发明名称 |
METHOD FOR CHEMICALLY CONVERTING STEEL MEMBER, METHOD FOR MANUFACTURING COATED STEEL MEMBER HAVING BEEN ELECTRODEPOSITION-COATED, AND COATED STEEL MEMBER |
摘要 |
<p>Provided is a coated steel member that has an excellent corrosion resistance in a weld zone. In manufacturing a coated steel member by weld joining steel plates together and then subjecting the thus obtained steel member to a chemical conversion treatment and electrodeposition coating, the chemical conversion treatment comprises a surface-conditioning treatment using a surface-conditioning agent that contains a zinc phosphate colloid, and a subsequent zinc phosphate treatment using a zinc phosphate-treating agent that has a fluorine concentration of 100 mass ppm or greater.</p> |
申请公布号 |
WO2013153682(A1) |
申请公布日期 |
2013.10.17 |
申请号 |
WO2012JP60643 |
申请日期 |
2012.04.13 |
申请人 |
JFE STEEL CORPORATION;ANDO, SATORU;MIZUNO, DAISUKE;YAMAMOTO, SHUNSUKE;KATAOKA, TOKIHIKO |
发明人 |
ANDO, SATORU;MIZUNO, DAISUKE;YAMAMOTO, SHUNSUKE;KATAOKA, TOKIHIKO |
分类号 |
C23C22/78;C23C2/06;C23C2/28;C23C22/12;C23C22/36 |
主分类号 |
C23C22/78 |
代理机构 |
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代理人 |
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主权项 |
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地址 |
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