JPS5770043A - Method for manufacture tapered coiled spring - Google Patents

Method for manufacture tapered coiled spring

Info

Publication number
JPS5770043A
JPS5770043A JP14643580A JP14643580A JPS5770043A JP S5770043 A JPS5770043 A JP S5770043A JP 14643580 A JP14643580 A JP 14643580A JP 14643580 A JP14643580 A JP 14643580A JP S5770043 A JPS5770043 A JP S5770043A
Authority
JP
Japan
Prior art keywords
crude material
heating
tempering
heated
shape under
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
JP14643580A
Other languages
Japanese (ja)
Inventor
Toyoyuki Tono
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.)
NHK Spring Co Ltd
Original Assignee
NHK Spring 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 NHK Spring Co Ltd filed Critical NHK Spring Co Ltd
Priority to JP14643580A priority Critical patent/JPS5770043A/en
Publication of JPS5770043A publication Critical patent/JPS5770043A/en
Pending legal-status Critical Current

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Abstract

PURPOSE: To reduce energy consumptions and to improve qualities of the product, by forming crude materials for making spring to have a tapered shape under a condition where the crude material is heated to a prescribed temperature, and then, by forming the crude material to have a coiled shape under a cold condition after the crude material is treated by quenching and tempering without heating the crude material again.
CONSTITUTION: In a heating process a crude material for making spring is heated to a prescribed temperature, and the heated crude material is formed to become linear or non-linear coiled conditions in a taper working process. Then, the crude material is subjected to a quenching treatment without heating the crude material again in a succeeding quenching process. The quenched crude material is treated by tempering in a tempering process, and then, the crude material is formed to have a desired coiled shape under a cold condition in a coiling process. In this way, heating processes are reduced in number and, as the result of this arrangement, the energy consumption is reduced. Moreover, qualities of the product and productivity are improved.
COPYRIGHT: (C)1982,JPO&Japio
JP14643580A 1980-10-20 1980-10-20 Method for manufacture tapered coiled spring Pending JPS5770043A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP14643580A JPS5770043A (en) 1980-10-20 1980-10-20 Method for manufacture tapered coiled spring

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP14643580A JPS5770043A (en) 1980-10-20 1980-10-20 Method for manufacture tapered coiled spring

Publications (1)

Publication Number Publication Date
JPS5770043A true JPS5770043A (en) 1982-04-30

Family

ID=15407594

Family Applications (1)

Application Number Title Priority Date Filing Date
JP14643580A Pending JPS5770043A (en) 1980-10-20 1980-10-20 Method for manufacture tapered coiled spring

Country Status (1)

Country Link
JP (1) JPS5770043A (en)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO2002038817A1 (en) * 2000-11-10 2002-05-16 Neturen Co., Ltd. Double-taper steel wire and continuous heat treating method and device therefor

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO2002038817A1 (en) * 2000-11-10 2002-05-16 Neturen Co., Ltd. Double-taper steel wire and continuous heat treating method and device therefor
US7011720B2 (en) 2000-11-10 2006-03-14 Neturen Co., Ltd. Double-taper steel wire and continuous heat treating method and device therefor

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