Patent ID: 7998533
Filing Date: 2011-08-16
Classification: B32B,C22C,C23C,Y10T

Abstract:
1. A process for producing a highly corrosion-resistant hot-dip galvanized steel product excellent in surface smoothness and formability, said process comprising: providing a plating bath for hot-dip galvanizing; adding a Ti—Zn base intermetallic compound consisting essentially of a powder of the Ti—Zn base intermetallic compound to said plating bath; hot-dip galvanizing a steel product in said plating bath having said Ti—Zn base intermetallic compound added thereto; said hot-dip galvanizing providing a plating layer on a surface of said steel product, said plating layer comprising 4 to 22% by mass of Al, 1 to 5% by mass of Mg, up to 0.1% by mass of Ti, up to 0.5% by mass of Si and a balance of Zn and unavoidable impurities; providing said plating layer with a metal structure in which a Mg providing said plating layer with a Ti—Al base intermetallic compound in at least one of the Al phase and Zn