GB637008A - Method and apparatus for heat treatment by means of high frequency electric current - Google Patents

Method and apparatus for heat treatment by means of high frequency electric current

Info

Publication number
GB637008A
GB637008A GB11901/48A GB1190148A GB637008A GB 637008 A GB637008 A GB 637008A GB 11901/48 A GB11901/48 A GB 11901/48A GB 1190148 A GB1190148 A GB 1190148A GB 637008 A GB637008 A GB 637008A
Authority
GB
United Kingdom
Prior art keywords
stage
heat treatment
high frequency
electric current
frequency electric
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
GB11901/48A
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.)
ALMANNA SVENSKA ELEK SKA AKTIE
Original Assignee
ALMANNA SVENSKA ELEK SKA AKTIE
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 ALMANNA SVENSKA ELEK SKA AKTIE filed Critical ALMANNA SVENSKA ELEK SKA AKTIE
Priority to GB11901/48A priority Critical patent/GB637008A/en
Publication of GB637008A publication Critical patent/GB637008A/en
Expired 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
    • C21D1/00—General methods or devices for heat treatment, e.g. annealing, hardening, quenching or tempering
    • C21D1/34—Methods of heating
    • C21D1/42—Induction heating
    • 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

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

Abstract

637,008. Induction heating. DREYFUS, L., and ALLMANNA SVENSKA ELEKTRISKA AKTIEBOLAGET. April 30, 1948, No. 11901. [Class 39 (iii)] A method of heating a metallic workpiece comprises two stages ; during the first stage a comparatively large amount of power is supplied to the workpiece to raise the surface temperature rapidly; during the second stage the power supplied to the workpiece is gradually decreased according to the formula P=Poe -t/T where Po= power supplied at first stage, t=time from commencement of decrease and T=time constant dependent on the nature of the material.
GB11901/48A 1948-04-30 1948-04-30 Method and apparatus for heat treatment by means of high frequency electric current Expired GB637008A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
GB11901/48A GB637008A (en) 1948-04-30 1948-04-30 Method and apparatus for heat treatment by means of high frequency electric current

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
GB11901/48A GB637008A (en) 1948-04-30 1948-04-30 Method and apparatus for heat treatment by means of high frequency electric current

Publications (1)

Publication Number Publication Date
GB637008A true GB637008A (en) 1950-05-10

Family

ID=9994729

Family Applications (1)

Application Number Title Priority Date Filing Date
GB11901/48A Expired GB637008A (en) 1948-04-30 1948-04-30 Method and apparatus for heat treatment by means of high frequency electric current

Country Status (1)

Country Link
GB (1) GB637008A (en)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP0232477A1 (en) * 1985-12-19 1987-08-19 BBC Brown Boveri AG Process for zone-annealing of metal workpieces

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP0232477A1 (en) * 1985-12-19 1987-08-19 BBC Brown Boveri AG Process for zone-annealing of metal workpieces

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