Water jet and laser etching machine and method for ceramics

Abstract

The invention provides a water jet and laser etching machine and method for ceramics. The machine and the method are characterized in that through a hand crank and a linear guide rail, the optimal position of a nozzle relative to the surface of ceramic is determined, a laser scanning path is reasonably modified, and the ceramic is machined jointly with laser and water jet. The method includes the steps of 1, determining the size and machining position of the ceramic; 2, determining process parameters of a laser system and process parameters of a water jet system ; 3, determining a laser scanning speed and a scanning path; and 4, performing etching with the laser and the water jet according to the scanning path. The machine and the method have the advantages that required grooves can be made in the surface of the ceramic by etching and the surface of each groove has no evident defects such as slag and a recast layer.

Description

Technical field: [0001] The invention relates to the application field of laser processing, in particular to a water jet-laser etching ceramic device and method. Background technique: [0002] Ceramics have excellent high-temperature mechanical properties, strong oxidation resistance, good wear resistance, good thermal stability, small thermal expansion coefficient, high thermal conductivity, high hardness, thermal shock resistance and chemical corrosion resistance. It is favored in the fields of petrochemical industry, aerospace and automobile industry, some of these fields need to engrave round grooves on the surface of ceramics, and some need to punch round holes on the surface. However, due to the high hardness and brittleness of ceramics, conventional mechanical processing has defects such as severe tool wear and rough processing surface, while special processing such as electric spark and ultrasonic still has the disadvantage of low efficiency. [0003] Laser processi...

AI Technical Summary

Problems solved by technology

As one of the laser processing technologies, laser etching technology makes laser etching of difficult-to-process materials such as ceramics a reality, but since laser processing mainly uses high-density energy to achieve material processing through melting, evaporation and spraying, Therefore, there will be relatively serious recasting layer and inevitable residual thermal stress and microcracks on the surface of the material, which will affect the surface processing quality of the material.

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