Technique for preparing trivalent chromium white deactivation liquid
A passivation solution and trivalent chromium technology, which is applied in the field of trivalent chromium white passivation solution production process, can solve the problems of easy falling off, environmental pollution, affecting workers' health, etc., and achieves safe operation, strong corrosion resistance, stability and no The effect of pungent odors
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[0006] Embodiment: A kind of trivalent chromium white passivation solution, under normal temperature and pressure, add 60 grams / liter of chromic anhydride and stir to dissolve, add potassium sodium tartrate 60 grams / liter, stir and dissolve reaction, leave several hours, stir, pH value is 4 Between -5, add sulfuric acid 50ml / liter, stir evenly, let it stand for several hours, immerse the galvanized parts with semi-brightness or above in the passivation solution for 5-23 seconds, wash with water, and dry.
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