Automotive sheet metal is a processing method of automobile maintenance, also called cold working. To put it bluntly, if the appearance of the car body is damaged and deformed, the sheet metal process is needed. Automobile collision repair has developed from the initial "welding repair" to the secondary manufacturing and assembly of the car body.
The repair of vehicles in collision accidents is no longer a simple automotive sheet metal knock, and the quality of repair can not be observed only by naked eyes. Maintenance personnel should not only know the technical parameters and dimensions of the car body, but also master the material characteristics of the car body.
Extended data:
In automobile manufacturing and maintenance, the shapes of many sheet metal structures are very complicated. In order to avoid the difficulty of sheet metal, sheet metal materials must have good technological performance requirements, namely:
Sheet metal must have good plasticity and the ability to produce permanent deformation without being destroyed under the action of external force. For cold-worked parts, good cold plasticity is required, such as stamping parts of automobile parts; For hot working parts, good thermoplasticity is required, such as hot forgings, spring steel plates, hot rivets, etc.
Good weldability. Many automobile sheet metal parts are welded together by spot welding, oxygen welding, arc welding or gas shielded welding, so it is required that the sheet metal parts must have good weldability. This is especially important in automobile maintenance and repair. Materials with good weldability have high welding strength and low cracking tendency.