CN111204993A - Process for improving strength of toughened curved glass - Google Patents
Process for improving strength of toughened curved glass Download PDFInfo
- Publication number
- CN111204993A CN111204993A CN202010128493.2A CN202010128493A CN111204993A CN 111204993 A CN111204993 A CN 111204993A CN 202010128493 A CN202010128493 A CN 202010128493A CN 111204993 A CN111204993 A CN 111204993A
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- CN
- China
- Prior art keywords
- glass
- polishing
- ion exchange
- solution
- treatment
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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
- 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
- C03C21/001—Treatment of glass, not in the form of fibres or filaments, by diffusing ions or metals in the surface in liquid phase, e.g. molten salts, solutions
- C03C21/002—Treatment of glass, not in the form of fibres or filaments, by diffusing ions or metals in the surface in liquid phase, e.g. molten salts, solutions to perform ion-exchange between alkali ions
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- 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
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- 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
- B24B29/00—Machines or devices for polishing surfaces on work by means of tools made of soft or flexible material with or without the application of solid or liquid polishing agents
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B24—GRINDING; POLISHING
- B24C—ABRASIVE OR RELATED BLASTING WITH PARTICULATE MATERIAL
- B24C1/00—Methods for use of abrasive blasting for producing particular effects; Use of auxiliary equipment in connection with such methods
- B24C1/08—Methods for use of abrasive blasting for producing particular effects; Use of auxiliary equipment in connection with such methods for polishing surfaces, e.g. smoothing a surface by making use of liquid-borne abrasives
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- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Chemical & Material Sciences (AREA)
- Life Sciences & Earth Sciences (AREA)
- Chemical Kinetics & Catalysis (AREA)
- General Chemical & Material Sciences (AREA)
- Geochemistry & Mineralogy (AREA)
- Materials Engineering (AREA)
- Organic Chemistry (AREA)
- Surface Treatment Of Glass (AREA)
Abstract
The invention discloses a strength improving process for toughened curved glass, which relates to the technical field of toughened glass production and comprises the following steps: the method comprises the following steps of glass surface primary toughening treatment, glass surface microcrack repair, surface secondary toughening treatment and glass surface secondary polishing treatment. The method carries out surface strengthening and surface polishing treatment on the glass product to repair surface microcracks and uniformly distribute surface stress; and then, the stress layer on the surface of the glass is thickened by matching with multiple times of strengthening, so that the stability of the impact test and the extrusion test of the mobile phone glass is improved. The invention can effectively improve the surface strength of the mobile phone screen glass product, the mobile phone curved screen is not easy to break, and the drop test and the extrusion test both meet the requirements.
Description
Technical Field
The invention relates to the technical field of toughened glass production, in particular to a process for improving the strength of toughened curved glass.
Background
Along with the gradual popularization of touch screen mobile phones, the strength requirement of a mobile phone touch screen is higher and higher, the strength improvement progress of raw materials cannot meet the strength requirement of the existing mobile phone, and some special post-process treatment is needed to improve the product strength, so that the process for enhancing the product strength by post-process development is carried forward. At present, the components of a mobile phone touch screen in the prior art are generally sodium silicate glass, and the common strengthening is to improve the strength of the mobile phone touch screen by exchanging external potassium with sodium ions of the mobile phone touch screen in a chemical strengthening way, so that the impact resistance and the surface hardness of the mobile phone touch screen are improved; but the impact resistance stability after chemical strengthening is relatively poor, and the phenomenon of unstable performance test is easy to occur.
Disclosure of Invention
The technical problem to be solved by the invention is to provide a strength improving process for tempered curved glass, which can effectively improve the strength of a mobile phone touch screen and improve the stability of an impact test and an extrusion test of the mobile phone touch screen.
In order to solve the technical problems, the technical scheme adopted by the invention is as follows:
a process for improving the strength of toughened curved glass comprises the following steps:
firstly, glass surface toughening treatment: firstly, carrying out chemical strengthening treatment on glass, soaking the glass in an ion exchange solution containing potassium salt for ion exchange, and enhancing the surface stress of the glass through potassium and sodium exchange, wherein the temperature of the ion exchange solution is 380-430 ℃; the soaking time is 100-500 minutes;
and (II) repairing microcracks on the glass surface: fixing the glass product on a jig corresponding to the product model, and polishing and repairing the surface of the glass by adopting polishing solution for 1-20 minutes; polishing load is 50-500kg, and rotation speed is 1-100 RPM;
and (III) secondary toughening treatment of the glass surface: soaking the glass in the ion exchange solution again, wherein the temperature of the ion exchange solution is 380-430 ℃, and the soaking time is 30-150 minutes;
and (IV) secondary polishing treatment of the glass surface: fixing the glass product on a jig corresponding to the product model, and performing secondary polishing repair on the surface of the glass by using polishing liquid, wherein the polishing time is 1-10 minutes; the polishing load is 50-500kg and the rotation speed is 1-100RPM.
Preferably, the polishing solution is a cerium oxide solution.
Preferably, the ion exchange solution is an aqueous solution made of potassium nitrate, potassium silicate, rubidium nitrate and cesium nitrate.
Adopt the produced beneficial effect of above-mentioned technical scheme to lie in: compared with the prior art, the invention simplifies the process operation steps, and repairs surface microcracks and makes the surface stress distribution uniform by carrying out surface strengthening and surface polishing treatment on the glass product; and then, the stress layer on the surface of the glass is thickened by matching with multiple times of strengthening, so that the stability of the impact test and the extrusion test of the mobile phone glass is improved. The invention can effectively improve the surface strength of the mobile phone screen glass product, the mobile phone curved screen is not easy to break, and the drop test and the extrusion test both meet the requirements.
Detailed Description
In order to make the objects, technical solutions and advantages of the present invention more apparent, the present invention is described in further detail below with reference to specific embodiments. It should be understood that the specific embodiments described herein are merely illustrative of the invention and are not intended to limit the invention.
The invention provides a process for improving the strength of toughened curved glass, which comprises the following steps:
firstly, glass surface toughening treatment: firstly, carrying out chemical strengthening treatment on glass, soaking the glass in an ion exchange solution containing potassium salt for ion exchange, and enhancing the surface stress of the glass through potassium and sodium exchange, wherein the temperature of the ion exchange solution is 380-430 ℃; the soaking time is 100-500 minutes; by utilizing the surface treatment technology after chemical strengthening, the stress layer on the surface of the glass is thickened, and the strength of the product is effectively improved.
Wherein the ion exchange solution is an aqueous solution prepared from potassium nitrate, potassium silicate, rubidium nitrate and cesium nitrate.
And (II) repairing microcracks on the glass surface: fixing the glass product on a jig corresponding to the product model, and polishing and repairing the surface of the glass by adopting polishing solution for 1-20 minutes; the polishing load is 50-500kg and the rotation speed is 1-100RPM. The surface is repaired by a cerium oxide polishing solution by designing a special polishing material and matching with a jig of a 3D glass product corresponding product model, wherein the repairing time is 1-20 minutes; generally, CS (stress value) is reduced, and the toughened glass product is subjected to impact test and extrusion test, and if the toughened glass product does not reach the standard, the next step of treatment is required;
and (III) secondary toughening treatment of the glass surface: soaking the glass in the ion exchange solution again, wherein the temperature of the ion exchange solution is 380-430 ℃, and the soaking time is 30-150 minutes; the ion exchange solution is the same as the step (I).
By carrying out secondary toughening treatment on the surface of the glass product, the stress data such as the surface stress CS/DOL (stress value/stress layer depth) and the like of the glass are uniformly distributed, the method comprises the steps of (II) repairing micro cracks on the surface, then the CS, DOL and other related stress parameters on the surface of the 3D glass product are different, and the phenomena of nonuniform distribution of the stress values affect the impact test and the extrusion test of the product; at the moment, the CS/DOL on the surface of the product is uniformly distributed after the product is subjected to chemical treatment again, and the effect test after stress and microcrack are repaired is qualified.
And (IV) secondary polishing treatment of the glass surface: fixing the glass product on a jig corresponding to the product model, and performing secondary polishing repair on the surface of the glass by using polishing liquid, wherein the polishing time is 1-10 minutes; the polishing load is 50-500kg and the rotation speed is 1-100RPM. The secondary polishing treatment is carried out on the glass product, so that the microcracks on the surface of the glass can be further repaired, and the effect of stable performance is achieved.
After the glass product is subjected to secondary chemical strengthening and secondary polishing treatment, the drop test and the extrusion test of the product of the mobile phone curved glass after the improvement of the process technology are both stepped, so that the product which cannot meet the requirements originally can be improved by the method for discharge, and ideal effects can be achieved.
The principles and embodiments of the present invention are explained herein using specific examples, which are presented only to assist in understanding the method and its core concepts. It should be noted that, for those skilled in the art, it is possible to make various improvements and modifications to the present invention without departing from the principle of the present invention, and those improvements and modifications also fall within the scope of the claims of the present invention.
Claims (3)
1. The strength improving process of the toughened curved glass is characterized by comprising the following steps of:
firstly, glass surface toughening treatment: firstly, carrying out chemical strengthening treatment on glass, soaking the glass in an ion exchange solution containing potassium salt for ion exchange, and enhancing the surface stress of the glass through potassium and sodium exchange, wherein the temperature of the ion exchange solution is 380-430 ℃; the soaking time is 100-500 minutes; and (II) repairing microcracks on the glass surface: fixing the glass product on a jig corresponding to the product model, and polishing and repairing the surface of the glass by adopting polishing solution for 1-20 minutes; polishing load is 50-500kg, and rotation speed is 1-100 RPM;
and (III) secondary toughening treatment of the glass surface: soaking the glass in the ion exchange solution again, wherein the temperature of the ion exchange solution is 380-430 ℃, and the soaking time is 30-150 minutes;
and (IV) secondary polishing treatment of the glass surface: fixing the glass product on a jig corresponding to the product model, and performing secondary polishing repair on the surface of the glass by using polishing liquid, wherein the polishing time is 1-10 minutes; the polishing load is 50-500kg and the rotation speed is 1-100RPM.
2. The process for enhancing the strength of tempered curved glass according to claim 1, wherein the process comprises the following steps: the polishing solution is a cerium oxide solution.
3. The process for enhancing the strength of tempered curved glass according to claim 1, wherein the process comprises the following steps: the ion exchange solution is an aqueous solution prepared from potassium nitrate, potassium silicate, rubidium nitrate and cesium nitrate.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202010128493.2A CN111204993A (en) | 2020-02-28 | 2020-02-28 | Process for improving strength of toughened curved glass |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202010128493.2A CN111204993A (en) | 2020-02-28 | 2020-02-28 | Process for improving strength of toughened curved glass |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN111204993A true CN111204993A (en) | 2020-05-29 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202010128493.2A Pending CN111204993A (en) | 2020-02-28 | 2020-02-28 | Process for improving strength of toughened curved glass |
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| Country | Link |
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN113121125A (en) * | 2021-04-14 | 2021-07-16 | 万津实业(赤壁)有限公司 | Processing method for 2.5D float glass |
| CN115477473A (en) * | 2021-05-31 | 2022-12-16 | 华为技术有限公司 | Microcrystalline glass cover plate, preparation method, repairing and anti-fingerprint method and electronic equipment |
Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103086590A (en) * | 2011-11-02 | 2013-05-08 | 富泰华工业（深圳）有限公司 | Frosted glass manufacturing method |
| CN104829139A (en) * | 2015-04-22 | 2015-08-12 | 四川旭虹光电科技有限公司 | Polishing solution for improving glass surface strength and polishing method using the same |
| CN106830709A (en) * | 2017-01-22 | 2017-06-13 | 南昌欧菲光学技术有限公司 | The processing method of glass substrate |
| CN109987854A (en) * | 2019-04-12 | 2019-07-09 | 东莞市嘉逸光电有限公司 | A kind of secondary hardening method of tempered glass |
-
2020
- 2020-02-28 CN CN202010128493.2A patent/CN111204993A/en active Pending
Patent Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103086590A (en) * | 2011-11-02 | 2013-05-08 | 富泰华工业（深圳）有限公司 | Frosted glass manufacturing method |
| CN104829139A (en) * | 2015-04-22 | 2015-08-12 | 四川旭虹光电科技有限公司 | Polishing solution for improving glass surface strength and polishing method using the same |
| CN106830709A (en) * | 2017-01-22 | 2017-06-13 | 南昌欧菲光学技术有限公司 | The processing method of glass substrate |
| CN109987854A (en) * | 2019-04-12 | 2019-07-09 | 东莞市嘉逸光电有限公司 | A kind of secondary hardening method of tempered glass |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN113121125A (en) * | 2021-04-14 | 2021-07-16 | 万津实业(赤壁)有限公司 | Processing method for 2.5D float glass |
| CN115477473A (en) * | 2021-05-31 | 2022-12-16 | 华为技术有限公司 | Microcrystalline glass cover plate, preparation method, repairing and anti-fingerprint method and electronic equipment |
| CN115477473B (en) * | 2021-05-31 | 2023-09-22 | 华为技术有限公司 | Microcrystalline glass cover plate, preparation method, repairing and anti-fingerprint method and electronic equipment |
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Application publication date: 20200529 |