发明名称 |
WELDED JOINT HAVING EXCELLENT CORROSION RESISTANCE AND CRUDE OIL TANK |
摘要 |
Disclosed are: a welded joint which is capable of significantly reducing overall corrosion or local corrosion that occurs in a crude oil tank; and a crude oil tank which comprises the welded joint. Specifically disclosed is a crude oil tank that comprises a welded joint which is formed by welding steel materials each containing, in mass%, 0.03-0.16% of C, 0.05-1.50% of Si, 0.1-2.0% of Mn, 0.025% or less of P, 0.010% or less of S, 0.005-0.10% of Al, 0.008% or less of N, more than 0.1% but 0.5% or less of Cr and 0.03-0.4% of Cu, and additionally containing one or more elements selected from among 0.01-1.0% of W, 0.01-0.5% of Mo, 0.001-0.2% of Sn and 0.001-0.4% of Sb. The welded joint is also characterized in that Cu, Mo and W in the welded metal satisfy the following relations: 3 < {(Mo + W) in the welded metal}/{(Mo + W) in the matrix} = 8 and 0.2 = (Cu in the welded metal)/{(Mo + W) in the welded metal} = 3. |
申请公布号 |
WO2011145739(A1) |
申请公布日期 |
2011.11.24 |
申请号 |
WO2011JP61698 |
申请日期 |
2011.05.16 |
申请人 |
JFE STEEL CORPORATION;TSURI, SHIRO;KOMORI, TSUTOMU;SUMI, HIROYUKI;OI, KENJI |
发明人 |
TSURI, SHIRO;KOMORI, TSUTOMU;SUMI, HIROYUKI;OI, KENJI |
分类号 |
C22C38/60;B23K9/00;B23K103/04;B65D90/08 |
主分类号 |
C22C38/60 |
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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