Anodizing is a process in which aluminum and its alloys form a dense oxide film on aluminum products (anodes) under the action of applied current under the corresponding electrolyte and specific technological conditions. Its function is to overcome the defects of surface hardness and wear resistance of aluminum alloy, expand the application range and prolong the service life.
Surface treatment is a process of artificially forming a surface layer on the surface of the base material that is different from the mechanical, physical, and chemical properties of the base body. The purpose of surface treatment is to meet the requirements of corrosion resistance, wear resistance, decoration or other special functions of the product. For metal castings, the more commonly used surface treatment methods are mechanical grinding, chemical treatment, surface heat treatment, spray coating, and surface treatment is to clean, clean, deburr, degrease, and descale the surface of the workpiece.
