发明公开
EP2088222A1 PHOSPHATE-TREATED GALVANIZED STEEL SHEET AND METHOD FOR PRODUCING THE SAME
审中-公开
VERSFAHREN ZU SEINER HERSTELLUNG PHOSPHATBEHANDELTES VERZINKTES STAHLBLECH
- 专利标题： PHOSPHATE-TREATED GALVANIZED STEEL SHEET AND METHOD FOR PRODUCING THE SAME
- 专利标题（中）： VERSFAHREN ZU SEINER HERSTELLUNG PHOSPHATBEHANDELTES VERZINKTES STAHLBLECH
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申请号： EP07831322.8申请日： 2007-10-31
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公开(公告)号： EP2088222A1公开(公告)日： 2009-08-12
- 发明人: ANDO, Satoru , TADA, Chiyoko , NAKAMARU, Hiroki , SASAKI, Kenichi , FUJIBAYASHI, Nobue , MATSUZAKI, Akira
- 申请人： JFE Steel Corporation
- 申请人地址： 2-3, Uchisaiwai-cho 2-chome Chiyoda-ku Tokyo, 100-0011 JP
- 专利权人： JFE Steel Corporation
- 当前专利权人： JFE Steel Corporation
- 当前专利权人地址： 2-3, Uchisaiwai-cho 2-chome Chiyoda-ku Tokyo, 100-0011 JP
- 代理机构： HOFFMANN EITLE
- 优先权： JP2006295589 20061031
- 国际公布： WO2008054016 20080508
- 主分类号： C23C22/07
- IPC分类号： C23C22/07
摘要：
A method for making a phosphate-treated galvanized steel sheet, including forming a phosphate film on the surface of a galvanized layer of a galvanized steel sheet using a phosphate treatment solution containing Zn 2+ and Mg 2+ so as to satisfy 2.0 2+ ≤ 5.0 g/L, 2.0 ≤ Mg 2+ ≤ 5.0 g/L, and 0.4 ≤ Mg 2+ /Zn 2+ ≤ 2.5, and satisfying 0.020 ≤ free acidity/total acidity
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