GB1211585A - Improvements in or relating to apparatus for tempering springs in a spring coiling machine - Google Patents

Improvements in or relating to apparatus for tempering springs in a spring coiling machine

Info

Publication number
GB1211585A
GB1211585A GB23662/68A GB2366268A GB1211585A GB 1211585 A GB1211585 A GB 1211585A GB 23662/68 A GB23662/68 A GB 23662/68A GB 2366268 A GB2366268 A GB 2366268A GB 1211585 A GB1211585 A GB 1211585A
Authority
GB
United Kingdom
Prior art keywords
wire
spring
coiling
heating
current
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
Application number
GB23662/68A
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.)
INDUSTRIFJAEDRAR AB
Original Assignee
INDUSTRIFJAEDRAR AB
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 INDUSTRIFJAEDRAR AB filed Critical INDUSTRIFJAEDRAR AB
Publication of GB1211585A publication Critical patent/GB1211585A/en
Expired legal-status Critical Current

Links

Classifications

    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B21—MECHANICAL METAL-WORKING WITHOUT ESSENTIALLY REMOVING MATERIAL; PUNCHING METAL
    • B21F—WORKING OR PROCESSING OF METAL WIRE
    • B21F35/00—Making springs from wire
    • 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
    • C21D1/34—Methods of heating
    • C21D1/40—Direct resistance heating
    • 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
    • C21D9/54—Furnaces for treating strips or wire
    • C21D9/56—Continuous furnaces for strip or wire
    • C21D9/62—Continuous furnaces for strip or wire with direct resistance heating

Landscapes

  • Chemical & Material Sciences (AREA)
  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Physics & Mathematics (AREA)
  • Thermal Sciences (AREA)
  • Crystallography & Structural Chemistry (AREA)
  • Materials Engineering (AREA)
  • Metallurgy (AREA)
  • Organic Chemistry (AREA)
  • Wire Processing (AREA)

Abstract

1,211,585. Making springs; coiling. INDUSTRIFJADRAR A.B. 17 May, 1968 [17 May, 1967], No. 23662/68. Headings B3A and B3E. An apparatus for bending or coiling springs in which the tools IV, V and VI for bending or coiling a wire about a mandrel VII have means for passing an electric current through the spring for tempering is characterized in that the current intensity is regulated in relation to the speed of advancing the spring wire by control means comprising a tachometer generator 5 producing a control voltage connected by a voltage divider 6 to resistors 7, 8 and to a unit including a selectable number of diodes 9 in shunt and said unit converting the linear control voltage of the generator so that the voltage actuating the heating current control from being being linear in respect of the rotary speed of the wire feed rolls II and the generator becomes a logarithmic function of said feed and controls the heating current from a rectifier 3 so that heating varies relative to the speed of advance of the wire. The feed rolls are connected to the rectifier 3 the pole 4 of which is connected to the tool V to heat the wire. A device 10 ensures that a minimum current passes through the wire during short standstill periods when a coiled spring is being severed to prevent too great a fall in spring temperature. A wire guide III is provided with a heating coil 11 adjacent the mandrel and a cold air cooling nozzle VIII following the feed rolls. Oscilloscope terminals 12 and 14 are provided for checking the tempering operation.
GB23662/68A 1967-05-17 1968-05-17 Improvements in or relating to apparatus for tempering springs in a spring coiling machine Expired GB1211585A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
SE06878/67A SE347762B (en) 1967-05-17 1967-05-17

Publications (1)

Publication Number Publication Date
GB1211585A true GB1211585A (en) 1970-11-11

Family

ID=20269820

Family Applications (1)

Application Number Title Priority Date Filing Date
GB23662/68A Expired GB1211585A (en) 1967-05-17 1968-05-17 Improvements in or relating to apparatus for tempering springs in a spring coiling machine

Country Status (6)

Country Link
US (1) US3552168A (en)
CH (1) CH472922A (en)
DE (1) DE1752367A1 (en)
FR (1) FR1564377A (en)
GB (1) GB1211585A (en)
SE (1) SE347762B (en)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP3127629A4 (en) * 2014-03-25 2017-11-15 Daewon Kang Up Co., Ltd. Device for manufacturing hot-rolled coil spring

Families Citing this family (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE2629911C3 (en) * 1976-07-01 1980-06-04 Mannesmann Ag, 4000 Duesseldorf Method and device for continuous electrical resistance heating of an elongated item of finite length
SE420981B (en) * 1976-09-03 1981-11-16 Bulten Kanthal Ab SET TO HEAT A REALLY STRAIGHT TRADEMARK
GB0823067D0 (en) 2008-12-18 2009-01-28 Springform Technology Ltd Improvements related to the manufacture of coil springs
US11524354B2 (en) 2017-06-09 2022-12-13 Illinois Tool Works Inc. Systems, methods, and apparatus to control weld current in a preheating system
CA3073756A1 (en) * 2017-09-29 2019-04-04 Illinois Tool Works Inc. Systems, methods, and apparatus to preheat welding wire

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP3127629A4 (en) * 2014-03-25 2017-11-15 Daewon Kang Up Co., Ltd. Device for manufacturing hot-rolled coil spring

Also Published As

Publication number Publication date
DE1752367A1 (en) 1971-05-19
CH472922A (en) 1969-05-31
FR1564377A (en) 1969-04-18
SE347762B (en) 1972-08-14
US3552168A (en) 1971-01-05

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Legal Events

Date Code Title Description
PS Patent sealed [section 19, patents act 1949]
PCNP Patent ceased through non-payment of renewal fee