SURFACE-TREATMENT SOLUTION FOR ZINC OR ZINC ALLOY COATED STEEL SHEET, ZINC OR ZINC ALLOY COATED STEEL SHEET WITH SURFACE-TREATMENT FILM AND METHOD OF PRODUCING SAME

摘要

film on the surface treatment does not contain chromium compounds, corrosion-resistant flat plate, denatured naeheuk and naemul stains Castle is an excellent thing, of course, continuous gwahok not ironing the conducted even within the black stain of the high-speed press forming, within the flake coating peeling resistance, and corrosion resistance of zinc-plated steel sheet having excellent surface treated film It provides a surface treatment liquid to achieve. Zinc-plated steel sheet surface treatment solution is zirconium carbonate compound of the invention (A) and the phosphate compound (B) and a hydroxycarboxylic acid (C), and tetraalkoxysilane (D) and a silane coupling agent having an epoxy group ( E), a bar Nadine acid compound (F) and containing a nickel compound (G), content of the (A) ~ (G) is characterized in that the adjusted so as to satisfy the specific condition. ;