flat plate corrosion , naeheuk degeneration and the appearance and corrosion resistance after the press forming excellent surface treatment zinc-plated steel , and zinc-plated steel sheet aqueous surface treatment solution

摘要

aqueous surface treatment liquid , water-soluble zirconium compound , water-dispersible fine particles of silica , a silane coupling agent, a bar Nadine acid compound , a treatment liquid containing phosphoric acid compound , a nickel compound and an acrylic resin emulsion at a specific ratio . Surface-treated zinc- plated steel sheet obtained by using the treatment liquid , a zirconium compound on the surface of the zinc-based plated steel sheet , fine particles of silica , a silane coupling agent -derived components , bar Nadine acid compound , phosphoric acid compound , a nickel compound and an acrylic resin to certain ratio contained in and , Zr coating weight is 10 ~ 200 / has a surface treated film . The surface-treated zinc-plated steel sheet , chromate-free corrosion-resistant , yet excellent reputation parts , naeheuk degeneration and has the appearance and corrosion resistance after the press forming . ; Zinc -plated steel