Specific analysis of surface treatment of aluminum profiles
Aluminum profiles are aluminum materials with different cross-sectional shapes obtained by hot melting and extrusion of aluminum rods. The production process of aluminum profiles mainly includes three processes: casting, extrusion and coloring. Next, Chengyi Aluminum will introduce the surface treatment of aluminum profiles in detail.
Aluminium profiles can also obtain a mirror or matt (matt) surface by mechanical means. The surface of the aluminum profile pretreated, under certain process conditions, the surface of the aluminum profile substrate is oxidized to form a dense, porous, strong adsorption aluminum oxide film layer.
The pores of the porous oxide film formed after the aluminum profile is oxidized are closed, so that the anti-pollution, corrosion resistance and wear resistance properties of the oxide film are enhanced. The oxide film is colorless and transparent. Using the strong adsorption of the oxide film before the sealing of the aluminum profile
some metal salts are adsorbed and deposited in the film pores, so that the surface of the aluminum profile can show many colors other than the original color (silver white), such as black, Bronze, golden yellow and stainless steel.