With the increasingly stringent requirements for environmental protection, laser cleaning technology has attracted more and more attention. This paper briefly introduces the principle, advantages and disadvantages of laser cleaning technology.
Laser cleaning is to irradiate the processed workpiece with the characteristics of high energy and high concentration of laser. After absorbing laser energy, the adhesives (dirt, oxide scale, rust spot, organic coating, etc.) on the surface of the substrate can melt, vaporize, evaporate, expand instantaneously and be driven off the surface of the substrate by steam, so as to purify the substrate. Objectives of body surface.

Advantages of laser cleaning
Laser cleaning has the advantages of high efficiency, high speed and low cost, low heat load and mechanical load on the matrix, and does not damage the matrix. There is no need for water or solvent, and the waste is easy to collect, no pollution to the environment. It is safe and reliable, and does not damage the health of operators. It can remove rust spots, oxide scales, dirt and coatings with different thickness and composition. The cleaning process is easy to realize automation and remote control operation, and can be used for large-scale laser cleaning.
Defects of Laser Cleaning
At present, compared with traditional methods such as acid cleaning, sand blasting and dry ice cleaning, laser cleaning has the disadvantage of relatively high price.