News     |      2022-05-20 17:56

natural oxidation

The oxide film is thin, with a thickness of about 0.5 to 4 microns, and is porous, soft, and has good adsorption properties. It can be used as the bottom layer of organic coatings, but its wear resistance and corrosion resistance are not as good as anodic oxide films;

electrochemical oxidation

The thickness of the oxide film is about 5 to 20 microns (the thickness of the hard anodized film can reach 60 to 200 microns). It has high hardness, good heat resistance and insulation, and its corrosion resistance is higher than that of chemical oxide films. good adsorption capacity.

chemical oxidation

The chemical oxidation treatment equipment of aluminum and aluminum alloys is simple, easy to operate, high production efficiency, does not consume electricity, has a wide range of applications, and is not limited by the size and shape of parts.

The process of chemical oxidation of aluminum and aluminum alloys can be divided into two categories: alkaline oxidation and acid oxidation according to their solution properties.

According to the film properties, it can be divided into: oxide film, phosphate film, chromate film, chromate-phosphate film.