EP3088551A4 - Rolled steel material for high-strength spring and wire for high-strength spring using same - Google Patents

Rolled steel material for high-strength spring and wire for high-strength spring using same Download PDF

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Publication number
EP3088551A4
EP3088551A4 EP14875039.1A EP14875039A EP3088551A4 EP 3088551 A4 EP3088551 A4 EP 3088551A4 EP 14875039 A EP14875039 A EP 14875039A EP 3088551 A4 EP3088551 A4 EP 3088551A4
Authority
EP
European Patent Office
Prior art keywords
strength spring
wire
same
steel material
rolled steel
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Withdrawn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
EP14875039.1A
Other languages
German (de)
French (fr)
Other versions
EP3088551A1 (en
Inventor
Atsuhiko TAKEDA
Tomokazu Masuda
Sho Takayama
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.)
Kobe Steel Ltd
Original Assignee
Kobe Steel 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
Family has litigation
First worldwide family litigation filed litigation Critical https://patents.darts-ip.com/?family=53478395&utm_source=google_patent&utm_medium=platform_link&utm_campaign=public_patent_search&patent=EP3088551(A4) "Global patent litigation dataset” by Darts-ip is licensed under a Creative Commons Attribution 4.0 International License.
Application filed by Kobe Steel Ltd filed Critical Kobe Steel Ltd
Publication of EP3088551A1 publication Critical patent/EP3088551A1/en
Publication of EP3088551A4 publication Critical patent/EP3088551A4/en
Withdrawn legal-status Critical Current

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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
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B21—MECHANICAL METAL-WORKING WITHOUT ESSENTIALLY REMOVING MATERIAL; PUNCHING METAL
    • B21C—MANUFACTURE OF METAL SHEETS, WIRE, RODS, TUBES OR PROFILES, OTHERWISE THAN BY ROLLING; AUXILIARY OPERATIONS USED IN CONNECTION WITH METAL-WORKING WITHOUT ESSENTIALLY REMOVING MATERIAL
    • B21C1/00—Manufacture of metal sheets, metal wire, metal rods, metal tubes by drawing
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B21—MECHANICAL METAL-WORKING WITHOUT ESSENTIALLY REMOVING MATERIAL; PUNCHING METAL
    • B21C—MANUFACTURE OF METAL SHEETS, WIRE, RODS, TUBES OR PROFILES, OTHERWISE THAN BY ROLLING; AUXILIARY OPERATIONS USED IN CONNECTION WITH METAL-WORKING WITHOUT ESSENTIALLY REMOVING MATERIAL
    • B21C1/00—Manufacture of metal sheets, metal wire, metal rods, metal tubes by drawing
    • B21C1/003—Drawing materials of special alloys so far as the composition of the alloy requires or permits special drawing methods or sequences
    • 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
    • C21D3/00—Diffusion processes for extraction of non-metals; Furnaces therefor
    • C21D3/02—Extraction of non-metals
    • C21D3/06—Extraction of hydrogen
    • 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
    • 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
    • C22C38/002—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
    • C22C38/12—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
    • C22—METALLURGY; FERROUS OR NON-FERROUS ALLOYS; TREATMENT OF ALLOYS OR NON-FERROUS METALS
    • C22C—ALLOYS
    • C22C38/00—Ferrous alloys, e.g. steel alloys
    • C22C38/16—Ferrous alloys, e.g. steel alloys containing copper
    • 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
    • C22C38/34—Ferrous alloys, e.g. steel alloys containing chromium with more than 1.5% by weight of 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
    • C22C38/18—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
    • 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
    • C22C38/54—Ferrous alloys, e.g. steel alloys containing chromium with nickel with boron
    • 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
    • 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
    • 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
    • C21D2261/00—Machining or cutting being involved

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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)
  • Manufacturing & Machinery (AREA)
  • Heat Treatment Of Steel (AREA)
  • Metal Extraction Processes (AREA)
  • Heat Treatment Of Strip Materials And Filament Materials (AREA)
EP14875039.1A 2013-12-27 2014-12-10 Rolled steel material for high-strength spring and wire for high-strength spring using same Withdrawn EP3088551A4 (en)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
JP2013272569 2013-12-27
PCT/JP2014/082728 WO2015098531A1 (en) 2013-12-27 2014-12-10 Rolled steel material for high-strength spring and wire for high-strength spring using same

Publications (2)

Publication Number Publication Date
EP3088551A1 EP3088551A1 (en) 2016-11-02
EP3088551A4 true EP3088551A4 (en) 2017-08-23

Family

ID=53478395

Family Applications (1)

Application Number Title Priority Date Filing Date
EP14875039.1A Withdrawn EP3088551A4 (en) 2013-12-27 2014-12-10 Rolled steel material for high-strength spring and wire for high-strength spring using same

Country Status (8)

Country Link
US (1) US20160319393A1 (en)
EP (1) EP3088551A4 (en)
JP (1) JP6212473B2 (en)
KR (1) KR20160102526A (en)
CN (2) CN109112262A (en)
MX (1) MX2016008501A (en)
TW (1) TWI535860B (en)
WO (1) WO2015098531A1 (en)

Families Citing this family (9)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP6452454B2 (en) * 2014-02-28 2019-01-16 株式会社神戸製鋼所 Rolled material for high strength spring and wire for high strength spring
JP6458927B2 (en) * 2014-10-07 2019-01-30 大同特殊鋼株式会社 High-strength spring steel with excellent wire rod rollability
WO2017122827A1 (en) * 2016-01-15 2017-07-20 株式会社神戸製鋼所 Wire for high-strength spring, and method for producing same
WO2017122828A1 (en) * 2016-01-15 2017-07-20 株式会社神戸製鋼所 Rolled material for high-strength spring
WO2018230717A1 (en) 2017-06-15 2018-12-20 新日鐵住金株式会社 Rolled wire for spring steel
WO2019003397A1 (en) * 2017-06-28 2019-01-03 三菱製鋼株式会社 Method for manufacturing hollow stabilizer
KR102020385B1 (en) 2017-09-29 2019-11-04 주식회사 포스코 Steel wire rod and steel wire for spring having corrosion fatigue resistance and method of manufacturing thereof
JP7226548B2 (en) 2019-06-19 2023-02-21 日本製鉄株式会社 wire
EP3796101A1 (en) * 2019-09-20 2021-03-24 Nivarox-FAR S.A. Hairspring for clock movement

Citations (8)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US5776267A (en) * 1995-10-27 1998-07-07 Kabushiki Kaisha Kobe Seiko Sho Spring steel with excellent resistance to hydrogen embrittlement and fatigue
JP2005023404A (en) * 2003-07-01 2005-01-27 Kobe Steel Ltd Steel for spring excellent in corrosion fatigue resistance
US20070125456A1 (en) * 2005-12-02 2007-06-07 Kabushiki Kaisha Kobe Seiko Sho (Kobe Steel, Ltd.) High strength spring steel wire with excellent coiling properties and hydrogen embrittlement resistance
EP1985721A1 (en) * 2006-01-23 2008-10-29 Kabushiki Kaisha Kobe Seiko Sho High-strength spring steel excellent in brittle fracture resistance and method for producing same
EP2017358A2 (en) * 2007-07-20 2009-01-21 Kabushiki Kaisha Kobe Seiko Sho Steel wire material for spring and its producing method
EP2096184A1 (en) * 2006-10-31 2009-09-02 Kabushiki Kaisha Kobe Seiko Sho Steel wire for spring excellent in fatigue property and drawing property
JP2012172247A (en) * 2011-02-24 2012-09-10 Nippon Steel Corp Steel for high strength spring, excellent in hydrogen embrittlement resistance
EP3112491A1 (en) * 2014-02-28 2017-01-04 Kabushiki Kaisha Kobe Seiko Sho (Kobe Steel, Ltd.) Rolled material for high strength spring, and wire for high strength spring

Family Cites Families (23)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS63317626A (en) * 1987-06-19 1988-12-26 Kobe Steel Ltd Production of ultra-high strength extremely fine wire
JPS6487746A (en) * 1987-06-19 1989-03-31 Kobe Steel Ltd Ultra-high-strength extra fine wire
JPH01224540A (en) * 1988-02-29 1989-09-07 Kobe Steel Ltd Fine spring
US5951944A (en) * 1994-12-21 1999-09-14 Mitsubishi Steel Mfg. Co., Ltd. Lowly decarburizable spring steel
JP3816721B2 (en) * 2000-04-07 2006-08-30 株式会社神戸製鋼所 High strength wire rod excellent in delayed fracture resistance and under neck toughness, or delayed fracture resistance, forgeability and under neck toughness, and method for producing the same
JP4261760B2 (en) * 2000-10-10 2009-04-30 新日本製鐵株式会社 High strength spring steel excellent in hydrogen fatigue fracture resistance and manufacturing method thereof
JP3918587B2 (en) * 2002-03-07 2007-05-23 大同特殊鋼株式会社 Spring steel for cold forming
JP3764715B2 (en) 2002-10-22 2006-04-12 新日本製鐵株式会社 Steel wire for high-strength cold forming spring and its manufacturing method
JP4008391B2 (en) * 2003-07-11 2007-11-14 株式会社神戸製鋼所 High strength steel with excellent hydrogen embrittlement resistance and method for producing the same
JP4555768B2 (en) 2004-11-30 2010-10-06 新日本製鐵株式会社 Steel wire for high strength spring
JP4476846B2 (en) * 2005-03-03 2010-06-09 株式会社神戸製鋼所 High strength spring steel with excellent cold workability and quality stability
JP4423253B2 (en) * 2005-11-02 2010-03-03 株式会社神戸製鋼所 Spring steel excellent in hydrogen embrittlement resistance, and steel wire and spring obtained from the steel
JP4393467B2 (en) * 2006-02-28 2010-01-06 株式会社神戸製鋼所 Hot rolled wire rod for strong wire drawing and manufacturing method thereof
JP2007327084A (en) * 2006-06-06 2007-12-20 Kobe Steel Ltd Wire rod having excellent wire drawability and its production method
KR100797327B1 (en) * 2006-10-11 2008-01-22 주식회사 포스코 Steel wire rod for high strength and high toughness spring having excellent cold workability, method for producing the same and method for producing spring by using the same
US8734599B2 (en) * 2006-10-11 2014-05-27 Posco Steel wire rod for high strength and high toughness spring having excellent cold workability, method for producing the same and method for producing spring by using the same
JP4699342B2 (en) * 2006-11-17 2011-06-08 株式会社神戸製鋼所 High strength non-tempered steel for cold forging with excellent fatigue limit ratio
JP5157230B2 (en) * 2007-04-13 2013-03-06 新日鐵住金株式会社 High carbon steel wire rod with excellent wire drawing workability
CN101624679B (en) * 2007-07-20 2011-08-17 株式会社神户制钢所 Steel wire material for spring and its producing method
JP4694537B2 (en) * 2007-07-23 2011-06-08 株式会社神戸製鋼所 Spring wire with excellent fatigue characteristics
JP5121360B2 (en) * 2007-09-10 2013-01-16 株式会社神戸製鋼所 Spring steel wire rod excellent in decarburization resistance and wire drawing workability, and method for producing the same
JP5476598B2 (en) * 2010-03-04 2014-04-23 株式会社神戸製鋼所 Manufacturing method of seamless steel pipe for high strength hollow spring
JP5250609B2 (en) * 2010-11-11 2013-07-31 日本発條株式会社 Steel for high strength spring, method for producing high strength spring, and high strength spring

Patent Citations (8)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US5776267A (en) * 1995-10-27 1998-07-07 Kabushiki Kaisha Kobe Seiko Sho Spring steel with excellent resistance to hydrogen embrittlement and fatigue
JP2005023404A (en) * 2003-07-01 2005-01-27 Kobe Steel Ltd Steel for spring excellent in corrosion fatigue resistance
US20070125456A1 (en) * 2005-12-02 2007-06-07 Kabushiki Kaisha Kobe Seiko Sho (Kobe Steel, Ltd.) High strength spring steel wire with excellent coiling properties and hydrogen embrittlement resistance
EP1985721A1 (en) * 2006-01-23 2008-10-29 Kabushiki Kaisha Kobe Seiko Sho High-strength spring steel excellent in brittle fracture resistance and method for producing same
EP2096184A1 (en) * 2006-10-31 2009-09-02 Kabushiki Kaisha Kobe Seiko Sho Steel wire for spring excellent in fatigue property and drawing property
EP2017358A2 (en) * 2007-07-20 2009-01-21 Kabushiki Kaisha Kobe Seiko Sho Steel wire material for spring and its producing method
JP2012172247A (en) * 2011-02-24 2012-09-10 Nippon Steel Corp Steel for high strength spring, excellent in hydrogen embrittlement resistance
EP3112491A1 (en) * 2014-02-28 2017-01-04 Kabushiki Kaisha Kobe Seiko Sho (Kobe Steel, Ltd.) Rolled material for high strength spring, and wire for high strength spring

Non-Patent Citations (1)

* Cited by examiner, † Cited by third party
Title
See also references of WO2015098531A1 *

Also Published As

Publication number Publication date
US20160319393A1 (en) 2016-11-03
KR20160102526A (en) 2016-08-30
CN105849297A (en) 2016-08-10
TW201538747A (en) 2015-10-16
MX2016008501A (en) 2016-09-14
CN109112262A (en) 2019-01-01
JP6212473B2 (en) 2017-10-11
JP2015143391A (en) 2015-08-06
EP3088551A1 (en) 2016-11-02
WO2015098531A1 (en) 2015-07-02
TWI535860B (en) 2016-06-01

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