What are the material regulations for automotive sheet metal processing? In automobile manufacturing and maintenance, the shape of many sheet metal structures is very complicated. In order to prevent the difficulty of sheet metal, sheet metal materials must have good performance regulations, namely:

1, sheet metal materials must have good plasticity. It must possess the ability to undergo prolonged deformation under external loading without failure. For cold-working parts, it is necessary to have better cold plasticity, such as automobile parts stamping parts; for hot-working parts, it is necessary to have better thermoplasticity, such as hot forging spring steel plates, hot rivets, etc.

2. Better malleability. Many automotive sheet metal parts are welded together by welding, oxygen welding, arc welding or gas shielded welding, so sheet metal parts must have good welding performance. This is particularly important in the repair of automobile digging, forging good material welding strength, cracking tendency is small.

3. Precision sheet metal parts processing for all components of the car, in line with the working conditions, should take into account the economy. Can use light metals, do not need rare metals; can use rare metals, never use precious metals. The life of automotive sheet metal components should be compatible with the life of other automotive components.

4. Better chemical stability. Most of the car covers work in the outdoor environment, often with water and steam contact, especially like the muffler, often at higher temperatures and etching gas work. This requires that the sheet metal parts must have good chemical stability, which requires corrosion resistance at room temperature, strong rust resistance, and no erosion or deformation at high temperature or sun exposure.

5. Better dimensional accuracy and internal quality of the plate. The dimensional accuracy and intrinsic quality of sheet metal processing. The impact is great, especially on the pressure mold.