What Are The Main Processes For Coloring Aluminum Profiles?

　　What are the main processes of coloring aluminum profiles? The following editor will explain to you:

　　 (1) Surface pretreatment: Use chemical or physical methods to clean the surface of the profile to expose the pure matrix, in order to obtain a complete and dense artificial oxide film. It is also possible to obtain a mirror or matte (matt) surface by mechanical means.

　　 (2) Anodizing: The surface pretreatment of the profile, under certain process conditions, the surface of the substrate will be anodized to form a dense, porous, and strong adsorption AL203 film.

　　 (3) Hole sealing: sealing the pores of the porous oxide film formed after anodization to enhance the anti-pollution, corrosion resistance and wear resistance of the oxide film. The oxide film is colorless and transparent. Using the strong adsorption of the oxide film before sealing, some metal salts can be adsorbed and deposited in the film pores, which can make the appearance of the profile show many colors other than the natural color (silver white), such as: black, bronze, Golden yellow and stainless steel color, etc.