glass is too large, so that the common glass is directly broken in a heating furnace.
In order to achieve the purpose, the invention adopts the technical scheme that:
a preparation process of high-strength toughened glass specifically comprises the following steps:
the method comprises the following steps: preprocessing raw materials, namely crushing the raw materials for manufacturing glass, drying the wet raw materials, and removing iron from the iron-containing raw materials;
step two: mixing the raw materials, namely mixing and stirring the raw materials subjected to crushing, drying and iron removal to obtain a glass mixture;
step three: melting, namely putting the glass mixture into a crucible for high-temperature heating to form uniform bubble-free liquid glass;
step four: forming, namely placing liquid glass into a glass forming die, and carrying out annealing and quenching heat treatment procedures to obtain common glass;
step five: inspecting finished products, namely inspecting the molded common glass, reserving qualified products, and recycling unqualified products;
step six: storing at constant temperature, namely storing the qualified common glass in a constant-temperature environment;
step seven: tempering;
step eight: and (4) finished product detection, namely, carrying out finished product detection on the toughened glass, detecting qualified package and exporting, and recycling unqualified products.
As a further scheme of the present invention, in the seventh step, the specific treatment steps of tempering are as follows:
s1: air cooling, namely taking out the common glass sheet stored at constant temperature, and carrying out air cooling through a wind grate to reduce the surface temperature of the glass;
s2: preliminary heating, namely placing the glass in a greenhouse for preliminary preheating, wherein the outer layer of the glass begins to expand to generate compressive stress, and the central layer expands to generate tensile stress;
s3: heating, raising the temperature of the greenhouse, continuously heating the glass, reducing the temperature difference between the inner layer and the outer layer of the glass, and generating equal stress when the temperature difference between the inner layer and the outer layer is close;
s4: the glass is initially quenched, heated glass is blown by a wind grate, the surface temperature is reduced to be lower than the central temperature, the surface of the glass plate begins to shrink, the central layer does not shrink, the surface layer is subjected to tensile stress, and the central layer forms compressive stress;
s5: continuously quenching, continuously quenching the glass plate to harden the surface of the glass plate, stopping the shrinkage of the surface of the glass plate at the moment, continuously cooling and shrinking the inner layer, inhibiting the shrinkage of the inner layer by the hardened surface layer, generating compressive stress on the surface layer of the glass plate, and forming tensile stress on the inner layer;
s6: and (3) finishing quenching, wherein as the temperature of the inner layer of the glass plate is continuously reduced, the outer compressive stress and the tensile stress of the inner layer are basically formed, the inner and outer temperature difference is reduced, and the stress of the toughened glass is formed.
In a further embodiment of the present invention, in the third step, the temperature of melting is 1580 ℃.
In the fifth step, the finished product inspection comprises the inspection of cracks, straightness, transparency, bubbles and scratches of the common glass.
As a further scheme of the invention, in the sixth step, the constant-temperature storage temperature is 50-60 ℃.
As a further scheme of the invention, in the S1, the air cooling air temperature is 20-30 ℃, the air speed is 100-150m/S, and the air cooling time is 3-5S.
In a further embodiment of the present invention, in the step S3, the temperature is preferably raised to 620 ℃ and 640 ℃, and the temperature raising speed is 5-10 ℃/S.
In a further aspect of the present invention, in S5, the duration of the quenching is 30 to 40S.
Compared with the prior art, the invention has the following beneficial effects:
the common glass is stored at a constant temperature of 50-60 ℃ after the finished product is inspected, and is stored for not less than 6 hours, so that the surface temperature and the central temperature of the glass can be kept between 45-60 ℃, the phenomenon that the glass is directly crushed in a heating furnace due to overlarge temperature difference between the surface temperature and the central temperature of the glass after the glass is directly heated is effectively avoided, the qualified rate of glass production is improved, and the loss is reduced;
the air cooling with the air temperature of 20-30 ℃, the air speed of 100-150m/s and the air cooling time of 3-5s is carried out on the glass before the initial heating, so that the surface temperature of the glass can be suddenly reduced, the phenomenon that the stress change is influenced by the overhigh surface temperature of the glass due to constant-temperature storage is reduced, and the strength of the toughened glass is improved.
Drawings
FIG. 1 is a flow chart of a process for manufacturing a high-strength tempered glass according to the present invention.
Detailed Description
In order to make the technical means, the creation characteristics, the achievement purposes and the effects of the invention easy to understand, the invention is further described with the specific embodiments.
As shown in fig. 1, a process for preparing high-strength tempered glass specifically comprises the following steps:
the method comprises the following steps: preprocessing raw materials, namely crushing the raw materials for manufacturing glass, drying the wet raw materials, and removing iron from the iron-containing raw materials;
step two: mixing the raw materials, namely mixing and stirring the raw materials subjected to crushing, drying and iron removal to obtain a glass mixture;
step three: melting, namely putting the glass mixture into a crucible for high-temperature heating to form uniform bubble-free liquid glass;
step four: forming, namely placing liquid glass into a glass forming die, and carrying out annealing and quenching heat treatment procedures to obtain common glass;
step five: inspecting finished products, namely inspecting the molded common glass, reserving qualified products, and recycling unqualified products;
step six: storing at constant temperature, namely storing the qualified common glass in a constant-temperature environment;
step seven: tempering;
step eight: and (4) finished product detection, namely, carrying out finished product detection on the toughened glass, detecting qualified package and exporting, and recycling unqualified products.
In the seventh step, the concrete treatment steps of tempering are as follows:
s1: air cooling, namely taking out the common glass sheet stored at constant temperature, and carrying out air cooling through a wind grate to reduce the surface temperature of the glass;
s2: preliminary heating, namely placing the glass in a greenhouse for preliminary preheating, wherein the outer layer of the glass begins to expand to generate compressive stress, and the central layer expands to generate tensile stress;
s3: heating, raising the temperature of the greenhouse, continuously heating the glass, reducing the temperature difference between the inner layer and the outer layer of the glass, and generating equal stress when the temperature difference between the inner layer and the outer layer is close;
s4: the glass is initially quenched, heated glass is blown by a wind grate, the surface temperature is reduced to be lower than the central temperature, the surface of the glass plate begins to shrink, the central layer does not shrink, the surface layer is subjected to tensile stress, and the central layer forms compressive stress;
s5: continuously quenching, continuously quenching the glass plate to harden the surface of the glass plate, stopping the shrinkage of the surface of the glass plate at the moment, continuously cooling and shrinking the inner layer, inhibiting the shrinkage of the inner layer by the hardened surface layer, generating compressive stress on the surface layer of the glass plate, and forming tensile stress on the inner layer;
s6: and (3) finishing quenching, wherein as the temperature of the inner layer of the glass plate is continuously reduced, the outer compressive stress and the tensile stress of the inner layer are basically formed, the inner and outer temperature difference is reduced, and the stress of the toughened glass is formed.
In the third step, the melting temperature is 1580 ℃.
And step five, inspecting finished products, namely inspecting cracks, flatness, transparency, bubbles and scratches of the common glass.
In the sixth step, the constant-temperature storage temperature is 50-60 ℃.
In S1, the air cooling temperature is 20-30 ℃, the air speed is 100-150m/S, and the air cooling time is 3-5S.
In S3, the temperature is preferably raised to 620 ℃ and 640 ℃, and the temperature raising speed is 5-10 ℃/S.
In S5, the duration of the quenching is 30-40S.
According to the invention, after the finished product of the common glass is inspected, the common glass is stored at a constant temperature of 50-60 ℃ for not less than 6 hours, so that the surface temperature and the central temperature of the glass can be kept between 45-60 ℃, the phenomenon that the temperature difference between the surface temperature and the central temperature of the glass is too large after the glass is directly heated, the glass is directly crushed in a heating furnace is effectively avoided, the qualified rate of glass production is improved, and the loss is reduced; the air cooling with the air temperature of 20-30 ℃, the air speed of 100-150m/s and the air cooling time of 3-5s is carried out on the glass before the initial heating, so that the surface temperature of the glass can be suddenly reduced, the phenomenon that the stress change is influenced by the overhigh surface temperature of the glass due to constant-temperature storage is reduced, and the strength of the toughened glass is improved.
The foregoing shows and describes the general principles and broad features of the present invention and advantages thereof. It will be understood by those skilled in the art that the present invention is not limited to the embodiments described above, which are described in the specification and illustrated only to illustrate the principle of the present invention, but that various changes and modifications may be made therein without departing from the spirit and scope of the present invention, which fall within the scope of the invention as claimed. The scope of the invention is defined by the appended claims and equivalents thereof.
Claims (8)
1. A preparation process of high-strength toughened glass is characterized by comprising the following steps: the process specifically comprises the following steps:
the method comprises the following steps: preprocessing raw materials, namely crushing the raw materials for manufacturing glass, drying the wet raw materials, and removing iron from the iron-containing raw materials;
step two: mixing the raw materials, namely mixing and stirring the raw materials subjected to crushing, drying and iron removal to obtain a glass mixture;
step three: melting, namely putting the glass mixture into a crucible for high-temperature heating to form uniform bubble-free liquid glass;
step four: forming, namely placing liquid glass into a glass forming die, and carrying out annealing and quenching heat treatment procedures to obtain common glass;
step five: inspecting finished products, namely inspecting the molded common glass, reserving qualified products, and recycling unqualified products;
step six: storing at constant temperature, namely storing the qualified common glass in a constant-temperature environment;
step seven: tempering;
step eight: and (4) finished product detection, namely, carrying out finished product detection on the toughened glass, detecting qualified package and exporting, and recycling unqualified products.
2. The process for preparing high-strength tempered glass according to claim 1, wherein the process comprises the following steps: in the seventh step, the concrete treatment steps of tempering are as follows:
s1: air cooling, namely taking out the common glass sheet stored at constant temperature, and carrying out air cooling through a wind grate to reduce the surface temperature of the glass;
s2: preliminary heating, namely placing the glass in a greenhouse for preliminary preheating, wherein the outer layer of the glass begins to expand to generate compressive stress, and the central layer expands to generate tensile stress;
s3: heating, raising the temperature of the greenhouse, continuously heating the glass, reducing the temperature difference between the inner layer and the outer layer of the glass, and generating equal stress when the temperature difference between the inner layer and the outer layer is close;
s4: the glass is initially quenched, heated glass is blown by a wind grate, the surface temperature is reduced to be lower than the central temperature, the surface of the glass plate begins to shrink, the central layer does not shrink, the surface layer is subjected to tensile stress, and the central layer forms compressive stress;
s5: continuously quenching, continuously quenching the glass plate to harden the surface of the glass plate, stopping the shrinkage of the surface of the glass plate at the moment, continuously cooling and shrinking the inner layer, inhibiting the shrinkage of the inner layer by the hardened surface layer, generating compressive stress on the surface layer of the glass plate, and forming tensile stress on the inner layer;
s6: and (3) finishing quenching, wherein as the temperature of the inner layer of the glass plate is continuously reduced, the outer compressive stress and the tensile stress of the inner layer are basically formed, the inner and outer temperature difference is reduced, and the stress of the toughened glass is formed.
3. The process for preparing high-strength tempered glass according to claim 1, wherein the process comprises the following steps: in the third step, the melting temperature is 1580 ℃.
4. The process for preparing high-strength tempered glass according to claim 1, wherein the process comprises the following steps: and in the fifth step, the finished product inspection comprises the inspection of cracks, straightness, transparency, bubbles and scratches of the common glass.
5. The process for preparing high-strength tempered glass according to claim 1, wherein the process comprises the following steps: in the sixth step, the constant-temperature storage temperature is 50-60 ℃.
6. The process for preparing high-strength tempered glass according to claim 2, wherein the process comprises the following steps: in the S1, the air cooling temperature is 20-30 ℃, the air speed is 100-150m/S, and the air cooling time is 3-5S.
7. The process for preparing high-strength tempered glass according to claim 2, wherein the process comprises the following steps: in S3, the temperature is preferably raised to 620 ℃ and 640 ℃, and the temperature raising speed is 5-10 ℃/S.
8. The process for preparing high-strength tempered glass according to claim 2, wherein the process comprises the following steps: in S5, the duration of the sudden cooling is 30-40S.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202110166349.2A CN113698080A (en) | 2021-02-04 | 2021-02-04 | Preparation process of high-strength toughened glass |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202110166349.2A CN113698080A (en) | 2021-02-04 | 2021-02-04 | Preparation process of high-strength toughened glass |
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| CN113698080A true CN113698080A (en) | 2021-11-26 |
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| CN202110166349.2A Pending CN113698080A (en) | 2021-02-04 | 2021-02-04 | Preparation process of high-strength toughened glass |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN114436517A (en) * | 2022-03-19 | 2022-05-06 | 东莞市柏维光学科技有限公司 | Processing technology of glass panel |
Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US5236488A (en) * | 1990-07-04 | 1993-08-17 | Tamglass Oy | Method and apparatus for heat-strengthening glass sheets |
| CN104355530A (en) * | 2014-09-03 | 2015-02-18 | 宁波市合鑫玻璃科技有限公司 | Production process for flat tempered glass |
| CN107902896A (en) * | 2017-12-16 | 2018-04-13 | 常熟市赛蒂镶嵌玻璃制品有限公司 | The preparation process of new tempered glass |
| CN108585485A (en) * | 2018-07-06 | 2018-09-28 | 浙江向往玻璃科技有限公司 | A kind of technique for the production of High-strength compression resistant tempered glass |
| CN108585456A (en) * | 2018-07-06 | 2018-09-28 | 浙江向往玻璃科技有限公司 | A kind of high-strength armoured technique of heat resistant glass |
| CN110526561A (en) * | 2019-08-27 | 2019-12-03 | 宿州市天艺钢化玻璃有限公司 | A kind of production technology of tempered glass |
-
2021
- 2021-02-04 CN CN202110166349.2A patent/CN113698080A/en active Pending
Patent Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US5236488A (en) * | 1990-07-04 | 1993-08-17 | Tamglass Oy | Method and apparatus for heat-strengthening glass sheets |
| CN104355530A (en) * | 2014-09-03 | 2015-02-18 | 宁波市合鑫玻璃科技有限公司 | Production process for flat tempered glass |
| CN107902896A (en) * | 2017-12-16 | 2018-04-13 | 常熟市赛蒂镶嵌玻璃制品有限公司 | The preparation process of new tempered glass |
| CN108585485A (en) * | 2018-07-06 | 2018-09-28 | 浙江向往玻璃科技有限公司 | A kind of technique for the production of High-strength compression resistant tempered glass |
| CN108585456A (en) * | 2018-07-06 | 2018-09-28 | 浙江向往玻璃科技有限公司 | A kind of high-strength armoured technique of heat resistant glass |
| CN110526561A (en) * | 2019-08-27 | 2019-12-03 | 宿州市天艺钢化玻璃有限公司 | A kind of production technology of tempered glass |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN114436517A (en) * | 2022-03-19 | 2022-05-06 | 东莞市柏维光学科技有限公司 | Processing technology of glass panel |
| CN114436517B (en) * | 2022-03-19 | 2024-03-26 | 东莞市柏维光学科技有限公司 | Processing technology of glass panel |
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Application publication date: 20211126 |
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