EP0167475B1 - Gleichstrom-Lichtbogen-Heizvorrichtung - Google Patents

Gleichstrom-Lichtbogen-Heizvorrichtung Download PDF

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Publication number
EP0167475B1
EP0167475B1 EP85730024A EP85730024A EP0167475B1 EP 0167475 B1 EP0167475 B1 EP 0167475B1 EP 85730024 A EP85730024 A EP 85730024A EP 85730024 A EP85730024 A EP 85730024A EP 0167475 B1 EP0167475 B1 EP 0167475B1
Authority
EP
European Patent Office
Prior art keywords
heating device
electrode
metal electrode
vessel
adjustable
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
EP85730024A
Other languages
German (de)
English (en)
French (fr)
Other versions
EP0167475A1 (de
Inventor
Friedrich Dr. Ing. Nordmeyer
Eckard Schunk
Frank Winter
C. L. Jackson
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.)
Vodafone GmbH
Original Assignee
Mannesmann 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 Mannesmann AG filed Critical Mannesmann AG
Publication of EP0167475A1 publication Critical patent/EP0167475A1/de
Application granted granted Critical
Publication of EP0167475B1 publication Critical patent/EP0167475B1/de
Expired legal-status Critical Current

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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
    • H05B7/06—Electrodes
    • 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

Definitions

  • the invention relates to a heating device according to the preamble of claim 1, as known from DE-A-2 355 168.
  • a graphite electrode is usually connected as the cathode, while the contact electrodes work as anodes, such as. B. from DE-A-2 355 168 or from FR-A-2 197 988 known.
  • a ladle furnace for direct current which has an arc electrode working as a cathode.
  • Contact blocks made of a metal are provided in the region of the pan vessel near the bottom.
  • the contact blocks are provided with refractory stones with conductive inserts on the side facing the middle of the pan axis.
  • This device with laterally connected contact electrodes should achieve the advantage that the floor remains free for floor tapping holes.
  • this device has the disadvantage that the renewal work is very difficult and expensive when the contact blocks which are firmly connected to the vessel are used or damaged.
  • the object of the invention is to provide a direct-current arc heating device of the type mentioned, the contact electrodes of which can be moved in the vertical and horizontal directions, so that the repair or renewal work on the electrodes can be carried out much more easily than hitherto.
  • the invention is intended to enable the electrodes to be used for different interchangeable vessels.
  • the contact electrode and the graph i teiek- trode can be easily inserted and removed from the vessel for another exchange vessel. The process of the metallurgical process can thus be accelerated without increasing costs.
  • the greatest thermal stress on the contact electrode arises at its contact surfaces with the liquid weld pool.
  • the electrode according to the invention can therefore be provided with thermal protection in its lower region which is in contact with the slag.
  • the radiation exposure of the refractory material is significantly reduced by the arrangement of the electrodes according to the invention. Operating costs are reduced due to smaller electrode consumption.
  • the device is also suitable for vacuum processes and processes with protective gas cover.
  • the graphite electrode 2 is clamped in a repositioning device 5, while the tracking device for the contact electrode 3 is designated 6.
  • the z. B. from DE-PS-2 125 773 are known, it is common designs.
  • the support arm 4 is firmly connected to a position-controlled guide column 7 and thus, together with both electrodes, can be adjusted in height by means of the hydraulic cylinder 8.
  • both electrodes can be raised and removed from the vessel.
  • the graphite electrode 2 is controlled so that the arc is maintained.
  • the contact electrode 3 is immersed in the melt 10.
  • the tracking device 6 ensures that sufficient contact with the melt 10 is ensured.
  • the slag layer is designated by 11.
  • the contact electrode 3 has axial bores 12 which permit intensive cooling (for example by cooling gases, such as argon) of the electrode.
  • the heater can be operated both stationary and on a ladle trolley.

Landscapes

  • Physics & Mathematics (AREA)
  • Engineering & Computer Science (AREA)
  • Plasma & Fusion (AREA)
  • Furnace Details (AREA)
  • Vertical, Hearth, Or Arc Furnaces (AREA)
  • Discharge Heating (AREA)
  • Refinement Of Pig-Iron, Manufacture Of Cast Iron, And Steel Manufacture Other Than In Revolving Furnaces (AREA)
EP85730024A 1984-05-24 1985-02-18 Gleichstrom-Lichtbogen-Heizvorrichtung Expired EP0167475B1 (de)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE19843419681 DE3419681A1 (de) 1984-05-24 1984-05-24 Gleichstrom-lichtbogen-heizvorrichtung
DE3419681 1984-05-24

Publications (2)

Publication Number Publication Date
EP0167475A1 EP0167475A1 (de) 1986-01-08
EP0167475B1 true EP0167475B1 (de) 1989-12-27

Family

ID=6236920

Family Applications (1)

Application Number Title Priority Date Filing Date
EP85730024A Expired EP0167475B1 (de) 1984-05-24 1985-02-18 Gleichstrom-Lichtbogen-Heizvorrichtung

Country Status (7)

Country Link
US (1) US4646318A (da)
EP (1) EP0167475B1 (da)
JP (1) JPS60254592A (da)
BR (1) BR8502426A (da)
DE (2) DE3419681A1 (da)
DK (1) DK163402C (da)
ES (1) ES295801Y (da)

Families Citing this family (8)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4964114A (en) * 1986-11-26 1990-10-16 Mannesmann Ag Electrode positioning mechanism
DE3808683C1 (da) * 1988-03-11 1989-09-07 Mannesmann Ag, 4000 Duesseldorf, De
JP2794774B2 (ja) * 1989-05-09 1998-09-10 大同特殊鋼株式会社 直流アーク炉の操業方法
DE4108583C2 (de) * 1991-03-14 1997-06-05 Mannesmann Ag Vorrichtung zum Kuppeln der Stromzuführung zu einem metallurgischen Gefäß
US5539768A (en) * 1995-03-21 1996-07-23 Ltv Steel Company, Inc. Electric arc furnace electrode consumption analyzer
CA2781898C (en) * 2009-11-25 2016-07-05 Fundacion Inasmet Inoculation process and device
JPWO2011096170A1 (ja) * 2010-02-08 2013-06-10 株式会社大紀アルミニウム工業所 アルミニウムの精製方法及びその装置
CN114477736B (zh) * 2022-03-25 2023-10-10 锦州佑鑫石英科技有限公司 一种高品质石英坩埚的制作方法

Citations (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE3107454A1 (de) * 1980-03-10 1982-01-28 ASEA AB, 72183 Västerås "anordnung an pfannen oder pfannenoefen fuer gleichstrom"
EP0157104A1 (de) * 1984-02-24 1985-10-09 C. CONRADTY NÜRNBERG GmbH & Co. KG Verfahren und Vorrichtung zum Schmelzen und Erhitzen von Werkstoffen

Family Cites Families (13)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR846004A (da) * 1939-09-07
US1333950A (en) * 1916-03-24 1920-03-16 Ludlum Electric Furnace Corp Electric furnace
US3612740A (en) * 1968-01-08 1971-10-12 Huta Zabrze Arrangement for production of metal alloys steel alloys in particular
US3612739A (en) * 1970-02-05 1971-10-12 Simon M Korneff Dual electric furnace facility
US3709997A (en) * 1970-12-20 1973-01-09 J Alferov Convertible electrode electric furnace installation and method
DE2125773C3 (de) * 1971-05-25 1979-12-20 Demag Ag, 4100 Duisburg Elektroden-Tieffassung für Lichtbogen- bzw. Reduktionsöfen
SE376634C (sv) * 1972-05-02 1985-10-28 Nipkti Cherna Metalurgia Sett att framstella stal medelst likstrom och ugn for genomforande av settet
BG17932A1 (da) * 1972-08-29 1974-03-05
SE378735B (da) * 1972-11-17 1975-09-08 Asea Ab
SE382828B (sv) * 1974-06-24 1976-02-16 Asea Ab Sett att framstella stal i likstromsljusbagsugn samt likstromsljusbagsugn for genomforande av settet
GB1504443A (en) * 1975-04-25 1978-03-22 Dso Cherna Metalurgia Method of steelmaking with direct current
US4132545A (en) * 1975-12-08 1979-01-02 Rabinovich Volf I Method of electroslag remelting processes using a preheated electrode shield
BG35678A1 (en) * 1981-12-01 1984-06-15 Savov Method and device for treating and refining liquid alloys

Patent Citations (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE3107454A1 (de) * 1980-03-10 1982-01-28 ASEA AB, 72183 Västerås "anordnung an pfannen oder pfannenoefen fuer gleichstrom"
EP0157104A1 (de) * 1984-02-24 1985-10-09 C. CONRADTY NÜRNBERG GmbH & Co. KG Verfahren und Vorrichtung zum Schmelzen und Erhitzen von Werkstoffen

Also Published As

Publication number Publication date
DK163402C (da) 1992-07-13
DK229585A (da) 1985-11-25
DK163402B (da) 1992-02-24
DK229585D0 (da) 1985-05-23
US4646318A (en) 1987-02-24
BR8502426A (pt) 1986-01-28
JPH0123916B2 (da) 1989-05-09
JPS60254592A (ja) 1985-12-16
DE3419681C2 (da) 1989-09-28
DE3575065D1 (de) 1990-02-01
EP0167475A1 (de) 1986-01-08
ES295801U (es) 1987-06-16
DE3419681A1 (de) 1985-11-28
ES295801Y (es) 1987-12-16

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