Drive shaft description

Working conditions
The drive shaft is subjected to alternating stresses such as torsion, shear, tension, compression, and impact, which can also cause torsional and bending vibrations of the drive shaft, resulting in additional stresses; Uneven stress distribution; There is sliding friction between the drive shaft neck and the bearing.
performance requirement
The main failure modes of the drive shaft are fatigue fracture and severe wear of the shaft neck. Therefore, the material should have high strength, certain impact toughness, sufficient bending and torsional fatigue strength and stiffness, and the journal surface should have high hardness and wear resistance.
Drive shaft material
Forged steel drive shaft: high-quality medium carbon steel and medium carbon alloy steel, such as 40, 45, 35Mn2, 40Cr, 45Cr, 35CrMo steel, etc;
Material selection
This type of material is medium carbon alloy steel, which is subjected to quenching and tempering (or normalizing) heat treatment to improve its processing performance. In recent years, a new type of steel, namely alloy quenched and tempered steel, has been widely used in high-power engines. This steel is refined by adding alloying elements such as Si, Cu, and Ti to strengthen the matrix and improve the strength of the steel.