EP3730655A4 - HIGH STRENGTH STEEL PLATE AND MANUFACTURING PROCESS FOR IT - Google Patents

HIGH STRENGTH STEEL PLATE AND MANUFACTURING PROCESS FOR IT Download PDF

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Publication number
EP3730655A4
EP3730655A4 EP18891912.0A EP18891912A EP3730655A4 EP 3730655 A4 EP3730655 A4 EP 3730655A4 EP 18891912 A EP18891912 A EP 18891912A EP 3730655 A4 EP3730655 A4 EP 3730655A4
Authority
EP
European Patent Office
Prior art keywords
manufacturing process
steel plate
high strength
strength steel
manufacturing
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.)
Granted
Application number
EP18891912.0A
Other languages
German (de)
French (fr)
Other versions
EP3730655A1 (en
EP3730655B1 (en
Inventor
Soon-Taik Hong
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
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Publication of EP3730655A1 publication Critical patent/EP3730655A1/en
Publication of EP3730655A4 publication Critical patent/EP3730655A4/en
Application granted granted Critical
Publication of EP3730655B1 publication Critical patent/EP3730655B1/en
Active legal-status Critical Current
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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
    • C22C38/42—Ferrous alloys, e.g. steel alloys containing chromium with nickel with copper
    • 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
    • C21D6/004—Heat treatment of ferrous alloys containing Cr and Ni
    • 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
    • C21D6/00—Heat treatment of ferrous alloys
    • C21D6/008—Heat treatment of ferrous alloys containing Si
    • 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
    • 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
    • C22C38/001—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
    • C22C38/02—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
    • C22C38/44—Ferrous alloys, e.g. steel alloys containing chromium with nickel 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
    • C22C38/40—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
    • C22C38/48—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
    • 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
    • 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

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  • 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)
EP18891912.0A 2017-12-24 2018-11-28 High strength steel plate and manufacturing method therefor Active EP3730655B1 (en)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
KR1020170178924A KR102031450B1 (en) 2017-12-24 2017-12-24 High strength steel sheet and manufacturing method for the same
PCT/KR2018/014855 WO2019124793A1 (en) 2017-12-24 2018-11-28 High strength steel sheet and manufacturing method therefor

Publications (3)

Publication Number Publication Date
EP3730655A1 EP3730655A1 (en) 2020-10-28
EP3730655A4 true EP3730655A4 (en) 2020-10-28
EP3730655B1 EP3730655B1 (en) 2022-05-18

Family

ID=66993726

Family Applications (1)

Application Number Title Priority Date Filing Date
EP18891912.0A Active EP3730655B1 (en) 2017-12-24 2018-11-28 High strength steel plate and manufacturing method therefor

Country Status (6)

Country Link
US (2) US20200347478A1 (en)
EP (1) EP3730655B1 (en)
JP (1) JP7096337B2 (en)
KR (1) KR102031450B1 (en)
CN (1) CN111566249B (en)
WO (1) WO2019124793A1 (en)

Families Citing this family (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
KR102440756B1 (en) * 2020-12-15 2022-09-08 주식회사 포스코 Steel with low surface hardness and excellent low-temperature impact toughness and manufacturing method therefor
CN115478134B (en) * 2022-09-27 2024-09-10 首钢集团有限公司 A method for directly quenching steel plate after rolling
CN115558863B (en) * 2022-10-19 2023-04-07 鞍钢集团北京研究院有限公司 Marine steel with yield strength of more than or equal to 750MPa and low yield ratio and production process thereof
CN116287606A (en) * 2023-02-24 2023-06-23 首钢集团有限公司 A method of improving the strength of high-strength steel quenched online
CN117721281A (en) * 2023-11-21 2024-03-19 包头钢铁（集团）有限责任公司 Method for improving low-temperature impact toughness of online quenched high-strength steel

Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
KR100833069B1 (en) * 2006-12-13 2008-05-27 주식회사 포스코 Steel plate for tensile strength 500 MPa pressure vessel with excellent HIC resistance and HA toughness and its manufacturing method
WO2010074473A2 (en) * 2008-12-26 2010-07-01 Posco High strength steel plate for nuclear reactor containment vessel and method of manufacturing the same
JP2014218707A (en) * 2013-05-09 2014-11-20 Ｊｆｅスチール株式会社 Heat treated steel sheet excellent in hydrogen-induced cracking resistance and method of producing the same
JP2015124435A (en) * 2013-12-27 2015-07-06 Ｊｆｅスチール株式会社 Thick steel plate for reactor storage container excellent in brittle crack propagation stopping property

Family Cites Families (12)

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JP4475023B2 (en) * 2004-06-10 2010-06-09 住友金属工業株式会社 Ultra high strength bend pipe with excellent low temperature toughness
CN101962741B (en) * 2009-07-24 2012-08-08 宝山钢铁股份有限公司 Quenched and tempered steel sheet and manufacturing method thereof
KR101271990B1 (en) * 2009-12-01 2013-06-05 주식회사 포스코 High strength steel sheet and method for manufacturing the same
CN103320701B (en) * 2012-03-23 2016-08-03 宝山钢铁股份有限公司 A kind of ferrite-bainite AHSS plate and manufacture method thereof
EP2871254B1 (en) * 2012-09-13 2020-06-24 JFE Steel Corporation Hot-rolled steel sheet and method for manufacturing same
JP5679091B1 (en) * 2013-04-04 2015-03-04 Ｊｆｅスチール株式会社 Hot-rolled steel sheet and manufacturing method thereof
EP2998414B1 (en) * 2013-05-14 2019-04-24 Nippon Steel & Sumitomo Metal Corporation Hot-rolled steel sheet and manufacturing method thereof
JP6024928B2 (en) * 2013-12-27 2016-11-16 Ｊｆｅスチール株式会社 Steel plates for marine, marine structures and hydraulic iron pipes with excellent brittle crack propagation stopping properties and methods for producing the same
KR20150101735A (en) * 2014-02-27 2015-09-04 현대제철 주식회사 Steel sheet and method of manufacturing the same
KR101657823B1 (en) * 2014-12-24 2016-09-20 주식회사 포스코 Steel having excellent low temperature toughness and hydrogen induced cracking resistance and manufacturing method thereof
EP3276026B1 (en) * 2015-03-26 2019-08-28 JFE Steel Corporation Thick steel sheet for structural pipe, method for manufacturing thick steel sheet for structural pipe, and structural pipe
JP6369658B1 (en) * 2017-09-19 2018-08-08 新日鐵住金株式会社 Steel pipe and steel plate

Patent Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
KR100833069B1 (en) * 2006-12-13 2008-05-27 주식회사 포스코 Steel plate for tensile strength 500 MPa pressure vessel with excellent HIC resistance and HA toughness and its manufacturing method
WO2010074473A2 (en) * 2008-12-26 2010-07-01 Posco High strength steel plate for nuclear reactor containment vessel and method of manufacturing the same
JP2014218707A (en) * 2013-05-09 2014-11-20 Ｊｆｅスチール株式会社 Heat treated steel sheet excellent in hydrogen-induced cracking resistance and method of producing the same
JP2015124435A (en) * 2013-12-27 2015-07-06 Ｊｆｅスチール株式会社 Thick steel plate for reactor storage container excellent in brittle crack propagation stopping property

Non-Patent Citations (1)

* Cited by examiner, † Cited by third party
Title
See also references of WO2019124793A1 *

Also Published As

Publication number Publication date
CN111566249A (en) 2020-08-21
CN111566249B (en) 2022-05-13
WO2019124793A1 (en) 2019-06-27
US20200347478A1 (en) 2020-11-05
EP3730655A1 (en) 2020-10-28
JP7096337B2 (en) 2022-07-05
JP2021508774A (en) 2021-03-11
US20260055479A1 (en) 2026-02-26
KR102031450B1 (en) 2019-10-11
EP3730655B1 (en) 2022-05-18
KR20190077177A (en) 2019-07-03

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