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Anodizing process of aluminum profile
Jan 30, 2018

The chemical properties of aluminum are active. In the dry air, a dense oxide film of about 5nm is formed on the surface of aluminum, so that the aluminum will not be further oxidized and can withstand water.

The mixture of aluminum powder and air is very easy to burn.

Molten aluminum can react violently to water, and many metal oxides can be reduced to corresponding metals at high temperature.

Aluminum is amphoteric, which is easy to dissolve in strong alkali and soluble in dilute acid.

Aluminum has a good corrosion resistance in the atmosphere, but the strength of pure aluminum is low. Only through alloying, all kinds of aluminum alloys can be obtained for the use of structural materials.


Anodizing process, can make the product to increase the corrosion resistance, hardness and wear resistance (the aluminum matrix hardness is HV100, conventional anodic oxide film hardness of about HV300, the hard anodizing film can reach HV500), decoration, as can protect the polishing surface gloss, can also stain, coloring, obtain and maintain the rich and colorful appearance, electrical insulation, transparency, functional


The oxide film produced by oxidation treatment of aluminum and its alloys is characterized by high porosity, strong adsorption capacity and easy staining. The dyeing method is to dye the anodized parts into organic dye aqueous solution and dye or electrolysis coloring.



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