The aluminum plate of the anode is oxidized, and a thin layer of aluminum oxide is formed on the surface with a thickness of 5 à 20 microns, and the hard anodized film can reach 60 à 200 microns. The anodized aluminum plate improves its hardness and wear resistance, up to 250-500 kg/mm2, has very good heat resistance, the hard anodized film has a melting point of up to 2320K, excellent insulation, and breakdown resistance The voltage is as high as 2000V, which enhances the anti-corrosion performance. It will not corrode for thousands of hours in ω=0.03NaCl salt spray.
There are a lot of micropores in the thin oxide film layer, which can adsorb various lubricants, suitable for the manufacture of engine cylinders or other wear-resistant parts; the film micropores have strong adsorption capacity and can be colored into various beautiful and bright colors. Non-ferrous metals or their alloys (comme l'aluminium, magnesium and their alloys, etc.) can be anodized.
Anodized aluminum sheets are widely used in mechanical parts, aircraft auto parts, instruments de précision et équipements radio, architectural decoration, machine casings, lamps and lighting, consumer electronics, handicrafts, appareils ménagers, décoration d'intérieur, panneaux, meubles, automotive decoration and other industries.