Non-chrome hot galvanizing passivation solution and preparing method thereof
A technology of hot-dip galvanizing and passivation solution, which is applied in the coating process of metal materials, etc., and can solve problems such as difficulty in chromic anhydride and environmental pollution
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Embodiment 1
[0015] Weigh 6% titanate, 6% molybdate, 5% tungstate, 10% water-based acrylate, 5% phytic acid, 5% sodium citrate, 8% inorganic acid, and 10% phosphoric acid in sequence by weight , Water 45%. Add water to the components after weighing at room temperature, then add mineral acid, titanate, molybdate, tungstate, water-based acrylate, phytic acid, sodium citrate, phosphoric acid in sequence, stir and dissolve The finished passivation solution can be obtained. The hot-dip galvanized steel sheet is treated with a passivation solution. The thickness of the passivation film is 1.0um, and the salt spray test reaches 75h. The adhesion is tested by the T-bend test. The curved surface is smooth and uncracked, reaching OT.
Embodiment 2
[0017] Weigh 10% titanate, 9% molybdate, 8% tungstate, 16% water-based acrylate, 12% phytic acid, 2% sodium citrate, 4% inorganic acid, and 4% phosphoric acid in sequence by weight , Water 35%. Add water to the components after weighing at room temperature, then add mineral acid, titanate, molybdate, tungstate, water-based acrylate, phytic acid, sodium citrate, phosphoric acid in sequence, stir and dissolve The finished passivation solution can be obtained. The hot-dip galvanized steel sheet is treated with passivation solution, and the passivation film thickness is 1.2um, and the salt spray resistance test reaches 80h. The adhesion is tested by the T-bend test, and the curved surface is smooth and uncracked, reaching OT.
Embodiment 3
[0019] Weigh 8% titanate, 7% molybdate, 7% tungstate, 13% water-based acrylate, 8% phytic acid, 4% sodium citrate, 6% inorganic acid, and 7% phosphoric acid in sequence by weight , Water 40%. Add water to the components after weighing at room temperature, then add mineral acid, titanate, molybdate, tungstate, water-based acrylate, phytic acid, sodium citrate, phosphoric acid in sequence, stir and dissolve The finished passivation solution can be obtained. Treat the hot-dip galvanized steel sheet with a passivation solution. The thickness of the passivation film is 1.5um. The T-bend test shows that the curved surface is smooth and uncracked, reaching OT. The salt spray resistance test reaches 83h. The adhesion is tested by the T-bend test. The curved surface is smooth. Does not crack, reaches OT.
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Abstract
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Application Information
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