Method for composite phosphatization on metallic material surface
A metal material and metal technology, applied in the direction of metal material coating process, etc., can solve the problems of short salt spray test time, easy rust, poor metal surface adhesion, easy bump damage, etc., to achieve good anti-rust effect and adhesion. Excellent, simple process effect
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[0010] Specific implementation manners are introduced below through examples:
[0011] 1. Cleaning: Firstly, the metal parts are immersed in acid solution for cleaning, and the cleaning time is 15-45 minutes;
[0012] 2. Phosphating: the cleaned metal parts are subjected to surface phosphating treatment, the thickness of the phosphating layer is 0.002-0.005mm;
[0013] 3. Coating protective layer: the surface phosphate treated parts are dip coated with protective resin, the thickness is 0.002-0.005mm;
[0014] 4. Spin drying: place the parts in a centrifugal spin dryer for 1-3 minutes;
[0015] 5. Drying: drying at 30°-40°C for 10-30 minutes.
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