The non-cutting processing technology is safe and convenient, and can accurately control the accuracy. Several advantages:

     1. Improve the surface roughness, which can basically reach Ra≤0.08µm.

     2. Correct the roundness, the ellipticity can be ≤0.01mm.

     3. Improve the surface hardness, eliminate the stress deformation, and increase the hardness by HV≥4°

     4. There is a residual stress layer after processing, which improves the fatigue strength by 30%.

     5. Improve the quality of the fit, reduce wear and extend the service life of the parts, but the processing cost of the parts is reduced.