EP2301304A1 - Bras de support d'électrode avec conducteur de courant fixé localement - Google Patents

Bras de support d'électrode avec conducteur de courant fixé localement

Info

Publication number
EP2301304A1
EP2301304A1 EP10736632A EP10736632A EP2301304A1 EP 2301304 A1 EP2301304 A1 EP 2301304A1 EP 10736632 A EP10736632 A EP 10736632A EP 10736632 A EP10736632 A EP 10736632A EP 2301304 A1 EP2301304 A1 EP 2301304A1
Authority
EP
European Patent Office
Prior art keywords
electrode support
support arm
conductive layer
electrically conductive
longitudinal direction
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Withdrawn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
EP10736632A
Other languages
German (de)
English (en)
Inventor
Gerhard Fuchs
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.)
Fuchs Technology Holding AG
Original Assignee
Fuchs Technology Holding 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 Fuchs Technology Holding AG filed Critical Fuchs Technology Holding AG
Publication of EP2301304A1 publication Critical patent/EP2301304A1/fr
Withdrawn legal-status Critical Current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
    • H05B7/11—Arrangements for conducting current to the electrode terminals

Definitions

  • the present invention relates to an electrode support arm for a metallurgical furnace, in particular an electric arc furnace.
  • EP 0 184 140 A2 discloses an electric arc furnace in which the electrode arm is provided, at least on part of its outside, with a layer of good electrical conductivity, e.g. made of copper or aluminum. This layer is plated and serves as a high current conductor for the electrode current.
  • electrode support arms serve both to hold an electrode and to conduct current to the electrode. They experience on the one hand a mechanical load by the weight of the electrode and the electrode support arm itself and on the other hand a thermal load. Therefore, electrode support arms are usually designed as a hollow profile in which coolant channels are provided, so that the electrode support arm can be cooled.
  • an electrode arm in which the current supply to the electrode is ensured by a sleeve completely surrounding the electrode arm.
  • the sleeve may be insulated or in conductive connection with the electrode arm.
  • the costly and expensive plating can be replaced, in particular by applying inexpensive standard copper plates.
  • the electrically conductive layer fixedly connected to the support structure by the plurality of first connection portions is cooled by the cooled electrode support arm via the first connection portions.
  • Fig. 1 is a cross-sectional view of a portion of a Elektrodentragarms after a first
  • Embodiment perpendicular to the longitudinal direction
  • Fig. 2 is a plan view of the part of an electrode support arm of Fig. 1;
  • Fig. 3 is a cross-sectional view of a portion of a Elektrodentragarms after a second
  • Embodiment perpendicular to the longitudinal direction
  • FIG. 4 is a perspective view of an electrode support arm according to the first embodiment
  • Fig. 5 is a side view, partly in section, of an electric arc furnace.
  • FIG. 6 is a plan view of the electrode support arms of the furnace of FIG. 5.
  • Electrodes 5 and 6 show an electric arc furnace 1 with three approximately parallel to each other arranged Elektrodentragarmen 2, 3, 4, of which in the sectional view of FIG. 5, only the electrode support arms 3 and 4 are shown.
  • the electrode support arms 2, 3, 4 are liftable and lowered by lifting columns 5 in a known manner and by means of a portal 6, in which the lifting columns 5 are guided, pivotable about an axis 7 to the side.
  • Each of the electrode arms 2, 3, 4 has an Elektrodeneinspannvortechnisch 8, which includes a contact jaw 9, which is supported on the Elektrodenarm, and by which an electrode 10 is clamped to the electrode support arm and is powered.
  • the electrodes 10 are formed as so-called combination electrodes with a metallic upper part and a screw-on, the combustion underlying lower part.
  • the electrode support arms 2, 3, 4 have a box-shaped profile 18 (see FIG. 4) and, in addition to cooling channels for a cooling liquid, such as water, may have a device for actuating the electrode clamping device. Details of a corresponding exemplary construction of the electrode arms 2, 3, 4 and of the clamping device 8 can be found in EP 0 184 140 A2.
  • the electrode support arms 2 and 4 over their entire length, the middle electrode support arm only on a portion of its length on a plurality of outer sides of the box profile from the electrode end with a highly electrically conductive layer 100 of copper or Aluminum provided, which is shown hatched in Figures 5 and 6 only at the end of the respective layer.
  • the electrically conductive layer 100 is applied by plating copper.
  • a high-current tube 14 is fastened by means of support arms 13, which is electrically connected to the region of the electrode support arm 3 provided with the electrically highly conductive layer 12.
  • connection terminals 15 are provided for high-current cables 16, which are connected to a transformer, not shown, and feed the current for the electrodes 10.
  • the electrode support arms 2 to 4 are each secured electrically isolated on the associated lifting column 5 by means of bolts. The insulation is indicated in Fig. 5 by an insulating plate 17.
  • the electrode support arm 4 in the embodiment shown in FIGS. 5 and 6 has an electrically conductive layer 100 on a plurality of the four outer sides in the longitudinal direction. But it would also be sufficient if the electrically conductive layer 100 is formed only on an outer side (preferably the upper), or 2 or 3 of the outer sides. Under an outside should be understood in each case the side of a wall of a profile body, which faces away from the interior in the profile body. A profile body with a rectangular cross-section therefore has four outer sides which extend in the longitudinal direction.
  • An electrode support arm in which an electrically conductive layer 100 is formed on the upper outer side 102 will be described below by way of example.
  • the electrode support arm is formed by a rectangular box profile 19 extending in a longitudinal direction z having a length a7.
  • the rectangular box profile 19 has a bottom wall 18a and a top wall 18d and two side walls 18b, 18c connecting the bottom and top walls 18a, 18d.
  • the box profile 19 has a length a7 in the longitudinal direction z, a width c7 in a transverse direction y, which is perpendicular to the longitudinal direction z, and a height h7 in a vertical direction x, which is perpendicular to the longitudinal direction z and senkecht to the transverse direction y on.
  • the walls 18a, 18b, 18c, 18d each have a thickness hl, but may also have different thicknesses.
  • the upper wall 18d has an inner side 101, which is disposed opposite to the lower wall 18a, and an outer side 102.
  • the two side walls 18b, 18c and the lower wall 18a each have an inner side facing the opposite wall, and an outer side facing away from the opposite wall, respectively.
  • the walls 18a to 18d of the box profile element 18 are formed of sheet steel and form the supporting structure of the electrode support arms.
  • the box profile 19 can preferably be formed from one or a plurality of box profile elements 18, 18 ', which are connected in the longitudinal direction z and have the above construction.
  • the box profile elements 18, 18 ' can be formed with different lengths in the longitudinal direction z.
  • the electrically conductive layer 100 extends in the transverse direction y, preferably with substantially the same width c7 as the electrode support arm.
  • the electrically conductive layer 100 has a thickness h2 in the height direction x.
  • the electrically conductive layer 100 consists of a plate-shaped copper sheet 100.
  • the copper sheet 100 bears against the outer side 102 of the upper wall 18d of the first box profile element 18.
  • the copper sheet 100 is arranged on the first box profile element 18 such that the right and left edges in the transverse direction y are preferably flush with the edges of the outer side 102 of the upper wall 18d of the box profile element 18.
  • the copper sheet 100 has an outer surface 104, which faces away from the outer side 102 of the wall plate 18d.
  • the copper sheet 100 has an end face 134 each.
  • the copper sheet 100 has a plurality of first connection portions 110, or rather, is connected to the upper wall sheet 18d by means of the connection portions 110. As shown in the figures, the first connection portions 110 are substantially distributed over the entire copper sheet 100.
  • the first connection regions 110 each have a circular, continuous opening 112 with a diameter d 1.
  • Each through opening 112 of a first connection region 110 has at the lower edge of the openings an inner edge which faces the outer side 102 of the box profile element 18.
  • the copper sheet 100 is connected at the inner edges of the openings 112 in each case by a cohesive connection 111 with the upper wall 18 d of the box profile element 18.
  • the cohesive connection is preferably a weld 111.
  • the weld 1 11 each extends along the inner peripheral edge of the opening, which faces the outer side 102 of the Kastenpro f ⁇ lelements 18.
  • the openings 112 are completely filled in the remaining areas with a material that conducts heat well, preferably copper or aluminum.
  • Each of the first connection regions 110 is arranged with a minimum distance z from the closest adjacent connection region 110.
  • the connecting portions 1 10 on the copper sheet 100 are arranged in a grid.
  • the grid consists of a rectangular, preferably square grid, in which additionally a central first connecting area 110 is arranged on the intersection of the diagonals.
  • the rectangular grid of the grid has in the longitudinal direction z a distance al of the grid points. That Two adjacent first connection regions 110 have an edge distance a2 in the longitudinal direction z.
  • the rectangular grid of the grid has a distance cl of the grid points in the transverse direction y. That two adjacent first connecting regions 1 10 have an edge distance c2 in the transverse direction y.
  • the centers of two adjacent first connection regions 110 are spaced apart by a distance zl. That two adjacent first connection regions 1 10 have an edge distance z2 in the diagonal direction.
  • the centers of the lying in the transverse direction y closest to the edge of the copper sheet 100 connecting portions 1 10 have a distance c5 from the edge. That the edge distance between a first connection portion 110 and the edge of the copper sheet 100 is the distance c6 in the transverse direction y.
  • FIG. 4 shows an enlarged cross-sectional view of a portion of the electrode support arm 2, 3, 4.
  • the portion is formed by two interconnected box profile elements 18, 18 '.
  • the first Kastenpro filelement 18 has a length a8 in the longitudinal direction z.
  • the second box section element 18 ' has a length a9 in the longitudinal direction z.
  • the first box section element 18 and the second box section element 18 ' are connected to each other by a peripheral weld 133.
  • the copper sheet 100 is formed and arranged so that the end face 134 before welding the adjacent box profile elements 18, 18 'each have a distance a5 in the longitudinal direction z from a first end of the upper wall 18d in the longitudinal direction z has. This distance allows easy welding of the adjacent box profile elements 18, 18 'by means of the weld 133, since the corresponding part of the outside 102 of the top wall 18d of the box profile element 18 is not covered by the copper sheet 100.
  • the centers of the first connection regions 110 are arranged at a distance a3 in the longitudinal direction z to the end face 134 of the copper sheet 100. That the edge distance from a first connection region 110 to the end face 134 of the copper sheet 100 is the distance a4 in the longitudinal direction z.
  • the copper sheet 100 is preferably materially bonded along the inner edge of the end face 134, preferably by a weld in a second connection region 130 with the outer side 102 of the box profile element 18.
  • the first box section element 18 and the second box section element 18 ' are connected by the substantially V-shaped weld seam 133, which extends along the circumference.
  • the greatest width b2 of the weld 133 lies between the outer side 102 of the upper wall 18d of the first box profile element 18 and the outer side 102 of the upper wall 18d of the second Kastenpro filelements 18 '.
  • the end surfaces 134 of the copper sheets 100 are spaced from each other by a distance bl in the longitudinal direction z, which results from the double distance a5 and is greater than the width b2 in the longitudinal direction z.
  • the gap 132 between the second connection regions 130 is filled with a material that conducts both heat as current comparable or as good as the material of the electrically conductive layer, eg, copper or aluminum.
  • box-section elements 18, 18 ' are preferably first produced with electrically conductive layer 100 and then welded.
  • first box profile elements 18, 18 ' can also be produced and welded without electrically conductive layer 100.
  • the electrically conductive layer 100 may be independently and fastened with other lengths in the z-direction and regardless of the position of the welds 133 over the first connection regions.
  • Fig. 3 shows a second embodiment of the electrode support arm.
  • the same components and sizes as in the first embodiment are denoted by the same reference numerals and will not be described again.
  • the plate-shaped copper sheet 100 is not welded in contrast to the first embodiment, but connected to the outside 102 by a plurality of connecting elements forming the first connecting portions 120.
  • connecting elements nails 121 are preferably used, as they are known for example from DE 10 2004 040 701 B3.
  • the nails 121 have an overall height h5 in the height direction y.
  • the nail head has a height h.3 in the height direction y and the nail shaft has a height h4 in the height direction y.
  • the nail shank 122 has a diameter d10, the nail head has a diameter d11.
  • the nails are durably pressed into the top wall 18d of the box profile member 18 and firmly connect the copper sheet 100 to the outside 102.
  • the nails 121 do not penetrate the walls of the box profile elements 18, 18 'completely. It is further shown that the connecting elements are distributed substantially over the entire copper sheet 100.
  • the nails 121 are arranged in a grid that corresponds to the grid of the first embodiment.
  • the copper sheets 100 For producing a Elektrodentragarms according to the second embodiment, the copper sheets 100, unlike the first embodiment, by shooting nails with connected to the box section 18, 18 '. The nails penetrate the copper sheet 100 and penetrate into the box profile element 18, 18 '.
  • no openings 1 12 must be provided in the copper sheets 100, so that this processing step can be omitted.
  • the nails 121 can be shot in easily and at a fast speed.
  • nails 121 with high thermal conductivity are preferably used.
  • fasteners for example, screws or pins could be used.
  • different nails 121 in particular different lengths and different thickness nails 121 in different areas of the electrode support arm 4 can be used.
  • the arrangement of the individual first connection regions 1 10, 120 to each other can also be done in other raster forms.
  • the individual connection regions 110, 120 may be arranged in rhomboidal patterns relative to one another.
  • the first connection regions 110, 120 can also be arranged in a random pattern relative to one another without screening.
  • the longitudinal edges of the copper sheet 100 may be welded to the box profile element 18, 18 'and / or an adjacent copper sheet 100.
  • the edges on the edges of the electrode support arm and / or those of the copper sheet 100 should be rounded to avoid voltage spikes.
  • the end face 134 of the copper sheets 100 may also be formed bevelled.
  • the electrode support arm can also be designed as a T-carrier or as a carrier designed in any other way.
  • connection elements preferably nails are used.
  • the nails are preferably with special impact or Eintreibmaschinen, as for example from DE 10th 2007 000 25 Al, driven or shot into the electrically conductive layer 100 and the wall 18d.
  • the thickness h1 of the wall of the box profile element 18, 18 'of the electrode support arm in the height direction x or the transverse direction y is ⁇ 30 mm, preferably between 5 and 20 mm, more preferably between 10 and 16 mm, e.g. 11 mm, 13 mm or 15 mm.
  • the thickness h2 of the electrically conductive layer 100 in the height direction x is between 1 and 15 mm, preferably between 3 and 6 mm, more preferably between 4 and 5 mm, e.g. 4 mm, 4.5 mm or 5 mm.
  • the height h3 of the nail head 123 in the height direction x is ⁇ 6 mm, preferably between 1 and 5 mm, more preferably between 2 and 3 mm, e.g. 2 mm, 2.5 mm or 3 mm.
  • the height h4 of the nail shank in the height direction x is 10 to 35 mm, preferably 10 to 20 mm, e.g. 12 mm, 15 mm or 17 mm.
  • the total height h5 of the nail in the height direction x is 1 1 mm to 41 mm, preferably 15 mm to 35 mm, e.g. 15 mm, 19 mm or 21 mm or 23 mm.
  • the height h7 of the electrode support arm in the height direction x is between 600 and 1500 mm, preferably between 800 and 1000 mm, e.g. 800 mm, 900 mm or 1000 mm.
  • the diameter d10 of the rod shank is preferably between 3 mm and 10 mm, more preferably between 3.5 mm and 6 mm, e.g. 4 mm.
  • the width bl in the longitudinal direction z between two end surfaces 134 of the electrically conductive layer 100 is preferably between 10 mm and 70 mm, more preferably between 20 mm and 40 mm, such as e.g. 30 mm.
  • the distances a1, cl of two first connection regions 110 in the longitudinal direction z are between 60 and 220 mm, preferably between 70 and 150 mm, more preferably between 80 and 120 mm, such as 90 mm, 100 mm or 110 mm. It follows that on and the same copper plate 1 OO in the longitudinal direction z preferably at least every 220 mm, a first connection portion 1 10 is provided. Next, it follows that at least one connecting area per circa 200 10 3 mm 2 copper sheet 100 is provided, and that are even with the use of several copper plates 100 of the preferred maximum distance in the longitudinal direction z between two first connection portions 110 on various copper plates 100 , 510 mm.
  • the distance a3 of a first connecting portion 110 to the edge of the second connecting portion 130 is between 60 and 220 mm, preferably between 70 and 150 mm, more preferably between 80 and 120 mm, such as e.g. 90 mm, 100 mm or 1 10 mm ..
  • the lengths a8 and a9 of a box profile element 18, 18 ' are between 500 mm and 4000 mm.
  • the diameter d 1 of a circular opening in the electrically conductive layer 100 is between 10 mm and 40 mm, preferably between 15 mm and 30 mm, more preferably between 15 and 25 mm, e.g. 20 mm.
  • the edge lengths of a rectangular opening in the electrically conductive layer 100 are between 10mm and 25mm for the short side and between 30mm and 80mm for the long side, such as the long side. 18mm x 50mm.
  • the area of a first connection region is between 78 mm 2 and 2000 mm 2 , preferably between 200 mm 2 and 400 mm 2 , such as 314 mm 2 .
  • a ratio of the area of the first connection regions 110, 120 to a total area of the electrically conductive layer 100 is greater than 1% and less than 20%, preferably greater than 3% and less than 15%, more preferably greater than 5% and less than 10 %, such as 6%, 7%, 8% or 9%.
  • a ratio of an area of the first connection areas 110, 120 together with the second connection areas 130 to a total area of the electrically conductive layer 100 is greater than 2% and less than 40%, preferably greater than 3% and less than 30%, more preferably greater than 4% and less than 15%, such as 6%, 9%, 10% or 13%.
  • the thermal conductivity of the electrically conductive layer 100 and the filler material for the first and second connection regions 110, 130 is> 200 W / (mK), preferably> 300 W / (mK), more preferably> 350 W / (mK), such as eg 350 W / (m K) and 380 W / (m-K).
  • the electrical conductivity of the electrically conductive layer 100 and the filler material for the first and second connection regions 110, 130 is> 30 10 6 S / m, preferably> 35-10 6 S / m and more preferably> 50- 10 6 S / m, such as 56 10 6 S / m or 58-10 6 S / m.

Landscapes

  • Physics & Mathematics (AREA)
  • Engineering & Computer Science (AREA)
  • Plasma & Fusion (AREA)
  • Vertical, Hearth, Or Arc Furnaces (AREA)

Abstract

L'invention concerne un bras de support d'électrode avec une couche électriquement conductrice (100) disposée sur au moins une face extérieure du bras de support d'électrode (4). La couche électriquement conductrice est une tôle faite d'un premier matériau avec une conductivité électrique ≥ 30×106 S/m et une conductivité thermique ≥ 200 W/(m×K), fixée sur la face extérieure du bras de support d'électrode par une pluralité de zones de liaison (110, 120), en assurant un contact thermoconducteur avec celui-ci.
EP10736632A 2009-07-23 2010-07-22 Bras de support d'électrode avec conducteur de courant fixé localement Withdrawn EP2301304A1 (fr)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE102009034407A DE102009034407A1 (de) 2009-07-23 2009-07-23 Elektrodentragarm mit lokal befestigtem Stromleiter
PCT/EP2010/004507 WO2011009622A1 (fr) 2009-07-23 2010-07-22 Bras de support d'électrode avec conducteur de courant fixé localement

Publications (1)

Publication Number Publication Date
EP2301304A1 true EP2301304A1 (fr) 2011-03-30

Family

ID=42671764

Family Applications (1)

Application Number Title Priority Date Filing Date
EP10736632A Withdrawn EP2301304A1 (fr) 2009-07-23 2010-07-22 Bras de support d'électrode avec conducteur de courant fixé localement

Country Status (3)

Country Link
EP (1) EP2301304A1 (fr)
DE (1) DE102009034407A1 (fr)
WO (1) WO2011009622A1 (fr)

Families Citing this family (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE102014001713B3 (de) * 2014-02-11 2015-03-26 Badische Stahl-Engineering Gmbh Elektrodentragarmkörper mit Tragkörper
DE102014208516A1 (de) 2014-05-07 2015-11-12 Sms Group Gmbh Vorrichtung zum Stützen eines Elektrodenarms einer Hochstromzuführung für einen metallurgischen Ofen
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 (12)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
SE322850B (fr) * 1965-06-10 1970-04-20 Asea Ab
US3602624A (en) * 1970-03-11 1971-08-31 Dixie Bronze Co Unitized electrode holder for electric furnace electrodes or the like
EP0061612B1 (fr) 1981-03-24 1985-08-07 Fried. Krupp Gesellschaft mit beschränkter Haftung Système de conducteurs pour courant intense pour fours électriques
US4682341A (en) 1984-11-29 1987-07-21 Fuchs Systemtechnik Gmbh Electric arc furnace
DE4236158C1 (de) 1992-10-20 1994-03-17 Mannesmann Ag Elektrodentragarm für Lichtbogenöfen
ES2332270T3 (es) * 2002-08-28 2010-02-01 Arndt Dung Procedimientos y dispositivos para el control de la presion de sujecion que provoca un cilindro de ajuste y que fija un electrodo intercambiable en el brazo portante de electrodo.
DE102004040701B3 (de) 2004-08-23 2005-07-14 Hilti Ag Befestigungselement
DE102006027648A1 (de) 2006-06-13 2007-12-20 Arndt Dung Wandungselemente für einen wassergekühlten, stromführenden Elektrodentragarm und aus solchen Wandungselementen bestehende Elektrodentragarme
DE102006032440A1 (de) * 2006-07-13 2008-01-17 Siemens Ag Hochstromleiter, insbesondere für einen Lichtbogenofen, sowie Verfahren zur Ausbildung eines Hochstromleiters
EP1901585B1 (fr) 2006-09-18 2012-08-29 Homa Gesellschaft f. Hochstrom- Magnetschalter v. Vollenbroich GmbH & Co. KG Support de bras pour four à arc
DE102007000025A1 (de) 2007-01-19 2008-08-28 Hilti Ag Handgeführtes Setzgerät
DE102007000235A1 (de) 2007-04-20 2008-10-23 Hilti Aktiengesellschaft Setzwerkzeug für einen Dämmstoffdübel

Non-Patent Citations (1)

* Cited by examiner, † Cited by third party
Title
See references of WO2011009622A1 *

Also Published As

Publication number Publication date
WO2011009622A1 (fr) 2011-01-27
DE102009034407A1 (de) 2011-02-03

Similar Documents

Publication Publication Date Title
DE102010037005B3 (de) Metallplatte mit eingebettetem Heizelement und Verfahren zu ihrer Herstellung
EP0175395A1 (fr) Dispositif de suspension pour l'amenée de courant aux cathodes
DE2553032C3 (de) Kontaktschiene aus elektrisch leitendem Material
EP0184140B2 (fr) Four à arc
EP2301304A1 (fr) Bras de support d'électrode avec conducteur de courant fixé localement
EP2593999A1 (fr) Coffret de barres conductrices et système de canalisations préfabriquées comprenant un coffret de barres conductrices
EP0541044B1 (fr) Four à arc à courant continu
CH649317A5 (de) Elektrolysezelle mit kompensierten magnetfeldkomponenten.
DE102013101080B3 (de) Verfahren zur Herstellung eines Strombandes
DE102015015337B4 (de) Induktionstiegelofen und magnetischer Rückschluss hierfür
DE3406797C2 (de) Beschichtete Ventilmetallanode zur elektrolytischen Gewinnung von Metallen oder Metalloxiden
DE4102565A1 (de) Plattenartiges metallelement fuer eine elektrische widerstandsgittervorrichtung
EP2400581B1 (fr) Dispositif de montage pour cellules de batterie
DE102014001713B3 (de) Elektrodentragarmkörper mit Tragkörper
DE102012214244A1 (de) Verfahren zum Kompaktieren, Stromschiene und Vorrichtung
DE10316908A1 (de) Heizvorrichtung
DE3502706C2 (fr)
EP2452408B1 (fr) Barre omnibus modulaire
DE3443574A1 (de) Lichtbogenofen
DE4424009A1 (de) Bodenelektrode für einen Gleichstrom-Lichtbogenofen
EP1120482A1 (fr) Assemblage cathodique
DE3406777A1 (de) Beschichtete ventilmetallanode zur elektrolytischen gewinnung von metallen oder metalloxiden
DE3941056C2 (de) Verfahren zur Herstellung einer elektrisch gutleitenden Verbindung durch Reibschweißung und Stromleiter
AT236748B (de) Elektrodensatz zum Widerstandsschweißen
DE2535157C2 (de) Induktor zur Magnetimpulsbearbeitung metallischer Rohrhalbzeuge

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

17P Request for examination filed

Effective date: 20101130

AK Designated contracting states

Kind code of ref document: A1

Designated state(s): AL AT BE BG CH CY CZ DE DK EE ES FI FR GB GR HR HU IE IS IT LI LT LU LV MC MK MT NL NO PL PT RO SE SI SK SM TR

AX Request for extension of the european patent

Extension state: BA ME RS

GRAP Despatch of communication of intention to grant a patent

Free format text: ORIGINAL CODE: EPIDOSNIGR1

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

Free format text: STATUS: THE APPLICATION IS DEEMED TO BE WITHDRAWN

18D Application deemed to be withdrawn

Effective date: 20111129