Mechanism Of Chemical Polishing

- Aug 28, 2020-

In the process of chemical polishing, the passivation oxide film is formed on the surface of steel parts and the oxide film is dissolved continuously, and the former is stronger than the latter. Because of the conformity of the surface of the parts, the micro convex part of the surface dissolves preferentially, and the dissolution rate is higher than that of the concave part; moreover, the dissolution of the film and the formation of the film are always carried out at the same time, but the rate is different. As a result, the surface roughness of the iron and steel parts can be leveled, so as to obtain a smooth and bright surface. Polishing can fill surface pores, scratches and other surface defects, so as to improve fatigue resistance and corrosion resistance