发明名称 |
Clad pipe |
摘要 |
A clad pipe includes an external layer and a coating layer made of Ni base anticorrosion alloy. Both end portion areas of the coating layer are formed by a build-up welded layer (Ni base alloy of composition 1 ) on the inner surface of the external layer. Other areas are formed by a Ni base alloy layer (Ni base alloy of composition 2 ) fusion-bonded to the build-up welded layers and the inner surface of the pipe, a solidus-curve temperature of the Ni base alloy layer being 1300° C. or below and lower than a solidus-curve temperature of the Ni base alloy formed by build-up welding by 150° C. or more. Composition 1 and composition 2 are adjusted so that, in the same environment, corrosion resistance of the Ni base alloy of composition 1 is equivalent to or superior to that of the Ni base alloy of composition 2.
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申请公布号 |
US7169480(B2) |
申请公布日期 |
2007.01.30 |
申请号 |
US20050046828 |
申请日期 |
2005.02.01 |
申请人 |
DAI-ICHI HIGH FREQUENCY CO., LTD. |
发明人 |
MATSUBARA YOICHI;TAKEYA AKIHIRO;MIYATA SEIICHIRO |
分类号 |
B23K9/04;B32B1/08;B21C37/15;B22D13/02;B22D19/16;B23K9/00;B23K35/30;B23K101/06;B23K103/18;B32B15/04;B32B15/18;C22C19/05;C22C38/00;C22C38/44;C22F1/00;C22F1/10;C23C4/08;C23C4/12;E21B17/00;F16L58/08 |
主分类号 |
B23K9/04 |
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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