JPS5547317A - High frequency hardening apparatus - Google Patents

High frequency hardening apparatus

Info

Publication number
JPS5547317A
JPS5547317A JP12099578A JP12099578A JPS5547317A JP S5547317 A JPS5547317 A JP S5547317A JP 12099578 A JP12099578 A JP 12099578A JP 12099578 A JP12099578 A JP 12099578A JP S5547317 A JPS5547317 A JP S5547317A
Authority
JP
Japan
Prior art keywords
high frequency
voltage
hardening
integrated value
value
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
JP12099578A
Other languages
Japanese (ja)
Other versions
JPS5844126B2 (en
Inventor
Sueo Sakata
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.)
Mitsubishi Electric Corp
Original Assignee
Mitsubishi Electric Corp
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 Mitsubishi Electric Corp filed Critical Mitsubishi Electric Corp
Priority to JP53120995A priority Critical patent/JPS5844126B2/en
Publication of JPS5547317A publication Critical patent/JPS5547317A/en
Publication of JPS5844126B2 publication Critical patent/JPS5844126B2/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
    • C21D1/06—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

  • 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)
  • Control Of Heat Treatment Processes (AREA)

Abstract

PURPOSE:To previously prevent the anomalous hardening, by monitoring the integrated value of the high frequency supply voltage in respect of the time through the operation of cycle hardening of the high frequency hardening apparatus, and by deriving the alarm signal from the integrated value when it deviates from the set upper and lower limit values. CONSTITUTION:In case that the material 4 is to be high frequency hardened by the high frequency inductor 3, the output voltage EX of the power source 1 is derived by the potential transformer 5. This voltage EX is converted to DC microvoltage by AC/DC converter 6, and is converted to the frequency by V/F converter 7. This output is counted as the integrated value of voltage by the counter 8; and the counted value CX is compared with the set data CA of the lower limit setter 9 and with the set data CB of the upper limit setter 10. When the value CX deviates from the range limited by CA and CB, the alarm signal RY is derived, and the hardening apparatus is stopped; hereby, the anomalously hardened defective material is prevented from being sent to next process.
JP53120995A 1978-09-29 1978-09-29 Induction hardening equipment Expired JPS5844126B2 (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP53120995A JPS5844126B2 (en) 1978-09-29 1978-09-29 Induction hardening equipment

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP53120995A JPS5844126B2 (en) 1978-09-29 1978-09-29 Induction hardening equipment

Publications (2)

Publication Number Publication Date
JPS5547317A true JPS5547317A (en) 1980-04-03
JPS5844126B2 JPS5844126B2 (en) 1983-10-01

Family

ID=14800168

Family Applications (1)

Application Number Title Priority Date Filing Date
JP53120995A Expired JPS5844126B2 (en) 1978-09-29 1978-09-29 Induction hardening equipment

Country Status (1)

Country Link
JP (1) JPS5844126B2 (en)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP2015153753A (en) * 2014-02-12 2015-08-24 エマーク・ホールディング・ゲゼルシャフト・ミト・ベシュレンクテル・ハフツング Method for monitoring device for induction heating of member

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP2015153753A (en) * 2014-02-12 2015-08-24 エマーク・ホールディング・ゲゼルシャフト・ミト・ベシュレンクテル・ハフツング Method for monitoring device for induction heating of member
DE102014001935B4 (en) * 2014-02-12 2016-08-11 Emag Holding Gmbh Method for monitoring an apparatus for inductive heating

Also Published As

Publication number Publication date
JPS5844126B2 (en) 1983-10-01

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