Application of laser welding machine in automobile industry

As we all know, our car industry requires a lot of scientific research personnel and countless times of development and testing, and it is also one of the most widely used occupations of our laser welding skills. Because now our laser welding machine has the advantages of high welding quality, perfect appearance, and high efficiency. Accompanied by the environmental protection regulations that the car industry has reached the sixth country, lightweight is now a trend, but together it cannot affect the overall safety and quality stability. Therefore, the laser welding machine has received more attention in our car industry and is also an important research direction. UV laser marking machine

Aluminum alloy is a kind of material that is widely used in cars, and the laser welding process has a unique advantage in the welding of aluminum alloy materials. The use of laser welding can complete the efficient maintenance of aluminum alloy materials. However, the use of laser welding in aluminum alloy processing also has certain disadvantages, which are determined by the thermal function of the aluminum alloy itself. Although the use of laser welding can complete the useful maintenance of aluminum alloy components, it cannot effectively prevent the splashing of the molten pool, the collapse of the small holes and other welding processes that are often found in the welding process. With the continuous rise of autonomous driving skills and new energy skills, more and more cars are beginning to be equipped with power batteries. Because laser welding is a non-contact, high-precision, and efficient welding method, it can weld and seal battery structural parts economically and quickly, and is widely used in battery manufacturing. In the entire power battery production, there are about 19 main component parts including batteries, modules and packs that need to be welded. Among them, 11 are now necessary to be completed by laser welding, 5 may be laser welding, and 3 are not. Use laser welding. In square shell batteries, laser welding is required for sealing nails, cover plate components, and sealing; in cylindrical batteries and modules, the parts that require laser welding include tabs, caps, bus bars, and so on. Five-axis marking machine

  In terms of module side plate welding, power battery modules often use aluminum alloy profiles and plates as the outer frame structure of the module. The quality of welding determines the rigidity of the overall structure of the module. Different welding heads and processes can be used to obtain different welding effects, and laser welding of side plates has also developed a variety of process methods. Generally, the porosity of the welding joint is 10%, the porosity of the dual-beam welding joint is 3%, and the porosity of the swing spot welding joint is only 1%. More and more advanced laser welding equipment and processes are continuously improving welding quality and reducing porosity.

  In addition, the cell sealing laser welding is an important process in battery production, which has a great impact on the yield of the battery. As the welding speed of the electric core is getting faster and faster, it is also necessary to ensure the welding seam consistency and other welding seam functions. A variety of laser welding sealing processes are derived from this. During the high-speed swing welding of the fiber laser, the weld seam is flat and smooth, and the consistency is good. The swing head has a corrective effect on the burst point as the welding frequency increases. laser marking machine