EP4461838A4 - STEEL SHEET AND METHOD FOR THE PRODUCTION THEREOF - Google Patents

STEEL SHEET AND METHOD FOR THE PRODUCTION THEREOF

Info

Publication number: EP4461838A4
Authority: EP; European Patent Office
Prior art keywords: production; steel sheet; steel; sheet
Prior art date: 2022-02-03
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.): Granted

Application number

EP23749474.5A

Other languages

German (de)

French (fr)

Other versions

EP4461838A1 (en

EP4461838B1 (en

Inventor

Masaomi OKUTANI

Yusuke TERAZAWA

Hirofumi OHTSUBO

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.)

JFE Steel Corp

Original Assignee

JFE Steel Corp

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.)

2022-02-03

Filing date

2023-01-06

Publication date

2025-05-07

2023-01-06 Application filed by JFE Steel Corp filed Critical JFE Steel Corp

2024-11-13 Publication of EP4461838A1 publication Critical patent/EP4461838A1/en

2025-05-07 Publication of EP4461838A4 publication Critical patent/EP4461838A4/en

2026-03-18 Application granted granted Critical

2026-03-18 Publication of EP4461838B1 publication Critical patent/EP4461838B1/en

Status Active legal-status Critical Current

2043-01-06 Anticipated expiration legal-status Critical

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
- 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 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
- 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
- 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
- C22C38/002—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
- C22C38/02—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
- C22C38/14—Ferrous alloys, e.g. steel alloys containing titanium or zirconium
- 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
- C22C38/22—Ferrous alloys, e.g. steel alloys containing chromium with molybdenum or tungsten
- 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
- C22C38/26—Ferrous alloys, e.g. steel alloys containing chromium 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
- C22C38/42—Ferrous alloys, e.g. steel alloys containing chromium with nickel with 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
- C22C38/46—Ferrous alloys, e.g. steel alloys containing chromium with nickel with vanadium
- 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
- C21D2211/004—Dispersions; Precipitations

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)

EP23749474.5A 2022-02-03 2023-01-06 Steel plate and method of producing same Active EP4461838B1 (en)

Applications Claiming Priority (2)

Application Number	Priority Date	Filing Date	Title
JP2022015943		2022-02-03
PCT/JP2023/000227 WO2023149157A1 (en)	2022-02-03	2023-01-06	Steel sheet and method for manufacturing same

Publications (3)

Publication Number	Publication Date
EP4461838A1 EP4461838A1 (en)	2024-11-13
EP4461838A4 true EP4461838A4 (en)	2025-05-07
EP4461838B1 EP4461838B1 (en)	2026-03-18

Family

ID=87552290

Family Applications (1)

Application Number	Title	Priority Date	Filing Date
EP23749474.5A Active EP4461838B1 (en)	2022-02-03	2023-01-06	Steel plate and method of producing same

Country Status (5)

Country	Link
EP (1)	EP4461838B1 (en)
JP (1)	JP7493140B2 (en)
KR (1)	KR20240134178A (en)
CN (1)	CN118574945A (en)
WO (1)	WO2023149157A1 (en)

Families Citing this family (1)

* Cited by examiner, † Cited by third party
Publication number	Priority date	Publication date	Assignee	Title
JPWO2025182186A1 (en) *	2024-02-29	2025-09-04

Citations (2)

* Cited by examiner, † Cited by third party
Publication number	Priority date	Publication date	Assignee	Title
EP2975148A1 (en) *	2013-03-12	2016-01-20	JFE Steel Corporation	Thick steel sheet having excellent ctod properties in multilayer welded joints, and manufacturing method for thick steel sheet
EP3633057A1 (en) *	2017-05-22	2020-04-08	JFE Steel Corporation	Thick steel plate and method for manufacturing same

Family Cites Families (10)

* Cited by examiner, † Cited by third party
Publication number	Priority date	Publication date	Assignee	Title
JPS60152626A (en)	1984-01-20	1985-08-10	Kawasaki Steel Corp	Method for stabilizing toughness of high tension steel for welded structure
JPS60184663A (en)	1984-02-29	1985-09-20	Kawasaki Steel Corp	High-tensile steel for low temperature service for welding with large heat input
JPS61253344A (en)	1985-05-01	1986-11-11	Kawasaki Steel Corp	Steel plate for high heat input welding and its manufacture
JPH0344417A (en) *	1989-07-11	1991-02-26	Nippon Steel Corp	Production of thick steel plate for welded structure having excellent internal quality
JP3045856B2 (en)	1991-11-13	2000-05-29	川崎製鉄株式会社	Method for producing high toughness Cu-containing high tensile steel
JP2007302908A (en) *	2006-04-10	2007-11-22	Sumitomo Metal Ind Ltd	High-tensile steel plate and manufacturing method thereof
JP5177310B2 (en)	2011-02-15	2013-04-03	Ｊｆｅスチール株式会社	High tensile strength steel sheet with excellent low temperature toughness of weld heat affected zone and method for producing the same
US9777358B2 (en)	2012-09-06	2017-10-03	Jfe Steel Corporation	Thick-walled, high tensile strength steel with excellent CTOD characteristics of the weld heat-affected zone, and manufacturing method thereof
EP3006587B1 (en) *	2014-09-05	2019-04-24	Jfe Steel Corporation	Thick steel plate having excellent ctod properties in multi-layer welded joints and method for producing same
JP7184210B2 (en) *	2020-03-13	2022-12-06	日本製鉄株式会社	Steel plate for wind power generation facilities and method for manufacturing the same

2023
- 2023-01-06 JP JP2023524825A patent/JP7493140B2/en active Active
- 2023-01-06 KR KR1020247026669A patent/KR20240134178A/en active Pending
- 2023-01-06 CN CN202380017226.XA patent/CN118574945A/en active Pending
- 2023-01-06 WO PCT/JP2023/000227 patent/WO2023149157A1/en not_active Ceased
- 2023-01-06 EP EP23749474.5A patent/EP4461838B1/en active Active

Patent Citations (2)

* Cited by examiner, † Cited by third party
Publication number	Priority date	Publication date	Assignee	Title
EP2975148A1 (en) *	2013-03-12	2016-01-20	JFE Steel Corporation	Thick steel sheet having excellent ctod properties in multilayer welded joints, and manufacturing method for thick steel sheet
EP3633057A1 (en) *	2017-05-22	2020-04-08	JFE Steel Corporation	Thick steel plate and method for manufacturing same

Non-Patent Citations (1)

* Cited by examiner, † Cited by third party
Title
See also references of WO2023149157A1 *

Also Published As

Publication number	Publication date
WO2023149157A1 (en)	2023-08-10
KR20240134178A (en)	2024-09-06
EP4461838A1 (en)	2024-11-13
JPWO2023149157A1 (en)	2023-08-10
EP4461838B1 (en)	2026-03-18
JP7493140B2 (en)	2024-05-31
CN118574945A (en)	2024-08-30

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2025-05-07	RIC1	Information provided on ipc code assigned before grant	Ipc: C22C 38/50 20060101ALI20250401BHEP Ipc: C22C 38/46 20060101ALI20250401BHEP Ipc: C22C 38/42 20060101ALI20250401BHEP Ipc: C22C 38/26 20060101ALI20250401BHEP Ipc: C22C 38/22 20060101ALI20250401BHEP Ipc: C22C 38/16 20060101ALI20250401BHEP Ipc: C22C 38/12 20060101ALI20250401BHEP Ipc: C22C 38/08 20060101ALI20250401BHEP Ipc: C22C 38/04 20060101ALI20250401BHEP Ipc: C22C 38/02 20060101ALI20250401BHEP Ipc: C21D 9/46 20060101ALI20250401BHEP Ipc: C21D 6/00 20060101ALI20250401BHEP Ipc: C22C 38/58 20060101ALI20250401BHEP Ipc: C22C 38/14 20060101ALI20250401BHEP Ipc: C21D 8/02 20060101ALI20250401BHEP Ipc: C22C 38/00 20060101AFI20250401BHEP
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