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 characteristics of the car body material, the transmission of force characteristics, the deformation trend and stress points of the car body and the production technology of the car body such as welding technology. On the basis of mastering this 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 and the hidden dangers caused by the deformation of the car body, formulate a complete car body repair plan, and then cooperate with correct maintenance technology and accurate three-dimensional data of key points to restore the car body to its original position and restore the damaged car body to the factory state.
Main processes of sheet metal processing: The main processes of sheet metal processing can be roughly divided into:
1: body disassembly and assembly
2. Body correction
3. Body maintenance
And each different process can be subdivided into several processes. In-depth explanation, we must mention two concepts.
1: automobile type of work
2. Body
1: The automobile maintenance industry can be basically divided into mechanical repairmen, electrical repairmen, sheet metal repairmen and painting repairmen, and other accessories, but the beauty and special maintenance industries are not included.
For the division of automobile body, it means to remove the whole circuit computer system, the whole engine-driven brake steering system and paint. Then all that's left is the body.
2. Body assembly (this is a general term for accessories) includes: body sheet metal parts (metal parts), car glass, car lights, interior and exterior decorative parts and handles, seats and accessories, car lock mechanism, window sealing and lifting mechanism, doors and front and rear sail covers. That is to say, when your car has broken glass, broken door locks, damaged decorative parts and other problems, remember that you are looking for automotive sheet metal instead of other jobs!
Because the car is a high-precision whole. Moreover, electrical accessories and mechanical accessories should be attached to the corresponding positions of the car body with high precision and low error. Even the straightness and curvature of car paint (which greatly affects the beauty of car body) are highly dependent on the error value of car body sheet metal. Therefore, sheet metal body and its repair have become a purely manual work in the automobile industry without hard standards, automatic tools and intuitive teaching.
In short, automotive sheet metal is to completely repair the broken and damaged car body!
A detailed description of the sheet metal worker's workflow (for example, a car that crashed and caused a rollover accident)
1: Dismantle the whole vehicle (remove all possible sheet metal parts or parts to be painted).
2. Car body repair (replacement, stretching, welding and repair of sunken iron plates, bent beam frames, dimensional displacement and other damages caused by impact or overturning).
3. Repair of sheet metal parts (all damaged sheet metal parts that should be repaired should be bonded and welded to restore their appearance and size).
4. Yan Xiu of sheet metal parts (resetting repaired sheet metal parts, such as car door lights, displaced mechanical appliances and other non-sheet metal parts requires superb skills and unremitting patience to achieve accurate and beautiful installation).
5. Vehicle installation (after painting, install and fix all sheet metal parts and test all movable sheet metal parts).
6: End of delivery