The explanation is as follows:

1 First of all, we must understand the definition of sheet metal: there is no complete definition of sheet metal processing technology at present. According to a definition in foreign professional journals, it can be defined as: sheet metal is a comprehensive cold working process for metal plates (usually less than 6mm), including cutting, punching, cutting, compounding, folding, riveting, splicing and forming (such as automobile body). Its remarkable feature is that the thickness of the same part is consistent.

2. Generally speaking, the deformation of sheet metal will definitely have an impact on the car. When using the shaper, it must be polished, which will affect the thickness of the sheet metal, and the antirust treatment behind the sheet metal surface will not be burned. Even if putty is scraped on the surface of sheet metal, its antirust strength is not as good as before. Another common putty is water mill, after which the innermost water will not be completely dried.

Extended data:

workflow

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: the automobile maintenance industry can be basically divided into mechanical repairman, electrical repairman, sheet metal repairman and painting repairman, except for beauty and special repair industry.

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), automobile glass, vehicle lamps, interior and exterior decorative parts and handles, seats and accessories, vehicle lock mechanism, window sealing and lifting mechanism, door and front and rear sail covers connecting and moving mechanism. 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.

Baidu Encyclopedia: automotive sheet metal