Method of composite laser cleaning

Abstract

The invention relates to a method of composite laser cleaning. The method of the composite laser cleaning is characterized by comprising the following steps that (1), two kinds of different wavelengthlasers are converged to the surface of a metal material through an optical system in a cleaning head, a rust layer of the material surface is vaporized after absorbing the laser; (2), the cleaning head absorbs the vaporization substance; and (3), the cleaning head is moved to clean the rust layer on the surface of the metal material. According to the method, one of the wavelength lasers are usedfor preheating the rust layer on the surface of the metal material, the absorption efficiency of the rust layer on the laser is increased, and the other one of the wavelength lasers vaporizes the rustlayer on the surface of the metal material, the cleaning head is moved to enable a focusing light spot to linearly reciprocate along the surface of the metal material until the whole cleaning processis completed, so that the cleanness of the thickness with 0.5 mm of the rust layer on the metal material surface can be reached.

Description

technical field [0001] The invention relates to a method for cleaning composite lasers, in particular to a method for cleaning thicker substances on the surface of metal materials with composite lasers. Background technique [0002] At present, the traditional fiber laser cleaning of the surface of metal materials mainly adopts: the single fiber laser beam is converged to the rust layer on the surface of the metal material through the optical system of the cleaning head to make it vaporized after absorbing the laser, the cleaning head absorbs the vaporized substances, and the cleaning head is moved to realize the cleaning of the surface of the metal material. Rust layer cleaning, in this way, the absorption efficiency of the laser on the surface of the metal material is low, only the thinner rust layer can absorb the laser energy, the maximum thickness of the rust layer is only 0.2mm, and the thicker rust layer on the surface of the material cannot be cleaned In order to rem...

AI Technical Summary

Problems solved by technology

[0002] At present, the traditional fiber laser cleaning of the surface of metal materials mainly adopts: the single fiber laser beam is converged to the rust layer on the surface of the metal material through the optical system of the cleaning head to make it vaporized after absorbing the laser, the cleaning head absorbs the vaporized substances, and the cleaning head is moved to realize the cleaning of the surface of the metal material. Rust layer cleaning, in this way, the absorption efficiency of the laser on the surface of the metal material is low, only the thinner rust layer can absorb the laser energy, the maximum thickness of the rust layer is only 0.2mm, and the thicker rust layer on the surface of the material cannot be cleaned In order to remove thicker substances, it can only be cleaned repeatedly and at a slower speed. However, due to the low absorption rate of laser light on the surface of metal materials, the above methods cannot be used for thicker substances.

Therefore, the traditional method of laser cleaning the surface of metal materials limits its ability to clean thicker substances on the surface of metal materials.

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