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Hand plate post-processing - anodic oxidation

Dec 29,20

Hand plate post-processing - anodic oxidation
Anodic oxidation, electrochemical oxidation of a metal or alloy.The formation of an oxide film on an aluminium product (anode) by an applied current under the appropriate electrolyte and specific process conditions.Anodizing, if not specified, usually means anodizing sulfuric acid.
In order to overcome the defects of surface hardness and wear resistance of aluminum alloy, expand the application range and extend the service life, surface treatment technology has become an indispensable link in the use of aluminum alloy, and anodic oxidation technology is the most widely used and most successful one at present.
Anodization of aluminum is an electrolytic oxidation process in which the surface of aluminum and its alloys is usually converted into an oxide film that has protective, decorative and other functional properties.Anodic oxidation of aluminum from this definition includes only the process of forming anodic oxidation film.
Anodizing is the most common surface treatment method for industrial aluminum profiles, so why do industrial aluminum profiles prefer anodizing this way?Now let's analyze the 5-shot advantage of anodic oxidation film.
1, corrosion resistant aluminum oxide film is a dense transparent protective film, alumina chemical stability, very corrosion resistant.The oxide film of pure aluminum is even more resistant to corrosion than that of aluminum profiles.
2. High hardness
The anodized industrial aluminum profile has a higher surface oxide film than the aluminum matrix itself, which plays a role in protecting the aluminum profile.Moreover, the oxide film also plays the role of wear resistance. The porous oxide film on the surface has the ability to adsorb lubricants, which makes the surface of industrial aluminum more wear resistant.
3. Insulation
Anodic oxidation film of industrial aluminum profiles is not a metal material, alumina is not conductive, is a good insulation material.Especially suitable for some electronic and electrical equipment manufacturers.
4. Adiabatic
The thermal conductivity of anodic oxidation film is much lower than that of aluminum profile matrix. Aluminum oxide film can withstand high temperature up to 1500℃, while aluminum profile matrix can only withstand high temperature of 660 degrees.
5. Adsorption capacity
The anodic oxidation film of industrial aluminum profiles is porous and has a strong adsorption capacity, so filling the pores with various pigments, lubricants, resins and so on can further improve the protection, insulation, abrasion resistance and decorative properties of aluminum products.