EP3556885A4 - High-strength wire rod having superior impact toughness and manufacturing method therefor - Google Patents

High-strength wire rod having superior impact toughness and manufacturing method therefor Download PDF

Info

Publication number
EP3556885A4
EP3556885A4 EP17881235.0A EP17881235A EP3556885A4 EP 3556885 A4 EP3556885 A4 EP 3556885A4 EP 17881235 A EP17881235 A EP 17881235A EP 3556885 A4 EP3556885 A4 EP 3556885A4
Authority
EP
European Patent Office
Prior art keywords
manufacturing
wire rod
method therefor
impact toughness
strength wire
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.)
Withdrawn
Application number
EP17881235.0A
Other languages
German (de)
French (fr)
Other versions
EP3556885A1 (en
Inventor
Hyong-Jik Lee
In-Gyu Park
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 EP3556885A1 publication Critical patent/EP3556885A1/en
Publication of EP3556885A4 publication Critical patent/EP3556885A4/en
Withdrawn legal-status Critical Current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
    • C21D9/52—Heat treatment, e.g. annealing, hardening, quenching or tempering, adapted for particular articles; Furnaces therefor for wires; for strips ; for rods of unlimited length
    • C21D9/525—Heat treatment, e.g. annealing, hardening, quenching or tempering, adapted for particular articles; Furnaces therefor for wires; for strips ; for rods of unlimited length for wire, for rods
    • 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
    • C21D1/28—Normalising
    • 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
    • C21D6/001—Heat treatment of ferrous alloys containing 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
    • C21D7/00—Modifying the physical properties of iron or steel by deformation
    • C21D7/13—Modifying the physical properties of iron or steel by deformation by hot working
    • 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
    • C21D8/06—Modifying the physical properties by deformation combined with, or followed by, heat treatment during manufacturing of rods or wires
    • 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
    • C21D8/06—Modifying the physical properties by deformation combined with, or followed by, heat treatment during manufacturing of rods or wires
    • C21D8/065—Modifying the physical properties by deformation combined with, or followed by, heat treatment during manufacturing of rods or wires 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
    • C21D9/00—Heat treatment, e.g. annealing, hardening, quenching or tempering, adapted for particular articles; Furnaces therefor
    • C21D9/52—Heat treatment, e.g. annealing, hardening, quenching or tempering, adapted for particular articles; Furnaces therefor for wires; for strips ; for rods of unlimited length
    • C21D9/54—Furnaces for treating strips or wire
    • C21D9/56—Continuous furnaces for strip or wire
    • C21D9/573—Continuous furnaces for strip or wire with cooling
    • C21D9/5732—Continuous furnaces for strip or wire with cooling of wires; of rods
    • 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
    • C21D9/52—Heat treatment, e.g. annealing, hardening, quenching or tempering, adapted for particular articles; Furnaces therefor for wires; for strips ; for rods of unlimited length
    • C21D9/54—Furnaces for treating strips or wire
    • C21D9/56—Continuous furnaces for strip or wire
    • C21D9/573—Continuous furnaces for strip or wire with cooling
    • C21D9/5735—Details
    • 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
    • C22C38/08—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
    • C22C38/14—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
    • C21D2211/005—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)
  • Materials Engineering (AREA)
  • Mechanical Engineering (AREA)
  • Metallurgy (AREA)
  • Organic Chemistry (AREA)
  • Crystallography & Structural Chemistry (AREA)
  • Physics & Mathematics (AREA)
  • Thermal Sciences (AREA)
  • Manufacturing & Machinery (AREA)
  • Heat Treatment Of Steel (AREA)
EP17881235.0A 2016-12-13 2017-11-23 High-strength wire rod having superior impact toughness and manufacturing method therefor Withdrawn EP3556885A4 (en)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
KR1020160169308A KR101879068B1 (en) 2016-12-13 2016-12-13 High strength wire rod having excellent impact toughness and method for manufacturing the same
PCT/KR2017/013391 WO2018110850A1 (en) 2016-12-13 2017-11-23 High-strength wire rod having superior impact toughness and manufacturing method therefor

Publications (2)

Publication Number Publication Date
EP3556885A1 EP3556885A1 (en) 2019-10-23
EP3556885A4 true EP3556885A4 (en) 2019-10-30

Family

ID=62558832

Family Applications (1)

Application Number Title Priority Date Filing Date
EP17881235.0A Withdrawn EP3556885A4 (en) 2016-12-13 2017-11-23 High-strength wire rod having superior impact toughness and manufacturing method therefor

Country Status (6)

Country Link
US (1) US20200071792A1 (en)
EP (1) EP3556885A4 (en)
JP (1) JP6806905B2 (en)
KR (1) KR101879068B1 (en)
CN (1) CN110062813B (en)
WO (1) WO2018110850A1 (en)

Families Citing this family (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
KR102218441B1 (en) * 2019-10-08 2021-02-19 주식회사 포스코 High strength wire rod having non-magnetic property and method for manufacturing thereof
KR102321317B1 (en) * 2019-10-16 2021-11-02 주식회사 포스코 Wire rod for welding rod nd method for manufacturing thereof

Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP2005054250A (en) * 2003-08-06 2005-03-03 Kobe Steel Ltd High tensile strength steel sheet having excellent base metal toughness and haz toughness
US20140290807A1 (en) * 2011-02-24 2014-10-02 Jfe Steel Corporation Low-yield-ratio high-strength hot-rolled steel plate with excellent low-temperature toughness and process for producing same
WO2016072679A1 (en) * 2014-11-03 2016-05-12 주식회사 포스코 Wire rod having enhanced strength and impact toughness and preparation method for same
KR20160053776A (en) * 2014-11-03 2016-05-13 주식회사 포스코 Steel wire rod having high strength and impact toughness, and method for manufacturing thereof

Family Cites Families (8)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS61124524A (en) * 1984-11-22 1986-06-12 Sumitomo Metal Ind Ltd Manufacture of bar steel for steel reinforced concrete
JPS62287012A (en) * 1986-06-03 1987-12-12 Kobe Steel Ltd Production of low-temperature reinforcing bar having excellent weldability
KR100891866B1 (en) * 2002-12-20 2009-04-08 주식회사 포스코 Method of manufacturing high Si added medium carbon wire rod
JP5176271B2 (en) * 2005-03-22 2013-04-03 新日鐵住金株式会社 Method for producing high-strength steel sheet for line pipe with tensile strength of 760 MPa or higher with suppressed increase in yield strength after heating by coating treatment, and method for producing high-strength steel pipe for line pipe using the same
JP5034290B2 (en) * 2006-03-28 2012-09-26 Ｊｆｅスチール株式会社 Low yield ratio high strength thick steel plate and method for producing the same
KR101542676B1 (en) * 2011-04-13 2015-08-06 신닛테츠스미킨 카부시키카이샤 High-strength cold-rolled steel sheet with excellent local formability, and manufacturing method therefor
EP2735622B1 (en) * 2011-07-20 2019-09-04 JFE Steel Corporation Low-yield-ratio high-strength hot-rolled steel plate with excellent low-temperature toughness and process for producing same
CN103060678B (en) * 2012-12-25 2016-04-27 钢铁研究总院 A kind of warm-working nanometer austenite strengthens plasticising steel and preparation method thereof

Patent Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP2005054250A (en) * 2003-08-06 2005-03-03 Kobe Steel Ltd High tensile strength steel sheet having excellent base metal toughness and haz toughness
US20140290807A1 (en) * 2011-02-24 2014-10-02 Jfe Steel Corporation Low-yield-ratio high-strength hot-rolled steel plate with excellent low-temperature toughness and process for producing same
WO2016072679A1 (en) * 2014-11-03 2016-05-12 주식회사 포스코 Wire rod having enhanced strength and impact toughness and preparation method for same
KR20160053776A (en) * 2014-11-03 2016-05-13 주식회사 포스코 Steel wire rod having high strength and impact toughness, and method for manufacturing thereof

Non-Patent Citations (1)

* Cited by examiner, † Cited by third party
Title
See also references of WO2018110850A1 *

Also Published As

Publication number Publication date
WO2018110850A1 (en) 2018-06-21
JP2020509169A (en) 2020-03-26
CN110062813A (en) 2019-07-26
KR20180067894A (en) 2018-06-21
JP6806905B2 (en) 2021-01-06
EP3556885A1 (en) 2019-10-23
CN110062813B (en) 2021-05-04
US20200071792A1 (en) 2020-03-05
KR101879068B1 (en) 2018-07-16

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