The oxidized anodized film of sulfuric acid is colorless. After the anode part is filled with hot water, it is easy to get fingerprints and watermarks, and the film layer is white. The reason may be:
1 closed temperature and time is not enough;
2 pH is wrong;
3 There is too much aluminum hydroxide in the solution.
The corresponding processing method:
1 production according to process specifications;
2 adjust the pH value;
3 Replace the water.
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Label: Anodized Sulfuric acid Coating Hot water pH
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