EP3328576B1 - Electro-slag remelting installation - Google Patents

Electro-slag remelting installation Download PDF

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Publication number
EP3328576B1
EP3328576B1 EP16763716.4A EP16763716A EP3328576B1 EP 3328576 B1 EP3328576 B1 EP 3328576B1 EP 16763716 A EP16763716 A EP 16763716A EP 3328576 B1 EP3328576 B1 EP 3328576B1
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EP
European Patent Office
Prior art keywords
mold
electro
slag remelting
installation according
consumable electrode
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EP16763716.4A
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German (de)
French (fr)
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EP3328576A1 (en
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Henrik Franz
Harald Scholz
Ulrich Biebricher
Thomas KILZER
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ALD Vacuum Technologies GmbH
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ALD Vacuum Technologies GmbH
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Priority to SI201630377T priority Critical patent/SI3328576T1/en
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    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B22—CASTING; POWDER METALLURGY
    • B22D—CASTING OF METALS; CASTING OF OTHER SUBSTANCES BY THE SAME PROCESSES OR DEVICES
    • B22D23/00—Casting processes not provided for in groups B22D1/00 - B22D21/00
    • B22D23/06—Melting-down metal, e.g. metal particles, in the mould
    • B22D23/10—Electroslag casting
    • C—CHEMISTRY; METALLURGY
    • C22—METALLURGY; FERROUS OR NON-FERROUS ALLOYS; TREATMENT OF ALLOYS OR NON-FERROUS METALS
    • C22B—PRODUCTION AND REFINING OF METALS; PRETREATMENT OF RAW MATERIALS
    • C22B9/00—General processes of refining or remelting of metals; Apparatus for electroslag or arc remelting of metals
    • C22B9/16—Remelting metals
    • C22B9/18—Electroslag remelting
    • 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
    • H05B7/07—Electrodes designed to melt in use

Definitions

  • the invention relates to an electroslag remelting plant with an open-top mold and at least one Abschmelzelektrode, which projects into the mold.
  • the end of the consumable electrode which protrudes into the mold is melted off.
  • the molten metal falls through a molten slag above a melt in the mold, and by a chemical reaction of the metal with the slag these contaminants such as sulfur and other non-metallic elements are removed. Inclusions in the electrode are thus transferred to the slag and do not get into the block.
  • the necessary temperature for melting the Abschmelzelektrode is generated by an electric current with high electric current flowing through the Abschmelzelektrode the slag and the melt.
  • the slag is an electrical resistance that heats up due to the current passage.
  • the slag is liquefied and heated.
  • the two electric poles of the slag form on the one hand the building up block in the mold and on the other hand the electrode. Due to the evolution of heat in the slag, the electrode melts at the interface to the slag.
  • the higher the temperature of the slag the higher the melting rate of the electrode.
  • the height of the slag temperature is limited. Therefore, only by increasing the cross-sectional area at a constant slag bath temperature can the melting rate be increased.
  • the Abschmelzelektrode is a rod-shaped structure with a round or rectangular cross-section, whose axis is aligned vertically.
  • the melt rate depends on the cross-sectional area, which is related to a plane perpendicular to the electrode axis.
  • the diameter of the mold also determines the sizes of the blocks that are made from the solidified melt.
  • so-called T-molds are used. In the upper, funnel-shaped enlarged portions of the mold dips the Abschmelzelektrode whose cross section is greater than the cross section of the lower, smaller portion of the T-mold, which receives the block.
  • the JP 2009-046715 describes the electrical sliding contact of an electrode rod, at the lower end in the axial extension of the Abschmelzelektrode is attached.
  • the electrode rod can be aligned obliquely to a guide with the sliding contacts.
  • the JP S53-130231 describes a system for drawing the re-solidified melt in a strand consisting of bent and straight sections from the bottom of the mold.
  • a framework consisting of the mold and the Holder for the electrode rod, can be easily tilted to create curved sections.
  • the object of the invention is therefore to provide an electroslag remelting system which, despite a small given Abschmelzelektrodenqueritess has an increased melting rate.
  • the invention provides that the Abschmelzelektrode is oriented obliquely to a vertical, wherein the angle between the axis of the Abschmelzelektrode and the vertical between 20 ° and 60 °.
  • the projecting into the mold end surface of the Abschmelzelektrode runs obliquely according to their inclination to the axis of the Abschmelzelektrode.
  • the effective Abschmelz measurements therefore no longer corresponds to the cross-sectional area, with respect to a plane perpendicular to the axis of the electrode, but with respect to a horizontal plane.
  • the effective melting surface thus increases by the reciprocal of the cosine of the angle between the vertical and the axis of the inclined Abmelzelektrode.
  • the electrode Since the electrode is arranged at an angle, the overall height of the system is reduced or it can be used with constant height longer Abschmelzelektroden.
  • the oblique arrangement makes it possible to hold one or more electrodes close to the location of the subsequent melting position, thus minimizing the time delay when changing electrodes.
  • the angle between the axis of the consumable electrode and the vertical is 45 °.
  • the invention provides that the Abschmelzelektrode is held in a tracking, which is designed so that the Abschmelzelektrode is slidable along its inclined axis.
  • Such tracking can z. B. have a roller bearing.
  • the weight of the Abschmelzelektrode can be distributed over several roles.
  • At least two melting electrodes can be provided which are each provided with a tracking. This allows a quick change of electrodes. One electrode is burned while the other is being prepared in its displacement system and moved to a position above the mold as soon as the previous one is consumed.
  • the mold is cooled, so that the melt solidifies in its lower part and can be discharged as a strand from the open bottom of the mold.
  • a device is provided, which deducts in its lower portion to a strand solidified melt through the bottom of the mold.
  • a separating device can furthermore be provided which is designed so that it is capable of separating the tail of the strand emerging on the bottom of the mold. Furthermore, a deflection device may be provided, which laterally separates the separated end pieces from the mold z. B. derives on a conveyor belt in a magazine or warehouse.
  • the plant according to the invention consists of a mold 1, which consists of a tube 2 of constant cross-section and an upwardly adjoining funnel 3.
  • a Abschmelzelektrode 4 In these immersed a Abschmelzelektrode 4, the axis 5 is obliquely to a vertical 6, which also forms the axis of the tube 2, is arranged.
  • the Abschmelzelektrode 4 is mounted on rollers 7, which form an inclined plane.
  • the Abschmelzelektrode 4 is held by a tracking 8, with the aid of which they can be tracked according to the erosion in the hopper 3 of the mold 1.
  • the forming melt which solidifies due to a not shown cooling in the lower part to a strand 10, which is deducted by a device, not shown here down and possibly through a likewise not shown separating device into individual blocks is shared.
  • a deflection device which is also not shown in detail, laterally via a means, for. B. a conveyor belt, in a magazine or warehouse (not shown) derived.
  • melt 9 is located within the hopper 3, a slag layer 11 having a horizontally extending surface which is touched by the Abschmelzelektrode 4.
  • the amount of the deposition rate is determined by the size of the ablation area 13, that is, the slag layer 11 contacting end surface of the ablation electrode 4.
  • the Abschmelz measurements 13 extends horizontally and thus according to the inclination of the Abschmelzelektrode 4 obliquely to the axis 5. Since the Abschmelzelektrode 4 is obliquely, the Abschmelz Structure 13 increases relative to the cross-sectional area 12 of the Abschmelzelektrode 4, by an amount which is determined by the size of the angle ⁇ between the axis 5 of the Abschmelzelektrode 4 and the vertical 6. At an angle of 45 °, the end surface 13 increases by about 40% relative to the cross-sectional area 12.
  • the funnel 3 has an oblique inlet edge 14 on the side of the consumable electrode 4.
  • the energy for melting the electrode 4 is achieved by a power supply, not shown here.
  • the Abschmelzelektrode 4, the slag layer 11 and the melt 9 and the strand 10 form parts of an electric circuit, the slag layer 11 is the largest resistance, so that there most of the energy is absorbed.

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  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Chemical & Material Sciences (AREA)
  • Manufacturing & Machinery (AREA)
  • Materials Engineering (AREA)
  • Metallurgy (AREA)
  • Organic Chemistry (AREA)
  • Physics & Mathematics (AREA)
  • Plasma & Fusion (AREA)
  • Manufacture And Refinement Of Metals (AREA)
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Description

Die Erfindung bezieht sich auf eine Elektroschlacke-Umschmelzanlage mit einer oben offenen Kokille und mindestens einer Abschmelzelektrode, die in die Kokille hineinragt.The invention relates to an electroslag remelting plant with an open-top mold and at least one Abschmelzelektrode, which projects into the mold.

Eine derartige Anlage ist z. B. in der DE 108 39 432 C2 beschrieben.Such a system is z. B. in the DE 108 39 432 C2 described.

Zur Erzeugung eines Ingots (Blocks) aus einem von Kontaminationen befreiten Metall wird das Ende der Abschmelzelektrode abgeschmolzen, das in die Kokille hineinragt. Das geschmolzene Metall fällt durch eine flüssige Schlacke oberhalb einer Schmelze in der Kokille, wobei durch eine chemische Reaktion des Metalls mit der Schlacke diesen Kontaminationen wie Schwefel und andere nichtmetallische Elemente entnommen werden. Einschlüsse in der Elektrode werden somit in die Schlacke überführt und gelangen nicht in den Block.To produce an ingot (ingot) from a contaminant-free metal, the end of the consumable electrode which protrudes into the mold is melted off. The molten metal falls through a molten slag above a melt in the mold, and by a chemical reaction of the metal with the slag these contaminants such as sulfur and other non-metallic elements are removed. Inclusions in the electrode are thus transferred to the slag and do not get into the block.

Die notwendige Temperatur zum Abschmelzen der Abschmelzelektrode wird durch einen elektrischen Strom mit hoher elektrischer Stromstärke erzeugt, der durch die Abschmelzelektrode die Schlacke und die Schmelze fließt. Dabei stellt die Schlacke einen elektrischen Widerstand dar, der sich auf Grund des Stromdurchganges erhitzt. Dabei wird die Schlacke verflüssigt und erhitzt. Die beiden elektrischen Pole der Schlacke bilden einerseits der sich aufbauende Block in der Kokille und andererseits die Elektrode. Auf Grund der Wärmeentwicklung in der Schlacke schmilzt die Elektrode an der Trennfläche zur Schlacke ab.The necessary temperature for melting the Abschmelzelektrode is generated by an electric current with high electric current flowing through the Abschmelzelektrode the slag and the melt. In this case, the slag is an electrical resistance that heats up due to the current passage. The slag is liquefied and heated. The two electric poles of the slag form on the one hand the building up block in the mold and on the other hand the electrode. Due to the evolution of heat in the slag, the electrode melts at the interface to the slag.

Je höher die Temperatur der Schlacke ist, desto höher ist die Abschmelzrate der Elektrode. Der Höhe der Schlackentemperatur sind aber Grenzen gesetzt. Daher kann nur über eine Erhöhung der Querschnittsfläche bei konstanter Schlackenbadtemperatur die Schmelzrate erhöht werden.The higher the temperature of the slag, the higher the melting rate of the electrode. However, the height of the slag temperature is limited. Therefore, only by increasing the cross-sectional area at a constant slag bath temperature can the melting rate be increased.

Bei der bekannten Ausführung einer solchen Anlage ist die Abschmelzelektrode ein stangenförmiges Gebilde mit einem runden oder rechteckigen Querschnitt, deren Achse vertikal ausgerichtet ist. Die Schmelzrate hängt dabei von der auf eine Ebene senkrecht zur Elektrodenachse bezogenen Querschnittsfläche ab. Um höhere Schmelzraten zu erzielen, sind bisher der Durchmesser der Kokille und die der Elektrode erhöht worden. Der Durchmesser der Kokille bestimmt aber auch die Größen der Blöcke, die aus der erstarrten Schmelze hergestellt werden. Um auch bei kleinen Blockgrößen eine genügend hohe Schmelzrate zu erzielen, werden sogenannte T-Kokillen (Trichter) eingesetzt. In den oberen, trichterförmig vergrößerten Abschnitten der Kokille taucht die Abschmelzelektrode ein, deren Querschnitt größer ist als der Querschnitt des unteren, kleineren Abschnitts der T-Kokille, der den Block aufnimmt.In the known embodiment of such a system, the Abschmelzelektrode is a rod-shaped structure with a round or rectangular cross-section, whose axis is aligned vertically. The melt rate depends on the cross-sectional area, which is related to a plane perpendicular to the electrode axis. To achieve higher melt rates, the diameter of the mold and that of the electrode have hitherto been increased. The diameter of the mold also determines the sizes of the blocks that are made from the solidified melt. In order to achieve a sufficiently high melt rate even with small block sizes, so-called T-molds (funnels) are used. In the upper, funnel-shaped enlarged portions of the mold dips the Abschmelzelektrode whose cross section is greater than the cross section of the lower, smaller portion of the T-mold, which receives the block.

Die JP 2009-046715 beschreibt die elektrische Schleifkontaktierung einer Elektrodenstange, an deren unterem Ende in axialer Verlängerung die Abschmelzelektrode befestigt ist. Um unregelmäßige Gewichtsverlagerungen der Abschmelzelektrode beim Abschmelzen ausgleichen zu können, kann sich die Elektrodenstange schräg zu einer Führung mit den Schleifkontakten ausrichten.The JP 2009-046715 describes the electrical sliding contact of an electrode rod, at the lower end in the axial extension of the Abschmelzelektrode is attached. In order to compensate for irregular weight shifts of Abschmelzelektrode during melting, the electrode rod can be aligned obliquely to a guide with the sliding contacts.

Die JP S53-130231 beschreibt ein System zum Abziehen der wiedererstarrten Schmelze in einem Strang, der aus gebogenen und geraden Abschnitten besteht, aus dem Boden der Kokille. Ein Gerüst, bestehend aus der Kokille und der Halterung für die Elektrodenstange, kann leicht gekippt werden, um gebogene Abschnitte zu erzeugen.The JP S53-130231 describes a system for drawing the re-solidified melt in a strand consisting of bent and straight sections from the bottom of the mold. A framework consisting of the mold and the Holder for the electrode rod, can be easily tilted to create curved sections.

Zum Stand der Technik sind weiterhin zu nennen: DE 29 50 531 A1 und AT 367 668 B .The prior art should also be mentioned: DE 29 50 531 A1 and AT 367 668 B ,

Die Aufgabe der Erfindung besteht somit darin, eine Elektroschlacke-Umschmelzanlage zu schaffen, die trotz eines geringen gegebenen Abschmelzelektrodenquerschnitts eine erhöhte Schmelzrate aufweist.The object of the invention is therefore to provide an electroslag remelting system which, despite a small given Abschmelzelektrodenquerschnitts has an increased melting rate.

Zur Lösung der Aufgabe sieht die Erfindung vor, dass die Abschmelzelektrode schräg zu einer Vertikalen ausgerichtet ist, wobei der Winkel zwischen der Achse der Abschmelzelektrode und der Vertikalen zwischen 20° und 60° liegt.To achieve the object, the invention provides that the Abschmelzelektrode is oriented obliquely to a vertical, wherein the angle between the axis of the Abschmelzelektrode and the vertical between 20 ° and 60 °.

Dabei verläuft die in die Kokille ragende Endfläche der Abschmelzelektrode entsprechend ihrer Schrägstellung schräg zu der Achse der Abschmelzelektrode.In this case, the projecting into the mold end surface of the Abschmelzelektrode runs obliquely according to their inclination to the axis of the Abschmelzelektrode.

Die effektive Abschmelzfläche entspricht daher nicht mehr der Querschnittsfläche, bezogen auf eine Ebene senkrecht zur Achse der Elektrode, sondern bezogen auf eine horizontale Ebene. Die effektive Abschmelzfläche erhöht sich damit um den Kehrwert des Kosinus des Winkels zwischen der Vertikalen und der Achse der schräg gestellten Abschmelzelektrode.The effective Abschmelzfläche therefore no longer corresponds to the cross-sectional area, with respect to a plane perpendicular to the axis of the electrode, but with respect to a horizontal plane. The effective melting surface thus increases by the reciprocal of the cosine of the angle between the vertical and the axis of the inclined Abmelzelektrode.

Neben der Erhöhung der Abschmelzfläche besitzt diese Anordnung auch noch weitere Vorteile.In addition to increasing the Abschmelzfläche this arrangement also has other advantages.

Um größere Abschmelzflächen zu erhalten, wurden bisher mehrere Elektroden zusammengeschweißt, um eine dickere Elektrode zu erhalten. Dieser Verfahrensschritt ist nun nicht mehr notwendig.In order to obtain larger Abmelzflächen, so far several electrodes were welded together to obtain a thicker electrode. This process step is no longer necessary.

Da die Elektrode schräg angeordnet ist, wird die Bauhöhe der Anlage verringert bzw. es können bei gleich bleibender Bauhöhe längere Abschmelzelektroden eingesetzt werden.Since the electrode is arranged at an angle, the overall height of the system is reduced or it can be used with constant height longer Abschmelzelektroden.

Die schräge Anordnung ermöglicht es, eine oder mehrere Elektroden ortsnah der späteren Abschmelzposition vorzuhalten, um somit die Zeitverzögerung beim Wechsel von Elektroden zu minimieren.The oblique arrangement makes it possible to hold one or more electrodes close to the location of the subsequent melting position, thus minimizing the time delay when changing electrodes.

Vorzugsweise liegt der Winkel zwischen der Achse der Abschmelzelektrode und der Vertikalen bei 45°.Preferably, the angle between the axis of the consumable electrode and the vertical is 45 °.

Mit dem Abbrand der Elektrode muss diese nachgeführt werden. Dazu sieht die Erfindung vor, dass die Abschmelzelektrode in einer Nachführung gehalten ist, die so ausgebildet ist, dass die Abschmelzelektrode entlang ihrer schräg gestellten Achse verschiebbar ist.With the burning of the electrode, this must be tracked. For this purpose, the invention provides that the Abschmelzelektrode is held in a tracking, which is designed so that the Abschmelzelektrode is slidable along its inclined axis.

Eine solche Nachführung kann z. B. eine Rollenlagerung aufweisen. Damit kann das Gewicht der Abschmelzelektrode auf mehrere Rollen verteilt werden.Such tracking can z. B. have a roller bearing. Thus, the weight of the Abschmelzelektrode can be distributed over several roles.

Wie auch schon bei den Anlagen nach dem Stand der Technik, können auch hier wenigstens zwei Abschmelzelektroden vorgesehen werden, die mit je einer Nachführung versehen sind. Dies erlaubt einen schnellen Wechsel von Elektroden. Eine Elektrode befindet sich im Abbrand, während die andere in ihrem Verschiebesystem vorbereitet wird und in eine Position oberhalb der Kokille verschoben wird, sobald die vorhergehende verbraucht ist.As with the systems according to the prior art, here too at least two melting electrodes can be provided which are each provided with a tracking. This allows a quick change of electrodes. One electrode is burned while the other is being prepared in its displacement system and moved to a position above the mold as soon as the previous one is consumed.

Wie oben angedeutet, wird die Kokille gekühlt, so dass die Schmelze in ihrem unteren Bereich erstarrt und als Strang aus dem offenen Boden der Kokille abgeführt werden kann. Dazu ist eine Einrichtung vorgesehen, die in ihrem unteren Abschnitt zu einem Strang erstarrte Schmelze durch den Boden der Kokille abzieht.As indicated above, the mold is cooled, so that the melt solidifies in its lower part and can be discharged as a strand from the open bottom of the mold. For this purpose, a device is provided, which deducts in its lower portion to a strand solidified melt through the bottom of the mold.

Sollen auf diese Weise klein dimensionierte Blöcke entstehen, so kann weiterhin eine Trennvorrichtung vorgesehen werden, die so ausgebildet ist, dass sie das auf dem Boden der Kokille austretende Endstück des Strangs abzutrennen vermag. Weiterhin kann eine Ablenkvorrichtung vorgesehen werden, die die abgetrennten Endstücke seitlich zur Kokille z. B. auf ein Transportband in ein Magazin oder Lager ableitet.If small-sized blocks are to be formed in this way, a separating device can furthermore be provided which is designed so that it is capable of separating the tail of the strand emerging on the bottom of the mold. Furthermore, a deflection device may be provided, which laterally separates the separated end pieces from the mold z. B. derives on a conveyor belt in a magazine or warehouse.

Im Folgenden soll anhand eines Ausführungsbeispiels die Erfindung näher erläutert werden. Dazu zeigen:

Fig. 1
eine Seitenansicht der Anordnung und
Fig. 2
eine Draufsicht.
In the following, the invention will be explained in more detail with reference to an embodiment. To show:
Fig. 1
a side view of the arrangement and
Fig. 2
a top view.

Die erfindungsgemäße Anlage besteht aus einer Kokille 1, die aus einem Tubus 2 gleich bleibenden Querschnitts und einem sich nach oben anschließenden Trichter 3 besteht. In diesen taucht eine Abschmelzelektrode 4 ein, deren Achse 5 schräg zu einer Vertikalen 6, die gleichzeitig die Achse des Tubus 2 bildet, angeordnet ist. Die Abschmelzelektrode 4 ist auf Rollen 7, die eine schräge Ebene bilden, gelagert. Die Abschmelzelektrode 4 wird von einer Nachführung 8 gehalten, mit deren Hilfe sie entsprechend des Abbrandes in den Trichter 3 der Kokille 1 nachgeführt werden kann.The plant according to the invention consists of a mold 1, which consists of a tube 2 of constant cross-section and an upwardly adjoining funnel 3. In these immersed a Abschmelzelektrode 4, the axis 5 is obliquely to a vertical 6, which also forms the axis of the tube 2, is arranged. The Abschmelzelektrode 4 is mounted on rollers 7, which form an inclined plane. The Abschmelzelektrode 4 is held by a tracking 8, with the aid of which they can be tracked according to the erosion in the hopper 3 of the mold 1.

In dem Tubus 2 befindet sich die sich bildende Schmelze, die aufgrund einer hier nicht dargestellten Kühlung im unteren Bereich zu einem Strang 10 erstarrt, der durch eine hier nicht dargestellte Einrichtung nach unten abgezogen wird und ggf. durch eine ebenfalls nicht dargestellte Trennvorrichtung in einzelne Blöcke geteilt wird. Diese werden durch eine Umlenkeinrichtung, die ebenfalls nicht näher dargestellt ist, seitlich über ein Mittel, z. B. ein Transportband, in ein Magazin oder Lager (nicht dargestellt) abgeleitet.In the tube 2 is the forming melt, which solidifies due to a not shown cooling in the lower part to a strand 10, which is deducted by a device, not shown here down and possibly through a likewise not shown separating device into individual blocks is shared. These are by a deflection device, which is also not shown in detail, laterally via a means, for. B. a conveyor belt, in a magazine or warehouse (not shown) derived.

Oberhalb der Schmelze 9 befindet sich innerhalb des Trichters 3 eine Schlackenschicht 11 mit einer horizontal verlaufenden Oberfläche, die von der Abschmelzelektrode 4 berührt wird.Above the melt 9 is located within the hopper 3, a slag layer 11 having a horizontally extending surface which is touched by the Abschmelzelektrode 4.

Die Höhe der Abschmelzrate wird von der Größe der Abschmelzfläche 13, das ist die Schlackenschicht 11 berührende Endfläche der Abschmelzelektrode 4, bestimmt. Die Abschmelzfläche 13 verläuft horizontal und damit entsprechend der Schrägstellung der Abschmelzelektrode 4 schräg zu deren Achse 5. Da die Abschmelzelektrode 4 schräg gestellt ist, vergrößert sich die Abschmelzfläche 13 gegenüber der Querschnittsfläche 12 der Abschmelzelektrode 4, um einen Betrag, der von der Größe des Winkels α zwischen der Achse 5 der Abschmelzelektrode 4 und der Vertikalen 6 bestimmt wird. Bei einem Winkel von 45° erhöht sich die Endfläche 13 um ca. 40% gegenüber der Querschnittsfläche 12.The amount of the deposition rate is determined by the size of the ablation area 13, that is, the slag layer 11 contacting end surface of the ablation electrode 4. The Abschmelzfläche 13 extends horizontally and thus according to the inclination of the Abschmelzelektrode 4 obliquely to the axis 5. Since the Abschmelzelektrode 4 is obliquely, the Abschmelzfläche 13 increases relative to the cross-sectional area 12 of the Abschmelzelektrode 4, by an amount which is determined by the size of the angle α between the axis 5 of the Abschmelzelektrode 4 and the vertical 6. At an angle of 45 °, the end surface 13 increases by about 40% relative to the cross-sectional area 12.

Um einen schrägen Einlauf der Abschmelzelektrode 4 zu ermöglichen, besitzt der Trichter 3 auf der Seite der Abschmelzelektrode 4 eine schräge Einlaufkante 14.In order to allow an oblique inlet of the consumable electrode 4, the funnel 3 has an oblique inlet edge 14 on the side of the consumable electrode 4.

Die Energie zum Abschmelzen der Elektrode 4 wird durch eine hier nicht dargestellte Stromversorgung erreicht. Die Abschmelzelektrode 4, die Schlackenschicht 11 sowie die Schmelze 9 bzw. der Strang 10 bilden Teile eines Stromkreislaufes, wobei die Schlackenschicht 11 den größten Widerstand darstellt, so dass dort die meiste Energie aufgenommen wird.The energy for melting the electrode 4 is achieved by a power supply, not shown here. The Abschmelzelektrode 4, the slag layer 11 and the melt 9 and the strand 10 form parts of an electric circuit, the slag layer 11 is the largest resistance, so that there most of the energy is absorbed.

BezugszeichenlisteLIST OF REFERENCE NUMBERS

11
Kokillemold
22
Tubustube
33
Trichterfunnel
44
Abschmelzelektrodeconsumable
55
Achseaxis
66
Vertikalevertical
77
Rollenroll
88th
Nachführungtracking
99
Schmelzemelt
1010
Strangstrand
1111
Schlackenschichtslag layer
1212
QuerschnittsflächeCross sectional area
1313
Endflächeend face
1414
Einlaufkanteleading edge

Claims (9)

  1. Electro-slag remelting installation having a mold (1) that is open at the top and at least one consumable electrode (4), which extends into the mold (1), characterized in that the consumable electrode (4) is oriented to a vertical (6), wherein the angle between the axis (5) of the consumable electrode (4) and the vertical (6) is between 20° and 60°.
  2. Electro-slag remelting installation according to claim 1, characterized in that the end surface of the consumable electrode (4), extending into the mold (1), runs obliquely to the axis (5) of the consumable electrode (4) depending on its inclination.
  3. Electro-slag remelting installation according to claim 2, characterized in that the angle between the axis (5) of the consumable electrode (4) and the vertical (6) is approximately 45°.
  4. Electro-slag remelting installation according to claim 1, 2 or 3, characterized in that the consumable electrode (4) is held in a feeding unit (8), which is designed in such a manner that the consumable electrode (4) can be displaced along its inclined axis (5) .
  5. Electro-slag remelting installation according to one of the preceding claims, characterized in that at least two consumable electrodes (4), each with one feeding unit (8), are provided for one mold (1).
  6. Electro-slag remelting installation according to claim 4 or 5, characterized in that the feeding units (8) with the consumable electrodes (4) can be moved alternately over the mold (1) by means of a displacement system.
  7. Electro-slag remelting installation according to one of the preceding claims, characterized in that the mold (1) is cooled and has a device to remove the molten material (9), which has solidified in its bottom section into an ingot, through the bottom of the mold (1).
  8. Electro-slag remelting installation according to claim 7, characterized in that a separation apparatus is provided, which is designed in such a manner that it can separate the end piece of the ingot emerging from the bottom of the mold (1).
  9. Electro-slag remelting installation according to claim 8, characterized in that a deflection apparatus is provided for the separated end pieces, which diverts these laterally to the mold (1).
EP16763716.4A 2015-07-27 2016-07-26 Electro-slag remelting installation Active EP3328576B1 (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
SI201630377T SI3328576T1 (en) 2015-07-27 2016-07-26 Electro-slag remelting installation

Applications Claiming Priority (3)

Application Number Priority Date Filing Date Title
DE102015112229 2015-07-27
DE102015117661.0A DE102015117661A1 (en) 2015-07-27 2015-10-16 Electroslag remelting
PCT/DE2016/100339 WO2017016549A1 (en) 2015-07-27 2016-07-26 Electro-slag remelting installation

Publications (2)

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EP3328576A1 EP3328576A1 (en) 2018-06-06
EP3328576B1 true EP3328576B1 (en) 2019-07-17

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EP16763716.4A Active EP3328576B1 (en) 2015-07-27 2016-07-26 Electro-slag remelting installation

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US (1) US20180207719A1 (en)
EP (1) EP3328576B1 (en)
JP (1) JP2018522739A (en)
CN (1) CN108136493A (en)
DE (1) DE102015117661A1 (en)
RU (1) RU2689832C1 (en)
SI (1) SI3328576T1 (en)
WO (1) WO2017016549A1 (en)

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KR20220051868A (en) 2020-10-19 2022-04-27 삼성전자주식회사 Method and computing device for manufacturing semiconductor device

Family Cites Families (22)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US403326A (en) * 1889-05-14 Thomas j
DE572870C (en) * 1926-02-10 1933-03-24 William E Moore Process for treating iron which, in the molten state, drips through a layer of red-hot material
US3200232A (en) * 1963-06-11 1965-08-10 Soudure Electr Autogene Sa Process and apparatus for electric fusion welding
AT280505B (en) * 1967-12-27 1970-04-10 Boehler & Co Ag Geb Electrode holders in installations for electrical remelting of metals, in particular steels
US3677323A (en) * 1968-11-22 1972-07-18 Rheinstahl Huettenwerke Ag Process and apparatus for providing steel ingot
SU403326A1 (en) * 1971-01-04 1980-05-25 Институт электросварки им. Е.О.Патона Device for electroslag smelting of ingots
DE2319983B2 (en) * 1973-04-19 1975-11-06 Institut Elektroswarki Imeni E.O. Patona Akademii Nauk, Ukrainskoj Ssr, Kiew (Sowjetunion) Process for the production of metallic ring parts according to the electroslag remelting process
JPS5039601B2 (en) * 1973-05-11 1975-12-18
US3952792A (en) * 1974-07-25 1976-04-27 Consarc Corporation Method and apparatus for casting a plurality of ingots
GB1469850A (en) * 1974-12-30 1977-04-06 Inst Elektroswarki Patona Machine for electroslag refining and production of curved ingots
JPS53130231A (en) * 1977-04-21 1978-11-14 Mitsubishi Heavy Ind Ltd Manufacturing apparatus for curved tube with straight tube portion by continuous electroslag melting
DE2950531A1 (en) * 1979-12-15 1981-06-19 Leybold-Heraeus GmbH, 5000 Köln Electrode clamping device for electro-remelting plant - has independent adjustment drives for orienting electrode with respect to carrier
ATA814479A (en) * 1979-02-15 1995-01-15 Leybold Heraeus Gmbh & Co Kg ELECTRODE CLAMPING DEVICE FOR ELECTRODE REEL MELTING PLANTS
AT367668B (en) * 1979-07-26 1982-07-26 Sp Pk I T Bjuro Elektrotermich ELECTRIC SLAG MELTING SYSTEM
JPS6320151A (en) * 1986-07-14 1988-01-27 Daido Steel Co Ltd Ingot cutting receiving device for electro-slag remelting furnace
JPS6442531A (en) * 1987-08-07 1989-02-14 Nippon Kokan Kk Arc melting apparatus
CN2213593Y (en) * 1994-12-28 1995-11-29 机械工业部沈阳铸造研究所 Founding device of thin-wall variable camber blade slab electroslag
AT406384B (en) * 1996-01-29 2000-04-25 Inteco Int Techn Beratung METHOD FOR ELECTROSHELL STRAND MELTING OF METALS
DE19839432C2 (en) 1998-08-29 2000-12-07 Ald Vacuum Techn Ag Electric melting system
JP4654850B2 (en) * 2005-09-09 2011-03-23 大同特殊鋼株式会社 Attaching the stub to the electrode used in the remelting furnace
JP4535097B2 (en) * 2007-08-16 2010-09-01 大同特殊鋼株式会社 Power supply device for consumable electrode melting furnace
US8689856B1 (en) * 2013-03-05 2014-04-08 Rti International Metals, Inc. Method of making long ingots (cutting in furnace)

Non-Patent Citations (1)

* Cited by examiner, † Cited by third party
Title
None *

Also Published As

Publication number Publication date
SI3328576T1 (en) 2019-11-29
DE102015117661A1 (en) 2017-02-02
CN108136493A (en) 2018-06-08
RU2689832C1 (en) 2019-05-29
EP3328576A1 (en) 2018-06-06
WO2017016549A1 (en) 2017-02-02
JP2018522739A (en) 2018-08-16
US20180207719A1 (en) 2018-07-26

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