What are the material selection requirements for metal stamping parts of auto parts?

2022-04-05 09:16:43

Metal stamping parts of auto parts are a very important part of auto structure. In medium and heavy vehicles, most covering parts such as body outer plate, and some load-bearing and supporting parts, such as frame, carriage and other auto parts are metal stamping parts of auto parts. What aspects should be done when selecting materials for this product?

1、 When selecting materials, firstly, metal materials with different mechanical properties are selected according to the type and use characteristics of automobile stamping, so as to ensure product quality and save materials. The following principles should be followed when selecting the materials of metal stamping parts of auto parts: the selected materials should first meet the service performance requirements of auto parts, have better process performance and better economy.

2、 The use and working conditions of each specific auto part of auto parts hardware stamping parts are different, and the load borne by auto parts is different, so the requirements for material selection are also very different:

1. Requirements for material properties of car parts: the shape of car parts is not too complex, and most of them adopt roll forming process, which has certain requirements for the formability, rigidity, corrosion resistance and weldability of materials. High strength steel plates with good formability and weldability are generally selected. Generally, high-strength steel plate and ultra-fine grain steel with strength grade of 300-600mpa are used.

2. Requirements for material properties of automobile frame parts: frame, middle plate of carriage and some parts used for support and connection are important bearing parts. Most of them adopt die forming process, which requires materials to have high strength and good plasticity, fatigue durability, collision energy absorption capacity and weldability. High strength steel plate, ultra-fine grain steel plate and ultra-high strength steel plate with good formability are generally selected.

3. Requirements for material properties of automobile cab parts: most automobile cab parts are covering parts with complex shape and complex forming, but the force is small. The forming performance of materials has become the main contradiction by using die forming process. Therefore, materials are required to have formability, tension rigidity, extensibility, concave resistance, corrosion resistance and weldability. When designing automobile sheet metal products, the variety of steel plate is usually selected according to the stress condition and shape complexity of sheet metal parts. Generally, low-carbon cold-rolled steel sheet and ultra-low-carbon cold-rolled steel sheet with excellent drawing performance are selected.

Metal stamping parts of auto parts are widely used in industry and life. The quality of materials not only determines the performance of products, but also directly affects the process design of metal stamping parts of auto parts, and affects the quality, cost, service life and production organization of products. Therefore, reasonable selection of materials is an important and complex work.