Automotive Knowledge Manual for Analysis of Automotive Laser Welding Technology

In the manufacturer's brochure, the welding technology used in the vehicle may be described. The laser welding repeatedly emphasized by Volkswagen has become a familiar production technology. What is the magic of this technology? Today we will solve this question for everyone.

As the name implies, laser welding is also a type of welding technology. It uses a high temperature generated by a laser beam to fuse multiple pieces of metal together. At present, this technology has been widely used in the field of automobile manufacturing.

Laser welding is non-contact welding, and the material does not need to be pressurized during operation, so the loss and deformation of the machine can be minimized. In addition, the diameter of the laser beam can be focused to a very small extent, and the heat generated thereby only affects the surface of a relatively small material, so that material deformation caused by heat conduction is also minimized.

The biggest advantage of laser welding over traditional welding technology is that it can weld different materials of metal and combine heterogeneous materials. For the automotive industry, it is often necessary to weld steel of different strengths and materials. The advantage of laser welding has naturally become one of the reasons for the choice of the automotive industry.

In the late 1980s, kilowatt-class lasers were successfully applied to industrial production. Today, laser welding production lines have appeared on the large-scale automobile manufacturing industry and become one of the outstanding achievements of the automobile manufacturing industry. Germany's Audi, Mercedes-Benz, Volkswagen, Sweden's Volvo and other European car manufacturers took the lead in laser welding of roof, body, side frame and other sheet metal welding in the early 1980s. In the 1990s, GM, Ford and Chrysler actually The introduction of laser welding into automobile manufacturing, although starting late, has developed rapidly. Italy Fiat uses laser welding in the welding assembly of most steel plate components. Nissan, Honda and Toyota Motor Corporation of Japan use laser welding and cutting technology in the manufacture of body panels. High-strength steel laser welding assemblies have excellent performance. It is used more and more in the manufacture of automobile bodies.