JP4751027B2 - 溶接部脆化割れ特性に優れた高強度溶接鋼管 - Google Patents
溶接部脆化割れ特性に優れた高強度溶接鋼管 Download PDFInfo
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- JP4751027B2 JP4751027B2 JP2004057724A JP2004057724A JP4751027B2 JP 4751027 B2 JP4751027 B2 JP 4751027B2 JP 2004057724 A JP2004057724 A JP 2004057724A JP 2004057724 A JP2004057724 A JP 2004057724A JP 4751027 B2 JP4751027 B2 JP 4751027B2
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- Prior art keywords
- steel pipe
- welding
- stress
- hydrogen
- strength
- Prior art date
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Description
0.6≦Wo/Wi≦1.0、または 1.7≦Wo/Wi≦2.5
であることを特徴とする溶接金属の脆化割れ性に優れた溶接鋼管である。
Wo/Wi≦1.0、または 1.7≦Wo/Wi
でピーク応力は750MPaを下回り、水素割れが発生しないことが予見できた。
Wo/Wi≦1.0、または 1.7≦Wo/Wi
と予見された。
Wo/Wi≦0.6、または2.5≦Wo/Wi
の範囲では低値発生確率が上昇することがわかった。
0.6≦Wo/Wi≦1.0、または 1.7≦Wo/Wi≦2.5
に設定することが最適であるという結論に至った。
Claims (1)
- 引張強度が850MPa以上1100MPa以下であり、サブマージアーク溶接によるシーム溶接を内面から、続いて外面から、それぞれ一層盛りによって行う溶接鋼管において、前記鋼管の内面で先行する溶接金属の高さ:Wiと前記外面で追従する溶接金属の高さ:Woとの比が、
0.6≦Wo/Wi≦1.0、または 1.7≦Wo/Wi≦2.5
であることを特徴とする溶接金属の脆化割れ性に優れた溶接鋼管。
Priority Applications (1)
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---|---|---|---|
JP2004057724A JP4751027B2 (ja) | 2004-03-02 | 2004-03-02 | 溶接部脆化割れ特性に優れた高強度溶接鋼管 |
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JP2004057724A JP4751027B2 (ja) | 2004-03-02 | 2004-03-02 | 溶接部脆化割れ特性に優れた高強度溶接鋼管 |
Publications (2)
Publication Number | Publication Date |
---|---|
JP2005246403A JP2005246403A (ja) | 2005-09-15 |
JP4751027B2 true JP4751027B2 (ja) | 2011-08-17 |
Family
ID=35027387
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
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JP2004057724A Expired - Fee Related JP4751027B2 (ja) | 2004-03-02 | 2004-03-02 | 溶接部脆化割れ特性に優れた高強度溶接鋼管 |
Country Status (1)
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JP (1) | JP4751027B2 (ja) |
Families Citing this family (3)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
CN102248267A (zh) * | 2011-07-25 | 2011-11-23 | 中国石化集团第四建设公司 | 一种厚壁铬钼钢管道埋弧焊焊接工艺 |
JP5870665B2 (ja) * | 2011-12-08 | 2016-03-01 | Jfeスチール株式会社 | 耐硫化物応力腐食割れ性に優れた引張強度600MPa以上の高強度溶接鋼管 |
JP5263378B2 (ja) * | 2011-12-13 | 2013-08-14 | 新日鐵住金株式会社 | 溶接鋼管の製造方法 |
Family Cites Families (8)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JPS59137191A (ja) * | 1983-01-27 | 1984-08-07 | Nippon Kokan Kk <Nkk> | クラツド鋼管の溶接方法 |
JPS61222683A (ja) * | 1985-03-28 | 1986-10-03 | Nippon Steel Corp | 狭開先潜弧溶接方法 |
JPS61232066A (ja) * | 1985-04-05 | 1986-10-16 | Nippon Steel Corp | 狭開先潜弧溶接方法 |
JPS62110872A (ja) * | 1985-11-07 | 1987-05-21 | Kawasaki Steel Corp | 鋼板の突合せ溶接方法 |
JPH02220796A (ja) * | 1989-02-23 | 1990-09-03 | Nippon Steel Corp | 直流サブマージアーク溶接法 |
JPH05375A (ja) * | 1990-10-12 | 1993-01-08 | Kawasaki Steel Corp | 鋼管のサブマージアーク溶接方法および装置 |
JPH04279278A (ja) * | 1991-03-05 | 1992-10-05 | Nippon Steel Corp | 溶接部の耐硫化物応力腐食割れ性に優れたuoe鋼管の製造方法 |
JP3702216B2 (ja) * | 2001-11-01 | 2005-10-05 | 新日本製鐵株式会社 | シーム溶接部靭性に優れた内外面サブマージアーク溶接鋼管の製造方法 |
-
2004
- 2004-03-02 JP JP2004057724A patent/JP4751027B2/ja not_active Expired - Fee Related
Also Published As
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JP2005246403A (ja) | 2005-09-15 |
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