When the car is used for a long time, parts may be damaged, and some auto parts need to be replaced at this time.

The material and manufacturing process (process) used in the automobile chassis parts have a great influence on the service life of the chassis.

The selection of part materials is related to a number of factors, including the conditions of the parts, the shape and size required, the process, the material and manufacturing aspects, and the economic projections.

The use of the car proves that the main reason for the damage is the loss of friction on the friction surface due to the direct sliding friction between the parts and the fatigue of the surface of the material. The sliding friction and the desire to reduce the loss caused by hard wear-resistant materials with thinner in part on the surface to achieve, but to reduce the loss caused by the surface fatigue needs a much larger than the first layer thickness of the hard surface material situation.