Usually what we call grease is actually a mixture of inorganic dirt and organic dirt. For example, engine grease in the automotive industry, the sealing problem of the engine room has not been fundamentally solved, causing the wind and dust rolled up by the car during driving to drill in from the lower part of the engine room and fly on the engine surface. In addition, the engine works at high temperature for a long time, and sometimes oil leakage occurs. If the engine is not cleaned and cared for for for a long time, thick grease will form on the engine surface. Over time, these corrosive substances will penetrate into the various components on the engine surface, causing metal parts to rust, plastic parts to age, and deformation. Therefore, engine external care is a very important and indispensable item in automotive cosmetic care.
The principle of laser cleaning is to use high-frequency and high-energy laser pulses to illuminate the surface of the workpiece. The coating layer can instantly absorb the focused laser energy, causing oil stains, rust spots or coatings on the surface to evaporate or peel off instantly. It can effectively remove surface attachments or surface coatings at high speed. The cleaning method, while the laser pulse with short action time will not damage the metal substrate under appropriate parameters. It can be used not only to clean engine grease in the automotive industry, but also in the rail industry, mold industry, electronics industry, etc., to remove the grease attached to it, and the cleaning effect is obvious without harming the substrate.
Laser cleaning of oil stains has obvious advantages:
1. Laser cleaning is a "green" cleaning method that does not require the use of any chemicals or cleaning liquids. The cleaned waste is basically solid powder, which is small in size, easy to store, and recyclable. It can easily solve the environmental pollution problem caused by chemical cleaning.
2. The traditional cleaning method is often contact cleaning, which exerts a mechanical force on the surface of the cleaned object, damaging the surface of the object or the cleaning medium adhering to the surface of the cleaned object, which cannot be removed, resulting in secondary pollution. The non-abrasive and non-contact nature of laser cleaning makes these problems easy to solve.
3. Lasers can be transmitted through optical fibers and cooperate with robotic hands and robots to easily achieve long-distance operation, and can clean parts that are not easily accessible by traditional methods. This can ensure the safety of personnel in some dangerous places.
4. Laser cleaning can remove various types of contaminants on the surface of various materials, achieving a cleanliness that cannot be achieved by conventional cleaning. And it can also selectively clean the contaminants on the surface of the material without damaging the surface of the material;
5. Laser cleaning is efficient and saves time.
