TREATED GALVANNEALED STEEL SHEET AND METHOD FOR INHIBITING GENERATION OF GAS PINHOLE DEFECT ON GALVANNEALED STEEL SHEET

摘要

PROBLEM TO BE SOLVED: To provide a means for treating a steel sheet, which inhibits a gas pinhole defect from occurring when a galvannealed steel sheet is coated with cationic electrodeposition coating.;SOLUTION: A treated galvannealed steel sheet has a hot-dip galvanized layer, a zinc phosphate chemical conversion coated layer formed on the hot-dip galvanized layer, and an electrically deposited metal formed on the surface of the zinc phosphate chemical conversion coated layer.;COPYRIGHT: (C)2006,JPO&NCIPI