What Is The Extrusion Process Of Aluminum Profile?

1. Surface pretreatment of aluminum profile: 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. Anodic oxidation: The surface of the pretreated profiles will undergo anodic oxidation on the surface of the substrate under certain process conditions to form a dense, porous, and strong adsorption Al2O3 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.