JPS55115926A - Production of high strength coil spring - Google Patents

Production of high strength coil spring

Info

Publication number
JPS55115926A
JPS55115926A JP2201379A JP2201379A JPS55115926A JP S55115926 A JPS55115926 A JP S55115926A JP 2201379 A JP2201379 A JP 2201379A JP 2201379 A JP2201379 A JP 2201379A JP S55115926 A JPS55115926 A JP S55115926A
Authority
JP
Japan
Prior art keywords
chuck
steel bar
coil spring
torsional strain
production
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.)
Granted
Application number
JP2201379A
Other languages
Japanese (ja)
Other versions
JPS5738652B2 (en
Inventor
Shinichi Suzuki
Takeshi Miki
Yutaka Tsuchida
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.)
Nippon Steel Corp
Original Assignee
Nippon Steel Corp
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 Nippon Steel Corp filed Critical Nippon Steel Corp
Priority to JP2201379A priority Critical patent/JPS55115926A/en
Publication of JPS55115926A publication Critical patent/JPS55115926A/en
Publication of JPS5738652B2 publication Critical patent/JPS5738652B2/ja
Granted 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

Abstract

PURPOSE:To produce the high-strength coil spring by heating a steel bar or steel wire to an austenite state and winding the same after giving torsional strain of 0.3 or more on the surface while pulling the steel bar or the like at 30-90% of its tensile yield strength during cooling or winding the same while giving torsional strain. CONSTITUTION:A steel bar or steel wire 1 is heated to an austenite state in a heating part 2, after which it is controlled and cooled to the specified temperature in a cooling part 3. This is sent to the chuck 5 of a torsion device by draw-out rollers 8. While the steel bar or the like 1 gripped by the chuck 5 is being pulled at 30- 90% of its tensile yield strength, it is torsion-worked by the revolution of the chuck 5, whereby the torsional strain of 0.3 or more is given at the surface. Next, it is cut with a cutter 4 and is formed to a coil spring by a coil former 6. Or the steel bar or the like out from the cooling part 3 is cut to a fixed length, after which one end thereof is gripped with the chuck 5 and is formed to the coil spring by the coil former 6 while being given with the specified torsional strain through revolution of the chuck 5.
JP2201379A 1979-02-28 1979-02-28 Production of high strength coil spring Granted JPS55115926A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP2201379A JPS55115926A (en) 1979-02-28 1979-02-28 Production of high strength coil spring

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP2201379A JPS55115926A (en) 1979-02-28 1979-02-28 Production of high strength coil spring

Publications (2)

Publication Number Publication Date
JPS55115926A true JPS55115926A (en) 1980-09-06
JPS5738652B2 JPS5738652B2 (en) 1982-08-17

Family

ID=12071108

Family Applications (1)

Application Number Title Priority Date Filing Date
JP2201379A Granted JPS55115926A (en) 1979-02-28 1979-02-28 Production of high strength coil spring

Country Status (1)

Country Link
JP (1) JPS55115926A (en)

Cited By (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPH02213422A (en) * 1989-02-14 1990-08-24 Nhk Spring Co Ltd Production of high strength spring
JPH02217421A (en) * 1989-02-17 1990-08-30 Nippon Steel Corp Production of spring with high fatigue strength and steel wire for use therein
JPH02274820A (en) * 1989-04-18 1990-11-09 Mitsubishi Steel Mfg Co Ltd Method and apparatus for automatically producing coil spring
WO2018118035A1 (en) * 2016-12-21 2018-06-28 Sealy Technology, Llc System and method of producing a coil for a mattress
CN108555194A (en) * 2018-04-26 2018-09-21 杨力 The shaping equipment of efficient spring manufacture

Families Citing this family (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN104438965B (en) * 2014-12-11 2016-06-22 天津鑫坤泰预应力专业技术有限公司 A kind of Winder of prestressing tendon

Cited By (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPH02213422A (en) * 1989-02-14 1990-08-24 Nhk Spring Co Ltd Production of high strength spring
JPH02217421A (en) * 1989-02-17 1990-08-30 Nippon Steel Corp Production of spring with high fatigue strength and steel wire for use therein
JPH02274820A (en) * 1989-04-18 1990-11-09 Mitsubishi Steel Mfg Co Ltd Method and apparatus for automatically producing coil spring
WO2018118035A1 (en) * 2016-12-21 2018-06-28 Sealy Technology, Llc System and method of producing a coil for a mattress
CN108555194A (en) * 2018-04-26 2018-09-21 杨力 The shaping equipment of efficient spring manufacture

Also Published As

Publication number Publication date
JPS5738652B2 (en) 1982-08-17

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