1. Improve the appearance roughness, the roughness can basically reach Ra≤0.08µm.
2. Correct roundness and ellipticity ≤0.01mm.
3. Improve appearance hardness, eliminate stress deformation, increase hardness HV≥4 °
4. After processing, there is a residual stress layer, which improves fatigue strength by 30%.
5. Improve the quality of cooperation, reduce wear and prolong the service life of parts, but the processing cost of parts has decreased.