EP3730640A4 - Plaque d'acier épaisse possédant une excellente résistance au froid et son procédé de fabrication - Google Patents

Plaque d'acier épaisse possédant une excellente résistance au froid et son procédé de fabrication Download PDF

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Publication number
EP3730640A4
EP3730640A4 EP18890536.8A EP18890536A EP3730640A4 EP 3730640 A4 EP3730640 A4 EP 3730640A4 EP 18890536 A EP18890536 A EP 18890536A EP 3730640 A4 EP3730640 A4 EP 3730640A4
Authority
EP
European Patent Office
Prior art keywords
manufacturing
steel plate
method therefor
thick steel
excellent low
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.)
Pending
Application number
EP18890536.8A
Other languages
German (de)
English (en)
Other versions
EP3730640A1 (fr
Inventor
Woo-Gyeom KIM
Kyung-Keun Um
Ki-Hyun Bang
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.)
Posco Holdings Inc
Original Assignee
Posco Co 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 Posco Co Ltd filed Critical Posco Co Ltd
Publication of EP3730640A4 publication Critical patent/EP3730640A4/fr
Publication of EP3730640A1 publication Critical patent/EP3730640A1/fr
Pending legal-status Critical Current

Links

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
    • C22C38/04—Ferrous alloys, e.g. steel alloys containing 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
    • C21D6/00—Heat treatment of ferrous alloys
    • C21D6/005—Heat treatment of ferrous alloys containing Mn
    • 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 by deformation combined with, or followed by, heat treatment
    • C21D8/02—Modifying the physical properties by deformation combined with, or followed by, heat treatment during manufacturing of plates or strips
    • 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 by deformation combined with, or followed by, heat treatment
    • C21D8/02—Modifying the physical properties by deformation combined with, or followed by, heat treatment during manufacturing of plates or strips
    • C21D8/0205—Modifying the physical properties by deformation combined with, or followed by, heat treatment during manufacturing of plates or strips of ferrous alloys
    • 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 by deformation combined with, or followed by, heat treatment
    • C21D8/02—Modifying the physical properties by deformation combined with, or followed by, heat treatment during manufacturing of plates or strips
    • C21D8/0221—Modifying the physical properties 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
    • C21D9/00—Heat treatment, e.g. annealing, hardening, quenching or tempering, adapted for particular articles; Furnaces therefor
    • C21D9/46—Heat treatment, e.g. annealing, hardening, quenching or tempering, adapted for particular articles; Furnaces therefor for sheet metals
    • 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
    • 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
    • C22C38/02—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
    • C22C38/06—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
    • C22C38/14—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
    • C21D2211/00—Microstructure comprising significant phases
    • C21D2211/003—Cementite
    • 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
    • C21D2211/00—Microstructure comprising significant phases
    • C21D2211/005—Ferrite

Landscapes

  • Chemical & Material Sciences (AREA)
  • Engineering & Computer Science (AREA)
  • Materials Engineering (AREA)
  • Mechanical Engineering (AREA)
  • Metallurgy (AREA)
  • Organic Chemistry (AREA)
  • Physics & Mathematics (AREA)
  • Thermal Sciences (AREA)
  • Crystallography & Structural Chemistry (AREA)
  • Heat Treatment Of Steel (AREA)
EP18890536.8A 2017-12-24 2018-12-14 Plaque d'acier épaisse possédant une excellente résistance au froid et son procédé de fabrication Pending EP3730640A1 (fr)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
KR1020170178949A KR101999018B1 (ko) 2017-12-24 2017-12-24 저온인성이 우수한 후강판 및 그 제조방법
PCT/KR2018/015950 WO2019124890A1 (fr) 2017-12-24 2018-12-14 Plaque d'acier épaisse possédant une excellente résistance au froid et son procédé de fabrication

Publications (2)

Publication Number Publication Date
EP3730640A4 true EP3730640A4 (fr) 2020-10-28
EP3730640A1 EP3730640A1 (fr) 2020-10-28

Family

ID=66994972

Family Applications (1)

Application Number Title Priority Date Filing Date
EP18890536.8A Pending EP3730640A1 (fr) 2017-12-24 2018-12-14 Plaque d'acier épaisse possédant une excellente résistance au froid et son procédé de fabrication

Country Status (5)

Country Link
EP (1) EP3730640A1 (fr)
JP (1) JP7064597B2 (fr)
KR (1) KR101999018B1 (fr)
CN (1) CN111511950A (fr)
WO (1) WO2019124890A1 (fr)

Families Citing this family (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
KR102218423B1 (ko) * 2019-08-23 2021-02-19 주식회사 포스코 저온인성 및 ctod 특성이 우수한 박물 강재 및 그 제조방법
CN113201691B (zh) * 2021-04-28 2022-03-22 攀钢集团攀枝花钢铁研究院有限公司 590MPa级液压胀形用热轧钢板及其制备方法
CN114686776B (zh) * 2022-03-31 2022-10-18 鞍钢股份有限公司 一种460MPa级高韧性特厚板及其制造方法
CN116162855B (zh) * 2023-02-28 2024-01-30 马鞍山钢铁股份有限公司 一种600MPa级厚规格含磷热轧耐候钢板及其制造方法

Citations (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
KR100957970B1 (ko) * 2007-12-27 2010-05-17 주식회사 포스코 후물 고강도 고인성 강판 및 그 제조방법
US20130206289A1 (en) * 2010-08-10 2013-08-15 Jfe Steel Corporation High-strength hot-rolled steel sheet having excellent formability and method for manufacturing the same
KR20160078624A (ko) * 2014-12-24 2016-07-05 주식회사 포스코 저온인성 및 강도가 우수한 강관용 열연강판 및 그 제조방법
KR20160147153A (ko) * 2015-06-12 2016-12-22 동국제강주식회사 라인파이프용 고강도 후강판 제조 방법 및 이에 의해 제조된 라인파인프용 고강도 후강판
WO2017111526A1 (fr) * 2015-12-23 2017-06-29 주식회사 포스코 Acier à haute résistance et à faible taux d'élasticité présentant une excellente résistance à la fissuration par corrosion sous contrainte et une excellente ténacité à basse température
WO2017111443A1 (fr) * 2015-12-23 2017-06-29 주식회사 포스코 Tôle d'acier structural haute résistance présentant une excellente résistance à chaud et son procédé de fabrication

Family Cites Families (17)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPH0649898B2 (ja) * 1986-01-24 1994-06-29 株式会社神戸製鋼所 溶接熱影響部の靭性に優れた低温用高降伏点鋼の製造方法
JPS62256916A (ja) * 1986-04-28 1987-11-09 Kobe Steel Ltd 板厚方向の均質性が優れた低温用極厚鋼板の製造方法
KR100660230B1 (ko) * 2005-12-26 2006-12-21 주식회사 포스코 두께 중심부의 강도와 인성이 우수한 용접구조용 극후물강판 및 그 제조방법
JP4976749B2 (ja) * 2006-06-02 2012-07-18 株式会社神戸製鋼所 耐疲労亀裂進展性に優れた鋼板
CN101705439B (zh) * 2009-12-18 2011-12-21 江苏省沙钢钢铁研究院有限公司 低温高韧性f460级超高强度造船用钢板及其制造方法
KR101185336B1 (ko) * 2010-07-28 2012-09-21 현대제철 주식회사 저온 충격인성이 우수한 500ＭＰａ급 고강도 후판 및 그 제조 방법
JP5612532B2 (ja) * 2011-04-26 2014-10-22 株式会社神戸製鋼所 低温靭性および溶接継手破壊靭性に優れた鋼板およびその製造方法
KR101403224B1 (ko) * 2011-12-28 2014-06-02 주식회사 포스코 저항복비 특성 및 저온인성이 우수한 후 강판 및 그 제조방법
JP5833964B2 (ja) * 2012-03-29 2015-12-16 株式会社神戸製鋼所 曲げ加工性、衝撃特性および引張特性に優れた鋼板およびその製造方法
US10227683B2 (en) * 2012-03-30 2019-03-12 Voestalpine Stahl Gmbh High strength cold rolled steel sheet
JP5811032B2 (ja) * 2012-05-23 2015-11-11 新日鐵住金株式会社 Ｌｐｇタンク用鋼板
KR20150002956A (ko) * 2013-06-27 2015-01-08 현대제철 주식회사 라인파이프용 후강판 및 그 제조 방법
KR101647226B1 (ko) * 2014-12-24 2016-08-10 주식회사 포스코 파괴전파 저항성 및 항복비 특성이 우수한 강재 및 그 제조방법
JP6763141B2 (ja) * 2015-02-10 2020-09-30 日本製鉄株式会社 Ｌｐｇタンク用鋼板の製造方法
KR20160150190A (ko) * 2015-06-18 2016-12-29 현대제철 주식회사 후판 제조방법 및 이에 의해 제조된 후판
KR101786258B1 (ko) 2015-12-23 2017-10-18 주식회사 포스코 용접 열영향부 인성이 우수한 고강도 강판 및 그 제조방법
CN107502821B (zh) * 2017-08-29 2019-06-25 江阴兴澄特种钢铁有限公司 一种特厚规格超低温环境下使用的经济型x70管线钢板及其制造方法

Patent Citations (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
KR100957970B1 (ko) * 2007-12-27 2010-05-17 주식회사 포스코 후물 고강도 고인성 강판 및 그 제조방법
US20130206289A1 (en) * 2010-08-10 2013-08-15 Jfe Steel Corporation High-strength hot-rolled steel sheet having excellent formability and method for manufacturing the same
KR20160078624A (ko) * 2014-12-24 2016-07-05 주식회사 포스코 저온인성 및 강도가 우수한 강관용 열연강판 및 그 제조방법
KR20160147153A (ko) * 2015-06-12 2016-12-22 동국제강주식회사 라인파이프용 고강도 후강판 제조 방법 및 이에 의해 제조된 라인파인프용 고강도 후강판
WO2017111526A1 (fr) * 2015-12-23 2017-06-29 주식회사 포스코 Acier à haute résistance et à faible taux d'élasticité présentant une excellente résistance à la fissuration par corrosion sous contrainte et une excellente ténacité à basse température
WO2017111443A1 (fr) * 2015-12-23 2017-06-29 주식회사 포스코 Tôle d'acier structural haute résistance présentant une excellente résistance à chaud et son procédé de fabrication

Non-Patent Citations (1)

* Cited by examiner, † Cited by third party
Title
See also references of WO2019124890A1 *

Also Published As

Publication number Publication date
WO2019124890A1 (fr) 2019-06-27
JP2021507118A (ja) 2021-02-22
EP3730640A1 (fr) 2020-10-28
JP7064597B2 (ja) 2022-05-10
KR20190077196A (ko) 2019-07-03
KR101999018B1 (ko) 2019-07-10
CN111511950A (zh) 2020-08-07

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