Anodic oxidation, electrochemical oxidation of metals or alloys. Aluminum and its alloys form a layer of oxide film on aluminum products (anodes) under the corresponding electrolyte and specific process conditions due to the effect of the applied current. Anode oxidation, if not specified, usually refers to anode oxidation of sulfate.

Anodic oxidation is an electrolytic oxidation process in which the surface of aluminum and aluminum alloy is usually converted into a layer of oxide film, which is protective, decorative and other functional. The anode oxidation of aluminum from this definition includes only the part of the process of generating the anode oxide film.

The anode oxidation treatment of aluminum profile is actually a method of surface treatment of aluminum profile. Is the surface of aluminum profile to form a layer of oxide film, elegant and beautiful and corrosion - resistant.

In order to overcome the defects of aluminum alloy surface hardness, wear resistance and so on, expand the scope of application and extend the service life, surface treatment technology has become an indispensable part of aluminum alloy use. Metal oxide films change the state and performance of the surface, such as surface coloring, improve corrosion resistance, enhance wear resistance and hardness, protect metal surfaces.