As a company that provides OEM Aluminum Machining CNC Service, let's share with you the main properties of anodizing aluminum alloy die castings.
Anodizing can significantly improve the corrosion resistance of aluminum alloy, improve the surface hardness and wear resistance of aluminum alloy, and have good decorative properties after the proper coloring treatment. Aluminum and its alloy anodized film coloring technology can be divided into three types: chemical dyeing, electrolytic coloring, and electrolytic overall coloring.
Chemical dyeing uses the porosity and chemical activity of the oxide film layer to adsorb various pigments to color the oxide film. According to the coloring mechanism and process, it can be divided into organic dye coloring, inorganic dye coloring, color paste printing, color dyeing, and achromatic dyeing. Wait.
Electrolytic coloring is alternating electrolysis of aluminum and its alloy in an aqueous solution containing a metal salt to deposit a metal, a metal oxide or a metal compound at the bottom of the porous layer of the oxide film due to the scattering effect of the electrodeposit on the light. Present a variety of colors.
Electrolytic overall coloring means that aluminum and its alloys are colored while anodizing, which is characterized by oxidation and coloring in one step, and the colored film has good light resistance, heat resistance, corrosion resistance, and abrasion resistance. Electrolytic overall coloring is divided into natural hair color, electrolytic coloring, and power coloring method, in which electrolytic hair color dominates, natural hair color is second, and power color development is under development.
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