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Application of Aluminum Anodic Oxidation Process in Industry

Release time:

2022-05-16 15:54

Application of Aluminum Anodic Oxidation Process in Industry

1. to prevent product corrosion

The film obtained by anodic oxidation has good stability in the atmosphere after proper sealing treatment. Whether it is from sulfuric acid solution, oxalic acid solution or chromic acid solution in the normal process of the oxide film, its corrosion resistance is very good, such as daily aluminum pot, pot, washing machine liner, etc.

2. protection and decoration

On the oxide film with high transparency, the oxide film has the characteristics of adsorbing various organic dyes or inorganic pigments, and various bright colors and patterns can be obtained on the oxide film. In addition, many new technologies have appeared in recent years, such as primary oxidation and multiple coloring, fireworks patterns, wood grain patterns, oxidation offset transfer printing, porcelain oxidation, etc., making the appearance of aluminum more beautiful and pleasing to the eye. This color film is not only a decorative layer, but also an anti-corrosion layer, such as lighters, gold pens and handicrafts.

3. as hard wear-resistant layer

In sulfuric acid or oxalic acid solution can be by adjusting the process conditions of anodic oxidation to obtain thick and hard film, the use of the film's pores and absorption properties to store the selective oil, effectively applied to the working conditions of friction, and has the characteristics of lubrication and wear resistance, such as automobile and tractor engine cylinders, pistons, etc.

4. as an electrically insulating layer

The oxide film of aluminum and its alloys has the characteristics of high resistance, and the thickness of the film is proportional to the resistance. This feature has certain practical significance as electrical insulation and can be used as the dielectric of capacitors.

5. as the bottom layer for painting and electroplating

Because the oxide film layer has porous and good adsorption capacity, and paint film and organic film has a good binding force, can be used as the bottom of the paint. The phosphoric acid anodized film can be used as the bottom layer for electroplating on aluminum.

6. for modern architecture

The anodic oxide film has high abrasion resistance and good light resistance, and it does not fade in the atmosphere after more than 20 years of sun exposure.

anodic oxidation treatmentThe surface of aluminum and its alloys can obtain a dense film layer which is much thicker than the natural oxide film, so that the metal surface gloss can remain unchanged for a long time, the corrosion resistance and mechanical strength are improved, and the decorative appearance can be obtained by dyeing.

Baianmei focuses on the research of aluminum anodizing dyes and additives, which has been widely concerned and praised by the industry.