GB1178338A - A Method of and Apparatus for Inductively Heat Treating Steel Workpieces. - Google Patents

A Method of and Apparatus for Inductively Heat Treating Steel Workpieces.

Info

Publication number
GB1178338A
GB1178338A GB7139/68A GB713968A GB1178338A GB 1178338 A GB1178338 A GB 1178338A GB 7139/68 A GB7139/68 A GB 7139/68A GB 713968 A GB713968 A GB 713968A GB 1178338 A GB1178338 A GB 1178338A
Authority
GB
United Kingdom
Prior art keywords
workpiece
inductor
region
inductors
heating
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
GB7139/68A
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.)
SMS Elotherm GmbH
Original Assignee
AEG Elotherm 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 AEG Elotherm GmbH filed Critical AEG Elotherm GmbH
Publication of GB1178338A publication Critical patent/GB1178338A/en
Expired legal-status Critical Current

Links

Classifications

    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F27—FURNACES; KILNS; OVENS; RETORTS
    • F27D—DETAILS OR ACCESSORIES OF FURNACES, KILNS, OVENS, OR RETORTS, IN SO FAR AS THEY ARE OF KINDS OCCURRING IN MORE THAN ONE KIND OF FURNACE
    • F27D11/00—Arrangement of elements for electric heating in or on furnaces
    • F27D11/06—Induction heating, i.e. in which the material being heated, or its container or elements embodied therein, form the secondary of a transformer
    • 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
    • C21D1/06—Surface hardening
    • C21D1/09—Surface hardening by direct application of electrical or wave energy; by particle radiation
    • C21D1/10—Surface hardening by direct application of electrical or wave energy; by particle radiation by electric induction
    • Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
    • Y02P—CLIMATE CHANGE MITIGATION TECHNOLOGIES IN THE PRODUCTION OR PROCESSING OF GOODS
    • Y02P10/00—Technologies related to metal processing
    • Y02P10/25—Process efficiency

Landscapes

  • Engineering & Computer Science (AREA)
  • Chemical & Material Sciences (AREA)
  • Mechanical Engineering (AREA)
  • Power Engineering (AREA)
  • General Engineering & Computer Science (AREA)
  • Physics & Mathematics (AREA)
  • Thermal Sciences (AREA)
  • Crystallography & Structural Chemistry (AREA)
  • Materials Engineering (AREA)
  • Metallurgy (AREA)
  • Organic Chemistry (AREA)
  • Heat Treatment Of Articles (AREA)

Abstract

1,178,338. Heat treatment process and apparatus. AEG-ELOTHERM G.m.b.H. Feb.13, 1968 [April 29, 1967], No.7139/68. Heading C7N. [Also in Division H5] An elongate workpiece of varying diameter is heat-treated to produce a region which is toughened throughout its cross-section and a portion which is surface hardened by first heating the workpiece non-uniformly along its length by relative movement of it and an inductor, and then heating it by induction uniformly along its length, including the region that was first heated; the workpiece is then hardened by quenching. Apparatus for carrying out the process comprises one or more inductors and means for moving them along the workpiece, including means for reversing or retarding their motion in the region to be heattreated; there may also be means for controlling the power and/or frequency of the current supplied to the inductors according to the position of the latter in relation to the workpiece. In the embodiment illustrated, inductor 3 is caused to heat that region 8 of workpiece 7 which is to be throughhardened, while inductor 6 travels to the flanged end of the workpiece, and then moves slowly upward, heating the surface zone 9 which is then quenched by spray 13. Conditions are such that when inductor 6 reaches inductor 3 zone 8 will have been heated throughout, and the two inductors then move from the workpiece together. Movement of the inductors over the workpiece may be repeated to effect annealing and/or tempering.
GB7139/68A 1967-04-29 1968-02-13 A Method of and Apparatus for Inductively Heat Treating Steel Workpieces. Expired GB1178338A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
DEA0055597 1967-04-29

Publications (1)

Publication Number Publication Date
GB1178338A true GB1178338A (en) 1970-01-21

Family

ID=6940073

Family Applications (1)

Application Number Title Priority Date Filing Date
GB7139/68A Expired GB1178338A (en) 1967-04-29 1968-02-13 A Method of and Apparatus for Inductively Heat Treating Steel Workpieces.

Country Status (3)

Country Link
US (1) US3596037A (en)
DE (1) DE1533955C3 (en)
GB (1) GB1178338A (en)

Families Citing this family (12)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4401485A (en) * 1981-07-22 1983-08-30 Park-Ohio Industries, Inc. Method for inductively heating thin-walled elongated workpieces
US4418259A (en) * 1981-08-21 1983-11-29 Park-Ohio Industries, Inc. Method and apparatus of uniform induction heating of an elongated workpiece
US4433226A (en) * 1981-11-12 1984-02-21 Park-Ohio Industries, Inc. Method and apparatus for induction heating of an elongated workpiece
US4482793A (en) * 1982-03-15 1984-11-13 Park-Ohio Industries, Inc. Apparatus for simultaneously heating a plurality of elongated workpieces
US4501942A (en) * 1982-09-09 1985-02-26 Park-Ohio Industries, Inc. Method and apparatus for uniform induction heating of an elongated workpiece
US4894501A (en) * 1986-06-25 1990-01-16 Tocco, Inc. Method and apparatus for induction heating of gear teeth
WO1989001529A1 (en) * 1987-08-17 1989-02-23 A.E. Bishop & Associates Pty. Ltd. Control of straightness in scanning induction hardening of steel
DE10102991C2 (en) * 2000-02-19 2003-11-20 Ald Vacuum Techn Ag Device for heating a metal workpiece
US7010950B2 (en) * 2003-01-17 2006-03-14 Visteon Global Technologies, Inc. Suspension component having localized material strengthening
CN100505956C (en) * 2004-04-28 2009-06-24 高周波热炼株式会社 Induction heating coil and induction heating method for multi-step shaft member
DE102007029305A1 (en) * 2007-06-22 2008-12-24 Robert Bosch Gmbh Injection valve, method for its production and apparatus for carrying out the method
PL397937A1 (en) 2012-01-30 2013-08-05 General Electric Company Induction annealing system for turbine

Also Published As

Publication number Publication date
US3596037A (en) 1971-07-27
DE1533955B2 (en) 1973-04-05
DE1533955A1 (en) 1970-02-05
DE1533955C3 (en) 1973-10-25

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