EP3239319A4 - Tôle d'acier présentant une excellente résistance à la fissuration induite par l'hydrogène et tube d'acier pour tuyau de canalisation - Google Patents

Tôle d'acier présentant une excellente résistance à la fissuration induite par l'hydrogène et tube d'acier pour tuyau de canalisation Download PDF

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Publication number
EP3239319A4
EP3239319A4 EP15873094.5A EP15873094A EP3239319A4 EP 3239319 A4 EP3239319 A4 EP 3239319A4 EP 15873094 A EP15873094 A EP 15873094A EP 3239319 A4 EP3239319 A4 EP 3239319A4
Authority
EP
European Patent Office
Prior art keywords
pipe
steel
cracking resistance
induced cracking
excellent hydrogen
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Withdrawn
Application number
EP15873094.5A
Other languages
German (de)
English (en)
Other versions
EP3239319A1 (fr
Inventor
Kiichiro TASHIRO
Taku Kato
Yuichi OKA
Shinsuke Sato
Haruya KAWANO
Takashi Miyake
Sei Kimura
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Kobe Steel Ltd
Original Assignee
Kobe Steel Ltd
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by Kobe Steel Ltd filed Critical Kobe Steel Ltd
Priority claimed from PCT/JP2015/085869 external-priority patent/WO2016104526A1/fr
Publication of EP3239319A1 publication Critical patent/EP3239319A1/fr
Publication of EP3239319A4 publication Critical patent/EP3239319A4/fr
Withdrawn legal-status Critical Current

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Classifications

    • C—CHEMISTRY; METALLURGY
    • C22—METALLURGY; FERROUS OR NON-FERROUS ALLOYS; TREATMENT OF ALLOYS OR NON-FERROUS METALS
    • C22C—ALLOYS
    • C22C38/00—Ferrous alloys, e.g. steel alloys
    • C22C38/14—Ferrous alloys, e.g. steel alloys containing titanium or zirconium
    • C—CHEMISTRY; METALLURGY
    • C21—METALLURGY OF IRON
    • C21D—MODIFYING THE PHYSICAL STRUCTURE OF FERROUS METALS; GENERAL DEVICES FOR HEAT TREATMENT OF FERROUS OR NON-FERROUS METALS OR ALLOYS; MAKING METAL MALLEABLE, e.g. BY DECARBURISATION OR TEMPERING
    • C21D8/00—Modifying the physical properties of ferrous metals or ferrous alloys by deformation combined with, or followed by, heat treatment
    • C21D8/02—Modifying the physical properties of ferrous metals or ferrous alloys by deformation combined with, or followed by, heat treatment during manufacturing of plates or strips
    • C21D8/0221—Modifying the physical properties of ferrous metals or ferrous alloys by deformation combined with, or followed by, heat treatment during manufacturing of plates or strips characterised by the working steps
    • C—CHEMISTRY; METALLURGY
    • C21—METALLURGY OF IRON
    • C21D—MODIFYING THE PHYSICAL STRUCTURE OF FERROUS METALS; GENERAL DEVICES FOR HEAT TREATMENT OF FERROUS OR NON-FERROUS METALS OR ALLOYS; MAKING METAL MALLEABLE, e.g. BY DECARBURISATION OR TEMPERING
    • C21D8/00—Modifying the physical properties of ferrous metals or ferrous alloys by deformation combined with, or followed by, heat treatment
    • C21D8/02—Modifying the physical properties of ferrous metals or ferrous alloys by deformation combined with, or followed by, heat treatment during manufacturing of plates or strips
    • C21D8/0221—Modifying the physical properties of ferrous metals or ferrous alloys by deformation combined with, or followed by, heat treatment during manufacturing of plates or strips characterised by the working steps
    • C21D8/0226—Hot rolling
    • C—CHEMISTRY; METALLURGY
    • C21—METALLURGY OF IRON
    • C21D—MODIFYING THE PHYSICAL STRUCTURE OF FERROUS METALS; GENERAL DEVICES FOR HEAT TREATMENT OF FERROUS OR NON-FERROUS METALS OR ALLOYS; MAKING METAL MALLEABLE, e.g. BY DECARBURISATION OR TEMPERING
    • C21D8/00—Modifying the physical properties of ferrous metals or ferrous alloys by deformation combined with, or followed by, heat treatment
    • C21D8/02—Modifying the physical properties of ferrous metals or ferrous alloys by deformation combined with, or followed by, heat treatment during manufacturing of plates or strips
    • C21D8/0247—Modifying the physical properties of ferrous metals or ferrous alloys by deformation combined with, or followed by, heat treatment during manufacturing of plates or strips characterised by the heat treatment
    • C21D8/0263—Modifying the physical properties of ferrous metals or ferrous alloys by deformation combined with, or followed by, heat treatment during manufacturing of plates or strips characterised by the heat treatment following hot rolling
    • C—CHEMISTRY; METALLURGY
    • C21—METALLURGY OF IRON
    • C21D—MODIFYING THE PHYSICAL STRUCTURE OF FERROUS METALS; GENERAL DEVICES FOR HEAT TREATMENT OF FERROUS OR NON-FERROUS METALS OR ALLOYS; MAKING METAL MALLEABLE, e.g. BY DECARBURISATION OR TEMPERING
    • C21D8/00—Modifying the physical properties of ferrous metals or ferrous alloys by deformation combined with, or followed by, heat treatment
    • C21D8/10—Modifying the physical properties of ferrous metals or ferrous alloys by deformation combined with, or followed by, heat treatment during manufacturing of tubular bodies
    • C—CHEMISTRY; METALLURGY
    • C21—METALLURGY OF IRON
    • C21D—MODIFYING THE PHYSICAL STRUCTURE OF FERROUS METALS; GENERAL DEVICES FOR HEAT TREATMENT OF FERROUS OR NON-FERROUS METALS OR ALLOYS; MAKING METAL MALLEABLE, e.g. BY DECARBURISATION OR TEMPERING
    • C21D9/00—Heat treatment, e.g. annealing, hardening, quenching or tempering, adapted for particular articles; Furnaces therefor
    • C21D9/08—Heat treatment, e.g. annealing, hardening, quenching or tempering, adapted for particular articles; Furnaces therefor for tubular bodies or pipes
    • C—CHEMISTRY; METALLURGY
    • C22—METALLURGY; FERROUS OR NON-FERROUS ALLOYS; TREATMENT OF ALLOYS OR NON-FERROUS METALS
    • C22C—ALLOYS
    • C22C38/00—Ferrous alloys, e.g. steel alloys
    • C22C38/001—Ferrous alloys, e.g. steel alloys containing N
    • C—CHEMISTRY; METALLURGY
    • C22—METALLURGY; FERROUS OR NON-FERROUS ALLOYS; TREATMENT OF ALLOYS OR NON-FERROUS METALS
    • C22C—ALLOYS
    • C22C38/00—Ferrous alloys, e.g. steel alloys
    • C22C38/002—Ferrous alloys, e.g. steel alloys containing In, Mg, or other elements not provided for in one single group C22C38/001 - C22C38/60
    • C—CHEMISTRY; METALLURGY
    • C22—METALLURGY; FERROUS OR NON-FERROUS ALLOYS; TREATMENT OF ALLOYS OR NON-FERROUS METALS
    • C22C—ALLOYS
    • C22C38/00—Ferrous alloys, e.g. steel alloys
    • C22C38/004—Very low carbon steels, i.e. having a carbon content of less than 0,01%
    • C—CHEMISTRY; METALLURGY
    • C22—METALLURGY; FERROUS OR NON-FERROUS ALLOYS; TREATMENT OF ALLOYS OR NON-FERROUS METALS
    • C22C—ALLOYS
    • C22C38/00—Ferrous alloys, e.g. steel alloys
    • C22C38/005—Ferrous alloys, e.g. steel alloys containing rare earths, i.e. Sc, Y, Lanthanides
    • C—CHEMISTRY; METALLURGY
    • C22—METALLURGY; FERROUS OR NON-FERROUS ALLOYS; TREATMENT OF ALLOYS OR NON-FERROUS METALS
    • C22C—ALLOYS
    • C22C38/00—Ferrous alloys, e.g. steel alloys
    • C22C38/02—Ferrous alloys, e.g. steel alloys containing silicon
    • C—CHEMISTRY; METALLURGY
    • C22—METALLURGY; FERROUS OR NON-FERROUS ALLOYS; TREATMENT OF ALLOYS OR NON-FERROUS METALS
    • C22C—ALLOYS
    • C22C38/00—Ferrous alloys, e.g. steel alloys
    • C22C38/04—Ferrous alloys, e.g. steel alloys containing manganese
    • C—CHEMISTRY; METALLURGY
    • C22—METALLURGY; FERROUS OR NON-FERROUS ALLOYS; TREATMENT OF ALLOYS OR NON-FERROUS METALS
    • C22C—ALLOYS
    • C22C38/00—Ferrous alloys, e.g. steel alloys
    • C22C38/06—Ferrous alloys, e.g. steel alloys containing aluminium
    • C—CHEMISTRY; METALLURGY
    • C22—METALLURGY; FERROUS OR NON-FERROUS ALLOYS; TREATMENT OF ALLOYS OR NON-FERROUS METALS
    • C22C—ALLOYS
    • C22C38/00—Ferrous alloys, e.g. steel alloys
    • C22C38/08—Ferrous alloys, e.g. steel alloys containing nickel
    • C—CHEMISTRY; METALLURGY
    • C22—METALLURGY; FERROUS OR NON-FERROUS ALLOYS; TREATMENT OF ALLOYS OR NON-FERROUS METALS
    • C22C—ALLOYS
    • C22C38/00—Ferrous alloys, e.g. steel alloys
    • C22C38/12—Ferrous alloys, e.g. steel alloys containing tungsten, tantalum, molybdenum, vanadium, or niobium
    • C—CHEMISTRY; METALLURGY
    • C22—METALLURGY; FERROUS OR NON-FERROUS ALLOYS; TREATMENT OF ALLOYS OR NON-FERROUS METALS
    • C22C—ALLOYS
    • C22C38/00—Ferrous alloys, e.g. steel alloys
    • C22C38/16—Ferrous alloys, e.g. steel alloys containing copper
    • C—CHEMISTRY; METALLURGY
    • C22—METALLURGY; FERROUS OR NON-FERROUS ALLOYS; TREATMENT OF ALLOYS OR NON-FERROUS METALS
    • C22C—ALLOYS
    • C22C38/00—Ferrous alloys, e.g. steel alloys
    • C22C38/18—Ferrous alloys, e.g. steel alloys containing chromium
    • C22C38/40—Ferrous alloys, e.g. steel alloys containing chromium with nickel
    • C22C38/58—Ferrous alloys, e.g. steel alloys containing chromium with nickel with more than 1.5% by weight of manganese
    • C—CHEMISTRY; METALLURGY
    • C21—METALLURGY OF IRON
    • C21D—MODIFYING THE PHYSICAL STRUCTURE OF FERROUS METALS; GENERAL DEVICES FOR HEAT TREATMENT OF FERROUS OR NON-FERROUS METALS OR ALLOYS; MAKING METAL MALLEABLE, e.g. BY DECARBURISATION OR TEMPERING
    • C21D1/00—General methods or devices for heat treatment, e.g. annealing, hardening, quenching or tempering
    • C21D1/18—Hardening; Quenching with or without subsequent tempering
    • C—CHEMISTRY; METALLURGY
    • C21—METALLURGY OF IRON
    • C21D—MODIFYING THE PHYSICAL STRUCTURE OF FERROUS METALS; GENERAL DEVICES FOR HEAT TREATMENT OF FERROUS OR NON-FERROUS METALS OR ALLOYS; MAKING METAL MALLEABLE, e.g. BY DECARBURISATION OR TEMPERING
    • C21D8/00—Modifying the physical properties of ferrous metals or ferrous alloys by deformation combined with, or followed by, heat treatment
    • C21D8/02—Modifying the physical properties of ferrous metals or ferrous alloys by deformation combined with, or followed by, heat treatment during manufacturing of plates or strips

Landscapes

  • Chemical & Material Sciences (AREA)
  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Materials Engineering (AREA)
  • Metallurgy (AREA)
  • Organic Chemistry (AREA)
  • Physics & Mathematics (AREA)
  • Thermal Sciences (AREA)
  • Crystallography & Structural Chemistry (AREA)
  • Manufacturing & Machinery (AREA)
  • Heat Treatment Of Steel (AREA)
  • Treatment Of Steel In Its Molten State (AREA)
EP15873094.5A 2014-12-26 2015-12-22 Tôle d'acier présentant une excellente résistance à la fissuration induite par l'hydrogène et tube d'acier pour tuyau de canalisation Withdrawn EP3239319A4 (fr)

Applications Claiming Priority (3)

Application Number Priority Date Filing Date Title
JP2014266491 2014-12-26
JP2015202378A JP2016125137A (ja) 2014-12-26 2015-10-13 耐水素誘起割れ性に優れた鋼板およびラインパイプ用鋼管
PCT/JP2015/085869 WO2016104526A1 (fr) 2014-12-26 2015-12-22 Tôle d'acier présentant une excellente résistance à la fissuration induite par l'hydrogène et tube d'acier pour tuyau de canalisation

Publications (2)

Publication Number Publication Date
EP3239319A1 EP3239319A1 (fr) 2017-11-01
EP3239319A4 true EP3239319A4 (fr) 2018-06-27

Family

ID=56359036

Family Applications (1)

Application Number Title Priority Date Filing Date
EP15873094.5A Withdrawn EP3239319A4 (fr) 2014-12-26 2015-12-22 Tôle d'acier présentant une excellente résistance à la fissuration induite par l'hydrogène et tube d'acier pour tuyau de canalisation

Country Status (4)

Country Link
EP (1) EP3239319A4 (fr)
JP (1) JP2016125137A (fr)
KR (1) KR20170093964A (fr)
CN (1) CN107109566A (fr)

Families Citing this family (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP2016125140A (ja) * 2014-12-26 2016-07-11 株式会社神戸製鋼所 耐水素誘起割れ性と靭性に優れた鋼板およびラインパイプ用鋼管
JP2016125139A (ja) * 2014-12-26 2016-07-11 株式会社神戸製鋼所 耐水素誘起割れ性に優れた鋼板およびラインパイプ用鋼管
JP6869151B2 (ja) * 2016-11-16 2021-05-12 株式会社神戸製鋼所 鋼板およびラインパイプ用鋼管並びにその製造方法
CN111220614B (zh) * 2018-11-27 2023-05-09 宝山钢铁股份有限公司 一种快速评估钢水质量的方法
WO2024247881A1 (fr) 2023-05-30 2024-12-05 Ｊｆｅスチール株式会社 Procédé de détermination de qualité de produit, procédé de détermination de qualité de brame coulée en continu, procédé de détermination de destination de celui-ci, procédé de détermination de conditions de coulée continue, et procédé de coulée continue d'acier

Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP2014173892A (ja) * 2013-03-06 2014-09-22 Kobe Steel Ltd スラブにおける異なる板厚位置でのＣａ濃度分析結果を用いた耐サワー鋼スラブの品質判定方法
JP2014173893A (ja) * 2013-03-06 2014-09-22 Kobe Steel Ltd スラブにおける特定範囲の板厚位置でのＣａ濃度分析結果を用いた耐サワー鋼スラブの品質判定方法
JP2014208892A (ja) * 2013-03-29 2014-11-06 株式会社神戸製鋼所 耐水素誘起割れ性と靭性に優れた鋼板およびラインパイプ用鋼管
JP2014208891A (ja) * 2013-03-29 2014-11-06 株式会社神戸製鋼所 耐水素誘起割れ性と溶接熱影響部の靭性に優れた鋼板およびラインパイプ用鋼管
EP3018231A1 (fr) * 2013-07-01 2016-05-11 Kabushiki Kaisha Kobe Seiko Sho (Kobe Steel, Ltd.) Tôle d'acier présentant une excellente résistance aux fissurations induites par l'hydrogène et une excellente ténacité ainsi que tube d'acier pour un tube de canalisation

Family Cites Families (15)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPH075968B2 (ja) * 1990-02-13 1995-01-25 新日本製鐵株式会社 耐水素誘起割れ性、耐硫化物応力腐食割れ性および低温靭性に優れた鋼板の製造方法
JPH06293915A (ja) * 1993-04-07 1994-10-21 Nippon Steel Corp 耐ｃｏ２ 腐食性、耐サワー性に優れた低合金ラインパイプ用鋼板の製造方法
JPH0941083A (ja) * 1995-07-28 1997-02-10 Nkk Corp 耐ｈｉｃ及び耐ｓｓｃｃ特性に優れた電縫管及びその製造方法
JP5157030B2 (ja) * 2001-03-23 2013-03-06 Ｊｆｅスチール株式会社 耐ｈｉｃ性に優れた高強度ラインパイプ用鋼の製造方法
JP5098256B2 (ja) * 2006-08-30 2012-12-12 Ｊｆｅスチール株式会社 耐水素誘起割れ性能に優れたバウシンガー効果による降伏応力低下が小さい高強度ラインパイプ用鋼板およびその製造方法
JP5262075B2 (ja) * 2007-11-14 2013-08-14 新日鐵住金株式会社 耐サワー性能に優れた鋼管用鋼の製造方法
WO2009148193A1 (fr) * 2008-06-06 2009-12-10 新日本製鐵株式会社 Tôle d’acier à excellente résistance à l’acide et conduit d’acier pour tubes de canalisation
JP5423324B2 (ja) * 2009-02-12 2014-02-19 新日鐵住金株式会社 耐水素誘起割れ性に優れた高強度ラインパイプ用鋼板及び高強度ラインパイプ用鋼管
JP5423323B2 (ja) * 2009-02-12 2014-02-19 新日鐵住金株式会社 耐水素誘起割れ性に優れた高強度ラインパイプ用鋼板及び高強度ラインパイプ用鋼管
JP5278188B2 (ja) * 2009-06-19 2013-09-04 新日鐵住金株式会社 耐水素誘起割れ性および脆性亀裂伝播停止特性に優れた厚鋼板
JP5540982B2 (ja) * 2010-08-09 2014-07-02 新日鐵住金株式会社 耐水素誘起割れ性に優れた鋼材
JP5824401B2 (ja) * 2012-03-30 2015-11-25 株式会社神戸製鋼所 耐水素誘起割れ性に優れた鋼板およびその製造方法
EP2832879B1 (fr) * 2012-03-30 2019-11-20 Nippon Steel Corporation Tuyau d'acier à haute résistance pour tuyau de canalisation ayant une excellente résistance à la fissuration induite par hydrogène, tôle d'acier à haute résistance pour tuyau de canalisation l'utilisant et son procédé de fabrication
JP6101132B2 (ja) * 2012-04-20 2017-03-22 株式会社神戸製鋼所 耐水素誘起割れ性に優れた鋼材の製造方法
JP6211296B2 (ja) * 2013-04-30 2017-10-11 株式会社神戸製鋼所 耐サワー性とｈａｚ靭性に優れた鋼板

Patent Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP2014173892A (ja) * 2013-03-06 2014-09-22 Kobe Steel Ltd スラブにおける異なる板厚位置でのＣａ濃度分析結果を用いた耐サワー鋼スラブの品質判定方法
JP2014173893A (ja) * 2013-03-06 2014-09-22 Kobe Steel Ltd スラブにおける特定範囲の板厚位置でのＣａ濃度分析結果を用いた耐サワー鋼スラブの品質判定方法
JP2014208892A (ja) * 2013-03-29 2014-11-06 株式会社神戸製鋼所 耐水素誘起割れ性と靭性に優れた鋼板およびラインパイプ用鋼管
JP2014208891A (ja) * 2013-03-29 2014-11-06 株式会社神戸製鋼所 耐水素誘起割れ性と溶接熱影響部の靭性に優れた鋼板およびラインパイプ用鋼管
EP3018231A1 (fr) * 2013-07-01 2016-05-11 Kabushiki Kaisha Kobe Seiko Sho (Kobe Steel, Ltd.) Tôle d'acier présentant une excellente résistance aux fissurations induites par l'hydrogène et une excellente ténacité ainsi que tube d'acier pour un tube de canalisation

Non-Patent Citations (1)

* Cited by examiner, † Cited by third party
Title
See also references of WO2016104526A1 *

Also Published As

Publication number Publication date
EP3239319A1 (fr) 2017-11-01
JP2016125137A (ja) 2016-07-11
KR20170093964A (ko) 2017-08-16
CN107109566A (zh) 2017-08-29

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