Our common derusting methods are: high-pressure water jet derusting, pickling derusting, ultrasonic derusting, sandblasting, laser rust, mechanical polishing and other methods. Derusting with sandblasting.
Sandblasting and rust removal technology refers to the use of abrasives of a certain size (in quartz sand, river sand, iron sand, iron pellets, etc.), sprayed on the surface of steel under a certain air pressure, using the hardness, impact and edges of the abrasive itself Compared with other rust removal methods, this method has higher rust removal quality and good surface size, and has higher rust removal efficiency for large equipment. But its disadvantage is that in actual work, especially in many important corrosion protection constructions, the requirements for rust removal on the surface of steel are relatively high. There are regulations to meet the first or second standard set by the Ministry of Chemical Industry, and only sandblasting can be used. Derusting can meet the requirements. Even sandblasting and rust removal have various shortcomings, and they are still widely used in corrosion resistance projects.
Laser rust removal technology is a kind of laser rust removal technology. Laser rust removal technology can only remove rust, but also remove oil, oxides, paint, stains, and glue.
Laser cleaning technology refers to the process of using high-energy laser beams to irradiate the surface to cause the dirt, rust or coating on the surface to evaporate and separate instantly to achieve a clean process. As a novel cleaning technology, laser cleaning technology has been applied in many cleaning fields, involving machinery industry, microelectronics industry and artwork protection.
Laser rust removal is an important application field of laser cleaning technology. Compared with traditional rust removal methods such as mechanical rust removal and chemical rust removal, it has the following characteristics: cleanliness far exceeds chemical cleaning processes; a wide range of applicable substrates; The working conditions of the empty laser can effectively remove rust on the basis of not damaging the surface of the substrate, and make the surface look like new. Laser rust removal equipment can be used multiple times and has low operating costs; laser cleaning technology is a “green” cleaning process that basically does not cause pollution to the environment.
Laser rust removal shows a good application prospect in equipment maintenance. However, there is no complete mathematical model that can describe it quantitatively, making laser cleaning more dependent on experiment and personal experience. In order to avoid the excessively long laser pulse irradiation time, which may cause damage to the substrate surface or excessively short, resulting in incomplete cleaning of serious residues, real-time monitoring of the cleaned surface is particularly important, which is related to the practical application of laser rust removal technology. The traditional spectrum analysis technology attenuation analysis technology (L IBS), laser induced fluorescence spectrum analysis technology (L IF), CCD optical imaging technology and other detection technologies, the equipment is expensive, the anti-interference ability is poor, and the signal processing is cumbersome.
The acoustic signal generated during the laser descaling process contains a large amount of information about the cleaning process, which can be used for real-time monitoring. The use of short-pulse lasers to perform real-time monitoring of the crackling sound generated during the cleaning process has been successfully applied. The expert system of control theory can predict the cleaning process and cleaning results, and estimate the possible damage to the substrate surface.
Laser rust removal technology is a kind of laser rust removal technology. Laser rust removal technology can only remove rust, but also remove oil, oxides, paint, stains, and glue.
