EP4265795A4 - Plaque d'acier ultra-épaisse ayant une excellente ténacité à l'impact à basse température et son procédé de fabrication - Google Patents

Plaque d'acier ultra-épaisse ayant une excellente ténacité à l'impact à basse température et son procédé de fabrication

Info

Publication number
EP4265795A4
EP4265795A4 EP21906913.5A EP21906913A EP4265795A4 EP 4265795 A4 EP4265795 A4 EP 4265795A4 EP 21906913 A EP21906913 A EP 21906913A EP 4265795 A4 EP4265795 A4 EP 4265795A4
Authority
EP
European Patent Office
Prior art keywords
ultra
producing
steel plate
same
impact strength
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
EP21906913.5A
Other languages
German (de)
English (en)
Other versions
EP4265795A1 (fr
Inventor
Woo-Gyeom Kim
Sang-Ho Kim
Dae-Woo Baek
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 EP4265795A1 publication Critical patent/EP4265795A1/fr
Publication of EP4265795A4 publication Critical patent/EP4265795A4/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
    • C22C38/18—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
    • C21D1/02—Hardening articles or materials formed by forging or rolling, with no further heating beyond that required for the formation
    • 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
    • C21D8/04—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 to produce plates or strips for drawing, e.g. for deep-drawing
    • C21D8/0421—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 to produce plates or strips for drawing, e.g. for deep-drawing 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
    • 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
    • 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
    • C22C38/18—Ferrous alloys, e.g. steel alloys containing chromium
    • C22C38/40—Ferrous alloys, e.g. steel alloys containing chromium with nickel
    • C22C38/48—Ferrous alloys, e.g. steel alloys containing chromium with nickel with niobium or tantalum
    • 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
    • C22C38/50—Ferrous alloys, e.g. steel alloys containing chromium with nickel with 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
    • C21D2211/001—Austenite
    • 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
    • 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
    • C21D2211/009—Pearlite

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)
EP21906913.5A 2020-12-15 2021-11-25 Plaque d'acier ultra-épaisse ayant une excellente ténacité à l'impact à basse température et son procédé de fabrication Pending EP4265795A4 (fr)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
KR1020200175751A KR102498134B1 (ko) 2020-12-15 2020-12-15 저온 충격인성이 우수한 극후물 강판 및 이의 제조방법
PCT/KR2021/017472 WO2022131608A1 (fr) 2020-12-15 2021-11-25 Plaque d'acier ultra-épaisse ayant une excellente ténacité à l'impact à basse température et son procédé de fabrication

Publications (2)

Publication Number Publication Date
EP4265795A1 EP4265795A1 (fr) 2023-10-25
EP4265795A4 true EP4265795A4 (fr) 2025-07-30

Family

ID=82059669

Family Applications (1)

Application Number Title Priority Date Filing Date
EP21906913.5A Pending EP4265795A4 (fr) 2020-12-15 2021-11-25 Plaque d'acier ultra-épaisse ayant une excellente ténacité à l'impact à basse température et son procédé de fabrication

Country Status (4)

Country Link
EP (1) EP4265795A4 (fr)
KR (1) KR102498134B1 (fr)
CN (1) CN116568847B (fr)
WO (1) WO2022131608A1 (fr)

Citations (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP2016125077A (ja) * 2014-12-26 2016-07-11 新日鐵住金株式会社 高強度高延性厚板鋼板とその製造方法
EP3395998A1 (fr) * 2015-12-21 2018-10-31 Posco Tôle d'acier épaisse présentant une ténacité à basse température et une résistance à la fissuration induite par hydrogène excellentes, et son procédé de fabrication

Family Cites Families (12)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP3849244B2 (ja) * 1997-09-16 2006-11-22 Ｊｆｅスチール株式会社 繰返し大変形下での延性き裂進展抵抗の優れた鋼材及びその製造方法
JP4329583B2 (ja) * 2004-03-17 2009-09-09 Ｊｆｅスチール株式会社 耐震性に優れた低降伏比ｈ形鋼およびその製造方法
KR101417231B1 (ko) * 2011-12-28 2014-07-08 주식회사 포스코 저온인성 및 인장특성이 우수한 압력용기용 극후강판 및 그 제조 방법
KR101435258B1 (ko) 2012-06-28 2014-09-24 현대제철 주식회사 강재 제조 방법
KR101568532B1 (ko) * 2013-12-24 2015-11-11 주식회사 포스코 고온 항복강도 및 저온 충격인성이 우수한 후강판 및 이의 제조방법
JP5994819B2 (ja) * 2014-05-30 2016-09-21 新日鐵住金株式会社 耐衝撃性に優れた鋼板及びその製造方法
WO2017047088A1 (fr) * 2015-09-18 2017-03-23 Ｊｆｅスチール株式会社 Tôle d'acier épaisse à haute résistance pour une utilisation structurale et son procédé de fabrication
KR102020434B1 (ko) * 2017-12-01 2019-09-10 주식회사 포스코 수소 유기 균열 저항성 및 저온 충격인성이 우수한 고강도 강재 및 그 제조방법
KR102153170B1 (ko) * 2018-08-08 2020-10-26 주식회사 포스코 강도 및 dwtt 저온인성이 우수한 극후물 열연강판 및 그 제조방법
KR102109277B1 (ko) * 2018-10-26 2020-05-11 주식회사 포스코 용접열영향부 인성이 우수한 저항복비 강재 및 그 제조방법
CN109182919B (zh) * 2018-11-22 2020-06-12 湖南华菱湘潭钢铁有限公司 一种多相组织高韧性船板钢eh47的生产方法
KR102164107B1 (ko) * 2018-11-30 2020-10-13 주식회사 포스코 저온파괴인성 및 연신율이 우수한 고강도 강판 및 그 제조방법

Patent Citations (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP2016125077A (ja) * 2014-12-26 2016-07-11 新日鐵住金株式会社 高強度高延性厚板鋼板とその製造方法
EP3395998A1 (fr) * 2015-12-21 2018-10-31 Posco Tôle d'acier épaisse présentant une ténacité à basse température et une résistance à la fissuration induite par hydrogène excellentes, et son procédé de fabrication

Non-Patent Citations (1)

* Cited by examiner, † Cited by third party
Title
See also references of WO2022131608A1 *

Also Published As

Publication number Publication date
KR102498134B1 (ko) 2023-02-08
CN116568847B (zh) 2025-09-02
CN116568847A (zh) 2023-08-08
EP4265795A1 (fr) 2023-10-25
KR20220085575A (ko) 2022-06-22
WO2022131608A1 (fr) 2022-06-23

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