Methods to improve the corrosion resistance of industrial aluminum

is an alloy material with aluminum as the main component. Aluminum rods are melted and extruded to obtain aluminum materials with different cross-sectional shapes. However, the proportion of the added alloy is different, and the mechanical properties of the industrial aluminum produced are The application areas are also different. The metal activity of aluminum is relatively high, so industrial aluminum is also more susceptible to corrosion. Below we will briefly introduce three ways to improve the corrosion resistance of industrial aluminum. 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, and also to obtain a mirror or matte (matt) surface by mechanical means . 2. Anodic oxidation: The surface pretreatment of the profile will undergo anodization on the surface of the substrate under possible process conditions to form a dense, porous, and strong adsorption AL203 film. 3. Hole sealing: sealing the pores of the porous oxide film formed after anodizing 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. ————The article comes from the Internet. If there is any infringement, please contact to delete it.
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