Good quality aluminum profiles are all colored. Coloring can not only improve the aesthetics of the aluminum but also improve the corrosion resistance of the aluminum surface. Do you know what are the methods for coloring aluminum? Let me introduce it.
1.pretreatment
Cleaning the surface of aluminum profiles by chemical or physical methods can show the original color of aluminum profiles. We can also obtain mirror or matte aluminum profiles through mechanical means.

2. Anodizing
After the surface treatment of the aluminum profile, under certain processing conditions, the surface of the aluminum material is anodized, and the oxidized aluminum surface will form a porous and strong adsorption protective film.

3.sealing
The pores of the porous oxide film formed after anodic oxidation are closed to improve the corrosion resistance of aluminum. We can use the strong adsorption of the oxide film before sealing to adsorb and deposit some metal salts in the film pores to make the aluminum profile appear. Out of colors other than the natural color.