EP4063531A4 - Wire rod for ultra-high strength spring, steel wire and manufacturing method thereof - Google Patents

Wire rod for ultra-high strength spring, steel wire and manufacturing method thereof Download PDF

Info

Publication number
EP4063531A4
EP4063531A4 EP20903249.9A EP20903249A EP4063531A4 EP 4063531 A4 EP4063531 A4 EP 4063531A4 EP 20903249 A EP20903249 A EP 20903249A EP 4063531 A4 EP4063531 A4 EP 4063531A4
Authority
EP
European Patent Office
Prior art keywords
ultra
manufacturing
high strength
strength spring
steel 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.)
Pending
Application number
EP20903249.9A
Other languages
German (de)
French (fr)
Other versions
EP4063531A1 (en
Inventor
Jun Mo Lee
Seok-Hwan Choi
Han Hwi Kim
Myung Soo Choi
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 EP4063531A1 publication Critical patent/EP4063531A1/en
Publication of EP4063531A4 publication Critical patent/EP4063531A4/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
    • 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
    • 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
    • C22C38/26—Ferrous alloys, e.g. steel alloys containing chromium with niobium or tantalum
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B21—MECHANICAL METAL-WORKING WITHOUT ESSENTIALLY REMOVING MATERIAL; PUNCHING METAL
    • B21B—ROLLING OF METAL
    • B21B1/00—Metal-rolling methods or mills for making semi-finished products of solid or profiled cross-section; Sequence of operations in milling trains; Layout of rolling-mill plant, e.g. grouping of stands; Succession of passes or of sectional pass alternations
    • B21B1/16—Metal-rolling methods or mills for making semi-finished products of solid or profiled cross-section; Sequence of operations in milling trains; Layout of rolling-mill plant, e.g. grouping of stands; Succession of passes or of sectional pass alternations for rolling wire rods, bars, merchant bars, rounds wire or material of like small cross-section
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B21—MECHANICAL METAL-WORKING WITHOUT ESSENTIALLY REMOVING MATERIAL; PUNCHING METAL
    • B21B—ROLLING OF METAL
    • B21B3/00—Rolling materials of special alloys so far as the composition of the alloy requires or permits special rolling methods or sequences ; Rolling of aluminium, copper, zinc or other non-ferrous 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
    • 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
    • C21D1/22—Martempering
    • 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
    • C21D1/25—Hardening, combined with annealing between 300 degrees Celsius and 600 degrees Celsius, i.e. heat refining ("Vergüten")
    • 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
    • C21D1/34—Methods of heating
    • C21D1/42—Induction heating
    • 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
    • C21D1/56—General methods or devices for heat treatment, e.g. annealing, hardening, quenching or tempering characterised by the quenching agents
    • C21D1/60—Aqueous agents
    • 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
    • C21D6/002—Heat treatment of ferrous alloys containing Cr
    • 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
    • C21D9/00—Heat treatment, e.g. annealing, hardening, quenching or tempering, adapted for particular articles; Furnaces therefor
    • C21D9/02—Heat treatment, e.g. annealing, hardening, quenching or tempering, adapted for particular articles; Furnaces therefor for springs
    • 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
    • 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
    • C22C38/04—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
    • 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)
  • Manufacturing & Machinery (AREA)
  • Heat Treatment Of Steel (AREA)
  • Heat Treatment Of Strip Materials And Filament Materials (AREA)
EP20903249.9A 2019-12-20 2020-06-22 Wire rod for ultra-high strength spring, steel wire and manufacturing method thereof Pending EP4063531A4 (en)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
KR1020190172003A KR102326263B1 (en) 2019-12-20 2019-12-20 Steel wire rod, steel wire for ultra high strength spring and manufacturing mehtod thereof
PCT/KR2020/008091 WO2021125471A1 (en) 2019-12-20 2020-06-22 Wire rod for ultra-high strength spring, steel wire and manufacturing method thereof

Publications (2)

Publication Number Publication Date
EP4063531A1 EP4063531A1 (en) 2022-09-28
EP4063531A4 true EP4063531A4 (en) 2023-12-06

Family

ID=76477565

Family Applications (1)

Application Number Title Priority Date Filing Date
EP20903249.9A Pending EP4063531A4 (en) 2019-12-20 2020-06-22 Wire rod for ultra-high strength spring, steel wire and manufacturing method thereof

Country Status (5)

Country Link
EP (1) EP4063531A4 (en)
JP (2) JP2023508314A (en)
KR (1) KR102326263B1 (en)
CN (1) CN114929923B (en)
WO (1) WO2021125471A1 (en)

Families Citing this family (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN113943895B (en) * 2021-10-15 2022-04-22 本钢板材股份有限公司 High-quality steel for spring steel wire and production process thereof

Citations (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US6264759B1 (en) * 1998-10-16 2001-07-24 Pohang Iron & Steel Co., Ltd. Wire rods with superior drawability and manufacturing method therefor
KR20030053771A (en) * 2001-12-24 2003-07-02 주식회사 포스코 A method for manufacturing spring steel without ferrite decarburization
KR20040035136A (en) * 2002-10-18 2004-04-29 주식회사 포스코 Method for Manufacturing Wire Rod of Spring Steel
WO2015052035A1 (en) * 2013-10-11 2015-04-16 Nv Bekaert Sa High tensile strength steel wire
CN107299291A (en) * 2017-06-30 2017-10-27 武汉钢铁有限公司 A kind of spring steel and its skin decarburization control technique
US20170362679A1 (en) * 2015-01-30 2017-12-21 Nv Bekaert Sa High tensile steel wire
CN108179355A (en) * 2018-01-31 2018-06-19 中钢集团郑州金属制品研究院有限公司 A kind of high-intensity and high-tenacity spring steel wire and its preparation process

Family Cites Families (15)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPH03130347A (en) * 1989-10-13 1991-06-04 Sumitomo Metal Ind Ltd High stress spring steel
JP3387149B2 (en) * 1993-05-13 2003-03-17 住友金属工業株式会社 Wire for reinforced high-strength steel wire and method of manufacturing the same
JPH10196697A (en) * 1997-01-10 1998-07-31 Kobe Steel Ltd High strength spring with excellent environmental brittleness resistance
KR100311795B1 (en) 1997-12-19 2001-11-22 이구택 Steel for spring and manufacturing method thereof
JP2004011002A (en) * 2002-06-10 2004-01-15 Sumitomo Metal Ind Ltd Element wire for drawing and wire
CN102268604A (en) * 2007-07-20 2011-12-07 株式会社神户制钢所 Steel wire material for spring and its producing method
JP5595358B2 (en) * 2010-08-30 2014-09-24 株式会社神戸製鋼所 Steel wire rod for high strength spring excellent in wire drawing property, method for producing the same, and high strength spring
BR112014003415B1 (en) * 2011-08-18 2019-05-28 Nippon Steel & Sumitomo Metal Corporation STEEL FOR SPRING AND SPRING
KR20150089846A (en) * 2014-01-28 2015-08-05 현대제철 주식회사 Spring and method of manufacturing the same
CN103805861B (en) * 2014-02-11 2016-06-01 江苏省沙钢钢铁研究院有限公司 A kind of carbon steel wire rod with high and its preparation method
JP6728817B2 (en) * 2016-03-17 2020-07-22 日本製鉄株式会社 High strength spring steel and spring
KR101940873B1 (en) * 2016-12-22 2019-01-21 주식회사 포스코 Steel wire rod and steel wire having high toughness and method for manufacturing thereof
US11118251B2 (en) * 2017-06-15 2021-09-14 Nippon Steel Corporation Rolled wire rod for spring steel
JP6816738B2 (en) 2018-03-30 2021-01-20 Ｊｆｅスチール株式会社 Steel wire manufacturing method
CN109161803B (en) * 2018-09-29 2020-08-25 武汉钢铁有限公司 1550 MPa-grade spring flat steel and production method thereof

Patent Citations (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US6264759B1 (en) * 1998-10-16 2001-07-24 Pohang Iron & Steel Co., Ltd. Wire rods with superior drawability and manufacturing method therefor
KR20030053771A (en) * 2001-12-24 2003-07-02 주식회사 포스코 A method for manufacturing spring steel without ferrite decarburization
KR20040035136A (en) * 2002-10-18 2004-04-29 주식회사 포스코 Method for Manufacturing Wire Rod of Spring Steel
WO2015052035A1 (en) * 2013-10-11 2015-04-16 Nv Bekaert Sa High tensile strength steel wire
US20170362679A1 (en) * 2015-01-30 2017-12-21 Nv Bekaert Sa High tensile steel wire
CN107299291A (en) * 2017-06-30 2017-10-27 武汉钢铁有限公司 A kind of spring steel and its skin decarburization control technique
CN108179355A (en) * 2018-01-31 2018-06-19 中钢集团郑州金属制品研究院有限公司 A kind of high-intensity and high-tenacity spring steel wire and its preparation process

Non-Patent Citations (1)

* Cited by examiner, † Cited by third party
Title
See also references of WO2021125471A1 *

Also Published As

Publication number Publication date
EP4063531A1 (en) 2022-09-28
WO2021125471A1 (en) 2021-06-24
KR102326263B1 (en) 2021-11-15
JP2024060017A (en) 2024-05-01
JP2023508314A (en) 2023-03-02
CN114929923A (en) 2022-08-19
CN114929923B (en) 2023-10-20
KR20210079830A (en) 2021-06-30

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