In the process of electroplating, phosphating, spraying, welding, packaging and integrated circuit assembly of industrial products, the grease, dust, rust scale, residual solvent, binder and other dirt on the surface must be removed to ensure the quality of the next process. At present, the cleaning methods widely used in the cleaning industry include mechanical cleaning, chemical cleaning and ultrasonic cleaning, but their application is greatly limited under the constraints of environmental protection and the requirements of high-precision market.
Mechanical methods cannot meet the requirements of high-definition cleanliness cleaning; Chemical cleaning methods are easy to cause environmental pollution, and the cleanliness obtained is also very limited; Especially when the dirt composition is complex, a variety of cleaning agents must be selected for repeated cleaning to meet the requirements of surface cleanliness; Although the ultrasonic cleaning method has good cleaning effect, it is powerless to clean submicron dirt particles. The size of the cleaning tank limits the scope and complexity of the processed parts, and the drying of the workpiece after cleaning is also a big problem.
Modern manufacturing needs the support of strong surface treatment technology. China’s surface treatment industry has backward production capacity and needs advanced processes and technologies to replace and fill, which is an important challenge in the process of China’s manufacturing industry from big to strong. The challenges faced by the surface engineering industry not only bring strong pressure to the industry, but also bring great opportunities.
Laser cleaning technology is a new cleaning technology developed rapidly in recent ten years. It is gradually replacing the traditional surface treatment cleaning technology in many fields because of its many advantages. It can adapt to the cleaning of all kinds of surface dirt, has little environmental pollution, and can not damage the matrix.
At present, this method has become the supplement and extension of traditional cleaning methods, and has broad application prospects because of its inherent advantages. Compared with the traditional cleaning process, the characteristics of laser cleaning technology are: it is a “dry” cleaning, does not need cleaning solution or other chemical solutions, and the cleanliness is much higher than that of chemical cleaning process; The scope of dirt removal and applicable base materials are very wide.
By adjusting the laser process parameters, the pollutants can be effectively removed and the surface can be restored as new without damaging the substrate surface; Laser cleaning can easily realize automatic operation and reduce labor force; Laser cleaning has high efficiency and saves time; Laser decontamination equipment can be used for a long time with low operation cost; Laser cleaning technology is a “green” cleaning process. The waste material eliminated is solid powder, small volume, easy to store, and basically does not pollute the environment.
