FR2402993A1 - Protection of electrodes in metal arc furnace - uses hydraulic system to detect undue force on electrodes and provide control to avoid damage - Google Patents

Protection of electrodes in metal arc furnace - uses hydraulic system to detect undue force on electrodes and provide control to avoid damage

Info

Publication number
FR2402993A1
FR2402993A1 FR7727555A FR7727555A FR2402993A1 FR 2402993 A1 FR2402993 A1 FR 2402993A1 FR 7727555 A FR7727555 A FR 7727555A FR 7727555 A FR7727555 A FR 7727555A FR 2402993 A1 FR2402993 A1 FR 2402993A1
Authority
FR
France
Prior art keywords
electrodes
protection
arc furnace
hydraulic system
provide control
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Withdrawn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
FR7727555A
Other languages
French (fr)
Inventor
Jean Broggi
Jacques Michelet
Jean Thebault
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.)
Institut de Recherches de la Siderurgie Francaise IRSID
Original Assignee
Institut de Recherches de la Siderurgie Francaise IRSID
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 Institut de Recherches de la Siderurgie Francaise IRSID filed Critical Institut de Recherches de la Siderurgie Francaise IRSID
Priority to FR7727555A priority Critical patent/FR2402993A1/en
Publication of FR2402993A1 publication Critical patent/FR2402993A1/en
Withdrawn legal-status Critical Current

Links

Classifications

    • H—ELECTRICITY
    • H05—ELECTRIC TECHNIQUES NOT OTHERWISE PROVIDED FOR
    • H05B—ELECTRIC HEATING; ELECTRIC LIGHT SOURCES NOT OTHERWISE PROVIDED FOR; CIRCUIT ARRANGEMENTS FOR ELECTRIC LIGHT SOURCES, IN GENERAL
    • H05B7/00—Heating by electric discharge
    • H05B7/02—Details
    • H05B7/10—Mountings, supports, terminals or arrangements for feeding or guiding electrodes
    • H05B7/101—Mountings, supports or terminals at head of electrode, i.e. at the end remote from the arc
    • H—ELECTRICITY
    • H05—ELECTRIC TECHNIQUES NOT OTHERWISE PROVIDED FOR
    • H05B—ELECTRIC HEATING; ELECTRIC LIGHT SOURCES NOT OTHERWISE PROVIDED FOR; CIRCUIT ARRANGEMENTS FOR ELECTRIC LIGHT SOURCES, IN GENERAL
    • H05B7/00—Heating by electric discharge
    • H05B7/02—Details
    • H05B7/144—Power supplies specially adapted for heating by electric discharge; Automatic control of power, e.g. by positioning of electrodes
    • H05B7/148—Automatic control of power
    • H05B7/156—Automatic control of power by hydraulic or pneumatic means for positioning of electrodes
    • 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)
  • Physics & Mathematics (AREA)
  • Plasma & Fusion (AREA)
  • Power Engineering (AREA)
  • Furnace Details (AREA)

Abstract

The protection of electrodes in an electric arc furnace includes measuring the magnitude of the force applied to the electrode conrol system. This allows the detection of any resistance occurring at the moment when the electrodes come into mechanical contact with a solid, non-conducting part of the furnace charge. The force is measured using the pressure of fluid in a hydraulic cylinder incorporated in the electrode positioning system. An electrohydraulic or electromechanical system provides the necessary counteracting force to prevent damage to the electrodes, when they come into contat with solid objects in the charge.
FR7727555A 1977-09-09 1977-09-09 Protection of electrodes in metal arc furnace - uses hydraulic system to detect undue force on electrodes and provide control to avoid damage Withdrawn FR2402993A1 (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
FR7727555A FR2402993A1 (en) 1977-09-09 1977-09-09 Protection of electrodes in metal arc furnace - uses hydraulic system to detect undue force on electrodes and provide control to avoid damage

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
FR7727555A FR2402993A1 (en) 1977-09-09 1977-09-09 Protection of electrodes in metal arc furnace - uses hydraulic system to detect undue force on electrodes and provide control to avoid damage

Publications (1)

Publication Number Publication Date
FR2402993A1 true FR2402993A1 (en) 1979-04-06

Family

ID=9195307

Family Applications (1)

Application Number Title Priority Date Filing Date
FR7727555A Withdrawn FR2402993A1 (en) 1977-09-09 1977-09-09 Protection of electrodes in metal arc furnace - uses hydraulic system to detect undue force on electrodes and provide control to avoid damage

Country Status (1)

Country Link
FR (1) FR2402993A1 (en)

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP0157104A1 (en) * 1984-02-24 1985-10-09 C. CONRADTY NÜRNBERG GmbH & Co. KG Method and apparatus for the heating and melting of materials
DE3810292A1 (en) * 1988-03-25 1989-10-05 Rexroth Mannesmann Gmbh Device for controlling an arc furnace by hydraulically adjusting the height of the electrode
EP0475008A1 (en) * 1990-07-23 1992-03-18 DANIELI & C. OFFICINE MECCANICHE S.p.A. Method and device to control the force applied to the electrode-bearing arms of an electric arc furnace

Cited By (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP0157104A1 (en) * 1984-02-24 1985-10-09 C. CONRADTY NÜRNBERG GmbH & Co. KG Method and apparatus for the heating and melting of materials
DE3810292A1 (en) * 1988-03-25 1989-10-05 Rexroth Mannesmann Gmbh Device for controlling an arc furnace by hydraulically adjusting the height of the electrode
EP0475008A1 (en) * 1990-07-23 1992-03-18 DANIELI & C. OFFICINE MECCANICHE S.p.A. Method and device to control the force applied to the electrode-bearing arms of an electric arc furnace
US5274664A (en) * 1990-07-23 1993-12-28 Danieli & C. Officine Meccaniche Spa Method and device to control the force applied to the electrode-bearing arms of an electric arc furnace

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Legal Events

Date Code Title Description
ST Notification of lapse