EP4265795A4 - Ultra-thick steel plate with excellent low-temperature impact strength and method for producing the same - Google Patents

Ultra-thick steel plate with excellent low-temperature impact strength and method for producing the same

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)
French (fr)
Other versions
EP4265795A1 (en
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/en
Publication of EP4265795A4 publication Critical patent/EP4265795A4/en
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 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
    • 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
    • C21D8/04—Modifying the physical properties by deformation combined with, or followed by, heat treatment during manufacturing of plates or strips to produce plates or strips for deep-drawing
    • C21D8/0421—Modifying the physical properties by deformation combined with, or followed by, heat treatment during manufacturing of plates or strips to produce plates or strips 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)
  • Mechanical Engineering (AREA)
  • Materials 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 Ultra-thick steel plate with excellent low-temperature impact strength and method for producing the same Pending EP4265795A4 (en)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
KR1020200175751A KR102498134B1 (en) 2020-12-15 2020-12-15 Ultra-thick steel plate having excellent low-temperature impact toughness and method for manufacturing thereof
PCT/KR2021/017472 WO2022131608A1 (en) 2020-12-15 2021-11-25 Ultrathick steel plate having excellent low-temperature impact toughness and method for manufacturing same

Publications (2)

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

Family

ID=82059669

Family Applications (1)

Application Number Title Priority Date Filing Date
EP21906913.5A Pending EP4265795A4 (en) 2020-12-15 2021-11-25 Ultra-thick steel plate with excellent low-temperature impact strength and method for producing the same

Country Status (4)

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

Citations (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP2016125077A (en) * 2014-12-26 2016-07-11 新日鐵住金株式会社 High-strength and high-ductility thick steel plate and production method thereof
EP3395998A1 (en) * 2015-12-21 2018-10-31 Posco Thick steel plate having excellent low-temperature toughness and hydrogen-induced cracking resistance, and method for manufacturing same

Family Cites Families (12)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP3849244B2 (en) * 1997-09-16 2006-11-22 Ｊｆｅスチール株式会社 Steel material excellent in ductile crack growth resistance under repeated large deformation and its manufacturing method
JP4329583B2 (en) * 2004-03-17 2009-09-09 Ｊｆｅスチール株式会社 Low yield ratio H-section steel excellent in earthquake resistance and manufacturing method thereof
KR101417231B1 (en) * 2011-12-28 2014-07-08 주식회사 포스코 Ultra heavy steel plate for pressure vessel with excellent low-temperature toughness and tensile property and manufacturing method of the same
KR101435258B1 (en) 2012-06-28 2014-09-24 현대제철 주식회사 Method for manufacturing of steel plate
KR101568532B1 (en) * 2013-12-24 2015-11-11 주식회사 포스코 Thick steel sheet having excellent high temperature yield strength and low-temperature toughness, and method for manufacturing the same
JP5994819B2 (en) * 2014-05-30 2016-09-21 新日鐵住金株式会社 Steel plate with excellent impact resistance and method for producing the same
JP6245384B2 (en) * 2015-09-18 2017-12-13 Ｊｆｅスチール株式会社 Structural high-strength thick steel plate and method for producing the same
KR102020434B1 (en) * 2017-12-01 2019-09-10 주식회사 포스코 Steel material having exellent hydrogen induced crack resistance and low temperature impact toughness and method of manufacturing the same
KR102153170B1 (en) * 2018-08-08 2020-10-26 주식회사 포스코 Ultra heavy gauge hot rolled steel plate having excellent strength and high DWTT toughness at low temperature and method for manufacturing thereof
KR102109277B1 (en) * 2018-10-26 2020-05-11 주식회사 포스코 Steel plate having low yield ratio and excellent heat affected zone toughness and method for manufacturing thereof
CN109182919B (en) * 2018-11-22 2020-06-12 湖南华菱湘潭钢铁有限公司 Production method of multiphase structure high-toughness ship plate steel EH47
KR102164107B1 (en) * 2018-11-30 2020-10-13 주식회사 포스코 High strength steel plate having superior elongation percentage and excellent low-temperature toughness, and manufacturing method for the same

Patent Citations (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP2016125077A (en) * 2014-12-26 2016-07-11 新日鐵住金株式会社 High-strength and high-ductility thick steel plate and production method thereof
EP3395998A1 (en) * 2015-12-21 2018-10-31 Posco Thick steel plate having excellent low-temperature toughness and hydrogen-induced cracking resistance, and method for manufacturing same

Non-Patent Citations (1)

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

Also Published As

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

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