ã€China Aluminum Industry Network】 Aluminum and aluminum alloy chemical polishing formulations and process conditions, the general use of phosphate-based solution for chemical polishing, non-phosphoric acid methods are also available.
Chemical polishing formula and process conditions of aluminum and its alloys
Note: Formula 1 can polish pure aluminum and aluminum alloys with lower copper content;
Formula 2 is suitable for pure aluminum and aluminum magnesium, magnesium copper alloy;
Formula 3 is suitable for pure aluminum;
Formula 4 is suitable for industrial pure aluminum and aluminum-containing magnesium alloys;
Formula 5 is suitable for high strength aluminum alloys containing copper and zinc;
After chemical polishing of the aluminum parts and aluminum alloy parts of formula 1 or formula 4, generally 400-500 g/L nitric acid or 100-200 g/L chromic anhydride solution should be immersed for several seconds to ten seconds at room temperature to remove Surface contact with copper.
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