As the world's leading manufacturing country, China has made great strides on the road to industrialization and achieved great success, while also leading to serious environmental degradation and industrial pollution. In recent years, China's environmental protection ** regulation requirements have become increasingly stringent, resulting in the closure of some enterprises for renovation. The one-size-fits-all environmental storm has had some impact on the economy, and changing the traditional pollution production model is the key. With the progress of technology, people gradually explore a variety of technologies that are beneficial to environmental protection, laser cleaning technology is one of them. Laser cleaning technology is an emerging application in the last decade of workpiece surface cleaning technology, it is gradually replacing the traditional cleaning process in many fields with its own advantages and irreplaceability.
Traditional cleaning methods include mechanical cleaning method, chemical cleaning method and ultrasonic cleaning method, mechanical cleaning method that uses scraping, rubbing, brushing, sandblasting and other mechanical means to remove surface dirt; wet chemical cleaning method is the use of organic cleaning agents, through the spray, drenching, soaking or high-frequency vibration and other measures to remove surface adhesion; ultrasonic cleaning method is to be treated parts into the cleaning agent, the use of ultrasound generated by the vibration effect to remove Dirt. At present, these three cleaning methods still dominate the cleaning market in China, but all will produce pollutants to varying degrees, in environmental protection and high precision requirements of its application is greatly restricted.
Laser cleaning technology is the use of high-energy high-frequency laser beam irradiation workpiece surface, so that the surface of the dirt, rust spots or coatings occur instantaneous evaporation or stripping, high-speed effective removal of cleaning object surface adhesion or surface coating, so as to achieve a clean laser process. The laser is characterized by high directionality, monochromaticity, high coherence and high brightness. By focusing and Q-switching of the lens, the energy can be concentrated into a small spatial range and time frame.
Laser cleaning advantages
Environmental advantages
Laser cleaning is a "green" cleaning method, without the use of any chemicals and cleaning fluids, cleaning down the waste is basically a solid powder, small size, easy to store, recyclable, no photochemical reaction, will not produce pollution. Can easily solve the problem of environmental pollution brought about by chemical cleaning. Often an extractor fan can solve the problem of waste generated by cleaning.
Effect advantage
Traditional cleaning methods are often contact cleaning, cleaning the surface of the object has a mechanical force, damage to the surface of the object or cleaning media attached to the surface of the object to be cleaned, can not be removed, resulting in secondary pollution, laser cleaning of non-abrasive and non-contact, non-thermal effect will not damage the substrate, so that these problems are solved.
Control advantages
Laser can be transmitted through optical fiber, with robot hands and robots, easy to achieve long-distance operation, can clean the traditional method is not easy to reach the part, which can ensure the safety of personnel in the use of some dangerous places.
Convenient advantage
Laser cleaning can remove various types of contaminants on the surface of various materials, to achieve the cleanliness of conventional cleaning can not be achieved. And also in the case of no damage to the surface of the material can be selectively clean the surface of the material pollutants.
Cost advantage
Laser cleaning speed, high efficiency, saving time; purchase laser cleaning system although the one-time investment is high, but the cleaning system can be used for long-term stability, low operating costs, more importantly, can be easily automated operation.
