EP4545665A4 - Cold-rolled steel sheet to 1,03,0 MPa or higher and manufacturing process therefor - Google Patents

Cold-rolled steel sheet to 1,03,0 MPa or higher and manufacturing process therefor

Info

Publication number
EP4545665A4
EP4545665A4 EP23826384.2A EP23826384A EP4545665A4 EP 4545665 A4 EP4545665 A4 EP 4545665A4 EP 23826384 A EP23826384 A EP 23826384A EP 4545665 A4 EP4545665 A4 EP 4545665A4
Authority
EP
European Patent Office
Prior art keywords
mpa
cold
manufacturing process
steel sheet
rolled steel
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
EP23826384.2A
Other languages
German (de)
French (fr)
Other versions
EP4545665A1 (en
Inventor
Peng Xue
Xiaodong Zhu
Wei Li
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.)
Baoshan Iron and Steel Co Ltd
Original Assignee
Baoshan Iron and Steel 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 Baoshan Iron and Steel Co Ltd filed Critical Baoshan Iron and Steel Co Ltd
Publication of EP4545665A1 publication Critical patent/EP4545665A1/en
Publication of EP4545665A4 publication Critical patent/EP4545665A4/en
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
    • 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
    • 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
    • C21D1/19—Hardening; Quenching with or without subsequent tempering by interrupted quenching
    • C21D1/20—Isothermal quenching, e.g. bainitic hardening
    • 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
    • C21D1/26—Methods of 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
    • 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
    • C21D8/0221—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
    • C21D8/0242—Flattening; Dressing; Flexing
    • 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
    • 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
    • C22C38/14—Ferrous alloys, e.g. steel alloys containing 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
    • C21D2211/002—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
    • C21D2211/008—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)
  • Heat Treatment Of Steel (AREA)
EP23826384.2A 2022-06-22 2023-06-20 Cold-rolled steel sheet to 1,03,0 MPa or higher and manufacturing process therefor Pending EP4545665A4 (en)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
CN202210711325.5A CN117305683B (en) 2022-06-22 2022-06-22 Cold-rolled steel plate with grade of 1300MPa or more and manufacturing method thereof
PCT/CN2023/101256 WO2023246737A1 (en) 2022-06-22 2023-06-20 1300-mpa-grade-or-higher cold-rolled steel sheet and manufacturing method therefor

Publications (2)

Publication Number Publication Date
EP4545665A1 EP4545665A1 (en) 2025-04-30
EP4545665A4 true EP4545665A4 (en) 2025-09-03

Family

ID=89241264

Family Applications (1)

Application Number Title Priority Date Filing Date
EP23826384.2A Pending EP4545665A4 (en) 2022-06-22 2023-06-20 Cold-rolled steel sheet to 1,03,0 MPa or higher and manufacturing process therefor

Country Status (4)

Country Link
EP (1) EP4545665A4 (en)
JP (1) JP2025521343A (en)
CN (1) CN117305683B (en)
WO (1) WO2023246737A1 (en)

Families Citing this family (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN121204517A (en) * 2024-06-26 2025-12-26 宝山钢铁股份有限公司 A 1300MPa grade ultra-high strength steel with low yield strength ratio and its manufacturing method

Citations (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP2716782A1 (en) * 2011-05-25 2014-04-09 Nippon Steel & Sumitomo Metal Corporation Cold-rolled steel sheet and method for producing same
WO2017131056A1 (en) * 2016-01-27 2017-08-03 Ｊｆｅスチール株式会社 High-yield ratio high-strength galvanized steel sheet, and method for producing same
WO2018030500A1 (en) * 2016-08-10 2018-02-15 Ｊｆｅスチール株式会社 High-strength thin steel sheet and method for manufacturing same
CN109642294A (en) * 2016-09-28 2019-04-16 杰富意钢铁株式会社 Steel plate and its manufacturing method
CN111647732A (en) * 2020-05-11 2020-09-11 首钢集团有限公司 A kind of 1300MPa grade multiphase steel, its preparation method and its application
CN113737087A (en) * 2020-05-27 2021-12-03 宝山钢铁股份有限公司 Ultrahigh-strength dual-phase steel and manufacturing method thereof

Family Cites Families (16)

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Publication number Priority date Publication date Assignee Title
JP5365216B2 (en) * 2008-01-31 2013-12-11 Ｊｆｅスチール株式会社 High-strength steel sheet and its manufacturing method
JP4947176B2 (en) * 2010-03-24 2012-06-06 Ｊｆｅスチール株式会社 Manufacturing method of ultra-high strength cold-rolled steel sheet
EP2524970A1 (en) * 2011-05-18 2012-11-21 ThyssenKrupp Steel Europe AG Extremely stable steel flat product and method for its production
CN102321841B (en) 2011-10-08 2013-03-27 攀钢集团攀枝花钢铁研究院有限公司 Track shoe steel with tensile strength of up to 1300 MPa and manufacturing method thereof
CN102776438A (en) 2012-08-27 2012-11-14 内蒙古包钢钢联股份有限公司 Niobium-lanthanum microalloying Mn-B series superstrength steel plate and heat treatment technology thereof
CN103757530B (en) * 2014-01-24 2016-08-24 宝山钢铁股份有限公司 The thin strap continuous casting economy ultra-high strength package binding band of tensile strength >=1250MPa and manufacture method thereof
JP6344538B1 (en) * 2017-09-19 2018-06-20 新日鐵住金株式会社 Steel pipe and steel plate
KR102418275B1 (en) * 2017-12-26 2022-07-07 제이에프이 스틸 가부시키가이샤 High-strength cold-rolled steel sheet and method for manufacturing same
CN109207847B (en) * 2018-08-28 2021-03-12 宝山钢铁股份有限公司 Low-carbon equivalent high-hole-expansion-rate 1180 MPa-grade cold-rolled steel plate and manufacturing method thereof
CN111041382A (en) * 2019-12-03 2020-04-21 马鞍山钢铁股份有限公司 A kind of 1800MPa grade uncoated hot forming steel with low and high temperature friction coefficient and preparation method thereof
KR102250333B1 (en) * 2019-12-09 2021-05-10 현대제철 주식회사 Ultra high strength cold rolled steel sheet and manufacturing method thereof
US12378625B2 (en) * 2020-01-31 2025-08-05 Jfe Steel Corporation Steel sheet, member, and production methods therefor
CN117062934B (en) * 2021-03-31 2026-05-12 杰富意钢铁株式会社 Steel sheet, component, and method for producing same
CN113122783A (en) * 2021-04-23 2021-07-16 唐山全丰薄板有限公司 1300 MPa-grade ultrahigh-strength cold-rolled steel plate for automobiles and manufacturing method thereof
CN113403529B (en) * 2021-05-21 2022-07-19 鞍钢股份有限公司 1470 MPa-level alloyed galvanized steel plate for cold stamping and preparation method thereof
KR20240144323A (en) * 2022-03-24 2024-10-02 제이에프이 스틸 가부시키가이샤 Sheet metal and its components, and their manufacturing methods

Patent Citations (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP2716782A1 (en) * 2011-05-25 2014-04-09 Nippon Steel & Sumitomo Metal Corporation Cold-rolled steel sheet and method for producing same
WO2017131056A1 (en) * 2016-01-27 2017-08-03 Ｊｆｅスチール株式会社 High-yield ratio high-strength galvanized steel sheet, and method for producing same
WO2018030500A1 (en) * 2016-08-10 2018-02-15 Ｊｆｅスチール株式会社 High-strength thin steel sheet and method for manufacturing same
CN109642294A (en) * 2016-09-28 2019-04-16 杰富意钢铁株式会社 Steel plate and its manufacturing method
CN111647732A (en) * 2020-05-11 2020-09-11 首钢集团有限公司 A kind of 1300MPa grade multiphase steel, its preparation method and its application
CN113737087A (en) * 2020-05-27 2021-12-03 宝山钢铁股份有限公司 Ultrahigh-strength dual-phase steel and manufacturing method thereof

Non-Patent Citations (1)

* Cited by examiner, † Cited by third party
Title
See also references of WO2023246737A1 *

Also Published As

Publication number Publication date
CN117305683A (en) 2023-12-29
EP4545665A1 (en) 2025-04-30
CN117305683B (en) 2026-05-22
JP2025521343A (en) 2025-07-08
WO2023246737A1 (en) 2023-12-28

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