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Method for destressing defective glass product

A glass and defective technology, applied in the direction of glass production, etc., can solve the problems of glass bending deformation, low rework yield, long rework time, etc., to avoid scratches, reduce the difficulty of rework, and achieve good cleaning effect

Inactive Publication Date: 2019-01-22
湖北天宝光电科技有限公司
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Problems solved by technology

Therefore, the yield rate in the process has a great impact on the cost, and the defective products in the later stage need to be reworked.
However, because the glass is chemically strengthened, there is stress on the surface, the rework time is very long, and because the surface is not removed uniformly, the glass will bend and deform, and the rework yield is very low

Method used

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  • Method for destressing defective glass product
  • Method for destressing defective glass product
  • Method for destressing defective glass product

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Embodiment Construction

[0029] The present invention will be further described in detail below in conjunction with the accompanying drawings, so that those skilled in the art can implement it with reference to the description.

[0030] Such as figure 1 Shown, the present invention provides a kind of method for stress relief of defective glass products, comprising the following steps:

[0031] Step 1. Put the defective glass in the glass deinking agent for 5-8 minutes to remove the ink and film on the glass surface, so that the glass can reach a transparent and colorless state;

[0032] Step 2. Clean the deinked transparent glass with ultrasonic waves to remove the dirt layer on the surface.

[0033] Step 3: Place the cleaned glass in a high-concentration sodium salt melt to replace the potassium ions in the glass, thereby eliminating the compressive stress on the surface due to the presence of potassium ions and restoring the glass to a stress-free state. The sodium salt is high-purity sodium nitra...

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Abstract

The invention discloses a method for destressing a defective glass product. The method includes the following steps: 1, standing the defective glass product in a glass deinking agent for 5-8 min to remove ink and a film on the surface of the film in order to make the glass transparent and colorless; 2, ultrasonically cleaning the deinked transparent glass to remove a surface dirt layer; and 3, placing the cleaned glass in a high-concentration sodium salt solution to replace the potassium ions in the glass in order to eliminate compressive stress of the surface, caused by the potassium ions, and restore the glass to a stress-free state. The method can completely avoid glass bending deformation caused by uneven surface removal during reworking of the defective product, and can greatly reducethe repairing difficulty and improve the repairing yield. Experimental data show that the reworking yield is increased by about 20%.

Description

technical field [0001] The invention relates to the field of glass destressing. More specifically, the present invention relates to a method for stress relief of defective glass products. Background technique [0002] With the rapid development of the mobile phone industry, a brand-new glass structure has emerged - 3D mobile phone glass. The production cost of 3D glass is very high, about 4-5 times that of 2D / 2.5D glass. Therefore, the yield rate in the process has a great impact on the cost, and all defective products in the later stage need to be reworked. However, because the glass is chemically strengthened, there is stress on the surface, and the rework time is very long, and because the surface is not removed uniformly, the glass will be bent and deformed, and the rework yield is very low. Contents of the invention [0003] The invention provides a stress relief method for defective glass, which can effectively remove the surface stress of defective glass. [0004...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C03B32/00
CPCC03B32/00Y02P40/57
Inventor 黎锦林
Owner 湖北天宝光电科技有限公司
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