Hello, automotive sheet metal is a method of automobile maintenance, also called cold working. If the appearance of the car body is damaged and deformed, the process of sheet metal is needed, and the car collision repair has developed from the initial "welding patch" to the secondary manufacturing and assembly of the car body. The repair of vehicles in collision accidents is no longer a simple beating in automotive sheet metal, and the quality of repair is not good. The 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. The stress characteristics convey the deformation trend, stress points and production technology of the car body. Such as welding process. On the basis of mastering these knowledge, maintenance personnel should also use advanced measuring tools and accurate three-dimensional measurement of the car body to judge the direct and indirect damage and deformation of the car body, formulate a complete car body repair plan, and cooperate with the correct car body repair plan to restore the key points of the car body to the original position. Automobile body repair technology: 1. Sheet metal is the preliminary plastic work of painting in automotive sheet metal. We compare the car body to the human body, and the perfect human body is like the model's body. For example, if a luxurious fashion is worn by a person with a broken limb, there is nothing to show and it will be eclipsed. Then, if you let a fashion model wear it, it will look dazzling and noble. Very simple, how can a twisted car body set off the brilliance of paint? Many painters think that sheet metal is not their job, I don't think so. Second, after the car body is corrected by sheet metal, there are still some defects that cannot be remedied by sheet metal work. Even if new parts are replaced, there will be imperfections. In order to be more perfect and accurate, we must use sculpture skills to make up for the defects. After the car is damaged due to deformation and other reasons, its flatness, wheel angle, lines and other parts need scraping and grinding. This formula shows that scraping ash = restoring body skin.