Special stamping forming technology involved in the production of automotive stamping parts

As modern automobile stamping parts, their technical requirements are developing in the direction of complex structure, increased block size, more parts related to the side, increased load-bearing capacity, and strict internal stress restrictions. Stamping technology has played a catalytic role. The so-called special stamping forming technology refers to hydroforming, precision forming, explosive forming, spinning forming, dieless forming, laser forming and electromagnetic forming technology, etc. The automobile stamping parts made by them are more excellent. In terms of hydraulic internal high pressure forming technology, it is more advantageous than other stamping forming technologies. When making automobile stamping parts, large and complex three-dimensional geometrical workpieces such as axles, roof panels, door frames, etc. can be processed at one time during the hydraulic internal high pressure forming process; and because of the cooling effect of the liquid during the forming process, the workpiece It is hardened by cold work to obtain higher strength of the workpiece than the general stamping process, which allows the use of thinner plates and achieves the lightweight goal of automotive stamping parts. Due to the hydraulic internal high-pressure forming process of automobile stamping parts, the outer surface of the sheet is only in contact with the pressure liquid, the pressurization process is relatively gentle, and the parts are formed uniformly, so a symmetrical pressure distribution can be obtained, and a much better smoothness can be obtained The outer surface. In addition, the production of automotive stamping parts through hydraulic internal high pressure forming technology not only saves costs, but also shortens time, which can achieve mass production of products. In addition, electromagnetic forming technology is also a special forming process used in automobile stamping parts. It is more prominent in processing forming speed, environmental protection and energy saving.