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IT1271764B - Impianto di forno ad arco a corrente continua - Google Patents

Impianto di forno ad arco a corrente continua

Info

Publication number
IT1271764B
IT1271764B ITMI940504A ITMI940504A IT1271764B IT 1271764 B IT1271764 B IT 1271764B IT MI940504 A ITMI940504 A IT MI940504A IT MI940504 A ITMI940504 A IT MI940504A IT 1271764 B IT1271764 B IT 1271764B
Authority
IT
Italy
Prior art keywords
current
direct current
oven
regulator
frequency
Prior art date
Application number
ITMI940504A
Other languages
English (en)
Inventor
Ernst Wanner
Original Assignee
Abb Management Ag
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 Abb Management Ag filed Critical Abb Management Ag
Publication of ITMI940504A0 publication Critical patent/ITMI940504A0/it
Publication of ITMI940504A1 publication Critical patent/ITMI940504A1/it
Application granted granted Critical
Publication of IT1271764B publication Critical patent/IT1271764B/it

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
    • H05B7/144—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
    • C—CHEMISTRY; METALLURGY
    • C21—METALLURGY OF IRON
    • C21C—PROCESSING OF PIG-IRON, e.g. REFINING, MANUFACTURE OF WROUGHT-IRON OR STEEL; TREATMENT IN MOLTEN STATE OF FERROUS ALLOYS
    • C21C5/00—Manufacture of carbon-steel, e.g. plain mild steel, medium carbon steel or cast steel or stainless steel
    • C21C5/52—Manufacture of steel in electric furnaces
    • C21C5/5229—Manufacture of steel in electric furnaces in a direct current [DC] electric arc furnace
    • 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
    • Y02P10/20—Recycling
    • 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)
  • Power Engineering (AREA)
  • Physics & Mathematics (AREA)
  • Plasma & Fusion (AREA)
  • Materials Engineering (AREA)
  • Manufacturing & Machinery (AREA)
  • Metallurgy (AREA)
  • Organic Chemistry (AREA)
  • Discharge Heating (AREA)
  • Supply And Distribution Of Alternating Current (AREA)
  • Compositions Of Oxide Ceramics (AREA)
  • Vertical, Hearth, Or Arc Furnaces (AREA)
  • Furnace Details (AREA)

Abstract

L'impianto di forno ad arco a corrente continua comprende un recipiente del forno (8), uno o più elettrodi (7) dell'arco voltaico inseriti come catodo, un contatto del fondo (12) inserito come anodo, un trasformatore (2) del forno ed una disposizione di convertitore statico di corrente (5) per l'alimentazione del forno, come pure un dispositivo (E) di regolazione degli elettrodi, ed un regolatore di corrente (I). Nel circuito principale della corrente continua è inserita una bobina (6). Al circuito di regolazione della corrente (1) è subordinato un circuito di regolazione della tensione (P), laddove la tensione di uscita del regolatore di corrente (14) fornisce il valore nominale per il regolatore di tensione (24). A valle di questo regolatore di tensione (24) è inserito un filtro (25) accordato sulla frequenza degli sfarfallamenti, con una caratteristica di frequenza che è accordata sulla sensibilità alla frequenza
ITMI940504A 1993-03-25 1994-03-18 Impianto di forno ad arco a corrente continua IT1271764B (it)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
DE4309640A DE4309640A1 (de) 1993-03-25 1993-03-25 Gleichstrom-Lichtbogenofenanlage

Publications (3)

Publication Number Publication Date
ITMI940504A0 ITMI940504A0 (it) 1994-03-18
ITMI940504A1 ITMI940504A1 (it) 1995-09-18
IT1271764B true IT1271764B (it) 1997-06-09

Family

ID=6483780

Family Applications (1)

Application Number Title Priority Date Filing Date
ITMI940504A IT1271764B (it) 1993-03-25 1994-03-18 Impianto di forno ad arco a corrente continua

Country Status (4)

Country Link
US (1) US5438588A (it)
JP (1) JPH06325867A (it)
DE (1) DE4309640A1 (it)
IT (1) IT1271764B (it)

Families Citing this family (26)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
SE501025C2 (sv) * 1993-03-18 1994-10-24 Asea Brown Boveri Ugnsutrustning
DE4327894A1 (de) * 1993-08-19 1995-02-23 Abb Management Ag Verfahren zur Stabilisierung eines Stromnetzes gegen Blindlastschwankungen und Blindleistungskompensationseinrichtung
DE4343899A1 (de) * 1993-12-22 1995-06-29 Abb Management Ag Regelungsverfahren für einen Gleichstromlichtbogenofen
DE19515210C2 (de) * 1995-04-28 2001-03-01 Reinhard Kalfhaus Schaltnetzteil, insbesondere Netzregenerator
US5991327A (en) * 1995-10-26 1999-11-23 Inverpower Controls Ltd. Smart predictive line controller for AC and DC electric arc furnaces
US5818208A (en) * 1996-12-19 1998-10-06 Abb Power T&D Company Inc. Flicker controllers using voltage source converters
US5930284A (en) * 1997-01-15 1999-07-27 Sandia Corporation Multiple input electrode gap controller
AU757828B2 (en) * 1998-10-28 2003-03-06 Anglo Operations Limited DC arc furnace operation
US6163019A (en) * 1999-03-05 2000-12-19 Abb Metallurgy Resonant frequency induction furnace system using capacitive voltage division
US6274851B1 (en) 1999-08-31 2001-08-14 Inverpower Controls Ltd. Electric arc furnace controller
US6603795B2 (en) 2001-02-08 2003-08-05 Hatch Associates Ltd. Power control system for AC electric arc furnace
FR2825566B1 (fr) * 2001-06-01 2003-07-18 Ansaldo Loire Automation Regulation four a arc continu
US6573691B2 (en) 2001-10-17 2003-06-03 Hatch Associates Ltd. Control system and method for voltage stabilization in electric power system
UA74047C2 (en) * 2003-08-26 2005-10-17 Anatolii Tymofiiovych Neklesa Control device for an arc apparatus
WO2006024149A1 (en) 2004-09-01 2006-03-09 Hatch Ltd. System and method for minimizing loss of electrical conduction during input of feed material to a furnace
US20080056327A1 (en) * 2006-08-30 2008-03-06 Hatch Ltd. Method and system for predictive electrode lowering in a furnace
DE102010042781A1 (de) * 2010-10-21 2012-04-26 Ald Vacuum Technologies Gmbh Vorrichtung und Verfahren zur Ausfilterung von Versorgungsnetzstörungen aus einem Elektrodensignal in einem metallurgischen Elektroumschmelzverfahren
US20120314728A1 (en) * 2011-06-08 2012-12-13 Warner Power Llc System and method to deliver and control power to an arc furnace
DE102012217232A1 (de) * 2012-09-25 2014-03-27 Siemens Aktiengesellschaft Flickerreduktion bei Elektrolichtbogenöfen durch Flickervorhersage aus der Zustandsbestimmung in der Anfangsphase des Schmelzprozesses
CN103024959B (zh) * 2012-12-03 2014-09-17 北京金自天正智能控制股份有限公司 一种电极智能调节器及电极智能控制方法
US9013539B1 (en) * 2013-08-30 2015-04-21 Google Inc. Video conferencing system and method
DE102014206008A1 (de) * 2014-03-31 2015-10-01 Siemens Aktiengesellschaft Vorrichtung und Verfahren zur dynamischen Einstellung eines Elektrolichtbogenofens
ITUB20152674A1 (it) 2015-07-30 2017-01-30 Danieli Automation Spa Apparato e metodo di alimentazione elettrica di un forno elettrico ad arco
WO2017085330A1 (de) * 2015-11-19 2017-05-26 Sms Group Gmbh Energieversorgungssystem für einen elektroofen
IT201800004847A1 (it) * 2018-04-24 2019-10-24 Metodo di fusione in un forno elettrico ad arco e relativo apparato
IT201800004846A1 (it) * 2018-04-24 2019-10-24 Metodo di alimentazione elettrica di un forno elettrico ad arco e relativo apparato

Family Cites Families (13)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3186043A (en) * 1963-04-02 1965-06-01 Allegheny Ludlum Steel Metallurgical furnace control
SU600748A1 (ru) * 1974-09-30 1978-03-30 Предприятие П/Я Г-4696 Способ регулировани мощности дуговой электропечи и устройство дл его осуществлени
DE2948787C2 (de) * 1979-12-04 1984-05-03 Siemens AG, 1000 Berlin und 8000 München Anordnung zur Elektrodenregelung eines Lichtbogenofens
DE3000996A1 (de) * 1980-01-12 1981-07-23 Mannesmann AG, 4000 Düsseldorf Verfahren zum betrieb eines lichtbogenofens
DE3125661A1 (de) * 1981-06-30 1983-01-13 Mannesmann AG, 4000 Düsseldorf "verfahren zum betrieb eines lichtbogenofens"
SE452840B (sv) * 1983-10-31 1987-12-14 Asea Ab Reglersystem for likstroms-ljusbagsugnar
DE3508323A1 (de) * 1984-03-09 1985-09-12 Licentia Patent-Verwaltungs-Gmbh, 6000 Frankfurt Einrichtung zur speisung einer oder mehrerer elektroden eines ein- oder mehrphasigen elektrothermischen ofens
US4677643A (en) * 1984-03-09 1987-06-30 Licentia Patent-Verwaltungs-Gmbh Device for feeding one or a plurality of electrodes in an electrothermal furnace
DE3512189C2 (de) * 1985-04-03 1996-09-05 Mannesmann Ag Verfahren und Vorrichtung zur Regelung von Lichtbogenöfen
DE3512177C2 (de) * 1985-04-03 1997-01-16 Mannesmann Ag Verfahren zur Symmetrierung elektrischer Größen in Drehstrom-Lichtbogenöfen und Vorrichtung zur Durchführung des Verfahrens
US5155740A (en) * 1990-10-22 1992-10-13 Nkk Corporation Flicker compensating apparatus for DC arc furnace
DE69022854T2 (de) * 1990-10-31 1996-05-02 Nippon Kokan Kk Einrichtung zur Flimmerkompensation für einen Gleichstromlichtbogenofen.
AU647576B2 (en) * 1991-02-08 1994-03-24 Asea Brown Boveri Limited Process for electrode control of a DC arc furnace, and an electrode control device

Also Published As

Publication number Publication date
US5438588A (en) 1995-08-01
DE4309640A1 (de) 1994-09-29
ITMI940504A1 (it) 1995-09-18
ITMI940504A0 (it) 1994-03-18
JPH06325867A (ja) 1994-11-25

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Legal Events

Date Code Title Description
0001 Granted
TA Fee payment date (situation as of event date), data collected since 19931001

Effective date: 19970228