A preparation method of laser shock-strengthened absorbing protective layer that can be quickly coated and removed

Abstract

The invention is a laser shock strengthened absorbing protective layer that can be quickly coated and removed and its preparation method, which consists of asphalt, polyethylene, epoxy resin, plasticizer, and rubber adhesive in a ratio of 26:6:4:3:1 Mixed, black, with high laser energy absorption rate. The rapid coating and removal process of the absorbent protective layer is mainly to mix and prepare the ingredients of the absorbent protective layer in proportion, and then use a heating device to heat the absorbent protective layer mixture; use a spraying device and a flat nozzle to evenly coat the absorbent protective layer mixture on the The surface of the component (bit) to be treated by laser shock strengthening treatment will form a solid absorption protective layer film after cooling and solidification; after laser shock strengthening treatment, the absorption protective layer film will be torn off as a whole to realize efficient cleaning and removal of the absorption protective layer film. The entire process of preparation, coating and removal is simple and easy to operate, with strong versatility, and can be used for rapid coating and efficient removal of the absorbing protective layer on complex parts (bits) and laser shock strengthening production lines.

Description

technical field [0001] The invention relates to the application field of laser technology, in particular to a preparation method of a laser shock strengthened absorption protective layer that can be quickly coated and removed. Background technique [0002] Laser Shock Processing (LSP) is a new type of surface strengthening technology, which uses the mechanical effect of laser-induced plasma shock waves to cause severe plastic deformation on the surface of metal materials, thereby changing the microstructure, forming residual stress, and significantly improving the quality of metal materials. Resistance to fatigue, wear and stress corrosion. The technical principle is to use high-power (GW-level) short-pulse width (tens of ns) nanosecond laser beams to irradiate the surface of metal materials. The surface of the material is covered with an absorbing protective layer for absorbing laser energy, and explosive gasification and evaporation occur to form high temperature and high ...

AI Technical Summary

Problems solved by technology

However, the current absorbing protective layer is generally made of aluminum foil, black tape, etc., which need to be applied manually, which is inefficient and expensive, and the quality of the application is difficult to guarantee

On the other hand, although the Rapid Coater(TM) rapid coating system invented in the United States can spray black paint on the surface of the component and quickly complete the coating process of the absorption protective layer, the cleaning after the strengthening treatment is more complicated, the pollution is not clean, and the cost is high

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