1. Due to the rapid development of automotive materials, automotive sheet metal has also become a technology for understanding, repairing and processing a large number of materials, not only sheet metal, but also plastics, glass, nylon, unsaturated resin (FRP), metal special-shaped pipes and rubber. 2. Due to the high standard and comprehensive performance requirements of the automobile itself, the automobile is designed to be assembled or welded by metal parts with different thicknesses of 0.5mm (or lower) -5.0 mm (or higher), which requires automotive sheet metal to accurately judge and repair the plates with different thicknesses on the same part (most automobile parts assemblies are assembled by multiple sub-parts).

Cold working metal plate: mainly cold and hot forming and riveting metal plate.

The work mainly includes: (1) making samples and patterns; ⑵ Use marking tools and templates to mark, punch and set out the workpiece; (3) leveling, blanking, rolling, biting or brazing and riveting the thin plate; (4) splicing and adjusting the metal components by riveting mechanical equipment; 5] make conical cylinder, four-corner barrel, equal-diameter tee, right-angle bending head, etc. (6) heating the workpiece with a heating furnace to form a finished product; Once, cooperate with the welder to point the welding workpiece; (8) Cold bending and hot bending forming and assembling of plates to correct biting and deformation of welded workpieces; Levies necessary general operations for clamping and welding; ⑽ Maintain mechanical equipment, tools, fixtures, measuring tools, molds, clamping tools and templates for cold-working sheet metal, and eliminate common faults in operation.

It can be seen that automotive sheet metal contains the technology of cold working sheet metal.