What are the material requirements of an automobile driveshaft?

What are the material requirements of an automobile driveshaft?

Automobile drive shaft and drive shaft suspension material should be medium carbon steel.

1. Low carbon steel has good plasticity, but low strength and hardness, good weldability, can be cold stamping processing, can be used to manufacture all kinds of standard parts, bushings, containers, etc.

2. High carbon steel plastic poor, high hardness, poor fatigue strength, poor machinability, resulting in poor toughness of shaft parts, easy to fracture. This kind of steel is suitable for the manufacture of electrostatic bearing wear-resistant parts, such as heavy rail, roll, etc. After proper heat treatment, can also be made into spring, wire rope, and other parts that need high hardness, high wear resistance.

3. The main function of the automobile drive shaft is to support the rotating body and transfer power. The working conditions generally bear alternating torque and tension and compression load, and the journal and key components bear large friction and wear. The main failure forms are fracture and local excessive wear, and the fracture forms include fatigue fracture and overload fracture.

Therefore, in the selection of materials, the material is required to have sufficient strength, stiffness, and toughness, with good wear resistance, high fatigue strength, and good machinability. That is to say, the spindle is required to have good comprehensive mechanical properties.

4. After proper heat treatment (quenching and tempering, surface hardening, carburizing, etc.) of medium carbon steel, better core toughness, surface wear resistance, and other comprehensive mechanical properties can be obtained.