Gears surface after the shots blasting process will have better finish and also higher mechanical characters.

Shot blasting process is an important method to improve the bending fatigue strength and contact fatigue strength of gear teeth, and it is an important way to improve gear anti-seizure ability and increase gear life.

In the shot blasting process, the surface layer of the material is subjected to the violent impact of the steel shot to produce a deformation hardened layer, which will lead to two effects: one is the structure of the sub-grain refinement, the dislocation density increases, and the lattice distortion is aggravated; the other is the introduction of high The macroscopic residual compressive stress. In addition, the surface roughness is increased due to the impact of the steel shot, which will make the sharp tool marks produced during cutting tend to be smooth. These changes will significantly improve the fatigue resistance and stress corrosion resistance of the material, thereby significantly improving the life of the gear. Remove the tiny burrs of the parts, increase the surface hardness of the metal parts, and eliminate the stress.