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JPS5711741A - Production of coil spring - Google Patents

Production of coil spring

Info

Publication number
JPS5711741A
JPS5711741A JP8645280A JP8645280A JPS5711741A JP S5711741 A JPS5711741 A JP S5711741A JP 8645280 A JP8645280 A JP 8645280A JP 8645280 A JP8645280 A JP 8645280A JP S5711741 A JPS5711741 A JP S5711741A
Authority
JP
Japan
Prior art keywords
temp
coil
wire
cold
coil material
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
JP8645280A
Other languages
Japanese (ja)
Other versions
JPS6359775B2 (en
Inventor
Kazuhiro Kawasaki
Yoshiki Seto
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.)
Neturen Co Ltd
Koshuha Netsuren KK
Original Assignee
Neturen Co Ltd
Koshuha Netsuren KK
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 Neturen Co Ltd, Koshuha Netsuren KK filed Critical Neturen Co Ltd
Priority to JP8645280A priority Critical patent/JPS5711741A/en
Publication of JPS5711741A publication Critical patent/JPS5711741A/en
Publication of JPS6359775B2 publication Critical patent/JPS6359775B2/ja
Granted legal-status Critical Current

Links

Landscapes

  • Springs (AREA)
  • Wire Processing (AREA)
  • Heat Treatment Of Articles (AREA)

Abstract

PURPOSE: To improve durability and improve permanent set resistance by quickly heating a coil material obtained by cold-coiling and cutting to above an austenitization temp. then subjecting the same to hardening and tempering.
CONSTITUTION: A blank wire marerial as rolled is fed continuously to a coiling machine after pickling and scalping and drawing processes for the purpose of controlling wire sizes, whereby it is cold-formed to a coil of a desired-barrel shape; thereafter it is cut and a coil material is obtained. This coil material is quickly heated by direct electric conduction such as gripping both terminals thereof with clamp type electrodes or the like. When the entire section of the wire material attains a temp. above its austenitizatin temp., for example, 900W1,000°C, the electric conduction is stopped, whereby it is hardened. Thence, it is tempered at ordinary tempering temps. in an electric furnace, after which it is subjected to post treatments such as shot peening, whereby the barrel-shaped coil spring is obtained.
COPYRIGHT: (C)1982,JPO&Japio
JP8645280A 1980-06-27 1980-06-27 Production of coil spring Granted JPS5711741A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP8645280A JPS5711741A (en) 1980-06-27 1980-06-27 Production of coil spring

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP8645280A JPS5711741A (en) 1980-06-27 1980-06-27 Production of coil spring

Publications (2)

Publication Number Publication Date
JPS5711741A true JPS5711741A (en) 1982-01-21
JPS6359775B2 JPS6359775B2 (en) 1988-11-21

Family

ID=13887320

Family Applications (1)

Application Number Title Priority Date Filing Date
JP8645280A Granted JPS5711741A (en) 1980-06-27 1980-06-27 Production of coil spring

Country Status (1)

Country Link
JP (1) JPS5711741A (en)

Cited By (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS6130246A (en) * 1984-07-19 1986-02-12 Toshikazu Okuno Heating device of spring
JPS6171139A (en) * 1984-09-13 1986-04-12 France Bed Co Unit spring manufacturing equipment
US9814100B2 (en) 2009-08-07 2017-11-07 Radyne Corporation Heat treatment of helical springs or similarly shaped articles by electric resistance heating
WO2024075314A1 (en) * 2022-10-05 2024-04-11 日本発條株式会社 Coil spring manufacturing method

Citations (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS5289514A (en) * 1976-01-22 1977-07-27 Koshuha Netsuren Kk Coil spring

Patent Citations (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS5289514A (en) * 1976-01-22 1977-07-27 Koshuha Netsuren Kk Coil spring

Cited By (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS6130246A (en) * 1984-07-19 1986-02-12 Toshikazu Okuno Heating device of spring
JPS6171139A (en) * 1984-09-13 1986-04-12 France Bed Co Unit spring manufacturing equipment
JPH0150500B2 (en) * 1984-09-13 1989-10-30 France Bed Co
US9814100B2 (en) 2009-08-07 2017-11-07 Radyne Corporation Heat treatment of helical springs or similarly shaped articles by electric resistance heating
WO2024075314A1 (en) * 2022-10-05 2024-04-11 日本発條株式会社 Coil spring manufacturing method

Also Published As

Publication number Publication date
JPS6359775B2 (en) 1988-11-21

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