The material of aluminum extrusion profile, aluminum itself is a kind of material corrosion resistance is strong, but met after oxygen on the surface of aluminum form 3 oxidation 2 aluminium oxide, so after a long time will slowly lifted his KangFuXing and mo resistance, and aluminum is very sensitive to acid substances, encounter acid can damage the surface of the aluminum group layer, so we need to again after oxidation treatment, add a layer of protective film on the surface. Strengthen KangFuXing surface, aluminum profiles after surface anodized, its corrosion resistance, hardness, wear resistance, insulation and heat resistance were increased significantly.The most anodized metal is aluminum.Anodic oxidation of aluminum tubes is generally carried out in an acidic electrolyte with aluminum as the anode.In electrolysis, the anion of oxygen interacts with aluminum to produce an oxide film.The initial formation of this film is not fine enough, although there is a certain resistance, but the electrolyte of negative oxygen ions can still reach the surface of the aluminum oxide film continues to form.As the film thickness increases, the resistance also increases, thus the electrolytic current decreases.At this point, the outer oxide film in contact with the electrolyte is chemically dissolved.When the rate of formation of oxide on the surface of aluminum gradually balances the rate of chemical dissolution, the maximum thickness of the oxide film under this electrolytic parameter can be achieved.The outer layer of anodic oxidation film of aluminum is porous and easy to absorb dyes and colored materials, so it can be dyed and enhance its decorative effect.The corrosion resistance and wear resistance of oxide film can be further improved after being closed by hot water, high temperature steam or nickel salt.In addition to aluminum, industrial surface anodized metals include magnesium alloy, copper and copper alloy, zinc and zinc alloy, steel, cadmium, tantalum, zirconium and so on.