基本信息:
- 专利标题: サワー環境で使用されるラインパイプ用継目無鋼管
- 专利标题(英):Line pipe for seamless steel pipe used in the sour environment
- 专利标题(中):线管,用于无缝钢管,其在酸性环境中使用
- 申请号:JP2015525040 申请日:2014-06-23
- 公开(公告)号:JPWO2015001759A1 公开(公告)日:2017-02-23
- 发明人: 桂一 近藤 , 勇次 荒井 , 憲司 小林
- 申请人: 新日鐵住金株式会社
- 申请人地址: 東京都千代田区丸の内二丁目6番1号
- 专利权人: 新日鐵住金株式会社
- 当前专利权人: 新日鐵住金株式会社
- 当前专利权人地址: 東京都千代田区丸の内二丁目6番1号
- 代理人: アセンド特許業務法人
- 优先权: JP2013140404 2013-07-04
- 主分类号: C22C38/00
- IPC分类号: C22C38/00 ; C22C38/38
A line pipe applications that are used in the sour environment, yield strength is less than or equal to 400MPa, to provide a superior seamless steel pipe to the HIC resistance. Seamless steel pipe according to the present embodiment is used in line pipes for use in sour environments. The seamless steel pipe, in mass%, C: 0.01~0.20%, Si: 0.05~0.50%, Mn: 0.3~2.0%, P: 0.02% or less , S: 0.01% or less, Cr: 0.02~0.2%, sol. Al: 0.001~0.100%, O: 0.0050% or less, N: 0.0100% or less, Ca: 0~0.0050%, Ti: 0~0.012%, and, Nb: 0 containing 0.012%, the balance contains the chemical composition of Fe and impurities, and 10% to 50% ferrite by area ratio, and less than 0% to 5% perlite, balance tempered bainite and / or and an organization that consists of tempered martensite, the particle size is the inclusion number of more than 50μm is 15 / 100mm 2 or less, has a yield strength of less than 400MPa.
公开/授权文献:
- JP6028863B2 サワー環境で使用されるラインパイプ用継目無鋼管 公开/授权日:2016-11-24
信息查询:
EspacenetIPC结构图谱:
C | 化学;冶金 |
--C22 | 冶金(铁的冶金入C21);黑色或有色金属合金;合金或有色金属的处理 |
----C22C | 合金 |
------C22C38/00 | 铁基合金,例如合金钢 |