METHOD OF MANUFACTURING Mn/Al VAPOR DEPOSITED GALVANNEALED STEEL SHEET WITH HIGH CORROSION RESISTANCE AND GOOD ELECTROSTATIC PAINTABILITY

摘要

PURPOSE: A method of manufacturing Mn/Al vapor deposited galvannealed steel sheet with high corrosion resistance and good electrostatic paintability is provided. CONSTITUTION: In a method of manufacturing Mn/Al vapor deposited galvannealed steel sheet with high corrosion resistance and good electrostatic paintability, the method is characterized in that a galvannealed steel sheet is heated to 100-350 deg.C; aluminum is vacuum-deposited on each side of galvannealed steel sheet in an amount of less than 10 g/m¬2; and manganese is vacuum-deposited thereon in an amount of 3 to 10 g/m¬2.