With the continuous development of lasers, laser welding machines are increasingly showcasing their skills in the field of sheet metal welding, such as laser welding machines using spot welding processes to weld aluminized steel. What should be paid attention to when welding aluminized steel plates? What treatment does the aluminized steel plate need to undergo in order to achieve the purpose of welding? The treated sheet metal profiles can only be applied in the next steps after going through that process.
When a laser welding machine uses a spot welding process to process aluminized steel plates, it requires higher currents and closer monitoring of the welding process than cold-rolled steel plates. At the same time, electrode maintenance is very important, and it should be corrected at any time to prevent the deformation of the contact surface. Therefore, in the manufacture of aluminized steel, non-metallic elements are doped. The aluminized steel plate is an aluminum-silicon alloy coated steel plate, in which the aluminum content is 90% and the silicon is 10%. The coating of aluminized steel plate has a higher melting point than that of galvanized steel plate, and it is not easy to flow. The melting area is small, so it is not necessary to use a current as large as that of welding galvanized steel plate. At the same time, there is very little harmful smoke generated during the welding process, which can effectively protect
The spot welding process of laser welding machine has completed the welding of aluminized steel, but after welding, there is a layer of gray-black material at the weld. This layer of gray material is left by the reaction of silicon. To treat this residue, it can be cleaned with strong acidic substances, but it goes against the concept of energy conservation and environmental protection. Therefore, the use of new, green cleaning methods is the best way.
It is said that the laser is all-round, it can not only weld metal but also do cleaning equipment. Using laser cleaning equipment to clean the weld can not only clean up the residue and not hurt the base layer, but also a green cleaning method.
The cleaning process of laser cleaning equipment depends on the characteristics of the optical pulse generated by the laser, based on the photophysical reaction caused by the interaction between the high-intensity beam of light, the short-pulse laser and the pollution layer.
Laser cleaning is a "green" cleaning method that does not require the use of any chemical agents and 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 problems caused by chemical cleaning. The non-abrasive and non-contact nature of laser cleaning makes these problems easy to solve. Laser can be transmitted through optical fibers and cooperate with robots to easily achieve long-distance operation. It can clean parts that are not easy to reach by traditional methods and ensure the safety of personnel. Laser cleaning can remove various contaminants on the surface of various materials, achieving cleanliness that cannot be achieved by conventional cleaning. It can also selectively clean the contaminants on the surface of the material without damaging the surface of the material.
