DE59607551D1 - RELAXATION STEEL SPRING - Google Patents

RELAXATION STEEL SPRING

Info

Publication number
DE59607551D1
DE59607551D1 DE59607551T DE59607551T DE59607551D1 DE 59607551 D1 DE59607551 D1 DE 59607551D1 DE 59607551 T DE59607551 T DE 59607551T DE 59607551 T DE59607551 T DE 59607551T DE 59607551 D1 DE59607551 D1 DE 59607551D1
Authority
DE
Germany
Prior art keywords
spring
wire
steel spring
relaxation
free
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.)
Expired - Lifetime
Application number
DE59607551T
Other languages
German (de)
Inventor
Joachim Heinke
Klaus Wanke
Otto Zehendner
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.)
Datec Scherdel Datentechnik Forschungs und Entwicklungs GmbH
Original Assignee
Datec Scherdel Datentechnik Forschungs und Entwicklungs GmbH
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 Datec Scherdel Datentechnik Forschungs und Entwicklungs GmbH filed Critical Datec Scherdel Datentechnik Forschungs und Entwicklungs GmbH
Application granted granted Critical
Publication of DE59607551D1 publication Critical patent/DE59607551D1/en
Anticipated expiration legal-status Critical
Expired - Lifetime 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
    • C21D9/02—Heat treatment, e.g. annealing, hardening, quenching or tempering, adapted for particular articles; Furnaces therefor for springs
    • 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
    • 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

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)
  • Springs (AREA)
  • Heat Treatment Of Articles (AREA)
  • Heat Treatment Of Strip Materials And Filament Materials (AREA)

Abstract

The invention concerns a very strong steel spring having a bright surface which is free from residual dirt, the spring also being resistant to relaxation at high operating temperatures. A spring of this type is produced from a steel wire of the following composition: between 0.45 and 0.85 wt % carbon; between 0.2 and 1.60 wt % silicon; between 0.3 and 1.50 wt % manganese; between 0.4 and 1.2- wt % chromium; the remainder being iron and unavoidable impurities. The wire is austenitized and then treated isothermally at temperatures ranging from 450 to 650 DEG C. The wire is then drawn to a tensile strength of between 1600 and 2300 N/mm<2> at a contraction in area when breaking of at least 40 %. The wire is cold formed to produce a spring and is then stress-free annealed at temperatures ranging from 200 to 350 DEG C.
DE59607551T 1996-05-29 1996-05-29 RELAXATION STEEL SPRING Expired - Lifetime DE59607551D1 (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
PCT/DE1996/000935 WO1997045565A1 (en) 1996-05-29 1996-05-29 Relaxation-resistant steel spring

Publications (1)

Publication Number Publication Date
DE59607551D1 true DE59607551D1 (en) 2001-09-27

Family

ID=6918350

Family Applications (1)

Application Number Title Priority Date Filing Date
DE59607551T Expired - Lifetime DE59607551D1 (en) 1996-05-29 1996-05-29 RELAXATION STEEL SPRING

Country Status (6)

Country Link
EP (1) EP0906453B1 (en)
AT (1) ATE204612T1 (en)
AU (1) AU5810896A (en)
CA (1) CA2256384A1 (en)
DE (1) DE59607551D1 (en)
WO (1) WO1997045565A1 (en)

Families Citing this family (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO2018183499A1 (en) 2017-03-28 2018-10-04 National Oilwell DHT, L.P. Valves for actuating downhole shock tools in connection with concentric drive systems
CN107557671B (en) * 2017-10-26 2019-05-14 山东汽车弹簧厂淄博有限公司 Microalloying spring steel and preparation method thereof
CN107587079B (en) * 2017-10-26 2019-05-14 山东汽车弹簧厂淄博有限公司 Nitrogenous microalloying spring steel and preparation method thereof
CN109161629A (en) * 2018-08-16 2019-01-08 敬业钢铁有限公司 A kind of LF refining method of spring steel

Family Cites Families (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
SE404703C (en) * 1976-09-20 1986-06-23 Garphytte Bruk Ab VALVE SPRING ROW OF LAYER ALLOY STEEL
JPS5925024B2 (en) * 1980-06-26 1984-06-13 株式会社神戸製鋼所 steel for suspension springs
JPH0796697B2 (en) * 1986-10-24 1995-10-18 大同特殊鋼株式会社 High strength spring steel
JP2613601B2 (en) * 1987-09-25 1997-05-28 日産自動車株式会社 High strength spring
JPH0257637A (en) * 1988-08-23 1990-02-27 Nippon Steel Corp Manufacture of spring with high fatigue strength and steel wire for spring for use therein
CA2002138C (en) * 1988-11-08 1999-12-14 Susumu Yamamoto High-strength coil spring and method of producing same
JPH02240240A (en) * 1989-03-10 1990-09-25 Aisin Seiki Co Ltd Diaphragm spring of clutch for automobile use

Also Published As

Publication number Publication date
WO1997045565A1 (en) 1997-12-04
CA2256384A1 (en) 1997-12-04
EP0906453B1 (en) 2001-08-22
EP0906453A1 (en) 1999-04-07
AU5810896A (en) 1998-01-05
ATE204612T1 (en) 2001-09-15

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Legal Events

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8364 No opposition during term of opposition