Advantages

After anodizing, the surface of the aluminum can produce a few microns-hundreds of microns of oxide film. Compared with the natural oxide film of aluminum alloy, its corrosion resistance, wear resistance and decorative properties have been significantly improved and improved. In fact, the direct current sulfuric acid anodic oxidation method is the most common application, because it is suitable for aluminum and most Anodizing of aluminum alloy; thicker film, hard and wear-resistant, better corrosion resistance after sealing; film colorless and transparent, strong adsorption capacity, easy to color; lower processing voltage, less power consumption; The treatment process does not need to change the voltage cycle, which is conducive to continuous production and practical operation automation; sulfuric acid is less harmful to human body than chromic acid, wide supply, low price and other advantages. The aluminum or its alloy of the anode is oxidized, and a thin layer of alumina is formed on the surface, with a thickness of 5-30 microns, and the hard anodized film can reach 25-150 microns.