Welding is a necessary process method in modern machinery manufacturing, and it is widely used in automobile manufacturing. The six major engines, gearboxes, axles, frames, bodies and compartments of automobiles are inseparable from the application of welding technology. In the manufacture of auto parts, spot welding, projection welding, seam welding, roll projection welding, electrode arc welding, CO2 gas shielded welding, argon arc welding, gas welding, brazing, friction welding, electron beam welding and laser welding, etc. Among the welding methods, spot welding, gas shielded welding, and brazing have the characteristics of large production, high automation, high speed, low consumption, small welding deformation, and easy operation, so they are particularly suitable for automobile body sheet covering parts. , The most widely used in automobile production.

With the development of the automobile industry, the automobile body welding production line is gradually developing in the direction of full automation. In order to catch up with the international level, while increasing the output, efforts are required to improve the quality of automobile manufacturing. As we all know, the prerequisite for the realization of automation is that the manufacturing precision of parts must be very high. We hope that the welding deformation should be minimized and the appearance of the welding part should be clean. Therefore, the welding technology is required to be higher and higher. my country is facing the opportunities and challenges of joining the WTO. The promotion and application of new welding technologies play an extremely important role in the brand promotion of the automotive industry.