Invention Grant
US09499914B2 Method for manufacturing zinc or zinc alloy coated steel sheet and zinc or zinc alloy coated steel sheet manufactured by the method 有权
通过该方法制造锌或锌合金涂层钢板和锌或锌合金涂层钢板的方法

Method for manufacturing zinc or zinc alloy coated steel sheet and zinc or zinc alloy coated steel sheet manufactured by the method
Abstract:
A zinc or zinc alloy coated steel excellent in various properties including corrosion resistance and adhesion properties and, in particular, good conductivity is provided. A method for manufacturing a zinc or zinc alloy coated steel sheet includes: preparing a surface-treatment liquid for a the steel sheet, containing following components, by blending the including: (A) a specific resin emulsion; (B) a tetraalkoxysilane; (C) at least one type of silane coupling agent; (D) a chelating agent; (E) a vanadate compound; (F) a titanium compound; and water; and applying by coating the surface-treatment liquid to a surface of the steel sheet, heating and drying the surface of the steel sheet such that a coating amount per one surface is 200 to 1,000 mg/m2 to form a surface treatment coating film on the surface.
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