Mechanical polishing is polishing method by cutting, plastic deformation of the surface of the material to be polished after the convex part of the smooth surface , the general use of stone, wool wheel, sandpaper, etc., mainly to manual operation, special parts such as the surface of the rotor, Turntables and other auxiliary tools can be used, high surface quality requirements can be super-precision polishing method. Ultra-precision polishing is the use of special abrasive, working fluid containing abrasive, pressed on the workpiece surface machined, for high-speed rotary motion.The surface roughness Ra0.008μm can be achieved by this technique, which is the highest among the various polishing methods. Optical lens mold often use this method.

Electrolytic polishing is based on the workpiece being polished anode, insoluble metal cathode, and the two poles at the same time immersed in the electrolytic cell, through the DC ionization reaction to produce a selective anodic dissolution, so as to achieve the workpiece surface to remove the micro-burr and increased brightness effect .

Chemical polishing is based on chemical reagents on the sample surface uneven dissolution of the role of selective dissolution of the wear scar, a method of erosion leveling.