Method and device for laser cleaning paint

Abstract

The invention discloses a method and device for laser cleaning paint, and belongs to the technical field of paint cleaning. The method is used for solving the problems that at the present, the cleaning efficiency is low and the workpiece is prone to damage; the scheme adopted by the method mainly comprises the following steps that a corresponding relation between a paint thickness average value ofthe surface of a workpiece and a laser cleaning parameter is established; the paint thickness average value of the surface of the workpiece to be cleaned is measured, and the corresponding laser cleaning parameter is selected for laser cleaning of the paint on the surface of the workpiece; after the cleaning is completed, whether the cleaning surface is clean or not is detected; if not, an uncleaned area is determined, and the paint thickness average value corresponding to the uncleaned area is detected; the corresponding laser cleaning parameter is selected according to the detected paint thickness average value, the uncleaned area is cleaned again, and the steps are repeated until the uncleaned area is cleaned. According to the scheme, and the method and device have the advantages of being high in cleaning efficiency, safe and reliable, high in automation degree, free of damage to the workpiece and the like..

Description

technical field [0001] The invention mainly relates to the technical field of laser cleaning, in particular to a method and device for laser cleaning paint. Background technique [0002] Laser cleaning refers to the use of pulsed / continuous high-energy laser beams to irradiate the surface of the workpiece, so that the dirt, rust or coating on the surface evaporates (gasification) / ablation / broken peeling / vibration ejection, so as to clean and purify the workpiece. . Compared with traditional mechanical cleaning, chemical cleaning, ultrasonic cleaning and other cleaning methods, laser cleaning has the characteristics of non-contact, non-grinding, low operating cost, safety and environmental protection. However, there are major problems such as low efficiency when laser cleaning paint at present. Only high-power lasers can be used to remove paint efficiently, and the large heat input will damage the substrate to varying degrees. For example, the invention patent with the pat...

AI Technical Summary

Problems solved by technology

For example, the invention patent with the patent application number 201110415300.2, although a high-power laser cleaning method is proposed, but the cleaning process is not monitored, which is easy to cause damage to the cleaning object

And the thickness of the paint is different, which may require different parameters of the laser output during cleaning, and the number of scans is also different

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