CN107473574A - A kind of preparation method of curved glass panel - Google Patents
A kind of preparation method of curved glass panel Download PDFInfo
- Publication number
- CN107473574A CN107473574A CN201710865090.4A CN201710865090A CN107473574A CN 107473574 A CN107473574 A CN 107473574A CN 201710865090 A CN201710865090 A CN 201710865090A CN 107473574 A CN107473574 A CN 107473574A
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- CN
- China
- Prior art keywords
- glass panel
- glass
- preparation
- mould
- curved glass
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- 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.)
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Classifications
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- 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
- C03B23/03—Re-forming glass sheets by bending by press-bending between shaping moulds
-
- 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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- Chemical & Material Sciences (AREA)
- Engineering & Computer Science (AREA)
- Materials Engineering (AREA)
- Organic Chemistry (AREA)
- Re-Forming, After-Treatment, Cutting And Transporting Of Glass Products (AREA)
Abstract
The invention discloses a kind of preparation method of curved glass panel, including panel to be prepared, and glass is cut by design size, after being ground, polishing, carves milling into default size；The glass surface spraying protective layer after milling will be carved, loaded in mould after protective layer drying；The shaping of curved glass panel; mould is fixed in hot bending special atmosphere oven; three sections are divided to be heated to being processed Glass Transition; and pressure is applied to molding die surface; protective layer is set to penetrate into the glass basis after softening; it is molded under pressure according to mold shape, the curved glass panel is obtained after finally cooling down.There is preparation method of the present invention technique to be simple and convenient to operate, high yield rate; the design requirement of curved glass panel can be fully met; scale industrial production can be achieved, the production cost of product is effectively reduced, suitable for for preparing the electronic products such as various forms of mobile phones or tablet personal computer.
Description
Technical field
The present invention relates to glass making techniques field, specifically a kind of preparation method of curved glass panel.
Background technology
The main competitive focal points of electronic product such as conventional mobile phone, tablet personal computer are in the size of screen and the specification of semiconductor.But
Electronic product is developed so far, and starts to lack unique sex differernce that consumer can be attracted to buy.Traditional mobile phone faceplate, flat board electricity
Brain is typically flat glass, but this single pattern can not meet people's fashion-orientation and Individualized Pursuit now.So
And the specification of electronic product is similar, mainly still need to material improvement so as to realize different shape designs.General electricity
The material of the shell of sub- product is mainly plastics or metal.But plastic heat radiation is bad, environmental pollution is serious, is easily had
The erosion of solvent, the shortcomings of yellowing phenomenon, signal shielding or decay occur under ultraviolet, be not suitable for trend of the market.Make
It can be good at solving above mentioned problem existing for plastic casing and metal shell with glass shell, yet with Glass breadks easily and bullet
Property is limited, limits its application, is nearly all planar design, if being designed to curved surface, the internal stress in bending place is big, pressure resistance
Spend low, micro-crack easily occur in bending place.
The content of the invention
The technical problem to be solved in the present invention is for problem present in background technology, there is provided a kind of technique is simple, behaviour
Make convenient, the curved glass panel molding method for preparing of high yield rate, to overcome prior art glass in glass heat forming process
The problem of glass sticking to mould, production efficiency is effectively improved, to reduce glass scrappage, reduce production cost, specifically a koji
The preparation method of surface glass panel.
In order to solve the above technical problems, the technical solution adopted in the present invention is：A kind of preparation side of curved glass panel
Method, the preparation method comprise the following steps：
(1) preparation of flat glass panel, glass is cut by design size, after being ground, polishing, carves milling into default size；
(2) the glass surface spraying protective layer after milling will be carved, loaded in mould after protective layer drying；
(3) shaping of curved glass panel, mould is fixed in hot bending special atmosphere oven, opens hot bending protective atmosphere
Stove, three sections are divided to be heated to being processed Glass Transition, and the molding die surface being opposite in hot bending special atmosphere oven applies pressure,
Protective layer is penetrated into the glass basis after softening, glass is molded according to mold shape under pressure, finally control
Speed of furnace cooling makes glass cool to room temperature with the furnace, obtains the curved glass panel；Adding wherein in hot bending special atmosphere oven
Thermal process condition is：First paragraph is heated to 590~610 DEG C with 10~15 DEG C/min of heating rate, is incubated 15~18 minutes；
Make the Glass Transition in loading mould；Second segment is heated to 670~685 DEG C with 20~25 DEG C/min of heating rate, protects
Temperature 12~15 minutes, and the molding die surface being opposite in hot bending special atmosphere oven applies 150~180 grams/cm
Pressure；3rd section is heated to 725~735 DEG C with 28~32 DEG C/min of heating rate, is incubated 8~10 minutes.
Further, the preparation method of a kind of curved glass panel of the present invention, wherein the stove in the step (3)
Speed of cooling, control as between 30~35 DEG C/min, the protective gas wherein in hot bending special atmosphere oven is nitrogen, nitrogen plus
Enter amount to reach in stove oxygen content≤0.15% for standard.
Further, the preparation method of a kind of curved glass panel of the present invention, wherein being molded in the step (3)
Mould is made up of cavity plate, punch-pin two parts, wherein the bending of the radian of cavity plate and punch internal cavity and the curved glass panel of design
Radian is consistent, and the mould is prepared using graphite material or ceramic material.
Using a kind of preparation method of curved glass panel of the present invention, compared with prior art, its advantage
For：Mold materials are used as from graphite or ceramics, the frictional behaviour between glass and mould contact surface can be improved, are led to simultaneously
The glass surface spraying protective layer crossed after milling is carved, load in mould after drying, make to be added using three sections of mode of heatings
The softening of work glass, by applying certain rock deformation pressure, the thermal deformation in glass softening point temperature below is realized, using nitrogen
Gas controls oxygen content≤0.15% in stove, can reach the surface smoothness for being similar to minute surface as protective atmosphere.Using nitrogen
As protective atmosphere, it can not only ensure that mold materials are not oxidized after high temperature repeatedly, also effectively protection die surface is bright and clean
Degree will not change, and then be improved glass surface finishes.Preparation method of the present invention has that technique is simple, behaviour
Make convenient, high yield rate, to overcome prior art in glass heat forming process the problem of glass sticking to mould, effectively improve production effect
Rate, the design requirement of curved glass panel can be fully met, scale industrial production can be achieved, effectively reduce being produced into for product
This, suitable for for preparing the electronic products such as various forms of mobile phones or tablet personal computer.
Embodiment
In order to more fully explain the implementation of the present invention, the present invention is further illustrated below in conjunction with specific embodiment.Institute
Give an actual example and be served only for explaining the present invention, rather than limit the scope of the present invention.
Embodiment 1
A kind of preparation method of curved glass panel, the preparation method comprise the following steps：
(1) preparation of flat glass panel, glass is cut by design size, after being ground, polishing, carves milling into default size.
(2) the glass surface spraying protective layer after milling will be carved, loaded in mould after protective layer drying；It is wherein described
Mould is made up of cavity plate, punch-pin two parts, wherein the radian of cavity plate and punch internal cavity and the curved glass panel of design
Crooked radian is consistent, and the mould is prepared using graphite material.
(3) shaping of curved glass panel, mould is fixed in hot bending special atmosphere oven, opens hot bending protection gas
Atmosphere stove, three sections are divided to be heated to being processed Glass Transition, and the molding die surface being opposite in hot bending special atmosphere oven applies pressure
Power, protective layer is penetrated into the glass basis after softening, glass is molded according to mold shape under pressure, finally control
Speed of furnace cooling processed makes glass cool to room temperature with the furnace, obtains the curved glass panel；Wherein in hot bending special atmosphere oven
Heating process conditions is：First paragraph is heated to 590 DEG C with 10 DEG C/min of heating rate, is incubated 15 minutes；Make loading shaping mould
Glass Transition in tool；Second segment is heated to 670 DEG C with 20 DEG C/min of heating rate, is incubated 12 minutes, and be opposite to hot bending
Molding die surface in special atmosphere oven applies 150 grams/cm of pressure；3rd section with 28 DEG C/min of heating speed
Rate is heated to 725 DEG C, is incubated 8 minutes.Wherein speed of furnace cooling control is 30 DEG C/min, while the guarantor in hot bending special atmosphere oven
Shield gas is nitrogen, and the addition of nitrogen is to reach in stove oxygen content≤0.15% for standard.
Embodiment 2
A kind of preparation method of curved glass panel, the preparation method comprise the following steps：
(1) preparation of flat glass panel, glass is cut by design size, after being ground, polishing, carves milling into default size.
(2) the glass surface spraying protective layer after milling will be carved, loaded in mould after protective layer drying；It is wherein described
Mould is made up of cavity plate, punch-pin two parts, wherein the radian of cavity plate and punch internal cavity and the curved glass panel of design
Crooked radian is consistent, and the mould is prepared using ceramic material.
(3) shaping of curved glass panel, mould is fixed in hot bending special atmosphere oven, opens hot bending protection gas
Atmosphere stove, three sections are divided to be heated to being processed Glass Transition, and the molding die surface being opposite in hot bending special atmosphere oven applies pressure
Power, protective layer is penetrated into the glass basis after softening, glass is molded according to mold shape under pressure, finally control
Speed of furnace cooling processed makes glass cool to room temperature with the furnace, obtains the curved glass panel；Wherein in hot bending special atmosphere oven
Heating process conditions is：First paragraph is heated to 610 DEG C with 15 DEG C/min of heating rate, is incubated 18 minutes；Make loading shaping mould
Glass Transition in tool；Second segment is heated to 685 DEG C with 25 DEG C/min of heating rate, is incubated 15 minutes, and be opposite to hot bending
Molding die surface in special atmosphere oven applies 180 grams/cm of pressure；3rd section with 32 DEG C/min of heating speed
Rate is heated to 735 DEG C, is incubated 10 minutes.Wherein described speed of furnace cooling control is 35 DEG C/min, while in hot bending special atmosphere oven
Protective gas be nitrogen, the addition of nitrogen is to reach in stove oxygen content≤0.10% for standard.
Embodiment 3
A kind of preparation method of curved glass panel, the preparation method comprise the following steps：
(1) preparation of flat glass panel, glass is cut by design size, after being ground, polishing, carves milling into default size.
(2) the glass surface spraying protective layer after milling will be carved, loaded in mould after protective layer drying；Wherein cavity plate
Consistent with the crooked radian of curved glass panel of the radian of punch internal cavity with designing, the mould uses graphite material system
It is standby to form.
(3) shaping of curved glass panel, mould is fixed in hot bending special atmosphere oven, opens hot bending protection gas
Atmosphere stove, three sections are divided to be heated to being processed Glass Transition, and the molding die surface being opposite in hot bending special atmosphere oven applies pressure
Power, protective layer is penetrated into the glass basis after softening, glass is molded according to mold shape under pressure, finally control
Speed of furnace cooling processed makes glass cool to room temperature with the furnace, obtains the curved glass panel；Wherein in hot bending special atmosphere oven
Heating process conditions is：First paragraph is heated to 600 DEG C with 12 DEG C/min of heating rate, is incubated 16 minutes；Make loading shaping mould
Glass Transition in tool；Second segment is heated to 680 DEG C with 23 DEG C/min of heating rate, is incubated 14 minutes, and be opposite to hot bending
Molding die surface in special atmosphere oven applies 160 grams/cm of pressure；3rd section with 30 DEG C/min of heating speed
Rate is heated to 730 DEG C, is incubated 10 minutes.Wherein described speed of furnace cooling control is 32 DEG C/min, while in hot bending special atmosphere oven
Protective gas be nitrogen, the addition of nitrogen is to reach in stove oxygen content≤0.12% for standard.
The above described is only a preferred embodiment of the present invention, be not intended to limit the scope of the present invention,
Therefore any subtle modifications, equivalent variations and modifications that every technical spirit according to the present invention is made to above example, still
Belong in the range of technical solution of the present invention.
Claims (3)
1. a kind of preparation method of curved glass panel, it is characterised in that the preparation method comprises the following steps：
(1) preparation of flat glass panel, glass is cut by design size, after being ground, polishing, carves milling into default size；
(2) the glass surface spraying protective layer after milling will be carved, loaded in mould after protective layer drying；
(3) shaping of curved glass panel, mould is fixed in hot bending special atmosphere oven, opens hot bending protective atmosphere
Stove, three sections are divided to be heated to being processed Glass Transition, and the molding die surface being opposite in hot bending special atmosphere oven applies pressure,
Protective layer is penetrated into the glass basis after softening, glass is molded according to mold shape under pressure, finally control
Speed of furnace cooling makes glass cool to room temperature with the furnace, obtains the curved glass panel；Adding wherein in hot bending special atmosphere oven
Thermal process condition is：First paragraph is heated to 590~610 DEG C with 10~15 DEG C/min of heating rate, is incubated 15~18 minutes；
Make the Glass Transition in loading mould；Second segment is heated to 670~685 DEG C with 20~25 DEG C/min of heating rate, protects
Temperature 12~15 minutes, and the molding die surface being opposite in hot bending special atmosphere oven applies 150~180 grams/cm
Pressure；3rd section is heated to 725~735 DEG C with 28~32 DEG C/min of heating rate, is incubated 8~10 minutes.
A kind of 2. preparation method of curved glass panel according to claim 1, it is characterised in that：In the step (3)
Speed of furnace cooling, control as between 30~35 DEG C/min, the protective gas wherein in hot bending special atmosphere oven is nitrogen, nitrogen
Addition to reach in stove oxygen content≤0.15% for standard.
A kind of 3. preparation method of curved glass panel according to claim 3, it is characterised in that：In the step (3)
Mould is made up of cavity plate, punch-pin two parts, wherein the radian of cavity plate and punch internal cavity and the curved glass panel of design
Crooked radian is consistent, and the mould is prepared using graphite material or ceramic material.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201710865090.4A CN107473574A (en) | 2017-09-22 | 2017-09-22 | A kind of preparation method of curved glass panel |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201710865090.4A CN107473574A (en) | 2017-09-22 | 2017-09-22 | A kind of preparation method of curved glass panel |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN107473574A true CN107473574A (en) | 2017-12-15 |
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ID=60586240
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201710865090.4A Pending CN107473574A (en) | 2017-09-22 | 2017-09-22 | A kind of preparation method of curved glass panel |
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| Country | Link |
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| CN (1) | CN107473574A (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN111302608A (en) * | 2020-03-30 | 2020-06-19 | 苏州胜利精密制造科技股份有限公司 | Processing and forming method of curved surface glass with holes |
| CN114634298A (en) * | 2022-03-30 | 2022-06-17 | 万津实业(赤壁)有限公司 | Curved glass cover plate and preparation method thereof |
Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102515483A (en) * | 2012-01-04 | 2012-06-27 | 周晓辉 | Method for glass cutting, curved surface forming or grating manufacturing |
| CN104023099A (en) * | 2014-06-20 | 2014-09-03 | 蓝思科技股份有限公司 | Mobile phone curved glass panel and forming method thereof |
-
2017
- 2017-09-22 CN CN201710865090.4A patent/CN107473574A/en active Pending
Patent Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102515483A (en) * | 2012-01-04 | 2012-06-27 | 周晓辉 | Method for glass cutting, curved surface forming or grating manufacturing |
| CN104023099A (en) * | 2014-06-20 | 2014-09-03 | 蓝思科技股份有限公司 | Mobile phone curved glass panel and forming method thereof |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN111302608A (en) * | 2020-03-30 | 2020-06-19 | 苏州胜利精密制造科技股份有限公司 | Processing and forming method of curved surface glass with holes |
| CN114634298A (en) * | 2022-03-30 | 2022-06-17 | 万津实业(赤壁)有限公司 | Curved glass cover plate and preparation method thereof |
| CN114634298B (en) * | 2022-03-30 | 2023-09-29 | 万津实业(赤壁)有限公司 | Curved glass cover plate and preparation method thereof |
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| SE01 | Entry into force of request for substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| RJ01 | Rejection of invention patent application after publication |
Application publication date: 20171215 |
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| RJ01 | Rejection of invention patent application after publication |