Water jet and laser etching machine and method for ceramics

A technology of laser etching and water jet, which is applied in the direction of laser welding equipment, welding equipment, metal processing equipment, etc., can solve the problems of affecting the surface processing quality of materials, severe thermal stress and microcracks of the recast layer, and achieve low cost, The effect of reducing the thickness of the recast layer and reducing the heat-affected zone

Inactive Publication Date: 2015-04-08
JIANGNAN UNIV
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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

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  • Water jet and laser etching machine and method for ceramics
  • Water jet and laser etching machine and method for ceramics
  • Water jet and laser etching machine and method for ceramics

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[0031] In order to make the present invention more clearly represented, the present invention will be further described below in conjunction with the accompanying drawings.

[0032] Such as figure 1 As shown, it includes a laser system and a water jet system. The laser system is the main body. The ablation effect of the laser beam (5) can etch the corresponding grooves on the ceramic surface. The water jet system plays an auxiliary role. The water jet beam (6) The erosion effect effectively reduces the slag on the surface of the groove.

[0033] The pulse laser current intensity of the laser system is 150+50A, the pulse width is 0.6+0.2ms, the pulse frequency is 30±10Hz, the scanning speed is 0.8±0.2mm / s, the laser etching ceramic depth is nanometer level, and the required laser system The process parameters cannot be too large.

[0034] The water jet system sprays the water jet beam (6) through the medical needle (8) installed on the nozzle (9). The diameter of the medical needle (...

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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...

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Application Information

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IPC IPC(8): B23K26/362B23K26/402B23K26/142B23K26/146
Inventor 谢兵兵袁根福张大明陆平卫
Owner JIANGNAN UNIV
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