Aluminum veneer processing process
A processing technology, aluminum veneer technology, applied in the direction of metal material coating technology, etc., can solve the problems of environmental protection and human health, difficult to effectively control the oxidation process, poor corrosion resistance and other problems, to achieve high passivation. Film efficiency, good film formation effect, excellent corrosion resistance effect
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preparation example 1
[0032] Add 1kg of sodium hydroxide, 0.6kg of sodium carbonate, 0.06kg of sodium silicate and 0.02kg of sodium fluoride into 10L of water in sequence, keep stirring to completely dissolve the added ingredients, then add 5g of sodium citrate and 0.04kg of ammonium molybdate and 0.06kg of thiourea are obtained after stirring evenly. The various reagents used in this preparation are common commercially available chemical reagents.
preparation example 2
[0034] Add 1.2kg of sodium hydroxide, 0.75kg of sodium carbonate, 0.1kg of sodium silicate and 0.03kg of sodium fluoride into 10L of water in sequence, keep stirring to completely dissolve the added ingredients, and then add 30g of sodium citrate And 0.07kg of ammonium molybdate and 0.08kg of zinc sulfate, after stirring evenly. The various reagents used in this preparation are common commercially available chemical reagents.
preparation example 3
[0036] Add 1.1kg of sodium hydroxide, 0.68kg of sodium carbonate, 0.08kg of sodium silicate and 0.025kg of sodium fluoride into 10L of water in sequence, keep stirring to completely dissolve the added ingredients, and then add 15g of sodium citrate And 0.13kg of thiourea, after stirring evenly. The various reagents used in this preparation are common commercially available chemical reagents.
[0037] Preparation example of chromium-free passivation solution
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