Aluminum coloring process

【China Aluminum Industry Network】Aluminum profiles need to be oxidized before they are painted. Extrusion of good aluminum alloy profiles has poor surface corrosion resistance and must be anodized for external disposal to add resistance to aluminum. Erosion, wear resistance and the appearance of beautiful.

Its main process is:

(1) Appearance pre-treatment: Chemical or physical methods are used to clean the appearance of the profile, exposing the pure matrix to facilitate obtaining a complete and fine artificial oxide film. It is also possible to obtain a specular or matt (matte) appearance by mechanical means.

(2) Anodic Oxidation: Under the certain technical conditions, the externally pre-treated profiles undergo anodic oxidation to form a fine, porous, strong AL203 film layer.

(3) Sealing: The pores of the porous oxide film formed after the anodization are closed, so that the oxide film can be prevented from contamination, corrosion and abrasion resistance. Oxide film is colorless and bright. The strong adsorption of the oxide film before sealing is used. Adsorption of some metal salts in the film pores can make the appearance of the profile besides flashing (silver white), such as: black, bronze, Gold and stainless steel and so on.


SiC ceramics not only have excellent mechanical properties at room temperature, such as high flexural strength, excellent oxidation resistance, good corrosion resistance, high wear resistance and low friction coefficient, but also high temperature mechanical properties (strength, creep resistance). Etc.) is the best among known ceramic materials. Hot press sintering, pressureless sintering, hot isostatic pressing, the high temperature strength can be maintained up to 1600 ° C, which is the best material for high temperature strength in ceramic materials. Oxidation resistance is also the best of all non-oxide ceramics. Alias Emery.

Silicon Carbide Ceramic

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