Traditional cleaning industrial equipment has various cleaning methods, most of which are cleaning by chemical agents and mechanical methods. Today, as my country's environmental protection regulations are becoming more and more stringent and people's environmental protection and safety awareness are increasing, the types of chemicals that can be used in industrial production cleaning will become fewer and fewer. How to find a cleaner and non-destructive cleaning method is a problem we have to consider. Laser cleaning has the characteristics of no grinding, non-contact, low thermal effect and suitable for objects of various materials, and is considered to be the most reliable and effective solution.
What is the working principle of the laser cleaning machine? In which industries can it be applied? Among the contaminants on the surface of the workpiece, the combination between the surface attachments of the workpiece and the surface is mainly due to the existence of the following forces: covalent bonds, double dipoles, capillary action, hydrogen bonds, adsorption and electrostatic forces. Among them, capillary force, adsorption and electrostatic force are the most difficult to destroy, and laser cleaning technology is to overcome these forces.
These adsorption forces are much greater than gravity (by several orders of magnitude) and are related to the particle diameter d. The adsorption force shows a very slow linear decay trend as the particle radius decreases, and the particle mass m is proportional to the cube of the diameter. According to Newton's law, F=ma. When the particle size becomes smaller, the acceleration provided by the adsorption force increases rapidly. Therefore, the smaller the particle size, the greater the acceleration required to remove it. This is why conventional cleaning technology is difficult to remove surface attachments of objects with very small diameters.
Prospects for laser cleaning technology: The emergence of laser cleaning technology has opened up a new field for the industrial application of laser technology. Its development in the fields of microelectronics, construction, nuclear power plants, automobile manufacturing, medical treatment, and cultural relics protection is in full swing, and the application market prospects are broad. my country's application in the field of large-scale laser processing technology has begun to take shape, but its application in steel rust removal and mold decontamination is still blank, and the market for laser cleaning technology in the fields of automobile manufacturing and construction is still under development. Although it is difficult to estimate the application market share of laser cleaning technology in detail at present, many of the above-mentioned fields are pillar industries of the national economy. After the laser cleaning technology is added, the economic and social benefits generated are very considerable. It is entirely possible to use my country's existing laser technology conditions to develop supporting laser cleaning equipment and make it practical and industrialized in a short period of time, which is also of great significance to promoting the development of high-tech industries.
