EP0192046A1 - Metallurgical installation comprising a portal-like structure - Google Patents

Metallurgical installation comprising a portal-like structure Download PDF

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Publication number
EP0192046A1
EP0192046A1 EP86100523A EP86100523A EP0192046A1 EP 0192046 A1 EP0192046 A1 EP 0192046A1 EP 86100523 A EP86100523 A EP 86100523A EP 86100523 A EP86100523 A EP 86100523A EP 0192046 A1 EP0192046 A1 EP 0192046A1
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EP
European Patent Office
Prior art keywords
guide columns
guide
metallurgical plant
plant according
portal
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.)
Granted
Application number
EP86100523A
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German (de)
French (fr)
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EP0192046B1 (en
Inventor
Otto Dr. Stenzel
Alfred Henn
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.)
Balzers und Leybold Deutschland Holding AG
Original Assignee
Leybold AG
Leybold Heraeus GmbH
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.)
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Publication date
Application filed by Leybold AG, Leybold Heraeus GmbH filed Critical Leybold AG
Priority to AT86100523T priority Critical patent/ATE38530T1/en
Publication of EP0192046A1 publication Critical patent/EP0192046A1/en
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Publication of EP0192046B1 publication Critical patent/EP0192046B1/en
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    • 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
    • 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 metallurgical plant with a portal-like frame with vertical supports and a plurality of vertical guide columns supported by the supports, each with a vertically movable electrode holder for receiving heating electrodes and with a melt container that can be moved into the portal.
  • the object is achieved in the metallurgical system described above according to the invention in that the frame has two platforms and that the upper ends of the guide columns are mounted in the upper platform and the lower ends of the guide columns in the lower platform.
  • each platform or reference level represents a self-contained force system that does not transmit any transverse forces to the supports. Due to the statically determined bilateral mounting of the guide columns, these can be achieved with a significantly lower section modulus, i.e. Run "leaner", which contributes to a considerable saving in material and thus weight.
  • the slim design of the guide columns and thus the frame ensures good access to the entire area around the electrodes and the melt container.
  • the invention is used in a particularly advantageous manner in so-called ladle furnaces in which metallurgical reactions are carried out by means of three permanent electrodes made of graphite.
  • Such furnaces usually have a furnace cover with holes for the entry of the electrodes, which despite their gradual consumption are referred to as permanent electrodes.
  • the design of the oven frame as a "portal" enables the ladle oven to be retracted into the frame in the usual way, i.e. under the lowest platform.
  • the attachment of the guide columns between two platforms above the melt container enables the guide columns to be moved closer together, since the distance between the guide columns is no longer determined by the freedom of movement of the melt container.
  • the resonance vibrations of the support arms are far away from the electromechanical forces occurring at the mains frequency.
  • the length of the high-current feed lines can also be limited by placing them between two support arms, so that low losses occur.
  • the two platforms consist of congruent frame structures. Details are explained in more detail with reference to FIG 2.
  • the upper ends of the guide columns can be adjusted in the radial direction to the axis of the melt container about pivot bearings which are arranged in the lower platform.
  • the electrodes can be inclined to one another in such a way that a smaller pitch circle diameter for the electrode axes is achieved at the level of the bath in the melt container and that a sufficiently large cross section of the lid material remains between the electrodes at the level of the lid.
  • a portal-like frame 1 is shown with vertical supports 2, which are connected to one another in two levels by two platforms 3 and 4.
  • the supports 2 are formed continuously from bottom to top and integrated into the platforms, as shown in particular in FIG. 2.
  • the platforms consist of congruent frame structures which are constructed in the manner indicated, which is to be evaluated to scale.
  • An outer, rectangular frame consists of profiles 5 and 6, which are welded together at the corners.
  • Three further inner profiles 7, 8 and 9 run parallel to the profiles 6, and between the inner profiles 8 and 9 in turn - parallel to the profiles 5 - two further inner profiles 10 and 11.
  • the profiles 7/8, 5/10 and 5 / 11 are in turn connected by cross members 12, 13 and 14 arranged in pairs and parallel to one another, the center planes between the cross members being aligned at an angle of 120 degrees to one another.
  • Each of the guide columns 15 to 17 carries a carriage 21 which can be moved on the guide column and has a radially inwardly directed electrode support arm 22 which carries at its inner end an electrode holder 23 into which the electrode 24 described above is inserted.
  • the melt container 20 which can also be referred to as a pan, is inserted by means of a belt 25 and two unspecified diametrical bearing journals into corresponding receptacles 26 of a chassis 27, which with the help of wheels 28 on rails 29 under the lowest platform 3 into the portal-like one Frame 1 is retractable and in the operating position the position shown in Figures 1 and 2 occupies.
  • the melt container 20 has a cover 30 with corresponding openings for the passage of the electrodes 24. The cover 30 can be lifted off by means of a lifting device (not specified) and attached to the platform 3.
  • the electrode support arms are equipped with clamping jaws, guide elements, spring assemblies and actuation devices such as pneumatic cylinders for opening the clamping jaws.
  • the two platforms have a larger cutout in the area above the melt container 20.
  • the electrodes as shown
  • the suction line As can be seen from FIG. 2, the two platforms have a larger cutout in the area above the melt container 20.
  • the electrodes as shown
  • the suction line As can be seen from FIG. 2, the two platforms have a larger cutout in the area above the melt container 20.
  • the electrodes as shown
  • the suction line As can be seen from FIG. 2, the two platforms have a larger cutout in the area above the melt container 20.
  • a measuring lance As can be seen from FIG. 2, the two platforms have a larger cutout in the area above the melt container 20.
  • the cutout in the upper platform serves for the exchange and attachment of further electrode sections, the attachment of new electrode sections taking place in a conventional manner by nipples which have the shape of threaded double cones (DE-OS 30 43 318).
  • FIG. 1 also shows the manner in which the slides 21 are raised and lowered: inside the hollow guide column there is a pressure medium cylinder 31 with a piston rod 32 and a rope pulley 33.
  • Another rope pulley 34 is located in the upper end of the respective guide column - Festi g t, which has a boom 35 for the purpose of cantilevered mounting of the pulley 34. Due to the dash-dotted guidance of a rope 36 and the attachment of this rope to the carriage 21, this carriage can be lowered or raised by twice the amount that the piston rod 32 is moved in the corresponding opposite direction.
  • the accommodation of the lifting drive for the electrodes in the guide columns results in a very clear structure in connection with complete protection of the pressure medium drive.
  • the guide column 16 (which also represents the guide columns 15 and 17) consists of a tube 16a to which U-shaped box sections 16b are welded on diametrically opposite sides. In this way, cavities 16c and 16d are formed on both sides of the tube 16a, which can serve for the forward and return conduction of a coolant.
  • the pressure medium cylinder 31 is completely protected in this way inside the tube 16a housed.
  • Vertical guide rails 37 are fastened on the opposite outer sides of the box profiles 16b, on which guide rollers 40 roll in a V-shaped arrangement, which are connected via bearing bodies 38 to a frame 39 which forms the outer part of each guide slide 21. Due to the V-shaped arrangement of the guide rollers 40, only four guide systems are required per guide level. This means a considerably reduced effort compared to the usual guides with eight rollers per guide level for furnaces with similar furnace flows.
  • the position of the electrode support arm 22 is only indicated.

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  • Engineering & Computer Science (AREA)
  • Chemical & Material Sciences (AREA)
  • Physics & Mathematics (AREA)
  • Plasma & Fusion (AREA)
  • Materials Engineering (AREA)
  • Metallurgy (AREA)
  • Organic Chemistry (AREA)
  • Furnace Details (AREA)
  • Vertical, Hearth, Or Arc Furnaces (AREA)
  • Rod-Shaped Construction Members (AREA)

Abstract

1. Metallurgical installation comprising a portal-like structure with vertical supports and a plurality of vertical guide columns carried by the supports, each with a vertically movable electrode holder for accommodating heating electrodes, and a melting vessel which can be introduced into the portal, characterized in that the structure (1) has two platforms (3, 4), and in that the upper ends of the guide columns are mounted in the upper platform (4) and the lower ends of the guide columns are mounted in the lower platform (3).

Description

Die Erfindung betrifft eine metallurgische Anlage mit einem portalähnlichen Gestell mit senkrechten Stützen und mehreren, von den Stützen getragenen senkrechten Führungssäulen mit je einem senkrecht verfahrbaren Elektrodenhalter für die Aufnahme von Heizelektroden sowie mit einem in das Portal einfahrbaren Schmelzenbehälter.The invention relates to a metallurgical plant with a portal-like frame with vertical supports and a plurality of vertical guide columns supported by the supports, each with a vertically movable electrode holder for receiving heating electrodes and with a melt container that can be moved into the portal.

Durch die DE-OS 20 24 788 ist eine derartige metallurgische Anlage für das Elektroschlacke-Umschmelzen von Abschmelzelektroden bekannt, bei dem die in zwei Koordinaten verfahrbaren Führungssäulen hängend an einem System von Laufwagen befestigt sind. Da die Elektroden mit den Elektrodenhaltern notwendigerweise einen erheblichen seitlichen Abstand von den Führungssäulen aufweisen, muß eine sehr aufwendige und komplizierte Führung der in horizontaler Richtung kreuzweise verfahrbaren Laufwagen angewandt werden, um eine ungewollte Schiefstellung der Führungssäulen zu vermeiden. Hierbei ist es nicht möglich, die Hebelwirkung der Elektroden, die mit ihren Elektrodenhaltern an sogenannten Elektrodentragarmen befestigt sind, durch Gegengewichte zu kompensieren, weil sich das Gewicht der Abschmelzelektroden laufend ändert. Der zu treibende Aufwand für die stabile Aufhängung der Führungssäulen ist daher nicht für alle Anwendungsfälle tragbar.From DE-OS 20 24 788 such a metallurgical plant for the electro-slag remelting of melting electrodes is known, in which the movable guide columns in two coordinates hanging on a system of carriages are attached. Since the electrodes with the electrode holders necessarily have a considerable lateral distance from the guide columns, a very complex and complicated guidance of the carriages which can be moved in a crosswise direction in the horizontal direction must be used in order to avoid an undesired misalignment of the guide columns. It is not possible to compensate for the leverage effect of the electrodes, which are attached to so-called electrode support arms with their electrode holders, by counterweights, because the weight of the consumable electrodes is constantly changing. The effort to be made for the stable suspension of the guide columns is therefore not acceptable for all applications.

Durch die DE-AS 21 11 047 ist eine metallurgische Anlage bekannt, bei der die Führungssäulen mit ihren galgenartig ausladenden Elektrodentragarmen teleskopartig in Führungskörpern geführt sind. Auch_diese Ausführungsform macht eine sehr aufwendige Konstruktion der Führungssäulen erforderlich, da diese freitragend ausgeführt sind und je nach der jeweils ausgefahrenen Länge unterschiedlichstark auf Biegung beansprucht werden.From DE-AS 21 11 047 a metallurgical plant is known in which the guide columns with their gallows-like protruding electrode support arms are guided telescopically in guide bodies. This embodiment also requires a very complex construction of the guide columns, since they are designed to be self-supporting and, depending on the extended length, are subjected to varying degrees of bending stress.

Der Erfindung liegt daher die Aufgabe zugrunde, eine metallurgische Anlage der eingangs beschriebenen Gattung anzugeben, die ein verhältnismäßig leichtes Gestell mit schlanken Führungssäulen aufweist, die nicht übermäßig von Biegekräften beansprucht werden.The invention is therefore based on the object of specifying a metallurgical plant of the type described at the outset, which has a relatively light frame has slender guide columns that are not excessively stressed by bending forces.

Die Lösung der gestellten Aufgabe erfolgt bei der eingangs beschriebenen metallurgischen Anlage erfindungsgemäß dadurch, daß das Gestell zwei Plattformen aufweist und daß die oberen Enden der Führungssäulen in der oberen Plattform und die unteren Enden der Führungssäulen in der unteren Plattform gelagert sind.The object is achieved in the metallurgical system described above according to the invention in that the frame has two platforms and that the upper ends of the guide columns are mounted in the upper platform and the lower ends of the guide columns in the lower platform.

Durch die beiden Plattformen, deren vertikaler Abstand der Länge der Führungssäulen entspricht, werden zwei Bezugsebenen geschaffen, in denen die Führungssäulen festgelegt sind. Infolgedessen stellt jede Plattform bzw. Bezugsebene ein in sich geschlossenes Kräftesystem dar, das keine Querkräfte auf die Stützen überträgt. Durch die statisch bestimmte beidseitige Lagerung der Führungssäulen lassen sich diese mit einem erheblich geringeren Widerstandsmoment, d.h. "schlanker" ausführen, was zu einer erheblichen Material- und damit Gewichtsersparung beiträgt. Durch die schlanke Ausführung der Führungssäulen und damit des Gestells wird eine gute Zugänglichkeit der gesamten Umgebung der Elektroden und des Schmelzenbehälters gewährleistet.The two platforms, the vertical spacing of which corresponds to the length of the guide columns, create two reference planes in which the guide columns are fixed. As a result, each platform or reference level represents a self-contained force system that does not transmit any transverse forces to the supports. Due to the statically determined bilateral mounting of the guide columns, these can be achieved with a significantly lower section modulus, i.e. Run "leaner", which contributes to a considerable saving in material and thus weight. The slim design of the guide columns and thus the frame ensures good access to the entire area around the electrodes and the melt container.

Die Erfindung findet in ganz besonders vorteilhafter Weise Anwendung bei sogenannten Pfannenöfen, in denen metallurgische Reaktionen mittels dreier aus Graphit bestehender Permanentelektroden durchgeführt werden. Derartige öfen besitzen üblicherweise einen Ofendeckel mit Löchern für den Eintritt der Elektroden, die trotz ihres allmählichen Verbrauchs als Permanentelektroden bezeichnet werden. Die Ausbildung des Ofengestells als "Portal" ermöglicht in üblicher Weise ein Einfahren des Pfannenofens in das Gestell, d.h. unter die unterste Plattform.The invention is used in a particularly advantageous manner in so-called ladle furnaces in which metallurgical reactions are carried out by means of three permanent electrodes made of graphite. Such furnaces usually have a furnace cover with holes for the entry of the electrodes, which despite their gradual consumption are referred to as permanent electrodes. The design of the oven frame as a "portal" enables the ladle oven to be retracted into the frame in the usual way, i.e. under the lowest platform.

Die Anbringung der Führungssäulen zwischen zwei Plattformen oberhalb des Schmelzenbehälters ermöglicht das engere Aneinanderrücken der Führungssäulen, da der Abstand der Führungssäulen nicht mehr durch den Bewegungsspielraum des Schmelzenbehälters.bestimmt wird. Dies führt wiederum zu sehr kurzen Elektrodentragarmen, die im Grunde nur noch aus dem Elektrodenhalter mit seinen Klemmbacken und aus den Betätigungsmechanismen bestehen. Dadurch liegen die Resonanzschwingungen der Tragarme weit abseits von den mit Netzfrequenz auftretenden elektromechanischen Kräften. Auch die Länge der Hochstromzuführungen läßt sich durch Unterbringung zwischen zwei Tragarmen begrenzen, so daß niedrige Verluste auftreten.The attachment of the guide columns between two platforms above the melt container enables the guide columns to be moved closer together, since the distance between the guide columns is no longer determined by the freedom of movement of the melt container. This in turn leads to very short electrode support arms, which basically consist only of the electrode holder with its clamping jaws and the actuating mechanisms. As a result, the resonance vibrations of the support arms are far away from the electromechanical forces occurring at the mains frequency. The length of the high-current feed lines can also be limited by placing them between two support arms, so that low losses occur.

Es ist dabei besonders vorteilhaft, wenn die beiden Plattformen aus kongruenten Rahmentragwerken bestehen. Einzelheiten werden dabei anhand der Figur 2 noch näher erläutert.It is particularly advantageous if the two platforms consist of congruent frame structures. Details are explained in more detail with reference to FIG 2.

Es ist schließlich besonders vorteilhaft, wenn die oberen Enden der Führungssäulen in radialer Richtung zur Achse des Schmelzenbehälters um Schwenklager verstellbar sind, die in der unteren Plattform angeordnet sind. Hierdurch lassen sich die Elektroden in der Weise zueinander neigen, daß in der Höhe des Badspiegels im Schmelzenbehälter ein kleinerer Teilkreisdurchmesser für die Elektrodenachsen erreicht wird und daß in Deckelhöhe ein ausreichend großer Querschnitt des Deckelmaterials zwischen den Elektroden verbleibt.Finally, it is particularly advantageous if the upper ends of the guide columns can be adjusted in the radial direction to the axis of the melt container about pivot bearings which are arranged in the lower platform. As a result, the electrodes can be inclined to one another in such a way that a smaller pitch circle diameter for the electrode axes is achieved at the level of the bath in the melt container and that a sufficiently large cross section of the lid material remains between the electrodes at the level of the lid.

Weitere vorteilhafte Ausgestaltungen ergeben sich aus den übrigen Unteransprüchen.Further advantageous configurations result from the remaining subclaims.

Ein Ausführungsbeispiel des Erfindungsgegenstandes wird nachfolgend anhand der Figuren 1 bis 3 näher erläutert.An embodiment of the subject matter of the invention is explained in more detail below with reference to FIGS. 1 to 3.

Es zeigen:

  • Figur 1 eine Seitenansicht einer vollständigen metallurgischen Anlage,
  • FigLr 2 eine Draufsicht auf den Gegenstand von Figur 1 und
  • Figur 3 einen Querschnitt entlang der Linie III-III in Figur 1 in vergrößertem Maßstab.
Show it:
  • FIG. 1 shows a side view of a complete metallurgical plant,
  • Fig L r 2 is a plan view of the subject of Figure 1 and
  • 3 shows a cross section along the line III-III in Figure 1 on an enlarged scale.

In Figur 1 ist ein portalähnliches Gestell 1 mit senkrechten Stützen 2 dargestellt, die in zwei Ebenen durch zwei Plattformen 3 und 4 miteinander verbunden sind. Dabei sind die Stützen 2 von unten nach oben durchgehend ausgebildet und in die Plattformen integriert, wie insbesondere Figur 2 zeigt.In Figure 1, a portal-like frame 1 is shown with vertical supports 2, which are connected to one another in two levels by two platforms 3 and 4. The supports 2 are formed continuously from bottom to top and integrated into the platforms, as shown in particular in FIG. 2.

Gemäß Figur 2 bestehen die Plattformen aus kongruenten Rahmentragwerken, die in der angegebenen, maßstäblich zu wertenden Weise aufgebaut sind. Ein äußerer, rechteckiger Rahmen besteht aus den Profilen 5 und 6, die an den Ecken miteinander verschweißt sind. Parallel zu den Profilen 6 verlaufen drei weitere Innenprofile 7, 8 und 9, und zwischen den Innenprofilen 8 und 9 erstrecken sich wiederum - parallel zu den Profilen 5 - zwei weitere Innenprofile 10 und 11. Die Profile 7/8, 5/10 und 5/11 sind wiederum durch paarweise und parallel zueinander angeordnete Traversen 12, 13 und 14 verbunden, wobei die Mittenebenen zwischen den Traversen unter einem Winkel von 120 Grad zueinander ausgerichtet sind.According to FIG. 2, the platforms consist of congruent frame structures which are constructed in the manner indicated, which is to be evaluated to scale. An outer, rectangular frame consists of profiles 5 and 6, which are welded together at the corners. Three further inner profiles 7, 8 and 9 run parallel to the profiles 6, and between the inner profiles 8 and 9 in turn - parallel to the profiles 5 - two further inner profiles 10 and 11. The profiles 7/8, 5/10 and 5 / 11 are in turn connected by cross members 12, 13 and 14 arranged in pairs and parallel to one another, the center planes between the cross members being aligned at an angle of 120 degrees to one another.

Zwischen den Traversen befinden sich Führungssäulen 15, 16 und 17. Dabei sind die oberen Enden dieser Führungssäulen mittels der genannten Traversen in der oberen Plattform 4 und die unteren Enden der Führungssäulen in der unteren Plattform 3 gelagert, wie sich dies aus Figur 1 ergibt. Die unteren Enden der Führungssäulen sind dabei in Schwenklagern 18 innerhalb der unteren Plattform 3 gelagert. Von diesen Schwenklagern ist in Figur 1 nur eines dargestellt. Diese Schwenklager ermöglichen es, die oberen Enden der Führungssäulen in radialer Richtung innerhalb der oberen Plattform 4 zu verschwenken, wie dies durch den Doppelpfeil 19 symbolisiert ist. Die "radiale Richtung" ist dabei jeweils auf die Achse des Schmelzenbehälters 20 bezogen, wie sich dies unschwer aus Figur 2 ergibt.There are guide columns 15, 16 and 17 between the traverses. The upper ends of these guide columns are in the upper platform 4 by means of the mentioned traverses and the lower ends of the guide columns are in the lower platform 3, as shown in Figure 1. The lower ends of the guide columns are mounted in pivot bearings 18 within the lower platform 3. Only one of these pivot bearings is shown in FIG. 1. These pivot bearings make it possible to pivot the upper ends of the guide columns in the radial direction within the upper platform 4, as is symbolized by the double arrow 19. The “radial direction” is in each case related to the axis of the melt container 20, as can be easily seen in FIG. 2.

Jede der Führungssäulen 15 bis 17 trägt einen auf der Führungssäule verfahrbaren Schlitten 21 mit einem radial einwärts gerichteten Elektrodentragarm 22, der an seinem inneren Ende einen Elektrodenhalter 23 trägt, in den die weiter oben beschriebene Elektrode 24 eingesetzt ist.Each of the guide columns 15 to 17 carries a carriage 21 which can be moved on the guide column and has a radially inwardly directed electrode support arm 22 which carries at its inner end an electrode holder 23 into which the electrode 24 described above is inserted.

Der Schmelzenbehälter 20, der auch als Pfanne bezeichnet werden kann, ist mittels eines Gurtes 25 und zwei nicht näher bezeichnete diametrale Lagerzapfen in entsprechende Aufnahmen 26 eines Fahrgestells 27 eingesetzt, das mit Hilfe von Rädern 28 auf Schienen 29 unter die unterste Plattform 3 in das portalähnliche Gestell 1 einfahrbar ist und in Betriebsstellung die in den Figuren 1 und 2 gezeigte Position einnimmt. Der Schmelzenbehälter 20 besitzt einen Deckel 30 mit entsprechenden öffnungen für den Durchtritt der Elektroden 24. Der Deckel 30 ist mittels einer nicht näher bezeichneten und an der Plattform 3 befestigten Hubeinrichtung abhebbar.The melt container 20, which can also be referred to as a pan, is inserted by means of a belt 25 and two unspecified diametrical bearing journals into corresponding receptacles 26 of a chassis 27, which with the help of wheels 28 on rails 29 under the lowest platform 3 into the portal-like one Frame 1 is retractable and in the operating position the position shown in Figures 1 and 2 occupies. The melt container 20 has a cover 30 with corresponding openings for the passage of the electrodes 24. The cover 30 can be lifted off by means of a lifting device (not specified) and attached to the platform 3.

Einzelheiten der Elektrodenhalter 23 sind an sich bekannt. In aller Regel sind die Elektrodentragarme mit Klemmbacken, Führungselementen, Federpaketen und Betätigungseinrichtungen wie Pneumatikzylinder zum öffnen der Klemmbacken ausgestattet.Details of the electrode holder 23 are known per se. As a rule, the electrode support arms are equipped with clamping jaws, guide elements, spring assemblies and actuation devices such as pneumatic cylinders for opening the clamping jaws.

Wie aus Figur 2 ersichtlich, besitzen die beiden Plattformen im Bereich oberhalb des Schmelzenbehälters 20 einen größeren Ausschnitt. Durch den Ausschnitt in der unteren Plattform 3 führen die Elektroden (wie gezeigt), die Absaugleitung, eine Meßlanze und eine Einrichtung zur Chargierung (jeweils nicht gezeigt) zum Deckel 30.As can be seen from FIG. 2, the two platforms have a larger cutout in the area above the melt container 20. Through the cutout in the lower platform 3, the electrodes (as shown), the suction line, a measuring lance and a charging device (not shown in each case) lead to the cover 30.

Der Ausschnitt in der oberen Plattform dient zum Auswechseln und Ansetzen weiterer Elektrodenabschnitte, wobei das Ansetzen neuer Elektrodenabschnitte in herkömmlicher Weise durch Nippel geschieht, die die Form von mit Gewinde versehenen Doppelkegeln aufweisen (DE-OS 30 43 318).The cutout in the upper platform serves for the exchange and attachment of further electrode sections, the attachment of new electrode sections taking place in a conventional manner by nipples which have the shape of threaded double cones (DE-OS 30 43 318).

Figur 1 zeigt noch, in welcher Weise das Anheoen und Absenken der Schlitten 21 geschieht: Im Innern der hohl ausgebildeten Führungssäule befindet sich ein Druckmittelzylinder 31 mit einer Kolbenstange 32 und einer Seilrolle 33. Eine weitere Seilrolle 34, ist im oberen Ende der jeweiligen Führungssäule be- festigt, die zum Zwecke einer ausladenden Lagerung der Seilrolle 34 einen Ausleger 35 besitzt. Durch die strichpunktiert angedeutete Führung eines Seils 36 und die Befestigung dieses Seils an dem Schlitten 21, läßt sich dieser Schlitten um das doppelte Maß absenken oder anheben, wie die Kolbenstange 32 in der entsprechenden Gegenrichtung bewegt wird. Durch die Unterbringunc des Hubantriebes für die Elektroden in den Führungssäulen ergibt sich ein sehr übersichtlicher Aufbau in Verbindung mit einem vollständigen Schutz des Druckmittelantriebs.FIG. 1 also shows the manner in which the slides 21 are raised and lowered: inside the hollow guide column there is a pressure medium cylinder 31 with a piston rod 32 and a rope pulley 33. Another rope pulley 34 is located in the upper end of the respective guide column - Festi g t, which has a boom 35 for the purpose of cantilevered mounting of the pulley 34. Due to the dash-dotted guidance of a rope 36 and the attachment of this rope to the carriage 21, this carriage can be lowered or raised by twice the amount that the piston rod 32 is moved in the corresponding opposite direction. The accommodation of the lifting drive for the electrodes in the guide columns results in a very clear structure in connection with complete protection of the pressure medium drive.

In Figur 3 ist dargestellt, daß die Führungssäule 16 (die stellvertretend auch für die Führungssäulen 15 und 17 steht) aus einem Rohr 16a besteht, auf das an diametral gegenüberliegenden Seiten U-förmige Kastenprofile 16b angeschweißt sind. Hierdurch werden auf beiden Seiten des Rohres 16a Hohlräume 16c und 16d gebildet, die für die Hin- und Rückleitung eines Kühlmittels dienen können. Der Druckmittelzylinder 31 ist auf diese Weise völlig geschützt im Innern des Rohres 16a untergebracht. Auf den gegenüberliegenden Außenseiten der Kastenprofile 16b sind vertikale Führungsschienen 37 befestigt, auf denen sich Führungsrollen 40 in V-förmiger Anordnung abwälzen, die über Lagerkörper 38 mit einem Rahmen 39 verbunden sind, der den äußeren Teil eines jeden Führungsschlittens 21 bildet. Durch die V-förmige Anordnung der Führungsrollen 40 werden nur vier Führungssysteme je Führungsebene benötigt. Dies bedeutet einen erheblich reduzierten Aufwand gegenüber den üblichen Führungen mit acht Rollen je Führungsebene bei öfen mit ähnlichen Ofenströmen. Die Lage des Elektrodentragarmes 22 ist nur angedeutet.In Figure 3 it is shown that the guide column 16 (which also represents the guide columns 15 and 17) consists of a tube 16a to which U-shaped box sections 16b are welded on diametrically opposite sides. In this way, cavities 16c and 16d are formed on both sides of the tube 16a, which can serve for the forward and return conduction of a coolant. The pressure medium cylinder 31 is completely protected in this way inside the tube 16a housed. Vertical guide rails 37 are fastened on the opposite outer sides of the box profiles 16b, on which guide rollers 40 roll in a V-shaped arrangement, which are connected via bearing bodies 38 to a frame 39 which forms the outer part of each guide slide 21. Due to the V-shaped arrangement of the guide rollers 40, only four guide systems are required per guide level. This means a considerably reduced effort compared to the usual guides with eight rollers per guide level for furnaces with similar furnace flows. The position of the electrode support arm 22 is only indicated.

Aus Figur 1 ergibt sich wiederum, daß bei einer radialen Verschwenkung des oberen Endes der Führungssäule 16 nach außen, d.h. in Richtung auf den rechten Blattrand die zugehörige Elektrode 24 eine Schwenkbewegung um den gleichen Winkel ausführt. Dies führt dazu, daß sich die Elektrode 24 im Bereich ihres Durchgangs durch den Deckel 30 nur in geringem Maße radial nach außen bewegt, da das Schwenklager 18 nur in geringem Abstand oberhalb des Deckels 30 angeordnet ist. Das untere Ende der Elektrode 24 führt jedoch eine Schwenkbewegung mit zwar gleichem Drehsinn, aber in entgegengesetzter Richtung aus, nämlich radial nach innen. Da die radiale Verschwenkung in gleichem Maße für alle Führungssäulen durchgeführt werden, bewegen sich die Elektrodenachsen im Bereich des Schmelzenspiegels, den man sich etwa im Bereich des Gurtes 25 denken kann, in Richtung auf einen kleineren Teilkreis.From Figure 1 it again emerges that when the upper end of the guide column 16 is pivoted radially outwards, i. in the direction of the right sheet edge, the associated electrode 24 pivots by the same angle. This leads to the electrode 24 only moving radially outward in the region of its passage through the cover 30, since the pivot bearing 18 is only arranged a short distance above the cover 30. However, the lower end of the electrode 24 pivots with the same direction of rotation, but in the opposite direction, namely radially inwards. Since the radial pivoting is carried out to the same extent for all guide columns, the electrode axes move in the area of the melt level, which can be imagined in the area of the belt 25, towards a smaller pitch circle.

Claims (8)

1. Metallurgische Anlage mit einem portalähnlichen Gestell mit senkrechten Stützen und mehreren, von den Stützen getragenen senkrechten Führungssäulen mit je einem senkrecht verfahrbaren Elektrodenhalter für die Aufnahme von Heizelektroden sowie mit einem in das Portal einfahrbaren Schmelzenbehälter, dadurch gekennzeichnet, daß das Gestell (1) zwei Plattformen (3, 4) aufweist, und daß die oberen Enden der Führungssäulen in der oberen Plattform (4) und die unteren Enden der Führungssäulen in der unteren Plattform (3) gelagert sind.1. Metallurgical plant with a portal-like frame with vertical supports and a plurality of vertical guide columns supported by the supports, each with a vertically movable electrode holder for receiving heating electrodes and with a melt container that can be moved into the portal, characterized in that the frame (1) has two Platforms (3, 4), and that the upper ends of the guide columns in the upper platform (4) and the lower ends of the guide columns in the lower platform (3) are mounted. 2. Metallurgische Anlage nach Anspruch 1, dadurch gekennzeichnet, daß die Plattformen (3, 4) aus kongruenten Rahmentragwerken bestehen.2. Metallurgical plant according to claim 1, characterized in that the platforms (3, 4) consist of congruent frame structures. 3. Metallurgische Anlage nach Anspruch 2, dadurch gekennzeichnet, daß die senkrechten Stützen (2) in die Plattformen (3, 4) integriert sind.3. Metallurgical plant according to claim 2, characterized in that the vertical supports (2) in the platforms (3, 4) are integrated. 4. Metallurgische Anlage nach Anspruch 1, dadurch gekennzeichnet, daß die oberen Enden der Führungssäulen (15, 16, 17) in radialer Richtung zur Achse des Schmelzenbehälters (20) um in der unteren Plattform (3) angeordnete Schwenklager (18) verstellbar sind.4. Metallurgical plant according to claim 1, characterized in that the upper ends of the guide columns (15, 16, 17) in the radial direction to the axis of the melt container (20) in the lower platform (3) arranged pivot bearing (18) are adjustable. 5. Metallurgische Anlage nach Anspruch 1, dadurch gekennzeichnet, daß die Führungssäulen (15, 16, 17) als Hohlkörper ausgebildet sind und daß in ihnen je ein Druckmittelzylinder (31) für den Antrieb eines Seils (36) angeordnet ist, das zum Zwecke eines Hebens oder Senkens mit dem zugehörigen Schlitten (21) verbunden ist.5. Metallurgical plant according to claim 1, characterized in that the guide columns (15, 16, 17) are designed as hollow bodies and that a pressure medium cylinder (31) for driving a rope (36) is arranged in them, which for the purpose of a Lifting or lowering is connected to the associated carriage (21). 6. Metallurgische Anlage nach Anspruch 5, dadurch gekennzeichnet, daß die Führungssäulen (16) aus einem Rohr (16a) mit zwei seitlich angesetzten Kastenprofilen (16b) bestehen, in denen sich Hohlräume (16c, 16d) für die Hin- und Rückleitung eines Kühlmittels befinden.6. Metallurgical plant according to claim 5, characterized in that the guide columns (16) consist of a tube (16a) with two laterally attached box profiles (16b), in which there are cavities (16c, 16d) for the supply and return of a coolant are located. 7. Metallurgische Anlage nach Anspruch 6, dadurch gekennzeichnet, daß auf den Außenseiten der Kastenprofile (16b) Führungsschienen (37) für den Schlitten (21) befestigt sind.7. Metallurgical plant according to claim 6, characterized in that on the outer sides of the box profiles (16 b) guide rails (37) for the carriage (21) are attached. 8. Metallurgische Anlage nach Anspruch 7, dadurch gekennzeichnet, daß im Schlitten (21) auf die Führungs-schienen (37) ausgerichtete Rollen (40) angeordnet sind, deren Achsen paarweise V-förmig zueinander ausgerichtet sind.8. Metallurgical installation according to claim 7, characterized in that (37) aligned rollers (40) are arranged in the slide (21) to the Guide e g s-rails, the axes of pairs of V-shape are aligned with each other.
EP86100523A 1985-02-20 1986-01-16 Metallurgical installation comprising a portal-like structure Expired EP0192046B1 (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
AT86100523T ATE38530T1 (en) 1985-02-20 1986-01-16 METALLURGICAL PLANT WITH A PORTAL-LIKE FRAME.

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE3505816 1985-02-20
DE19853505816 DE3505816A1 (en) 1985-02-20 1985-02-20 METALLURGICAL SYSTEM WITH A PORTAL-LIKE BASE

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EP0192046A1 true EP0192046A1 (en) 1986-08-27
EP0192046B1 EP0192046B1 (en) 1988-11-09

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EP86100523A Expired EP0192046B1 (en) 1985-02-20 1986-01-16 Metallurgical installation comprising a portal-like structure

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EP (1) EP0192046B1 (en)
AT (1) ATE38530T1 (en)
DE (2) DE3505816A1 (en)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO1988004128A1 (en) * 1986-11-26 1988-06-02 Mannesmann Ag Electrode support device

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Publication number Priority date Publication date Assignee Title
DE1813478A1 (en) * 1967-12-14 1969-07-03 Ver Edeistahlwerke Ag Vew Verk Plant for the production of blocks of different sizes during the electroslag remelting of metals, especially steel
DE2111047B2 (en) * 1971-03-09 1975-08-07 Leybold-Heraeus Gmbh & Co Kg, 5000 Koeln
FR2454469A1 (en) * 1979-04-17 1980-11-14 Inst Elektroswarki Patona Multi-electrode furnace, for electroslag remelting of metals - where L=shaped electrode holders can be swivelled on vertical axes to adjust horizontal position of electrodes in mould

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DE192435C (en) *
AT97103B (en) * 1920-08-23 1924-06-10 Davide Mauri Three-phase electric oven.
US1792293A (en) * 1928-04-30 1931-02-10 Flodin Henning Gustav Means for regulating the electrodes in reversible electric furnaces
DE1057151B (en) * 1957-02-04 1959-05-14 Demag Elektrometallurgie Gmbh Electric arc furnace with full portal
AT294335B (en) * 1969-05-27 1971-11-25 Boehler & Co Ag Geb Plant for the production of large ingots in the electroslag remelting of metals, especially steels
SE377375B (en) * 1971-12-01 1975-06-30 Asea Ab

Patent Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE1813478A1 (en) * 1967-12-14 1969-07-03 Ver Edeistahlwerke Ag Vew Verk Plant for the production of blocks of different sizes during the electroslag remelting of metals, especially steel
DE2111047B2 (en) * 1971-03-09 1975-08-07 Leybold-Heraeus Gmbh & Co Kg, 5000 Koeln
FR2454469A1 (en) * 1979-04-17 1980-11-14 Inst Elektroswarki Patona Multi-electrode furnace, for electroslag remelting of metals - where L=shaped electrode holders can be swivelled on vertical axes to adjust horizontal position of electrodes in mould

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO1988004128A1 (en) * 1986-11-26 1988-06-02 Mannesmann Ag Electrode support device

Also Published As

Publication number Publication date
EP0192046B1 (en) 1988-11-09
ATE38530T1 (en) 1988-11-15
DE3505816A1 (en) 1986-08-21
DE3661141D1 (en) 1988-12-15

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