There are many common surface treatments for aluminum alloy shells, which are designed to improve the corrosion resistance, hardness, aesthetics and other properties of the aluminum alloy surface. Here are some common surface treatments:
1. Anodizing:
Anodizing is a process by which an oxide layer is formed on the surface of an aluminum alloy to enhance its hardness and corrosion resistance. This layer of oxide film usually also provides the option for dyeing to change the appearance of the aluminum alloy.
2. Electrophoretic Coating:
Electrophoretic coating is a method of forming a uniform and strong adhesion coating on the surface of an aluminum alloy. This coating usually has good corrosion and abrasion resistance.
3. Powder Coating:
Spray coating is done by spraying a powder-like coating onto the surface of an aluminum alloy and then baking it at high temperatures to cure it. This coating provides good appearance and corrosion resistance.
4. Chemical Chromating:
Chemical chromium plating is a method to improve the corrosion resistance of aluminum alloy surface. It can also change the color of the surface and provide a protective coating.
5. Sandblasting:
Sandblasting is a method of spraying sand or other granular materials at high speed to change the texture and appearance of the aluminum alloy surface. This also helps remove dirt and oxides from the surface.
6. Mechanical Polishing:
Mechanical polishing is to improve the finish and gloss of the aluminum alloy surface by mechanical means, such as grinding or polishing.