Surface treatment composition for galvanized steel sheet, surface treatment method for galvanized steel sheet, and galvanised steel sheet
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United States of America Patent
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Jan 2, 2018
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N/A
app pub date -
Dec 28, 2012
filing date -
Dec 26, 2012
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Abstract
A surface treatment composition for a galvanized steel sheet containing, based on 100 parts by weight of the total solution, 3.0 to 25.0 parts by weight of a silane compound, 0.5 to 5.0 parts by weight of a molybdenum compound, 0.5 to 5.0 parts by weight of a vanadium compound, 0.1 to 3.0 parts by weight of a nickel compound, 0.05 to 1.0 parts by weight of a copper compound, and a remainder of solvent, a surface treatment method for a galvanized steel sheet using the surface treatment composition, and a surface-treated galvanized steel sheet, are provided. Corrosion resistance, blackening resistance, warm water resistance, and conductivity are secured free from concerns regarding the installation of additional equipment for treating chromium, increased manufacturing costs, and environmental pollution.
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