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Can laser cleaning really replace traditional industrial cleaning?
Daily industrial products and professional industrial products need to use one or more technologies and processes of surface treatment technology in order to achieve the function of product design or market demand. In the process of electroplating, phosphating, spraying, welding, packaging and integrated circuit assembly of industrial products, grease, dust, rust, residual solvents, adhesives and other dirt on the surface must be removed by cleaning to ensure the quality of the next process. Traditional cleaning methods include mechanical friction cleaning, chemical corrosion cleaning, liquid solid jet cleaning and high frequency ultrasonic cleaning, which have been widely used in industry.
Although the traditional cleaning methods have been widely used in the industrial cleaning industry, the application of traditional cleaning methods has been greatly restricted under the situation that the requirements of environmental protection regulations are more and more strict and the application of high-precision devices is more and more widely. Mechanical cleaning method has high cleanliness, but it is easy to damage the substrate. Chemical corrosion cleaning method belongs to stress-free cleaning, but the pollution is heavy. Especially when the dirt composition is complex, multiple cleaning agents must be selected for repeated cleaning to meet the requirements of surface cleanliness. Liquid solid jet cleaning has high flexibility, but the relative cost is high. It needs to consume a lot of water and solid impurities, and the later treatment of waste liquid is also complex. Although the cleaning effect of high-frequency ultrasonic cleaning method is good, it can't clean submicron particles with strong adhesion. The size of the cleaning tank limits the size range of the workpiece to be cleaned, and the drying after cleaning is also It's a big problem.
In 1969, S. M. beadair and Harold P. Smith of the space science laboratory and Department of nuclear energy engineering of the University of California, Berkeley, first proposed the concept of laser cleaning. The concept of laser cleaning was first proposed by the famous physicist Arthur Schawlow in the mid-1960s. Compared with the traditional cleaning methods, laser cleaning has the advantages of non-contact, good cleaning effect, high control precision, wide application range, low cost, high efficiency and no pollution.
Compared with chemical cleaning, laser cleaning does not need any chemical agents and cleaning fluid; compared with mechanical cleaning, it has no grinding, no stress, no consumables, and minimal damage to the matrix (cultural relics calligraphy and painting cleaning); laser can be guided by optical fiber transmission to clean the hard to reach parts, which has a wide range of applications (nuclear pipeline cleaning); it can also be applied to a wide range of objects, such as rust removal, paint removal and mud removal The technology has been applied in various fields (mold cleaning, aircraft coating cleaning). The initial investment of the laser cleaning system is high, but it can be used stably for a long time, with a service life of up to 10 years. The operation cost is low, the speed is fast, the efficiency is high, and the time is saved. In the long run, the cost of the laser cleaning system is lower than that of the traditional cleaning method. Therefore, laser cleaning, as a green and environmental protection cleaning method, is known as "the most potential cleaning technology in the 21st century". In the past 20 years, remarkable progress has been made in theoretical model, process research and equipment development of laser cleaning technology.
In the past two years, black horse enterprises with core independent intellectual property rights have also emerged in the domestic laser cleaning market. For example, Wuhan Coste New Technology Development Co., Ltd., which focuses on laser cleaning, has formed a series of mature laser cleaning products through years of laser cleaning technology and process accumulation, which is in the forefront of domestic peers, At the same time, compared with the international counterparts, it also has the industry competitiveness in terms of product technology series, performance, price and professional and rapid after-sales service.
With the development of science and technology, the application of laser cleaning technology has been paid more attention to under the background of vigorously promoting the transformation and upgrading of manufacturing industry. Compared with some traditional cleaning methods, laser cleaning has many advantages, such as no damage, grade precision control, energy saving and environmental protection, and will gradually ban some traditional cleaning methods in many fields.
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