EP4407058A4 - Tôle d'acier haute résistance laminée à froid présentant une excellente qualité de surface et un faible écart de propriété mécanique et son procédé de fabrication - Google Patents

Tôle d'acier haute résistance laminée à froid présentant une excellente qualité de surface et un faible écart de propriété mécanique et son procédé de fabrication

Info

Publication number
EP4407058A4
EP4407058A4 EP22873153.5A EP22873153A EP4407058A4 EP 4407058 A4 EP4407058 A4 EP 4407058A4 EP 22873153 A EP22873153 A EP 22873153A EP 4407058 A4 EP4407058 A4 EP 4407058A4
Authority
EP
European Patent Office
Prior art keywords
steel sheet
mechanical properties
rolled steel
manufacturing processes
surface quality
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
EP22873153.5A
Other languages
German (de)
English (en)
Other versions
EP4407058A1 (fr
Inventor
Joo-Hyun Ryu
Sung-Il Kim
Chang-Hyo Seo
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 EP4407058A1 publication Critical patent/EP4407058A1/fr
Publication of EP4407058A4 publication Critical patent/EP4407058A4/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
    • C22C38/02—Ferrous alloys, e.g. steel alloys containing silicon
    • 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
    • C21D1/18—Hardening; Quenching with or without subsequent tempering
    • 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
    • C21D8/0221—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
    • 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
    • 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
    • C22C38/002—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
    • C22C38/04—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
    • C22C38/12—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
    • C22C38/18—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
    • C22C38/32—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
    • C22C38/38—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
    • C21D2211/002—Bainite
    • 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
    • C21D2211/008—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)
EP22873153.5A 2021-09-24 2022-09-20 Tôle d'acier haute résistance laminée à froid présentant une excellente qualité de surface et un faible écart de propriété mécanique et son procédé de fabrication Pending EP4407058A4 (fr)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
KR1020210126115A KR20230043352A (ko) 2021-09-24 2021-09-24 표면 품질이 우수하고 재질 편차가 적은 고강도 냉연강판 및 이의 제조 방법
PCT/KR2022/014012 WO2023048448A1 (fr) 2021-09-24 2022-09-20 Tôle d'acier haute résistance laminée à froid présentant une excellente qualité de surface et un faible écart de propriété mécanique et son procédé de fabrication

Publications (2)

Publication Number Publication Date
EP4407058A1 EP4407058A1 (fr) 2024-07-31
EP4407058A4 true EP4407058A4 (fr) 2025-10-29

Family

ID=85720915

Family Applications (1)

Application Number Title Priority Date Filing Date
EP22873153.5A Pending EP4407058A4 (fr) 2021-09-24 2022-09-20 Tôle d'acier haute résistance laminée à froid présentant une excellente qualité de surface et un faible écart de propriété mécanique et son procédé de fabrication

Country Status (7)

Country Link
US (1) US20240247349A1 (fr)
EP (1) EP4407058A4 (fr)
JP (1) JP2024535899A (fr)
KR (1) KR20230043352A (fr)
CN (1) CN118019871A (fr)
MX (1) MX2024003556A (fr)
WO (1) WO2023048448A1 (fr)

Families Citing this family (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
KR20250093772A (ko) * 2023-12-15 2025-06-25 주식회사 포스코 냉연강판 및 그 제조방법
JP2026069383A (ja) * 2024-10-11 2026-04-23 東洋鋼鈑株式会社 鋼板コイルのバッチ焼鈍方法及び冷延鋼板

Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP2799568A1 (fr) * 2011-12-26 2014-11-05 JFE Steel Corporation Fine tôle d'acier à haute résistance et son procédé de fabrication
JP2015175061A (ja) * 2014-03-18 2015-10-05 新日鐵住金株式会社 引張最大強度７８０ＭＰａを有する衝突特性に優れた高強度鋼板、高強度溶融亜鉛めっき鋼板、並びに、高強度合金化溶融亜鉛めっき鋼板とそれらの製造方法。
WO2016194272A1 (fr) * 2015-05-29 2016-12-08 Ｊｆｅスチール株式会社 Tôle en acier laminée à froid hautement résistante, tôle en acier plaquée hautement résistante, et procédés de fabrication de celles-ci
JP2020019992A (ja) * 2018-07-31 2020-02-06 Ｊｆｅスチール株式会社 薄鋼板及びその製造方法
KR20210080664A (ko) * 2019-12-20 2021-07-01 주식회사 포스코 연성 및 가공성이 우수한 강판 및 이의 제조방법

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ATE388249T1 (de) 2002-06-25 2008-03-15 Jfe Steel Corp Hochfestes katlgewalztes stahlblech und herstellunsgverfahren dafür
JP5359168B2 (ja) 2008-10-08 2013-12-04 Ｊｆｅスチール株式会社 延性に優れる超高強度冷延鋼板およびその製造方法
JP4737319B2 (ja) * 2009-06-17 2011-07-27 Ｊｆｅスチール株式会社 加工性および耐疲労特性に優れた高強度合金化溶融亜鉛めっき鋼板およびその製造方法
EP2803747B1 (fr) * 2012-01-13 2019-03-27 Nippon Steel & Sumitomo Metal Corporation Tôle d'acier laminée à froid et procédé de production d'une tôle d'acier laminée à froid
PL2803744T3 (pl) * 2012-01-13 2018-11-30 Nippon Steel & Sumitomo Metal Corporation Blacha stalowa cienka walcowana na zimno i sposób jej wytwarzania
JP5825185B2 (ja) * 2012-04-18 2015-12-02 新日鐵住金株式会社 冷延鋼板およびその製造方法
JP5860345B2 (ja) * 2012-05-31 2016-02-16 株式会社神戸製鋼所 機械的特性ばらつきの小さい高強度冷延鋼板およびその製造方法
JP6586776B2 (ja) * 2015-05-26 2019-10-09 日本製鉄株式会社 成形性に優れた高強度鋼板及びその製造方法
WO2017002883A1 (fr) * 2015-06-30 2017-01-05 新日鐵住金株式会社 Tôle d'acier laminée à froid de haute résistance, tôle d'acier galvanisée de haute résistance et tôle d'acier recuite après galvanisation de haute résistance
CN108431268B (zh) * 2015-12-23 2020-12-18 Posco公司 延展性、孔加工性和表面处理特性优异的高强度冷轧钢板、热浸镀锌钢板及其制造方法
WO2019151017A1 (fr) * 2018-01-31 2019-08-08 Ｊｆｅスチール株式会社 Tôle d'acier laminée à froid à haute résistance, tôle d'acier plaquée à haute résistance, et leurs procédés de production
US12241137B2 (en) * 2019-01-09 2025-03-04 Jfe Steel Corporation High-strength cold-rolled steel sheet and production method for same
MX2021010461A (es) * 2019-03-29 2021-09-21 Nippon Steel Corp Lamina de acero y metodo de produccion de la misma.
CN113614256B (zh) * 2019-04-11 2023-03-21 日本制铁株式会社 钢板及其制造方法
WO2020209276A1 (fr) * 2019-04-11 2020-10-15 日本製鉄株式会社 Tôle d'acier et procédé de production associé
JP7136061B2 (ja) * 2019-10-11 2022-09-13 Ｊｆｅスチール株式会社 高強度熱延鋼板及びその製造方法
KR102389281B1 (ko) * 2019-12-20 2022-04-21 주식회사 포스코 강도 및 단면 감소율 편차가 균일한 선재 및 그 제조방법

Patent Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP2799568A1 (fr) * 2011-12-26 2014-11-05 JFE Steel Corporation Fine tôle d'acier à haute résistance et son procédé de fabrication
JP2015175061A (ja) * 2014-03-18 2015-10-05 新日鐵住金株式会社 引張最大強度７８０ＭＰａを有する衝突特性に優れた高強度鋼板、高強度溶融亜鉛めっき鋼板、並びに、高強度合金化溶融亜鉛めっき鋼板とそれらの製造方法。
WO2016194272A1 (fr) * 2015-05-29 2016-12-08 Ｊｆｅスチール株式会社 Tôle en acier laminée à froid hautement résistante, tôle en acier plaquée hautement résistante, et procédés de fabrication de celles-ci
JP2020019992A (ja) * 2018-07-31 2020-02-06 Ｊｆｅスチール株式会社 薄鋼板及びその製造方法
KR20210080664A (ko) * 2019-12-20 2021-07-01 주식회사 포스코 연성 및 가공성이 우수한 강판 및 이의 제조방법

Non-Patent Citations (1)

* Cited by examiner, † Cited by third party
Title
See also references of WO2023048448A1 *

Also Published As

Publication number Publication date
KR20230043352A (ko) 2023-03-31
WO2023048448A1 (fr) 2023-03-30
US20240247349A1 (en) 2024-07-25
JP2024535899A (ja) 2024-10-02
EP4407058A1 (fr) 2024-07-31
CN118019871A (zh) 2024-05-10
MX2024003556A (es) 2024-06-19

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