What are the requirements for automotive sheet metal materials?

Release time:

2023-01-13

In automobile manufacturing and maintenance, the shape of many sheet metal structural parts is very complex. In order to avoid the difficulties of sheet metal, sheet metal materials must have good process performance requirements, namely:

What are the requirements for automotive sheet metal materials?

In automobile manufacturing and maintenance, the shape of many sheet metal structural parts is very complex. In order to avoid the difficulties of sheet metal, sheet metal materials must have good process performance requirements, namely:

1 Sheet metal materials must have good plasticity. The ability to permanently deform under external forces without being destroyed. For cold working parts, there should be good cold plasticity, such as stamping parts of automobile; For hot parts, there should be good thermoplasticity, such as hot forging spring steel plate, hot rivet and so on.

2. Good weldability. Many auto sheet metal parts are fused together by spot welding, oxygen welding, arc welding or gas shielded welding, so it is required that sheet metal parts must have good welding performance. This point is especially important in the repair and repair of automobiles. Materials with good weldability have high welding strength and small cracking tendency.

3 Low price, economic and practical. For any component of the car, economy should be taken into account if working conditions are met. Where ferrous metals are used, non-ferrous metals are not used; Where non-ferrous metals can be used, precious metals must not be used. The life of automobile sheet metal members should be commensurate with the life of other automobile members.

4 Good chemical stability. Automobile covering parts are mostly working in the open environment, often in contact with water and steam, especially like the muffler, often in high temperature and corrosive gas. This requires that sheet metal parts must have good chemical stability, which not only requires corrosion resistance and rust prevention at room temperature, but also requires that they are not corroded and deformed under high temperature or solar exposure.

5 Good dimensional accuracy and intrinsic quality of the plate. The dimensional accuracy and intrinsic quality of sheet metal processing shadow. Very loud, especially on the molded parts of the greater impact.

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