HETEROGENEOUS COATED STEEL SHEET HAVING EXCELLENT WORKABILITY AND CORROSION RESISTANCE, AND METHOD FOR MANUFACTURING SAME

원문 (중국어)

Provided is a method of manufacturing a heterogeneous coated steel sheet having excellent workability and corrosion resistance. The method includes: preparing a steel sheet; levitating a coating material by electromagnetic force in a vacuum chamber to generate zinc deposition vapor, and forming a zinc coating layer having an adhesion amount of 5 to 60 g/mon one surface of the steel sheet by inducing and ejecting the zinc deposition vapor; and generating zinc-magnesium alloy deposition vapor by levitating a coating material by electromagnetic force in a vacuum chamber, and forming a zinc-magnesium alloy coating layer having an adhesion amount of 10 to 40 g/mon the other surface of the steel sheet by inducing and ejecting the zinc-magnesium alloy deposition vapor. A Mg content contained in the zinc-magnesium alloy deposition vapor is 8 to 30 weight %.