EP3730640A4 - THICK STEEL PLATE WITH EXCELLENT LOW-TEMPERATURE TOUGHNESS AND METHOD FOR MANUFACTURING IT - Google Patents

THICK STEEL PLATE WITH EXCELLENT LOW-TEMPERATURE TOUGHNESS AND METHOD FOR MANUFACTURING IT Download PDF

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Publication number
EP3730640A4
EP3730640A4 EP18890536.8A EP18890536A EP3730640A4 EP 3730640 A4 EP3730640 A4 EP 3730640A4 EP 18890536 A EP18890536 A EP 18890536A EP 3730640 A4 EP3730640 A4 EP 3730640A4
Authority
EP
European Patent Office
Prior art keywords
manufacturing
steel plate
thick steel
excellent low
temperature toughness
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
EP18890536.8A
Other languages
German (de)
French (fr)
Other versions
EP3730640A1 (en
Inventor
Woo-Gyeom KIM
Kyung-Keun Um
Ki-Hyun Bang
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 EP3730640A1 publication Critical patent/EP3730640A1/en
Publication of EP3730640A4 publication Critical patent/EP3730640A4/en
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
    • C22C38/04—Ferrous alloys, e.g. steel alloys containing 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
    • 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
    • C22C38/02—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
    • C22C38/06—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
    • 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
    • C21D2211/003—Cementite
    • 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

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)
EP18890536.8A 2017-12-24 2018-12-14 THICK STEEL PLATE WITH EXCELLENT LOW-TEMPERATURE TOUGHNESS AND METHOD FOR MANUFACTURING IT Pending EP3730640A4 (en)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
KR1020170178949A KR101999018B1 (en) 2017-12-24 2017-12-24 Thick steel plate with excellent low-temperature toughness and method for manufacturing the same
PCT/KR2018/015950 WO2019124890A1 (en) 2017-12-24 2018-12-14 Thick steel plate having excellent low-temperature toughness and manufacturing method therefor

Publications (2)

Publication Number Publication Date
EP3730640A1 EP3730640A1 (en) 2020-10-28
EP3730640A4 true EP3730640A4 (en) 2020-10-28

Family

ID=66994972

Family Applications (1)

Application Number Title Priority Date Filing Date
EP18890536.8A Pending EP3730640A4 (en) 2017-12-24 2018-12-14 THICK STEEL PLATE WITH EXCELLENT LOW-TEMPERATURE TOUGHNESS AND METHOD FOR MANUFACTURING IT

Country Status (5)

Country Link
EP (1) EP3730640A4 (en)
JP (1) JP7064597B2 (en)
KR (1) KR101999018B1 (en)
CN (1) CN111511950A (en)
WO (1) WO2019124890A1 (en)

Families Citing this family (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
KR102218423B1 (en) * 2019-08-23 2021-02-19 주식회사 포스코 Thin steel plate having excellent low-temperature toughness and ctod properties, and method for manufacturing thereof
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
KR102397583B1 (en) * 2020-09-25 2022-05-13 주식회사 포스코 High Strength Hot Rolled Steel Sheet with Excellent Elongation and Method of Manufacturing Thereof
CN113201691B (en) * 2021-04-28 2022-03-22 攀钢集团攀枝花钢铁研究院有限公司 Hot rolled steel plate for 590 MPa-level hydraulic bulging and preparation method thereof
CN114686776B (en) * 2022-03-31 2022-10-18 鞍钢股份有限公司 A 460MPa grade high toughness extra-thick plate and its manufacturing method
CN116162855B (en) * 2023-02-28 2024-01-30 马鞍山钢铁股份有限公司 A 600MPa thick specification phosphorus-containing hot-rolled weather-resistant steel plate and its manufacturing method

Citations (6)

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Publication number Priority date Publication date Assignee Title
KR100957970B1 (en) * 2007-12-27 2010-05-17 주식회사 포스코 High strength high toughness steel plate and manufacturing method thereof
US20130206289A1 (en) * 2010-08-10 2013-08-15 Jfe Steel Corporation High-strength hot-rolled steel sheet having excellent formability and method for manufacturing the same
KR20160078624A (en) * 2014-12-24 2016-07-05 주식회사 포스코 Hot rolled steel sheet for steel pipe having excellent low-temperature toughness and strength and method for manufacturing the same
KR20160147153A (en) * 2015-06-12 2016-12-22 동국제강주식회사 Manufacturing method of high strength steel plate for line pipe and high strength steel plate for line pipe
WO2017111443A1 (en) * 2015-12-23 2017-06-29 주식회사 포스코 High-strength structural steel sheet excellent in hot resistance and manufacturing method thereof
WO2017111526A1 (en) * 2015-12-23 2017-06-29 주식회사 포스코 Low-yield ratio and high-strength steel having excellent stress corrosion cracking resistance and low temperature toughness

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JPH0649898B2 (en) * 1986-01-24 1994-06-29 株式会社神戸製鋼所 Method for producing low yielding high yield point steel with excellent toughness in the heat affected zone
JPS62256916A (en) * 1986-04-28 1987-11-09 Kobe Steel Ltd Production of low-temperature extra-thick steel plate having excellent uniformity in thickness direction
KR100660230B1 (en) * 2005-12-26 2006-12-21 주식회사 포스코 Extreme thick steel sheet for welded structure with excellent strength and toughness at the center of thickness and manufacturing method
JP4976749B2 (en) 2006-06-02 2012-07-18 株式会社神戸製鋼所 Steel sheet with excellent fatigue crack growth resistance
CN101705439B (en) * 2009-12-18 2011-12-21 江苏省沙钢钢铁研究院有限公司 Low-temperature high-toughness F460 grade ultra-high-strength shipbuilding steel plate and manufacturing method thereof
KR101185336B1 (en) * 2010-07-28 2012-09-21 현대제철 주식회사 STEEL PLATE WITH HIGH STRENGTH OF 500MPa GRADE AND LOW TEMPERATURE TOUGHNESS AND METHOD FOR MANUFACTURING THE SAME
JP5612532B2 (en) 2011-04-26 2014-10-22 株式会社神戸製鋼所 Steel sheet excellent in low temperature toughness and weld joint fracture toughness and method for producing the same
KR101403224B1 (en) * 2011-12-28 2014-06-02 주식회사 포스코 Thick steel plate having excellent low yield ratio property and low temperature toughness and method for manufacturing the steel plate
JP5833964B2 (en) 2012-03-29 2015-12-16 株式会社神戸製鋼所 Steel sheet excellent in bending workability, impact property and tensile property, and method for producing the same
ES2746285T5 (en) * 2012-03-30 2022-12-19 Voestalpine Stahl Gmbh Cold rolled high strength steel sheet and process for producing said steel sheet
JP5811032B2 (en) 2012-05-23 2015-11-11 新日鐵住金株式会社 Steel sheet for LPG tank
KR20150002956A (en) * 2013-06-27 2015-01-08 현대제철 주식회사 Steel sheet for line pipe and method of manufacturing the same
KR101647226B1 (en) * 2014-12-24 2016-08-10 주식회사 포스코 Steel plate having excellent fracture resistance and yield ratio, and method for manufacturing the same
JP6763141B2 (en) 2015-02-10 2020-09-30 日本製鉄株式会社 Manufacturing method of steel plate for LPG tank
KR20160150190A (en) * 2015-06-18 2016-12-29 현대제철 주식회사 Manufacturing mehtod for thick steel plate and thick steel plate thereof
KR101786258B1 (en) 2015-12-23 2017-10-18 주식회사 포스코 The steel sheet having high-strength and excellent heat affected zone toughness and method for manufacturing the same
CN107502821B (en) * 2017-08-29 2019-06-25 江阴兴澄特种钢铁有限公司 The economical X 70 pipeline steel plate and its manufacturing method used under a kind of spy's think gauge ultra-low temperature surroundings

Patent Citations (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
KR100957970B1 (en) * 2007-12-27 2010-05-17 주식회사 포스코 High strength high toughness steel plate and manufacturing method thereof
US20130206289A1 (en) * 2010-08-10 2013-08-15 Jfe Steel Corporation High-strength hot-rolled steel sheet having excellent formability and method for manufacturing the same
KR20160078624A (en) * 2014-12-24 2016-07-05 주식회사 포스코 Hot rolled steel sheet for steel pipe having excellent low-temperature toughness and strength and method for manufacturing the same
KR20160147153A (en) * 2015-06-12 2016-12-22 동국제강주식회사 Manufacturing method of high strength steel plate for line pipe and high strength steel plate for line pipe
WO2017111443A1 (en) * 2015-12-23 2017-06-29 주식회사 포스코 High-strength structural steel sheet excellent in hot resistance and manufacturing method thereof
WO2017111526A1 (en) * 2015-12-23 2017-06-29 주식회사 포스코 Low-yield ratio and high-strength steel having excellent stress corrosion cracking resistance and low temperature toughness

Non-Patent Citations (1)

* Cited by examiner, † Cited by third party
Title
See also references of WO2019124890A1 *

Also Published As

Publication number Publication date
EP3730640A1 (en) 2020-10-28
JP2021507118A (en) 2021-02-22
KR20190077196A (en) 2019-07-03
KR101999018B1 (en) 2019-07-10
CN111511950A (en) 2020-08-07
JP7064597B2 (en) 2022-05-10
WO2019124890A1 (en) 2019-06-27

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Owner name: POSCO HOLDINGS INC.

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Owner name: POSCO CO., LTD