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.
CN102992601AActive Publication Date: 2013-03-27张立国
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Patent Information

Authority / Receiving Office
CN · China
Current Assignee / Owner
张立国
Publication Date
2013-03-27

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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.
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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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