Application of laser welding head technology in automobile door

Application of laser welding head technology in automobile door

The door has a one-piece stamping type and a laser welding head welded door. There is a very obvious welding mark in the middle of the welding head welding door. The window frame of the door is welded by the welding head, and the lower part of the door is not the same. The whole; the one-piece door is that the upper and lower parts are a whole, and there is no trace of welding on the door.

Which one is better, the one-piece door or the laser-welded door? The advantage of the one-piece door is that it is formed by stamping as a whole. The overall strength is easier to control than the welded one, and the quality is better; secondly, the requirements for steel are higher, and the extension of the steel plate The property must be good enough, and the rigidity must be strong enough, and the amount of steel must be sufficient, otherwise there will be potential safety hazards. For welded doors, the welding position of the laser welding head does not necessarily cause the metal strength to decrease, but the local strength increases, but the toughness decreases.

The cost of steel consumption and other aspects will be lower, but it is difficult to control the quality of the welding head during the welding process. Is there a safety problem when using the welding head technology? In fact, many metal parts of automobiles use welding head welding technology, and even my country's Shenzhou rocket has the application of welding head technology. So the key to determining whether something is strong or not is not the solder joint, but the material. As a car, ensuring a high safety factor is not limited to whether the doors are integrally formed or laser-welded, but whether the materials used for rigid and strong B-pillars, roofs, and interior anti-collision ribs of the doors are made of Factors such as high-strength steel.

Due to the unique advantages of laser welding head welding technology, in automobile manufacturing and production, the frame, body, carriage, engine, automobile gear, roof, etc. are inseparable from welding head technology. Laser welding head welding has small deformation and weld quality. High, no solder and other characteristics, become the standard process of automotive parts manufacturing.