EP0344092B1 - Einrichtung zur thermischen Behandlung von metallischem Schmelzgut - Google Patents

Einrichtung zur thermischen Behandlung von metallischem Schmelzgut Download PDF

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Publication number
EP0344092B1
EP0344092B1 EP89730089A EP89730089A EP0344092B1 EP 0344092 B1 EP0344092 B1 EP 0344092B1 EP 89730089 A EP89730089 A EP 89730089A EP 89730089 A EP89730089 A EP 89730089A EP 0344092 B1 EP0344092 B1 EP 0344092B1
Authority
EP
European Patent Office
Prior art keywords
counter
metallurgical vessel
electrode
contact
contact surface
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
EP89730089A
Other languages
German (de)
English (en)
French (fr)
Other versions
EP0344092A2 (de
EP0344092A3 (de
Inventor
Eckart Schunk
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 EP0344092A2 publication Critical patent/EP0344092A2/de
Publication of EP0344092A3 publication Critical patent/EP0344092A3/de
Application granted granted Critical
Publication of EP0344092B1 publication Critical patent/EP0344092B1/de
Anticipated expiration legal-status Critical
Expired - Lifetime legal-status Critical Current

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Classifications

    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F27—FURNACES; KILNS; OVENS; RETORTS
    • F27D—DETAILS OR ACCESSORIES OF FURNACES, KILNS, OVENS, OR RETORTS, IN SO FAR AS THEY ARE OF KINDS OCCURRING IN MORE THAN ONE KIND OF FURNACE
    • F27D11/00—Arrangement of elements for electric heating in or on furnaces
    • F27D11/08—Heating by electric discharge, e.g. arc discharge
    • F27D11/10—Disposition of 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
    • H05B7/06—Electrodes
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B22—CASTING; POWDER METALLURGY
    • B22D—CASTING OF METALS; CASTING OF OTHER SUBSTANCES BY THE SAME PROCESSES OR DEVICES
    • B22D1/00—Treatment of fused masses in the ladle or the supply runners before casting
    • 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
    • C21C7/00—Treating molten ferrous alloys, e.g. steel, not covered by groups C21C1/00 - C21C5/00
    • C21C7/0075—Treating in a ladle furnace, e.g. up-/reheating of molten steel within the ladle

Definitions

  • the invention relates to a device for the thermal treatment of molten metal.
  • the work for attaching or detaching the contact electrode is thus disadvantageous in that it is necessary for the personnel to act under the difficult ergonomic conditions. Similar conditions result from the formation of the electrode according to EP-A1-02 35 465.
  • the invention has for its object to provide a maintenance-free, easily replaceable device that enables an automatic and safe connection of the counter electrode to the power supply to the energy source.
  • the device according to the invention it is achieved that when the metallurgical vessels such as pans or distributors are set down in the respective treatment station, the electrical contact with the base electrode is made without the operating personnel becoming irritated.
  • the treatment stands which may a.
  • Contact areas connected to the energy source are provided in a vacuum device, on a revolving tower or on the ironworks site accessible from an ironworks vehicle. In their vertical and horizontal arrangement in the treatment stand, these surfaces are matched to the contact surfaces of current supply elements for the bottom electrode attached to the vessels.
  • the vessel feet or vessel support elements, such as hanging loops or claws, as well as the distance to a housing wall, can be considered as a reference dimension.
  • the contact surfaces are arranged in the vicinity of the bottom of the metallurgical vessel.
  • a large possible use of the vessels is achieved by attaching the transmission elements to the outer shell of the metallurgical vessel, since the matching support elements are provided at the various treatment stations, such as a rotating tower or vacuum system, and the possibility of attachment there is easier to ensure.
  • the contact areas have a size that ensures safe transmission of the energy.
  • Several contacts can be attached to the circumference of the vessels.
  • the contact material is graphite, which is mechanically wear-resistant, pressure and temperature resistant and has the ability to transmit electrical energy with little loss.
  • the contact elements are designed to be easily exchangeable in a maintenance-friendly manner.
  • the support surface of at least one of the elements for transmitting the energy is advantageously divided into segments. A maximum clinging effect of the outer surfaces is achieved if the segments are formed from individual graphite bodies that can compensate for slight changes in path in the pressing direction.
  • the counter element is pocket-shaped and is filled with graphite powder. This ensures that there is close contact between the contacting surfaces even in the event of unevenness.
  • an essentially vertical or horizontal compensation is provided according to the invention.
  • the components connected to the energy source are mounted on springs or they are movably connected in their longitudinal axis to a pressure accumulator unit. This measure ensures a constant contact pressure, which can also be regulated if necessary.
  • the contact surface can be tilted to the vertical or horizontal plane.
  • FIG. 1 shows a treatment station 50 with a housing 51, in which a metallurgical vessel 10 is located on a metallurgical vehicle 52.
  • the electrical current is supplied from an electrical energy source 20 via current supply lines 23 to the electrode 21 and to the counter electrodes 22.
  • the counter electrodes 22 are predominantly arranged in the region of the bottom 13 of the metallurgical vessel 10.
  • the vessel 10 consists of an outer shell 11 with the carrying device 14 and a refractory lining 12.
  • elements 30 for transmitting the electrical energy are arranged by means of a console.
  • a counter-element 40 is provided for each element 30 and can be moved against the element 30 by means of compensating elements 45.
  • the compensating element 45 is formed in the right part of the picture as a spring 46, in the left part of the picture as a piston-cylinder unit 47 with a pressure accumulator 48.
  • the metallurgical vessel 10 is supported on the floor either by the support ring 18 or by the foot 19.
  • FIG. 2 shows the counter element 40, consisting of the component for energy transmission 42 and a tab with the joint 44.
  • the supporting element 43 which is connected to the compensating element 45, here the piston-cylinder unit 47, engages on this joint 44.
  • the component 42 consists of the segments 49, in the present case of cylindrical graphite bodies with the surface 41.
  • the segments 49 are designed to be displaceable in the pressing direction.
  • FIG. 3 shows the elements 30 for the transmission of the electrical energy.
  • the component for energy transmission 32 is designed here as a plate which is attached to the outer shell 11 of the metallurgical vessel 10 via the bracket 33.
  • the plate 32 has a support surface 31.
  • the surface 41 of the counter element 40 bears against the support surface 31.
  • This surface 41 is formed from powdered graphite 70, which is arranged in the component for energy transmission 42, which has a tab with the joint 44.
  • the support element 43 which is connected to a metallurgical vehicle 52, a ladle turret 53 or a distribution channel 54, acts on the joint 44.
  • a spring 46 is provided coaxially to the support element 43, by means of which the component 42 can be moved in the direction of the element 30, so that the surfaces 31 and 41 touch.
  • FIG. 4 shows a detail of the metallurgical vessel 10 with the outer shell 11 and the refractory lining 12.
  • the bracket 33 is fastened to the outer shell 11. Through the console, the outer shell and the A refractory lining is provided through which the counter electrode 22 is guided.
  • the component 32 of the element 30 for the transmission of the electrical energy is separated by the electrical insulation 60.
  • the counter element 40 not shown, will lean with the surface 41 against the surface 31 of the component for energy transmission 32.

Landscapes

  • Engineering & Computer Science (AREA)
  • Chemical & Material Sciences (AREA)
  • Mechanical Engineering (AREA)
  • Materials Engineering (AREA)
  • Metallurgy (AREA)
  • Organic Chemistry (AREA)
  • Physics & Mathematics (AREA)
  • Plasma & Fusion (AREA)
  • General Engineering & Computer Science (AREA)
  • Furnace Details (AREA)
  • Discharge Heating (AREA)
  • Manufacture And Refinement Of Metals (AREA)
  • Casting Support Devices, Ladles, And Melt Control Thereby (AREA)
  • Vertical, Hearth, Or Arc Furnaces (AREA)
  • Control Of Resistance Heating (AREA)
  • Tunnel Furnaces (AREA)
EP89730089A 1988-05-18 1989-04-03 Einrichtung zur thermischen Behandlung von metallischem Schmelzgut Expired - Lifetime EP0344092B1 (de)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE3817379A DE3817379C1 (es) 1988-05-18 1988-05-18
DE3817379 1988-05-18

Publications (3)

Publication Number Publication Date
EP0344092A2 EP0344092A2 (de) 1989-11-29
EP0344092A3 EP0344092A3 (de) 1991-01-23
EP0344092B1 true EP0344092B1 (de) 1994-06-01

Family

ID=6354870

Family Applications (1)

Application Number Title Priority Date Filing Date
EP89730089A Expired - Lifetime EP0344092B1 (de) 1988-05-18 1989-04-03 Einrichtung zur thermischen Behandlung von metallischem Schmelzgut

Country Status (8)

Country Link
US (1) US4958358A (es)
EP (1) EP0344092B1 (es)
JP (1) JP2832539B2 (es)
KR (1) KR970008502B1 (es)
AT (1) ATE106652T1 (es)
CA (1) CA1316972C (es)
DE (2) DE3817379C1 (es)
ES (1) ES2054080T3 (es)

Families Citing this family (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE4108583C2 (de) * 1991-03-14 1997-06-05 Mannesmann Ag Vorrichtung zum Kuppeln der Stromzuführung zu einem metallurgischen Gefäß
US7537596B2 (en) * 2003-06-20 2009-05-26 Acumed Llc Bone plates with intraoperatively tapped apertures
CN101323892B (zh) * 2008-07-31 2010-06-09 东北大学 一种底阳极侧导电直流钢包炉
CN103394657B (zh) * 2013-08-15 2015-05-13 王立臣 一种带有热辐射加热器的溜槽及其使用方法

Family Cites Families (9)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US1645091A (en) * 1927-10-11 Electric furnace
US3409725A (en) * 1965-04-20 1968-11-05 Penberthy Harvey Larry Furnace electrode assembly
JPS5012062U (es) * 1973-06-05 1975-02-07
SE435548B (sv) * 1980-03-10 1984-10-01 Asea Ab Anordning vid skenkar eller skenkugnar for likstrom med minst en ljusbagselektrod
JPS6186271A (ja) * 1984-10-03 1986-05-01 Mitsubishi Electric Corp サ−マルヘツド
FR2577311B1 (fr) * 1985-02-11 1987-03-06 Siderurgie Fse Inst Rech Dispositif de connexion electrique destine a etre place en paroi d'un four metallurgique a courant continu.
DE3535690A1 (de) * 1985-10-05 1987-04-09 Gutehoffnungshuette Man Kontaktelektrodenanordnung fuer gleichstrom-lichtbogen- oder widerstands-schmelzofen
DE3701678A1 (de) * 1987-01-22 1988-08-04 Gutehoffnungshuette Man Metallurgisches gefaess, insbesondere elektroofen mit einer oder mehreren bodenelektroden
JPH0230121Y2 (es) * 1986-03-04 1990-08-14

Also Published As

Publication number Publication date
EP0344092A2 (de) 1989-11-29
DE58907738D1 (de) 1994-07-07
US4958358A (en) 1990-09-18
ATE106652T1 (de) 1994-06-15
ES2054080T3 (es) 1994-08-01
KR970008502B1 (ko) 1997-05-24
EP0344092A3 (de) 1991-01-23
KR890017018A (ko) 1989-12-14
CA1316972C (en) 1993-04-27
JP2832539B2 (ja) 1998-12-09
JPH0219429A (ja) 1990-01-23
DE3817379C1 (es) 1989-06-22

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