EP4640898A4 - Tôle d'acier laminée à froid et son procédé de fabrication - Google Patents

Tôle d'acier laminée à froid et son procédé de fabrication

Info

Publication number
EP4640898A4
EP4640898A4 EP23907598.9A EP23907598A EP4640898A4 EP 4640898 A4 EP4640898 A4 EP 4640898A4 EP 23907598 A EP23907598 A EP 23907598A EP 4640898 A4 EP4640898 A4 EP 4640898A4
Authority
EP
European Patent Office
Prior art keywords
cold
production
steel sheet
rolled steel
rolled
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
EP23907598.9A
Other languages
German (de)
English (en)
Other versions
EP4640898A1 (fr
Inventor
Young-Roc Im
Chang-Hyo Seo
Sang-Hyun Kim
Ki-Taek Jung
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 EP4640898A1 publication Critical patent/EP4640898A1/fr
Publication of EP4640898A4 publication Critical patent/EP4640898A4/fr
Pending legal-status Critical Current

Links

Classifications

    • 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
    • C21D8/0221—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
    • C21D8/0236—Cold 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
    • C21D8/02—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
    • C21D8/0273—Final recrystallisation annealing
    • 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
    • C22C38/06—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
    • C22C38/22—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
    • C22C38/24—Ferrous alloys, e.g. steel alloys containing chromium 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
    • C22C38/26—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
    • C22C38/28—Ferrous alloys, e.g. steel alloys containing chromium with 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
    • C22C38/18—Ferrous alloys, e.g. steel alloys containing chromium
    • C22C38/32—Ferrous alloys, e.g. steel alloys containing chromium with boron
    • 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
    • C22C38/34—Ferrous alloys, e.g. steel alloys containing chromium with more than 1.5% by weight of 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
    • C22C38/18—Ferrous alloys, e.g. steel alloys containing chromium
    • C22C38/38—Ferrous alloys, e.g. steel alloys containing chromium 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
    • 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
    • C21D2211/008—Martensite

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 Sheet Steel (AREA)
EP23907598.9A 2022-12-20 2023-12-14 Tôle d'acier laminée à froid et son procédé de fabrication Pending EP4640898A4 (fr)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
KR1020220178997A KR20240098200A (ko) 2022-12-20 2022-12-20 냉연강판 및 그 제조방법
PCT/KR2023/020683 WO2024136312A1 (fr) 2022-12-20 2023-12-14 Tôle d'acier laminée à froid et son procédé de fabrication

Publications (2)

Publication Number Publication Date
EP4640898A1 EP4640898A1 (fr) 2025-10-29
EP4640898A4 true EP4640898A4 (fr) 2026-04-22

Family

ID=91589555

Family Applications (1)

Application Number Title Priority Date Filing Date
EP23907598.9A Pending EP4640898A4 (fr) 2022-12-20 2023-12-14 Tôle d'acier laminée à froid et son procédé de fabrication

Country Status (6)

Country Link
EP (1) EP4640898A4 (fr)
JP (1) JP2025539892A (fr)
KR (1) KR20240098200A (fr)
CN (1) CN120344699A (fr)
MX (1) MX2025006712A (fr)
WO (1) WO2024136312A1 (fr)

Citations (8)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO2013144376A1 (fr) * 2012-03-30 2013-10-03 Voestalpine Stahl Gmbh Tôle d'acier laminée à froid de haute résistance et procédé de fabrication d'une telle tôle d'acier
EP3859041A1 (fr) * 2018-09-28 2021-08-04 Posco Tôle d'acier laminée à froid à haute résistance ayant un rapport d'expansion de trou élevé, tôle d'acier galvanisée à chaud par trempe à haute résistance, et procédés de fabrication associés
US20220033926A1 (en) * 2018-09-28 2022-02-03 Posco High-strength cold rolled steel sheet having high hole expansion ratio, highstrength hot-dip galvanized steel sheet, and manufacturing methods therefor
CN114040988A (zh) * 2019-07-29 2022-02-11 Posco公司 高强度钢板及其制造方法
KR20220039234A (ko) * 2020-09-22 2022-03-29 주식회사 포스코 성형성이 우수한 고강도강판 및 그 제조방법
KR20220086202A (ko) * 2020-12-16 2022-06-23 주식회사 포스코 항복비 및 성형성이 우수한 고강도 냉연강판의 제조방법 및 이를 이용하여 제조된 고강도 냉연강판
KR102412400B1 (ko) * 2020-08-10 2022-06-24 주식회사 포스코 우수한 점용접성, 강도 및 성형성을 갖는 냉연강판 및 그 제조방법
EP4079882A1 (fr) * 2020-02-28 2022-10-26 JFE Steel Corporation Tôle d'acier, élément et procédés respectivement pour la production de ladite tôle d'acier et dudit élément

Family Cites Families (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US20220112575A1 (en) * 2019-01-22 2022-04-14 Voestalpine Stahl Gmbh A high strength high ductility complex phase cold rolled steel strip or sheet
CN115698365B (zh) * 2020-07-20 2024-03-26 安赛乐米塔尔公司 经热处理的冷轧钢板及其制造方法
KR102440757B1 (ko) * 2020-12-03 2022-09-08 주식회사 포스코 굽힘가공성이 우수한 초고강도 냉연강판 및 그 제조방법

Patent Citations (8)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO2013144376A1 (fr) * 2012-03-30 2013-10-03 Voestalpine Stahl Gmbh Tôle d'acier laminée à froid de haute résistance et procédé de fabrication d'une telle tôle d'acier
EP3859041A1 (fr) * 2018-09-28 2021-08-04 Posco Tôle d'acier laminée à froid à haute résistance ayant un rapport d'expansion de trou élevé, tôle d'acier galvanisée à chaud par trempe à haute résistance, et procédés de fabrication associés
US20220033926A1 (en) * 2018-09-28 2022-02-03 Posco High-strength cold rolled steel sheet having high hole expansion ratio, highstrength hot-dip galvanized steel sheet, and manufacturing methods therefor
CN114040988A (zh) * 2019-07-29 2022-02-11 Posco公司 高强度钢板及其制造方法
EP4079882A1 (fr) * 2020-02-28 2022-10-26 JFE Steel Corporation Tôle d'acier, élément et procédés respectivement pour la production de ladite tôle d'acier et dudit élément
KR102412400B1 (ko) * 2020-08-10 2022-06-24 주식회사 포스코 우수한 점용접성, 강도 및 성형성을 갖는 냉연강판 및 그 제조방법
KR20220039234A (ko) * 2020-09-22 2022-03-29 주식회사 포스코 성형성이 우수한 고강도강판 및 그 제조방법
KR20220086202A (ko) * 2020-12-16 2022-06-23 주식회사 포스코 항복비 및 성형성이 우수한 고강도 냉연강판의 제조방법 및 이를 이용하여 제조된 고강도 냉연강판

Non-Patent Citations (1)

* Cited by examiner, † Cited by third party
Title
See also references of WO2024136312A1 *

Also Published As

Publication number Publication date
CN120344699A (zh) 2025-07-18
WO2024136312A1 (fr) 2024-06-27
MX2025006712A (es) 2025-09-02
EP4640898A1 (fr) 2025-10-29
KR20240098200A (ko) 2024-06-28
JP2025539892A (ja) 2025-12-09

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