According to the types and characteristics of automobile stamping parts, how to select materials

2019-09-11 09:06:46

When choosing materials, the metal materials with different mechanical properties are selected according to the stamping type and use characteristics of automobiles, so as to ensure product quality and save materials.

Usually, the following principles should be followed when choosing materials for automotive stamping parts:

A. Selected materials should first meet the performance requirements of automotive parts;

B. The selected materials should have better technological properties.

C. The selected materials should be economical.

A large number of cold stamping processes have been adopted in the production of automobile stamping parts, which are suitable for the needs of multi-variety and mass production of automobile stamping parts industry. In medium and heavy trucks, most of the panels, such as body panels, and some load-bearing and supporting parts, such as frame, carriage and other automotive parts, are automotive stamping parts. The steel used for cold stamping is mainly steel plate and strip, accounting for 72.6% of the total steel consumption of the vehicle. The cold stamping material is closely related to the production of automobile stamping parts. The quality of materials not only determines the performance of products, but also directly affects the process design of automobile stamping parts, and affects the quality, cost and service life of products. It is an important and complex task to select materials reasonably for production organization.

In stamping parts, the number of processes, generally speaking, refers to the same nature of the process, the number of repetitions. Therefore, on the premise of guaranteeing the quality of stamping parts, the number of working procedures should be reduced as far as possible, so as to improve the productivity of the workpiece and its economic benefits. Moreover, this requirement should be strictly enforced, and should not be sloppy or lax in order to ensure the above effect.

On stamping parts, is the strength of heat treatment lower than that before heat treatment?

The answer to this question is not necessarily because the key lies in the heat treatment process, mainly the heat treatment temperature. Generally speaking, the brittleness of metal will increase after cold stamping. Therefore, heat treatment or blackening is carried out to improve the plasticity of stamping parts. If it is a low temperature process, its strength will be reduced, but if it is annealed at high temperature, it will not have a great impact.