A kind of laser cutting method of tempered glass

Abstract

The invention provides a laser cutting method of tempered glass. The method comprises the following steps: (1) distributing a bilateral cooling jet assisted laser cutting beam at the to-be-cut starting position of tempered glass; (2) performing laser cutting along the to-be-cut path of the tempered glass, wherein the processing process parameters comprise a power density P and a cutting speed value v; and (3) closing laser when the laser cutting beam approaches the destination of the to-be-cut path of the tempered glass, and closing bilateral strip cooling jet flow when the bilateral strip cooling jet flow reaches the destination of the to-be-cut path of the tempered glass. By utilizing the bilateral cooling jet forced cooling method, bilateral pulling force is formed in the original irridation position of the slit center, so that a steep tensile peak delta' pulling occurs in the center, the tempered glass is cut according to the cutting track when the cutting speed value v is more than a macro-cracking travelling speed of the tempered glass, and the technical problem that current tempered glass cannot be cut can be solved.

Description

technical field [0001] The invention belongs to the technical field of laser processing, and in particular relates to a laser cutting method for tempered glass. Background technique [0002] The processing of glass materials occupies an increasingly important position in industrial processing. Traditional glass processing uses mechanical and contact methods, such as glass cutting with diamonds and metal pulleys. The quality and precision of these methods of processing are far from meeting some special needs in the project, and the glass must be polished after cutting, which seriously affects the processing efficiency. Due to the advantages of high energy density and non-contact of laser, people try to use laser to process brittle materials such as glass and ceramics, and carry out theoretical and experimental research on laser cutting. [0003] At present, the laser cutting of glass mainly uses the method of thermal stress cutting. The so-called laser thermal stress cuttin...

AI Technical Summary

Problems solved by technology

Therefore, the current cutting or opening of tempered glass must be completed before tempering. Once tempered, no further cutting or opening operations can be performed.

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