CN110255924B - Curved glass temperature-changing tempering process - Google Patents
Curved glass temperature-changing tempering process Download PDFInfo
- Publication number
- CN110255924B CN110255924B CN201910565010.2A CN201910565010A CN110255924B CN 110255924 B CN110255924 B CN 110255924B CN 201910565010 A CN201910565010 A CN 201910565010A CN 110255924 B CN110255924 B CN 110255924B
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- China
- Prior art keywords
- temperature
- glass
- tempering
- polishing
- curved
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Expired - Fee Related
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- 239000011521 glass Substances 0.000 title claims abstract description 52
- 238000005496 tempering Methods 0.000 title claims abstract description 49
- 238000000034 method Methods 0.000 title claims abstract description 14
- 230000008569 process Effects 0.000 title claims abstract description 13
- 238000005498 polishing Methods 0.000 claims abstract description 21
- 238000004140 cleaning Methods 0.000 claims abstract description 15
- 238000013003 hot bending Methods 0.000 claims abstract description 15
- 239000000126 substance Substances 0.000 claims abstract description 8
- 238000005520 cutting process Methods 0.000 claims abstract description 4
- 238000012545 processing Methods 0.000 claims abstract description 4
- 238000003754 machining Methods 0.000 claims description 6
- 238000004506 ultrasonic cleaning Methods 0.000 claims description 3
- 238000000465 moulding Methods 0.000 abstract description 4
- 238000005342 ion exchange Methods 0.000 description 6
- 230000006872 improvement Effects 0.000 description 2
- 230000009286 beneficial effect Effects 0.000 description 1
- 238000011161 development Methods 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 238000004519 manufacturing process Methods 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 230000035699 permeability Effects 0.000 description 1
- 230000001681 protective effect Effects 0.000 description 1
- 238000005728 strengthening Methods 0.000 description 1
- 230000001360 synchronised effect Effects 0.000 description 1
- 238000012360 testing method Methods 0.000 description 1
Classifications
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B24—GRINDING; POLISHING
- B24B—MACHINES, DEVICES, OR PROCESSES FOR GRINDING OR POLISHING; DRESSING OR CONDITIONING OF ABRADING SURFACES; FEEDING OF GRINDING, POLISHING, OR LAPPING AGENTS
- B24B1/00—Processes of grinding or polishing; Use of auxiliary equipment in connection with such processes
-
- C—CHEMISTRY; METALLURGY
- C03—GLASS; MINERAL OR SLAG WOOL
- C03B—MANUFACTURE, SHAPING, OR SUPPLEMENTARY PROCESSES
- C03B23/00—Re-forming shaped glass
- C03B23/02—Re-forming glass sheets
- C03B23/023—Re-forming glass sheets by bending
-
- 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
- C03C21/00—Treatment of glass, not in the form of fibres or filaments, by diffusing ions or metals in the surface
Landscapes
- Chemical & Material Sciences (AREA)
- Engineering & Computer Science (AREA)
- Materials Engineering (AREA)
- Organic Chemistry (AREA)
- Mechanical Engineering (AREA)
- Life Sciences & Earth Sciences (AREA)
- Chemical Kinetics & Catalysis (AREA)
- General Chemical & Material Sciences (AREA)
- Geochemistry & Mineralogy (AREA)
- Re-Forming, After-Treatment, Cutting And Transporting Of Glass Products (AREA)
- Surface Treatment Of Glass (AREA)
Abstract
The invention relates to the technical field of curved glass tempering, in particular to a curved glass variable-temperature tempering process, which comprises the following steps: cutting, processing and cleaning the glass in sequence; carrying out hot bending on the cleaned glass to form a curved surface; polishing the curved surface after the hot bending forming, and cleaning the glass for the second time after polishing; carrying out chemical temperature-changing tempering on the glass; cleaning the glass subjected to variable-temperature tempering, inspecting a white sheet, and performing low-temperature tempering on the glass firstly by chemical variable-temperature tempering; performing high-temperature tempering after finishing low-temperature tempering; tempering the glass tempered at the high temperature at constant temperature; the invention uses low temperature tempering to temper the glass surface for molding initially, and then uses high temperature tempering to temper the product to a better stress depth, so that the flatness and the strength of the product reach the optimal state.
Description
Technical Field
The invention relates to the technical field of curved glass tempering, in particular to a curved glass variable-temperature tempering process.
Background
In the 5G era, the main trend of smart phone development is that with the progress of touch screen technology and the innovation of production process, the OLED screen will be more applied to the mobile phone due to its performance advantages. The popularization rate of the flexible curved screen mobile phone is higher and higher in the future, and therefore the demand for the glass curved screen is pulled. Meanwhile, the non-touch screen mobile phone still occupies a place in the market, and a curved glass protective screen is adopted in some high-end mobile phones to meet the requirement of high quality. In conclusion, the permeability of mobile phones adopting the glass curved screen in the mobile phone industry will be higher and higher in the future, and the window size of the glass curved screen will be gradually enlarged. The scale of the demand of the curved-surface screen of the mobile phone keeps synchronous with the market of the mobile phone and rapidly increases, and meanwhile, the market has higher and higher requirements on the curved-surface screen.
Disclosure of Invention
In order to solve the problems, the invention provides a variable temperature tempering process for curved glass, which primarily uses low temperature tempering to temper the surface of the glass for molding, and then uses high temperature tempering to temper the product to a better stress depth so as to enable the flatness and strength of the product to reach the best state.
The technical scheme adopted by the invention is as follows: a temperature-changing tempering process for curved glass comprises the following steps:
step 1, cutting, processing and cleaning glass in sequence;
step 2, carrying out hot bending on the cleaned glass to form a curved surface;
step 3, polishing the curved surface after the hot bending forming, and cleaning the glass for the second time after polishing;
step 4, performing chemical variable temperature tempering on the glass;
and 5, cleaning the glass subjected to variable-temperature tempering, and inspecting the white piece.
The scheme is further improved in that in the step 1, a large piece of glass is cut to a specified size, then is subjected to CNC machining to be subjected to finish machining, and then is subjected to ultrasonic cleaning.
The further improvement of the scheme is that in the step 2, in the hot bending forming curved surface, the hot bending temperature is 550-900 ℃, and the hot bending time is 25-100 min.
In the step 3, the curved surface is polished by a 3D polishing machine __, the polishing speed is 800-1200RPM, and the polishing time is 20-120 min; and cleaning by ultrasonic after finishing polishing.
The further improvement of the scheme is that in the step 4, the chemical temperature-changing tempering comprises the following steps:
step A, tempering the glass at low temperature; b, performing high-temperature tempering after finishing low-temperature tempering; and C, tempering the glass tempered at the high temperature at constant temperature.
The scheme is further improved in that the low-temperature toughening temperature is controlled to be 400 ℃, the high-temperature toughening temperature is controlled to be 440 ℃, and the constant-temperature toughening temperature is controlled to be 415 ℃.
The invention has the beneficial effects that:
adopting a variable temperature toughening process, firstly, carrying out a low temperature toughening stage: the product has low surface performance when not toughened, needs to be toughened at a relatively low temperature, has low toughening strength at the moment, has low ion exchange speed, does not increase the deformation of the product, has higher anti-deformation performance after a stress layer is formed on the surface of the product, and can be reinforced at a higher temperature; secondly, a high-temperature toughening stage: after the product is subjected to ion exchange for a period of time at a low temperature, a stress layer capable of protecting the deformation of the product is generated on the surface, and at the moment, the ion exchange is carried out at a high temperature, so that the stress depth of the product is deepened, and the compressive strength of the product is better.
In the invention, low-temperature tempering is primarily used to temper the surface of the glass for molding, and then high-temperature tempering is used to temper the product to a better stress depth, so that the flatness and the strength of the product reach the optimal state.
Detailed Description
The present invention will be further described below.
A temperature-changing tempering process for curved glass comprises the following steps:
step 1, cutting, processing and cleaning glass in sequence;
step 2, carrying out hot bending on the cleaned glass to form a curved surface;
step 3, polishing the curved surface after the hot bending forming, and cleaning the glass for the second time after polishing;
step 4, performing chemical variable temperature tempering on the glass;
and 5, cleaning the glass subjected to variable-temperature tempering, and inspecting the white piece.
In the step 1, a large piece of glass is cut to a specified size, then is subjected to CNC machining to be subjected to finish machining, and then is subjected to ultrasonic cleaning.
In the step 2, in the hot bending forming curved surface, the hot bending temperature is 550-.
In step 3, polishing the curved surface by a _3D polishing machine ___, wherein the polishing speed is 800-; and cleaning by ultrasonic after finishing polishing.
In the step 4, the chemical temperature-changing tempering comprises the following steps:
step A, tempering the glass at low temperature; b, performing high-temperature tempering after finishing low-temperature tempering; and C, tempering the glass tempered at the high temperature at constant temperature.
The low-temperature toughening temperature is controlled at 400 ℃, the high-temperature toughening temperature is controlled at 440 ℃, and the constant-temperature toughening temperature is controlled at 415 ℃.
Through tests:
the product strengthening effect is optimized by changing the temperature during toughening, utilizing initial low-temperature toughening, gradually increasing the high temperature, and mainly toughening at the increasing temperature of 400-440 ℃.
Adopting a variable temperature toughening process, firstly, carrying out a low temperature toughening stage: the product has low surface performance when not toughened, needs to be toughened at a relatively low temperature, has low toughening strength at the moment, has low ion exchange speed, does not increase the deformation of the product, has higher anti-deformation performance after a stress layer is formed on the surface of the product, and can be reinforced at a higher temperature; secondly, a high-temperature toughening stage: after the product is subjected to ion exchange for a period of time at a low temperature, a stress layer capable of protecting the deformation of the product is generated on the surface, and at the moment, the ion exchange is carried out at a high temperature, so that the stress depth of the product is deepened, and the compressive strength of the product is better.
In the invention, low-temperature tempering is primarily used to temper the surface of the glass for molding, and then high-temperature tempering is used to temper the product to a better stress depth, so that the flatness and the strength of the product reach the optimal state.
The above-mentioned embodiments only express several embodiments of the present invention, and the description thereof is more specific and detailed, but not construed as limiting the scope of the present invention. It should be noted that, for a person skilled in the art, several variations and modifications can be made without departing from the inventive concept, which falls within the scope of the present invention. Therefore, the protection scope of the present patent shall be subject to the appended claims.
Claims (4)
1. The variable-temperature tempering process for the curved-surface glass is characterized by comprising the following steps of: the method comprises the following steps:
step 1, cutting, processing and cleaning glass in sequence;
step 2, carrying out hot bending on the cleaned glass to form a curved surface;
step 3, polishing the curved surface after the hot bending forming, and cleaning the glass for the second time after polishing;
step 4, performing chemical variable temperature tempering on the glass;
step 5, cleaning the glass subjected to variable-temperature tempering, and inspecting a white sheet;
in the step 4, the chemical temperature-changing tempering comprises the following steps:
step A, tempering the glass at low temperature; b, performing high-temperature tempering after finishing low-temperature tempering; step C, tempering the glass tempered at the high temperature at constant temperature; the low-temperature toughening temperature is controlled to be 400 ℃, the high-temperature toughening temperature is controlled to be 440 ℃, and the constant-temperature toughening temperature is controlled to be 415 ℃.
2. The temperature-changing tempering process for curved glass according to claim 1, characterized in that: in the step 1, a large piece of glass is cut to a specified size, then is subjected to CNC machining to be subjected to finish machining, and is subjected to ultrasonic cleaning.
3. The temperature-changing tempering process for curved glass according to claim 1, characterized in that: in the step 2, in the hot bending forming curved surface, the hot bending temperature is 550-.
4. The temperature-changing tempering process for curved glass according to claim 1, characterized in that: in the step 3, polishing the curved surface by a 3D polishing machine, wherein the polishing speed is 800-1200RPM, and the polishing time is 20-120 min; and cleaning by ultrasonic after finishing polishing.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201910565010.2A CN110255924B (en) | 2019-06-27 | 2019-06-27 | Curved glass temperature-changing tempering process |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201910565010.2A CN110255924B (en) | 2019-06-27 | 2019-06-27 | Curved glass temperature-changing tempering process |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN110255924A CN110255924A (en) | 2019-09-20 |
| CN110255924B true CN110255924B (en) | 2021-10-08 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN201910565010.2A Expired - Fee Related CN110255924B (en) | 2019-06-27 | 2019-06-27 | Curved glass temperature-changing tempering process |
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| CN (1) | CN110255924B (en) |
Families Citing this family (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN111204992A (en) * | 2020-02-17 | 2020-05-29 | 广东星星精密玻璃科技有限公司 | Glass forming and strengthening process |
Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106045328A (en) * | 2016-05-27 | 2016-10-26 | 东莞市圆美精密电子有限公司 | Full-screen curved-plane evaporation mobile phone glass film and production process thereof |
| CN107986609A (en) * | 2017-12-04 | 2018-05-04 | 广东北玻电子玻璃有限公司 | The steel process method of display screen glass plate |
| CN108270885A (en) * | 2017-12-30 | 2018-07-10 | 文山科泰丰电子有限公司 | A kind of production method of mobile phone 3D glass cover-plates |
| CN108264245A (en) * | 2018-02-07 | 2018-07-10 | 意力(广州)电子科技有限公司 | Tempered glass and its preparation method and application |
| CN108747680A (en) * | 2018-05-21 | 2018-11-06 | 江西联创电子有限公司 | The polishing method of 3D glass |
| CN108793708A (en) * | 2018-08-06 | 2018-11-13 | 深圳市元虹光电科技有限公司 | A kind of processing method of curved surface mobile phone glass back shroud |
Family Cites Families (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2014224012A (en) * | 2013-05-16 | 2014-12-04 | 日本電気硝子株式会社 | Method for manufacturing strengthened glass and strengthened glass |
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2019
- 2019-06-27 CN CN201910565010.2A patent/CN110255924B/en not_active Expired - Fee Related
Patent Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106045328A (en) * | 2016-05-27 | 2016-10-26 | 东莞市圆美精密电子有限公司 | Full-screen curved-plane evaporation mobile phone glass film and production process thereof |
| CN107986609A (en) * | 2017-12-04 | 2018-05-04 | 广东北玻电子玻璃有限公司 | The steel process method of display screen glass plate |
| CN108270885A (en) * | 2017-12-30 | 2018-07-10 | 文山科泰丰电子有限公司 | A kind of production method of mobile phone 3D glass cover-plates |
| CN108264245A (en) * | 2018-02-07 | 2018-07-10 | 意力(广州)电子科技有限公司 | Tempered glass and its preparation method and application |
| CN108747680A (en) * | 2018-05-21 | 2018-11-06 | 江西联创电子有限公司 | The polishing method of 3D glass |
| CN108793708A (en) * | 2018-08-06 | 2018-11-13 | 深圳市元虹光电科技有限公司 | A kind of processing method of curved surface mobile phone glass back shroud |
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| CN110255924A (en) | 2019-09-20 |
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Granted publication date: 20211008 |