EP0594272B2 - Elektrodentragarm für Lichtbogenofen - Google Patents

Elektrodentragarm für Lichtbogenofen Download PDF

Info

Publication number
EP0594272B2
EP0594272B2 EP93250271A EP93250271A EP0594272B2 EP 0594272 B2 EP0594272 B2 EP 0594272B2 EP 93250271 A EP93250271 A EP 93250271A EP 93250271 A EP93250271 A EP 93250271A EP 0594272 B2 EP0594272 B2 EP 0594272B2
Authority
EP
European Patent Office
Prior art keywords
supporting arm
electrode
electrode supporting
channels
walls
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 - Lifetime
Application number
EP93250271A
Other languages
German (de)
English (en)
French (fr)
Other versions
EP0594272B1 (de
EP0594272A1 (de
Inventor
Lutz Becker
Andreas Schüring
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.)
SMS Siemag AG
Original Assignee
SMS Demag 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
Family has litigation
First worldwide family litigation filed litigation Critical https://patents.darts-ip.com/?family=6471405&utm_source=google_patent&utm_medium=platform_link&utm_campaign=public_patent_search&patent=EP0594272(B2) "Global patent litigation dataset” by Darts-ip is licensed under a Creative Commons Attribution 4.0 International License.
Application filed by SMS Demag AG filed Critical SMS Demag AG
Publication of EP0594272A1 publication Critical patent/EP0594272A1/de
Publication of EP0594272B1 publication Critical patent/EP0594272B1/de
Application granted granted Critical
Publication of EP0594272B2 publication Critical patent/EP0594272B2/de
Anticipated expiration legal-status Critical
Expired - Lifetime legal-status Critical Current

Links

Images

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
    • H05B7/10—Mountings, supports, terminals or arrangements for feeding or guiding electrodes

Definitions

  • the invention relates to an electrode support arm for Electric arc furnaces for attaching an electrode support device in his front part, with at least one partially made of high conductivity conductive material formed wall designed as a hollow profile is.
  • Electrodes for electric arc furnaces for steel production are usually on by means of electrode terminals Supporting arms attached, in turn, to vertically movable Support pillars are held.
  • the power supply happens either guided in above the support arm Electricity pipes or over the support arms themselves.
  • the electricity is generated by support arms made of steel with externally plated copper or aluminum guided.
  • the arm can also be complete consist of a good leading the current material.
  • EP 0 340 725 is a made of light metal Support arm known through its cavity Coolant flows.
  • Coolant flows For the cooling water supply of the tension bracket pipes are provided, the connected to the clamp with hoses are.
  • the invention has therefore set itself the goal, the avoid mentioned disadvantages and a structural simple, low-weight and structurally stiff Support arm to create, with the low maintenance high electrical Services are transferable.
  • the thickness of the wall is chosen so that the Hollow profile trained support arm is sufficiently rigid and at the same time the entire wall is free of danger is cooled.
  • the hollow profile can be a circular, a oval or a box-like shape.
  • Prefers becomes the box-like shape, with the wall from two equal-sized L-profiles or four at the Corners welded together flat profiles.
  • the support arm according to the invention is significantly lighter as previously known support arms comparable Sizes. This is due to the one by the use of Channeled wall, so that at comparatively Strengthen the weight of the arm less is. On the other hand, there is less overall Water is used because significantly less water targeted through the channels by the as closed Coolant circuit designed support arm out becomes.
  • the support arm according to the invention has an outer simple form, with no components to the outside protrude and thus exposed to possible damage are.
  • the simple shape allows easy attachment the electrode support device in the front part of the Support arm. This ensures a simple change.
  • FIG. 1 shows an electric arc furnace (10), with a furnace vessel (11), with a lid (12) is closed. In the furnace vessel (11) is located Melt (13) and slag (14).
  • Electrode carrying device (20) Through the lid (12) protrude electrodes (21-23) in the furnace vessel (11) into it, on an electrode arm (24) or on individual electrode arms (25-27) one Electrode carrying device (20) are attached.
  • the middle electrode support arm When using three electrode support arms (25-27) the middle electrode support arm has a bend (28), with horizontal electrode support parts (29) is intimately connected.
  • the length of the middle electrode support arm (25) is labeled “L”.
  • This length "L” has a kink length "l” in the middle area on, with this part of the electrode support arm in a Abknickwinkel ( ⁇ ) to the horizontal electrode support member (29) is arranged.
  • FIG. 2 shows hollow profiles (30) of the electrode support arm with components (31). These components (31) are extruded and have longitudinal channels (36) designed in number and size are that sufficient cooling without reduction the strength of the support arm is reached.
  • the hollow profile of mind two extruded components by welding together. These components can do this as oval profile (34) ⁇ Figure 2.3> or as L-profile (33) ⁇ Figure 2.2> be configured. But you can also, like shown in Figure 2.1, from identical flat profiles (32) joined at 4 seams be welded together.
  • FIG. 3 shows individual flow filaments of the coolant a coolant control system (40) shown.
  • the individual channels (36) form the coolant thread (46), which flows through most of the support arm.
  • the electrode holder (27) has the coolant threads (47 and 48), that of the coolant filaments (49). Leave through the multitude of channels represent a variety of coolant ducts.
  • a splash ring (41) is shown, from which the water can flow freely, the via the coolant thread (42) is supplied to it.

Landscapes

  • Physics & Mathematics (AREA)
  • Engineering & Computer Science (AREA)
  • Plasma & Fusion (AREA)
  • Discharge Heating (AREA)
  • Furnace Details (AREA)
  • Vertical, Hearth, Or Arc Furnaces (AREA)
EP93250271A 1992-10-20 1993-10-06 Elektrodentragarm für Lichtbogenofen Expired - Lifetime EP0594272B2 (de)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE4236158A DE4236158C1 (de) 1992-10-20 1992-10-20 Elektrodentragarm für Lichtbogenöfen
DE4236158 1992-10-20

Publications (3)

Publication Number Publication Date
EP0594272A1 EP0594272A1 (de) 1994-04-27
EP0594272B1 EP0594272B1 (de) 1997-09-03
EP0594272B2 true EP0594272B2 (de) 2005-06-22

Family

ID=6471405

Family Applications (1)

Application Number Title Priority Date Filing Date
EP93250271A Expired - Lifetime EP0594272B2 (de) 1992-10-20 1993-10-06 Elektrodentragarm für Lichtbogenofen

Country Status (10)

Country Link
US (1) US5471496A (es)
EP (1) EP0594272B2 (es)
JP (1) JP3300720B2 (es)
KR (1) KR100259014B1 (es)
AT (1) ATE157839T1 (es)
BR (1) BR9301181A (es)
DE (2) DE4236158C1 (es)
ES (1) ES2106269T3 (es)
GB (1) GB2271836B (es)
SG (1) SG52327A1 (es)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE102006027648A1 (de) * 2006-06-13 2007-12-20 Arndt Dung Wandungselemente für einen wassergekühlten, stromführenden Elektrodentragarm und aus solchen Wandungselementen bestehende Elektrodentragarme

Families Citing this family (10)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB2324595B (en) * 1997-04-22 1999-03-10 Howard Ind Pipework Services L Economiser for electric arc furnace
US6377604B1 (en) * 2000-11-09 2002-04-23 Dixie Arc, Inc. Current-conducting arm for an electric arc furnace
EP1901585B1 (de) * 2006-09-18 2012-08-29 Homa Gesellschaft f. Hochstrom- Magnetschalter v. Vollenbroich GmbH & Co. KG Elektrodenarm für Lichtbogenöfen
US20090044568A1 (en) * 2007-08-15 2009-02-19 Albert Lewis Submerged fired vertical furnance
JP4533986B2 (ja) * 2008-09-17 2010-09-01 有限会社 ベイテック 電極支持アームにおける冷却構造
DE102009034407A1 (de) 2009-07-23 2011-02-03 Fuchs Technology Holding Ag Elektrodentragarm mit lokal befestigtem Stromleiter
CN101873733B (zh) * 2010-02-05 2011-12-07 姚会元 矿热炉用导电铜颚板
DE102010052086A1 (de) 2010-03-10 2011-09-15 Sms Siemag Ag Elektrodentragarmsystem
US10570045B2 (en) 2015-05-22 2020-02-25 John Hart Miller Glass and other material melting systems
DE102016206028A1 (de) 2016-04-12 2017-10-12 Sms Group Gmbh Tragarm zum Tragen einer Elektrode eines Lichtbogenofens und Verfahren zum Herstellen eines solchen

Family Cites Families (15)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB631530A (en) * 1946-01-31 1949-11-04 Delaware Engineering Corp Electric arc furnace with lift and swing aside roof
FR1336823A (fr) * 1962-07-25 1963-09-06 Aluminum Francais L Bras en alliage léger pour four électrique
US3602624A (en) * 1970-03-11 1971-08-31 Dixie Bronze Co Unitized electrode holder for electric furnace electrodes or the like
US3686421A (en) * 1971-08-30 1972-08-22 Edgar Wunsche Unitized electride holder and arm for electric arc furnace electrodes or the like
US4122295A (en) * 1976-01-17 1978-10-24 Ishikawajima-Harima Jukogyo Kabushiki Kaisha Furnace wall structure capable of tolerating high heat load for use in electric arc furnace
US4110548A (en) * 1976-12-29 1978-08-29 Bethlehem Steel Corporation Water-cooled electrode holder
US4306726A (en) * 1980-04-22 1981-12-22 Qit-Fer Et Titane Inc. Furnace electrode seal assembly
US4342878A (en) * 1980-05-09 1982-08-03 Wilson Welding Company, Inc. Water-cooled electrode holder
EP0061612B1 (de) * 1981-03-24 1985-08-07 Fried. Krupp Gesellschaft mit beschränkter Haftung Hochstromleitungssystem für Elektroöfen
FR2517502A1 (fr) * 1981-12-01 1983-06-03 Clesid Sa Dispositif d'alimentation et de support d'electrodes pour four a arcs
EP0167485A1 (en) * 1984-06-25 1986-01-08 Arc Technologies Systems, Ltd. Assembly for the automatic cooling water connection to water cooled combination electrodes for electric arc furnaces
US4682341A (en) * 1984-11-29 1987-07-21 Fuchs Systemtechnik Gmbh Electric arc furnace
DE3522559C1 (de) * 1985-06-24 1987-01-22 Fuchs Systemtechnik Gmbh Lichtbogenofen
DE8805807U1 (de) * 1988-05-02 1989-08-31 Badische Stahl-Engineering GmbH, 7640 Kehl Tragarm für eine Elektrode eines Lichtbogenofens
US5283803A (en) * 1992-06-01 1994-02-01 Glass Incorporated International Electrode assembly for glass melting furnace

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE102006027648A1 (de) * 2006-06-13 2007-12-20 Arndt Dung Wandungselemente für einen wassergekühlten, stromführenden Elektrodentragarm und aus solchen Wandungselementen bestehende Elektrodentragarme

Also Published As

Publication number Publication date
GB9302625D0 (en) 1993-03-24
EP0594272B1 (de) 1997-09-03
US5471496A (en) 1995-11-28
JP3300720B2 (ja) 2002-07-08
DE4236158C1 (de) 1994-03-17
EP0594272A1 (de) 1994-04-27
KR940010857A (ko) 1994-05-26
GB2271836A (en) 1994-04-27
ATE157839T1 (de) 1997-09-15
BR9301181A (pt) 1994-11-01
KR100259014B1 (ko) 2000-06-15
JPH06223963A (ja) 1994-08-12
DE59307254D1 (de) 1997-10-09
GB2271836B (en) 1996-03-27
SG52327A1 (en) 1998-09-28
ES2106269T3 (es) 1997-11-01

Similar Documents

Publication Publication Date Title
EP0594272B2 (de) Elektrodentragarm für Lichtbogenofen
DE2726623B2 (de) Elektromagnetische Einrichtung zum Umrühren einer Metallschmelze
DE837579C (de) Verfahren und Vorrichtung zur Erzeugung von Druecken in Metallschmelzen, insbesondere zum Pumpen von Metallschmelzen
DE1565406C3 (de) Dreiphasiger Lichtbogenofen
DE4429340C2 (de) Tiegel zum induktiven Schmelzen oder Überhitzen von Metallen, Legierungen oder anderen elektrisch leitfähigen Werkstoffen
DE9216411U1 (de) Elektrodentragarm für Lichtbogenöfen
DE4036282A1 (de) Schmelzvorrichtung
DE2924116A1 (de) Vorrichtung zum veraendern eines fluessigmetallstromes in einen kanal
DE1515246B2 (de) Mit mehreren Lichtbogen arbeitende Schweißvorrichtung
DE4223109C1 (es)
CH639750A5 (de) Induktionsrinnenofen.
DE939692C (de) Verfahren und Vorrichtung zur Warmbehandlung von Stahldraht oder -band
DE1147714B (de) Vorrichtung und Verfahren zur Halterung und zum Transport elektrisch leitender, freischwebender Substanzen
DE2603564C3 (de) Elektrodenhalter fur elektrische hüttenmännische Elektrodenbfen
DE2321447B2 (de) Anlage zum elektroschlacke-umschmelzen
DE2525935B2 (de) Nichtabschmelzende Elektrode für einen Lichtbogenofen
AT409058B (de) Dreiphasiger lichtbogenofen
DE2402380C2 (de) Induktoreinheit
CH627672A5 (en) Apparatus for the continuous or discontinuous casting of metal
DE4042469C2 (de) Vorrichtung zum Erhitzen von geschmolzenem Metall in einer Gießpfanne
CH216538A (de) Verfahren zur Regelung der Temperatur von beheizten Salzschmelzen, welchen der elektrische Strom mittels Elektroden zugeführt wird.
DE2019442A1 (de) Wassergekuehlter Schutzgas-Schweissbrenner fuer die Lichtbogenschweissung mit unendlicher Elektrode
EP0080525A1 (de) Verbesserter elektrisch beheizter Speiser
DE2232695A1 (de) Gehaeuse fuer elektrodenoefen mit kokille
CH508726A (de) Transportsäule in Anlagen zum Elektroschlackenumschmelzen von Metallen, insbesondere von Stählen

Legal Events

Date Code Title Description
PUAI Public reference made under article 153(3) epc to a published international application that has entered the european phase

Free format text: ORIGINAL CODE: 0009012

AK Designated contracting states

Kind code of ref document: A1

Designated state(s): AT BE CH DE ES FR LI LU

17P Request for examination filed

Effective date: 19940322

GRAG Despatch of communication of intention to grant

Free format text: ORIGINAL CODE: EPIDOS AGRA

17Q First examination report despatched

Effective date: 19961209

GRAH Despatch of communication of intention to grant a patent

Free format text: ORIGINAL CODE: EPIDOS IGRA

GRAH Despatch of communication of intention to grant a patent

Free format text: ORIGINAL CODE: EPIDOS IGRA

GRAA (expected) grant

Free format text: ORIGINAL CODE: 0009210

AK Designated contracting states

Kind code of ref document: B1

Designated state(s): AT BE CH DE ES FR LI LU

REF Corresponds to:

Ref document number: 157839

Country of ref document: AT

Date of ref document: 19970915

Kind code of ref document: T

REG Reference to a national code

Ref country code: CH

Ref legal event code: NV

Representative=s name: E. BLUM & CO. PATENTANWAELTE

Ref country code: CH

Ref legal event code: EP

REF Corresponds to:

Ref document number: 59307254

Country of ref document: DE

Date of ref document: 19971009

ET Fr: translation filed
REG Reference to a national code

Ref country code: ES

Ref legal event code: FG2A

Ref document number: 2106269

Country of ref document: ES

Kind code of ref document: T3

PLBQ Unpublished change to opponent data

Free format text: ORIGINAL CODE: EPIDOS OPPO

PLBI Opposition filed

Free format text: ORIGINAL CODE: 0009260

26 Opposition filed

Opponent name: KARK MASCHINENFABRIK GMBH

Effective date: 19980602

PLBF Reply of patent proprietor to notice(s) of opposition

Free format text: ORIGINAL CODE: EPIDOS OBSO

PLBF Reply of patent proprietor to notice(s) of opposition

Free format text: ORIGINAL CODE: EPIDOS OBSO

PLBF Reply of patent proprietor to notice(s) of opposition

Free format text: ORIGINAL CODE: EPIDOS OBSO

PLAW Interlocutory decision in opposition

Free format text: ORIGINAL CODE: EPIDOS IDOP

APAC Appeal dossier modified

Free format text: ORIGINAL CODE: EPIDOS NOAPO

APAE Appeal reference modified

Free format text: ORIGINAL CODE: EPIDOS REFNO

APAC Appeal dossier modified

Free format text: ORIGINAL CODE: EPIDOS NOAPO

PGFP Annual fee paid to national office [announced via postgrant information from national office to epo]

Ref country code: CH

Payment date: 20020918

Year of fee payment: 10

PGFP Annual fee paid to national office [announced via postgrant information from national office to epo]

Ref country code: BE

Payment date: 20020926

Year of fee payment: 10

PGFP Annual fee paid to national office [announced via postgrant information from national office to epo]

Ref country code: LU

Payment date: 20020930

Year of fee payment: 10

PGFP Annual fee paid to national office [announced via postgrant information from national office to epo]

Ref country code: AT

Payment date: 20021003

Year of fee payment: 10

PGFP Annual fee paid to national office [announced via postgrant information from national office to epo]

Ref country code: FR

Payment date: 20021009

Year of fee payment: 10

PGFP Annual fee paid to national office [announced via postgrant information from national office to epo]

Ref country code: ES

Payment date: 20021017

Year of fee payment: 10

PG25 Lapsed in a contracting state [announced via postgrant information from national office to epo]

Ref country code: LU

Free format text: LAPSE BECAUSE OF NON-PAYMENT OF DUE FEES

Effective date: 20031006

Ref country code: AT

Free format text: LAPSE BECAUSE OF NON-PAYMENT OF DUE FEES

Effective date: 20031006

PG25 Lapsed in a contracting state [announced via postgrant information from national office to epo]

Ref country code: ES

Free format text: LAPSE BECAUSE OF NON-PAYMENT OF DUE FEES

Effective date: 20031007

PG25 Lapsed in a contracting state [announced via postgrant information from national office to epo]

Ref country code: LI

Free format text: LAPSE BECAUSE OF NON-PAYMENT OF DUE FEES

Effective date: 20031031

Ref country code: CH

Free format text: LAPSE BECAUSE OF NON-PAYMENT OF DUE FEES

Effective date: 20031031

Ref country code: BE

Free format text: LAPSE BECAUSE OF NON-PAYMENT OF DUE FEES

Effective date: 20031031

BERE Be: lapsed

Owner name: *MANNESMANN A.G.

Effective date: 20031031

REG Reference to a national code

Ref country code: CH

Ref legal event code: PL

PG25 Lapsed in a contracting state [announced via postgrant information from national office to epo]

Ref country code: FR

Free format text: LAPSE BECAUSE OF NON-PAYMENT OF DUE FEES

Effective date: 20040630

REG Reference to a national code

Ref country code: FR

Ref legal event code: ST

APBU Appeal procedure closed

Free format text: ORIGINAL CODE: EPIDOSNNOA9O

REG Reference to a national code

Ref country code: ES

Ref legal event code: FD2A

Effective date: 20031007

PUAH Patent maintained in amended form

Free format text: ORIGINAL CODE: 0009272

STAA Information on the status of an ep patent application or granted ep patent

Free format text: STATUS: PATENT MAINTAINED AS AMENDED

RAP2 Party data changed (patent owner data changed or rights of a patent transferred)

Owner name: SMS DEMAG AG

27A Patent maintained in amended form

Effective date: 20050622

AK Designated contracting states

Kind code of ref document: B2

Designated state(s): AT BE CH DE ES FR LI LU

REG Reference to a national code

Ref country code: ES

Ref legal event code: FD2A

Effective date: 20031007

APAH Appeal reference modified

Free format text: ORIGINAL CODE: EPIDOSCREFNO

EN Fr: translation not filed
PGFP Annual fee paid to national office [announced via postgrant information from national office to epo]

Ref country code: DE

Payment date: 20121023

Year of fee payment: 20

REG Reference to a national code

Ref country code: DE

Ref legal event code: R071

Ref document number: 59307254

Country of ref document: DE

PG25 Lapsed in a contracting state [announced via postgrant information from national office to epo]

Ref country code: DE

Free format text: LAPSE BECAUSE OF EXPIRATION OF PROTECTION

Effective date: 20131008