发明申请
- 专利标题: HOT-DIP GALVANIZED STEEL SHEET AND METHOD FOR PRODUCING THE SAME
- 专利标题(中): 热镀锌钢板及其制造方法
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申请号: US13825210申请日: 2011-09-28
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公开(公告)号: US20130273389A1公开(公告)日: 2013-10-17
- 发明人: Rie Kaneko , Nobue Fujibayashi , Takahiro Kubota
- 申请人: Rie Kaneko , Nobue Fujibayashi , Takahiro Kubota
- 申请人地址: JP Chiyoda-ku
- 专利权人: JFE STEEL CORPORATION
- 当前专利权人: JFE STEEL CORPORATION
- 当前专利权人地址: JP Chiyoda-ku
- 优先权: JP2010-219975 20100929
- 国际申请: PCT/JP2011/072903 WO 20110928
- 主分类号: B05D7/14
- IPC分类号: B05D7/14 ; B32B15/08
摘要:
A method of producing a hot-dip galvanized steel sheet includes applying, to a hot-dip galvanized steel sheet having a Ra of 0.5 to 2.0 μm and a PPI of 150 or more, a predetermined surface treatment agent, i.e., a surface treatment agent containing a specified resin compound, a specified urethane resin having cationy, a specified silane coupling agent having a functional group, a specified organic Ti chelate compound, and a tetravalent vanadyl compound at a specified ratio; and drying the surface treatment agent at a ultimate sheet temperature of 50° C. to 180° C. to form a surface treatment coating film with a coating weight of 0.2 to 1.0 g/m2 on the surface of the steel sheet.