Introduction to hydraulic cylinder

Hydraulic cylinders, it is a pressure finishing, using examiner cold metal features, rolling tool put some pressure on the surface of the workpiece, workpiece surface plastic flow, fill in the residues of the original Valley troughs and reducing the surface roughness is reached. As a result of plastic deformation of rolling surface, cold hardening and grain surface layer thinning, forming dense fibrous, and formed a layer of residual stress, hardness and strength, thereby improving the surface abrasion resistance, corrosion resistance and supporting it.