EP3878996A4 - High strength steel plate for structure with good seawater corrosion resistant property and method of manufacturing same - Google Patents

High strength steel plate for structure with good seawater corrosion resistant property and method of manufacturing same Download PDF

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Publication number
EP3878996A4
EP3878996A4 EP19883204.0A EP19883204A EP3878996A4 EP 3878996 A4 EP3878996 A4 EP 3878996A4 EP 19883204 A EP19883204 A EP 19883204A EP 3878996 A4 EP3878996 A4 EP 3878996A4
Authority
EP
European Patent Office
Prior art keywords
steel plate
high strength
corrosion resistant
strength steel
manufacturing same
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
EP19883204.0A
Other languages
German (de)
French (fr)
Other versions
EP3878996A1 (en
Inventor
Jin-Ho Park
Ju-Yeon YI
Seng-Ho YU
Bong-Ju Kim
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 EP3878996A1 publication Critical patent/EP3878996A1/en
Publication of EP3878996A4 publication Critical patent/EP3878996A4/en
Pending 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
    • C21D1/02—Hardening articles or materials formed by forging or rolling, with no further heating beyond that required for the formation
    • 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
    • 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 by deformation combined with, or followed by, heat treatment
    • C21D8/02—Modifying the physical properties 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 by deformation combined with, or followed by, heat treatment
    • C21D8/02—Modifying the physical properties by deformation combined with, or followed by, heat treatment during manufacturing of plates or strips
    • C21D8/0205—Modifying the physical properties by deformation combined with, or followed by, heat treatment during manufacturing of plates or strips of ferrous alloys
    • 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 by deformation combined with, or followed by, heat treatment
    • C21D8/02—Modifying the physical properties by deformation combined with, or followed by, heat treatment during manufacturing of plates or strips
    • C21D8/0221—Modifying the physical properties 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 by deformation combined with, or followed by, heat treatment
    • C21D8/02—Modifying the physical properties by deformation combined with, or followed by, heat treatment during manufacturing of plates or strips
    • C21D8/0247—Modifying the physical properties 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 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
    • 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
    • C22C38/48—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
    • 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
    • C21D2211/009—Pearlite

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)
EP19883204.0A 2018-11-08 2019-11-08 High strength steel plate for structure with good seawater corrosion resistant property and method of manufacturing same Pending EP3878996A4 (en)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
KR1020180136846A KR102142774B1 (en) 2018-11-08 2018-11-08 High strength steel plate for structure with a good seawater corrosion resistive property and method of manufacturing thereof
PCT/KR2019/015124 WO2020096398A1 (en) 2018-11-08 2019-11-08 High strength steel plate for structure with good seawater corrosion resistant property and method of manufacturing same

Publications (2)

Publication Number Publication Date
EP3878996A1 EP3878996A1 (en) 2021-09-15
EP3878996A4 true EP3878996A4 (en) 2022-01-05

Family

ID=70612140

Family Applications (1)

Application Number Title Priority Date Filing Date
EP19883204.0A Pending EP3878996A4 (en) 2018-11-08 2019-11-08 High strength steel plate for structure with good seawater corrosion resistant property and method of manufacturing same

Country Status (6)

Country Link
US (1) US20210388458A1 (en)
EP (1) EP3878996A4 (en)
JP (1) JP7332692B2 (en)
KR (1) KR102142774B1 (en)
CN (1) CN112969809B (en)
WO (1) WO2020096398A1 (en)

Citations (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
KR20150112517A (en) * 2014-03-28 2015-10-07 현대제철 주식회사 Steel sheet for line pipe and method of manufacturing the same
CN105441799A (en) * 2015-11-25 2016-03-30 武汉钢铁(集团)公司 High-toughness and low-yield-ratio quenched and tempered steel plate used in low-temperature environment and manufacturing method of high-toughness and low-yield-ratio quenched and tempered steel plate
US20170002435A1 (en) * 2013-12-24 2017-01-05 Posco Ultrahigh-strength steel for welding structure with excellent toughness in welding heat-affected zones thereof, and method for manufacturing same
CN106480374A (en) * 2015-08-31 2017-03-08 鞍钢股份有限公司 A kind of cold-resistant pipeline high tenacity low yield strength ratio hot-rolled thick plank and its production method
KR20180071684A (en) * 2016-12-20 2018-06-28 주식회사 포스코 Steel plate for welded steel pipe having excellent elogation of the longitudinal direction and toughness at low-temperature, method for manufacturing thereof and welded steel pipe using same
CN108467993A (en) * 2018-06-11 2018-08-31 鞍钢股份有限公司 A kind of cryogenic pipelines ultra-wide high tenacity hot-rolled thick plank and its production method

Family Cites Families (19)

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Publication number Priority date Publication date Assignee Title
JPH06316723A (en) * 1993-03-12 1994-11-15 Kobe Steel Ltd Production of weather resistant refractory steel material for building construction, excellent in gas cutting property and weldability
JPH07216500A (en) * 1994-01-28 1995-08-15 Sumitomo Metal Ind Ltd High strength steel material excellent in corrosion resistance and its production
KR100371960B1 (en) * 2000-09-29 2003-02-14 주식회사 포스코 High atmosphere corrosion resting and workability hot rolled strip having tensile strength of 60 kg/㎟ and method for manufacturing it
KR20040054272A (en) 2002-12-18 2004-06-25 주식회사 포스코 Method of manufacturing piping steel of a ship with a good seawater resistive property
CN101906567B (en) * 2005-03-28 2014-07-02 株式会社神户制钢所 High strength hot rolled steel sheet excellent in bore expanding workability and method for production thereof
KR100815709B1 (en) * 2006-12-12 2008-03-20 주식회사 포스코 Formable high strength cold-rolled steel sheet with excellent weather resistance and method manufacturing the same
WO2009072753A1 (en) * 2007-12-04 2009-06-11 Posco High-strength steel sheet with excellent low temperature toughness and manufacturing method thereof
KR100951296B1 (en) * 2007-12-04 2010-04-02 주식회사 포스코 Steel plate for linepipe having high strength and excellent low temperature toughness and manufacturing method of the same
KR101018159B1 (en) * 2008-05-15 2011-02-28 주식회사 포스코 High-strength steel sheet with excellent low temperature toughness and manufacturing method thereof
KR101125886B1 (en) * 2008-11-29 2012-03-21 주식회사 포스코 High strength ship-building steel with excellent general corrosion and pitting corrosion resistance at low ph chloride solution and excellent haz toughness and manufacturing method for the same
KR101131699B1 (en) * 2009-10-28 2012-03-28 신닛뽄세이테쯔 카부시키카이샤 Steel plate for line pipe excellent in strength and ductility and method of production of same
KR101289124B1 (en) 2009-12-10 2013-07-23 주식회사 포스코 Ship-building steel with excellent corrosion resistance at sea water
KR101289154B1 (en) 2009-12-29 2013-07-23 주식회사 포스코 Hot rolled steel sheet having excellent corrosion resistance and impcat toughness and manufacturing method thereof
JP5573265B2 (en) * 2010-03-19 2014-08-20 Ｊｆｅスチール株式会社 High strength thick steel plate excellent in ductility with a tensile strength of 590 MPa or more and method for producing the same
KR101758003B1 (en) * 2013-04-15 2017-07-13 신닛테츠스미킨 카부시키카이샤 Hot-rolled steel sheet
JP6766642B2 (en) * 2016-02-25 2020-10-14 日本製鉄株式会社 Steel sheet with excellent brittle crack propagation stop characteristics and its manufacturing method
JP6911575B2 (en) * 2016-06-30 2021-07-28 日本製鉄株式会社 Steel sheet with excellent brittle crack propagation stop characteristics and its manufacturing method
KR101899689B1 (en) * 2016-12-23 2018-09-17 주식회사 포스코 Steel plate for welded steel pipe having excellent elogation of the longitudinal direction, method for manufacturing thereof and welded steel pipe using same
CN108728733A (en) * 2017-04-24 2018-11-02 鞍钢股份有限公司 Convey natural gas from coal X70 Pipeline Steel Plates and its manufacturing method

Patent Citations (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US20170002435A1 (en) * 2013-12-24 2017-01-05 Posco Ultrahigh-strength steel for welding structure with excellent toughness in welding heat-affected zones thereof, and method for manufacturing same
KR20150112517A (en) * 2014-03-28 2015-10-07 현대제철 주식회사 Steel sheet for line pipe and method of manufacturing the same
CN106480374A (en) * 2015-08-31 2017-03-08 鞍钢股份有限公司 A kind of cold-resistant pipeline high tenacity low yield strength ratio hot-rolled thick plank and its production method
CN105441799A (en) * 2015-11-25 2016-03-30 武汉钢铁(集团)公司 High-toughness and low-yield-ratio quenched and tempered steel plate used in low-temperature environment and manufacturing method of high-toughness and low-yield-ratio quenched and tempered steel plate
KR20180071684A (en) * 2016-12-20 2018-06-28 주식회사 포스코 Steel plate for welded steel pipe having excellent elogation of the longitudinal direction and toughness at low-temperature, method for manufacturing thereof and welded steel pipe using same
CN108467993A (en) * 2018-06-11 2018-08-31 鞍钢股份有限公司 A kind of cryogenic pipelines ultra-wide high tenacity hot-rolled thick plank and its production method

Also Published As

Publication number Publication date
US20210388458A1 (en) 2021-12-16
KR102142774B1 (en) 2020-08-07
KR20200053342A (en) 2020-05-18
EP3878996A1 (en) 2021-09-15
JP7332692B2 (en) 2023-08-23
CN112969809B (en) 2023-12-15
CN112969809A (en) 2021-06-15
WO2020096398A1 (en) 2020-05-14
JP2022506661A (en) 2022-01-17

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