发明名称 |
METHOD FOR PRODUCTION OF MARTENSITIC STAINLESS STEEL PIPE |
摘要 |
<p>A method for producing martensitic stainless steel pipe containing by mass: 0.15 to 0.22% of C; 0.10 to 1.00% of Si; 0.10 to 1.00% of Mn; 12.00 to 14.00% of Cr; 0.01 to 0.05% of N; 0.020% or less of P; 0.010% or less of S; and the balance being Fe and impurities. The manufactured martensitic stainless steel pipe is cooled down to a range from 135 to 175°C on the pipe outer surface by air, and the edges of the pipe are then cut. This production method keeps the cracking susceptibility of the pipe at a low level, and cutting the pipe in the specified temperature range prevents forming cracks and burrs on the cutting surface.</p> |
申请公布号 |
EP2003215(A4) |
申请公布日期 |
2013.05.22 |
申请号 |
EP20070740291 |
申请日期 |
2007.03.29 |
申请人 |
NIPPON STEEL & SUMITOMO METAL CORPORATION |
发明人 |
SAITO, KENICHI |
分类号 |
C21D8/00;B21B23/00;C21D8/10;C21D9/08;C22C38/00;C22C38/02;C22C38/04 |
主分类号 |
C21D8/00 |
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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