EP0159029A3 - Verfahren und Vorrichtung zum Erhitzen von magnetisierbaren Metallwerkstücken - Google Patents

Verfahren und Vorrichtung zum Erhitzen von magnetisierbaren Metallwerkstücken Download PDF

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Publication number
EP0159029A3
EP0159029A3 EP85104660A EP85104660A EP0159029A3 EP 0159029 A3 EP0159029 A3 EP 0159029A3 EP 85104660 A EP85104660 A EP 85104660A EP 85104660 A EP85104660 A EP 85104660A EP 0159029 A3 EP0159029 A3 EP 0159029A3
Authority
EP
European Patent Office
Prior art keywords
temperature
workpieces
heating
work pieces
magnetizable metal
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.)
Withdrawn
Application number
EP85104660A
Other languages
English (en)
French (fr)
Other versions
EP0159029A2 (de
Inventor
Norbert Raymond Balzer
David Robert Soworowski
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.)
Park Ohio Holdings Corp
Original Assignee
Park Ohio Industries Inc
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
Priority claimed from US06/602,542 external-priority patent/US4577081A/en
Priority claimed from US06/602,914 external-priority patent/US4619717A/en
Application filed by Park Ohio Industries Inc filed Critical Park Ohio Industries Inc
Publication of EP0159029A2 publication Critical patent/EP0159029A2/de
Publication of EP0159029A3 publication Critical patent/EP0159029A3/de
Withdrawn legal-status Critical Current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
    • C21D9/00—Heat treatment, e.g. annealing, hardening, quenching or tempering, adapted for particular articles; Furnaces therefor
    • C21D9/0081—Heat treatment, e.g. annealing, hardening, quenching or tempering, adapted for particular articles; Furnaces therefor for slabs; for billets
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B21—MECHANICAL METAL-WORKING WITHOUT ESSENTIALLY REMOVING MATERIAL; PUNCHING METAL
    • B21J—FORGING; HAMMERING; PRESSING METAL; RIVETING; FORGE FURNACES
    • B21J1/00—Preparing metal stock or similar ancillary operations prior, during or post forging, e.g. heating or cooling
    • B21J1/06—Heating or cooling methods or arrangements specially adapted for performing forging or pressing operations
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B21—MECHANICAL METAL-WORKING WITHOUT ESSENTIALLY REMOVING MATERIAL; PUNCHING METAL
    • B21J—FORGING; HAMMERING; PRESSING METAL; RIVETING; FORGE FURNACES
    • B21J17/00—Forge furnaces
    • B21J17/02—Forge furnaces electrically heated
    • 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

Landscapes

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

Abstract

Verfahren und Vorrichtung zum Erhitzen von Werk­ stücken aus magnetisierbarem Metall auf eine erhöhte Bearbeitungstemperatur, bei dem die Werkstücke zunächst induktiv auf eine Vorwärmtemperatur (T₁) erhitzt werden, die nicht wesentlich über der Curiepunkt-Temperatur des Metalls liegt, aus dem die Werkstücke hergestellt sind, und daß dann die vorgewärmten Werkstücke in einem hochwirksamen, elektrischen Strahlheizofen (F) auf die vorgewählte erhöhte Endtemperatur (T₂) nacherhitzt werden, die beispielsweise die Schmiedetemperatur sein kann. Zum Vorwärmen werden die Werkstücke (W) schrittweise durch einen von einer In­ duktionsheizspule (32) umschlossenen Kanal (30) geleitet und von dort in die Heizkammer (92) eines elektrischen Strahlheizofens (F) geführt, durch den sie schrittweise hin­ durchgeleitet werden und in dem sie auf ihre Endtemperatur (T₂) gebracht werden.
EP85104660A 1984-04-20 1985-04-17 Verfahren und Vorrichtung zum Erhitzen von magnetisierbaren Metallwerkstücken Withdrawn EP0159029A3 (de)

Applications Claiming Priority (4)

Application Number Priority Date Filing Date Title
US06/602,542 US4577081A (en) 1984-04-20 1984-04-20 Heating nonmagnetic metal workpieces
US602542 1984-04-20
US602914 1984-04-23
US06/602,914 US4619717A (en) 1984-04-23 1984-04-23 Heating magnetic metal workpieces

Publications (2)

Publication Number Publication Date
EP0159029A2 EP0159029A2 (de) 1985-10-23
EP0159029A3 true EP0159029A3 (de) 1987-05-06

Family

ID=27084168

Family Applications (1)

Application Number Title Priority Date Filing Date
EP85104660A Withdrawn EP0159029A3 (de) 1984-04-20 1985-04-17 Verfahren und Vorrichtung zum Erhitzen von magnetisierbaren Metallwerkstücken

Country Status (1)

Country Link
EP (1) EP0159029A3 (de)

Citations (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2666830A (en) * 1949-12-21 1954-01-19 Asea Ab Method and furnace for heating bars to be forged by means of eddy currents
DE1145652B (de) * 1957-07-09 1963-03-21 Philips Patentverwaltung Einrichtung zur thermischen Nachbehandlung von metallenen Werkstuecken
US3419698A (en) * 1965-09-21 1968-12-31 Superior Electric Co Workpiece heating oven
DE2149352A1 (de) * 1970-10-05 1972-04-06 Park Ohio Industries Inc Verfahren und Vorrichtung zum Heizen einer Platte
US3912846A (en) * 1971-08-09 1975-10-14 Nippon Kokan Kk Apparatus for manufacturing steel plates coated with aluminium powder
FR2377857A1 (fr) * 1977-01-21 1978-08-18 Klein Tools Inc Four electrique a fente, notamment pour chauffage de l'acier aux temperatures de forgeage

Patent Citations (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2666830A (en) * 1949-12-21 1954-01-19 Asea Ab Method and furnace for heating bars to be forged by means of eddy currents
DE1145652B (de) * 1957-07-09 1963-03-21 Philips Patentverwaltung Einrichtung zur thermischen Nachbehandlung von metallenen Werkstuecken
US3419698A (en) * 1965-09-21 1968-12-31 Superior Electric Co Workpiece heating oven
DE2149352A1 (de) * 1970-10-05 1972-04-06 Park Ohio Industries Inc Verfahren und Vorrichtung zum Heizen einer Platte
US3912846A (en) * 1971-08-09 1975-10-14 Nippon Kokan Kk Apparatus for manufacturing steel plates coated with aluminium powder
FR2377857A1 (fr) * 1977-01-21 1978-08-18 Klein Tools Inc Four electrique a fente, notamment pour chauffage de l'acier aux temperatures de forgeage

Also Published As

Publication number Publication date
EP0159029A2 (de) 1985-10-23

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Withdrawal date: 19870818

RIN1 Information on inventor provided before grant (corrected)

Inventor name: BALZER, NORBERT RAYMOND

Inventor name: SOWOROWSKI, DAVID ROBERT