Method for annealing stress of prestressed glass laser

A glass laser and prestressing technology, applied in the field of laser processing, laser processing of tempered glass and semi-tempered glass, can solve the problem that prestressed glass cannot be processed subsequently.

Active Publication Date: 2013-03-27
张立国
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0006] The technical problem to be solved by the present invention is to provide a prestressed glass laser destressing method, so that the prest

Method used

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  • Method for annealing stress of prestressed glass laser
  • Method for annealing stress of prestressed glass laser
  • Method for annealing stress of prestressed glass laser

Examples

Experimental program
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Effect test

Embodiment 1

[0028] Example 1: figure 1 It is a schematic structural diagram of the laser stress relief device for laser drilling of chemically tempered glass in embodiment 1, by figure 1 It can be seen that: the initial collimated incident laser beam 11 is reflected by the first galvanometer lens 15, and its reflected beam 14 is reflected by the second galvanometer lens 13 to obtain a reflected laser beam 18, and the reflected laser beam 18 is injected into the chemically tempered glass 19, except Part of the laser light is absorbed, and part of the laser light is transmitted through the chemically tempered glass 19 to obtain a transmitted light beam 110 .

[0029] The collimated incident laser beam 11 is used to heat the chemically tempered glass 19, also known as heating laser. The heating laser is a continuous carbon dioxide gas laser with a wavelength of 10.6 microns, an average power of 50 W, a fundamental mode, and a collimated incident laser beam diameter of 2 mm.

[0030]The fir...

Embodiment 2

[0042] image 3 It is a structural schematic diagram of the laser stress relief device for laser cutting of chemical tempered glass in embodiment 2, by image 3 It can be seen that when the collimated incident laser beam 31 passes through the chemically toughened glass 32 , part of the laser light is absorbed, and part of the laser light is transmitted through the chemically toughened glass 32 to obtain a transmitted beam 33 .

[0043] The collimated incident laser beam 31 is used to heat the chemically tempered glass 32, which is called heating laser. The heating laser is a continuous carbon dioxide gas laser with a wavelength of 10.6 microns, an average power of 50 watts, a fundamental mode, and a collimated incident laser beam 31 with a beam diameter of 2 mm.

[0044] The thickness of the chemically tempered glass 32 is 0.8 mm, and the tempering depth of the upper and lower surfaces is 70 microns.

[0045] The collimated incident laser beam 31 moves in a straight line fro...

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Abstract

The invention relates to a method for annealing stress of prestressed glass laser. According to the method, the rapid heating characteristic of laser on the prestressed glass (toughened glass and half-strengthened glass) is utilized to carry out rapid heating stress annealing treatment on the selective local area of the prestressed glass required to be subjected to subsequent processing, so that the local area has the processable characteristics, the overall using strength requirement of the prestressed glass is not substantiality influenced. The industry problem that the prestressed glass is difficultly subjected to subsequent processing is solved by the method.

Description

technical field [0001] The invention relates to the field of laser processing, in particular to the field of laser processing of tempered glass and semi-tempered glass. Background technique [0002] Tempered glass and semi-tempered glass are actually a kind of prestressed glass. In order to improve the strength of glass, chemical or physical methods are usually used to form compressive stress on the glass surface. When the glass is subjected to external force, the surface stress is first offset, thereby improving the bearing capacity and enhancing the glass's own wind pressure resistance, cold and heat resistance, impact resistance, etc. . [0003] Physical tempering is the method of cutting ordinary annealed glass into the required size first, then heating it close to the softening point, and then rapidly and uniformly cooling it to obtain prestressed glass. Depending on the thickness of the glass, the time for heating and cooling is different. After physical tempering t...

Claims

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Application Information

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IPC IPC(8): C03B32/00
Inventor 张立国
Owner 张立国
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