EP0480202B1 - Shut-off and/or control mechanism for the outlet of a vessel containing metal - Google Patents

Shut-off and/or control mechanism for the outlet of a vessel containing metal Download PDF

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Publication number
EP0480202B1
EP0480202B1 EP91115608A EP91115608A EP0480202B1 EP 0480202 B1 EP0480202 B1 EP 0480202B1 EP 91115608 A EP91115608 A EP 91115608A EP 91115608 A EP91115608 A EP 91115608A EP 0480202 B1 EP0480202 B1 EP 0480202B1
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EP
European Patent Office
Prior art keywords
closure
drive rod
internal space
control device
cross
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Expired - Lifetime
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EP91115608A
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German (de)
French (fr)
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EP0480202A1 (en
Inventor
Raimund Brückner
Ullrich Hintzen
Steve Lee
Andreas Schuler
Martin Wiesel
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Didier Werke AG
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Didier Werke AG
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Priority to AT91115608T priority Critical patent/ATE92383T1/en
Publication of EP0480202A1 publication Critical patent/EP0480202A1/en
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Classifications

    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B22—CASTING; POWDER METALLURGY
    • B22D—CASTING OF METALS; CASTING OF OTHER SUBSTANCES BY THE SAME PROCESSES OR DEVICES
    • B22D41/00—Casting melt-holding vessels, e.g. ladles, tundishes, cups or the like
    • B22D41/14—Closures
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B22—CASTING; POWDER METALLURGY
    • B22D—CASTING OF METALS; CASTING OF OTHER SUBSTANCES BY THE SAME PROCESSES OR DEVICES
    • B22D11/00—Continuous casting of metals, i.e. casting in indefinite lengths
    • B22D11/10—Supplying or treating molten metal
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B22—CASTING; POWDER METALLURGY
    • B22D—CASTING OF METALS; CASTING OF OTHER SUBSTANCES BY THE SAME PROCESSES OR DEVICES
    • B22D41/00—Casting melt-holding vessels, e.g. ladles, tundishes, cups or the like
    • B22D41/14—Closures
    • B22D41/16—Closures stopper-rod type, i.e. a stopper-rod being positioned downwardly through the vessel and the metal therein, for selective registry with the pouring opening
    • B22D41/18—Stopper-rods therefor

Definitions

  • the invention relates to a closure and / or control device for the pouring of a metallurgical vessel, a drive rod extending in the interior of a rotatable, fire-resistant, ceramic closure and / or control member, the outer end of which is connected to a drive unit for the closure and / or control element can be coupled and its inner end engages in the interior of the closure and / or control element.
  • Such a closure and control device is described in WO 88/04 209.
  • Such a construction of the closure and control device is advantageous since it allows the drive rod to tilt in the closure and control member. As a result, angular errors do not lead to jamming in the rotary drive. It is also advantageous that torques do not have to be transmitted over the entire length of the closure and control element in the rotary drive. Overall, the kinematics in the rotary drive are advantageous.
  • the drive rod is mounted in the closure and control element by means of a ball head.
  • the closure and control element is free of bending forces when driving.
  • the connecting and regulating member can be raised and lowered by means of the drive rod. It is also rotatable.
  • the transmission of the rotary movement is structurally complex and affects the tiltability of the drive rod relative to the closure and control element.
  • closure and control device is described in DE 37 43 383 A1.
  • the closure and control element is only raised or lowered by means of the drive rod, but not rotated.
  • the drive rod engages with a ball head deep in the closure and control element, close to the outlet openings, on the closure and control element.
  • the drive rods are made of metal. It has been found that this is unfavorable since the metal melt present on the outside of the closure and regulating member generates a very high temperature in the interior thereof. In practice, this requires cooling of the drive rod. Such cooling is complex and can lead to dangerous conditions in the event of failure. In addition, the relatively large thermal expansion of the metallic drive rod is disadvantageous.
  • the object of the invention is to propose a closure and / or control device of the type mentioned, which can work without cooling the drive rod.
  • the above object is achieved in a closure and / or control device of the type mentioned at the outset in that the drive rod consists at least in its inner end region of a ceramic material in accordance with the characterizing part of the main claim.
  • the drive rod permanently withstands the high temperature prevailing in the interior, so that cooling of the drive rod is unnecessary.
  • the thermal expansion of the ceramic material of the drive rod is comparatively low and does not deviate significantly from the thermal expansion of the closure and / or control element, so that a compensation of the different thermal expansion is generally unnecessary.
  • a cylindrical outlet member 3 (stator) is attached at the bottom 1 of a metallurgical vessel 2.
  • the outlet member 3 has a lateral inlet opening 4 for the melt located in the vessel 2.
  • the bath level of the melt is designated 5.
  • a closure and control element 6 (rotor) is mounted in the outlet element 3.
  • the closure and control member 6 engages with its lower region 7 in the outlet member 3.
  • the closure and control member 6 is provided with a passage opening 8, which by rotating the closure and control member 6 about its longitudinal axis L with the Inlet opening 4 can be brought to cover.
  • the closure and control element 6 extends beyond the bath level 5. Above the lower area 7, it is provided with an interior space 9 open at the top. This is closed at its bottom 10.
  • the base 10 lies above a step 11 of the outer circumference of the closure and control element 6, with which it stands on an upper edge 12 of the outlet element 3.
  • a drive rod 13 extends in the interior 9. Its upper, outer end, which is not shown, is coupled to a drive unit with which the drive rod 13 can be rotated about its axis A.
  • a transmission element is provided according to Figure 1, which consists of a transmission block 14 and a cap 15.
  • the Dome 15 sits in a concave recess 16 of the base 10.
  • the drive rod 13 is mounted in the closure and control member so that the longitudinal axis L of the closure and control member 6 and the axis A of the drive rod 13 can be tilted towards each other. Due to this possible tilting of the drive rod 13 against the closure and control member 6, tolerances between the drive unit and the position of the outlet member 3 are compensated for so that the closure and control member 6 is freely supported in the outlet member 3 and can be driven.
  • the cross section Q of the interior 9 deviates from the circular shape. For example, it is square, polygonal or oval.
  • the transmission block 14 has a cross section q which is equal to the cross section Q of the interior 9. It is connected to the drive rod 13 in a rotationally fixed manner, so that when the drive rod 13 rotates about the axis A, the transmission block 14 of the closure and control element 6 is positively entrained so that it rotates about its longitudinal axis L. Avoid bulges on the outer periphery of the transmission block 14 so that the transmission block 14 prevents the possibility of tipping.
  • the transmission block 14 consists of a refractory ceramic, for example a ZrO2 or SiC ceramic.
  • the drive rod 13, the transmission block 14 and the spherical cap 15 can also form an integrally molded component made of ceramic material.
  • the latter preferably has approximately the same coefficient of thermal expansion, in particular for the transmission block 14, as the ceramic material of the closure and control element 6.
  • the drive rod 13 with transmission block 14 and cap 15 easily withstands the high temperature prevailing in the interior 9. It can continue to be used if the closure and control element 6 is worn and has to be replaced. Radial thermal expansions of the ceramic transmission block 14 to the longitudinal axis A are at most small, in any case not greater than thermal expansions of the closure and control element 6 in this area, so that there is no risk of damage to the closure and control element 6.
  • a depression 17 is formed on the base 10 of the interior 9. This has a cross-shaped cross-sectional profile.
  • the recess 17 tapers conically downwards.
  • the drive rod 13 has a cross-sectional profile corresponding to the cross-sectional profile of the recess 17. This engages with its lower, inner end in the recess 17. This ensures a rotationally fixed connection between the drive rod 13 and the closure and control element 6.
  • the cross section of the closure and control element 6 is annular.
  • the drive rod 13 consists of the ceramic described. But it can also consist of a ceramic material based on Al2O3 or Si3N4.
  • the drive rod 13 can advantageously be produced in slip casting, in continuous casting or by isostatic pressing. Both full profiles and hollow profiles can be used.
  • the drive rod 13 can also taper conically at its lower end region. However, this is not necessary. In any case, there is a free space 18 which allows the drive rod 13 to tilt with respect to the closure and control element 6.

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  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Furnace Charging Or Discharging (AREA)
  • Vertical, Hearth, Or Arc Furnaces (AREA)
  • Casting Support Devices, Ladles, And Melt Control Thereby (AREA)
  • Ceramic Products (AREA)
  • Waste-Gas Treatment And Other Accessory Devices For Furnaces (AREA)
  • Furnace Housings, Linings, Walls, And Ceilings (AREA)
  • Discharge Heating (AREA)
  • Cookers (AREA)
  • Closures For Containers (AREA)

Abstract

In a shut-off and/or control mechanism for the outlet of a metallurgical vessel, a driving rod (13) extends in an internal space (9) of a rotatable, refractory, ceramic shut-off and/or control element (6). Its outer end is connected to a unit for driving the shut-off and/or control element. In the internal space (9), its inner end region engages on the shut-off and/or control element (6). In order to permit the operation of the shut-off and/or control mechanism without cooling, the driving rod (13) is composed of a ceramic material, at least in its inner end region. <IMAGE>

Description

Die Erfindung betrifft eine Verschluß- und/oder Regeleinrichtung für den Ausguß eines metallurgischen Gefäßes, wobei sich in einem Innenraum eines drehbaren, feuerfesten, keramischen Verschluß- und/oder Regelorgans eine Antriebsstange erstreckt, deren äußeres Ende an ein Antriebsaggregat für das Verschluß- und/oder Regelorgan ankoppelbar ist und deren inneres Ende im Innenraum am Verschluß- und/oder Regelorgan angreift.The invention relates to a closure and / or control device for the pouring of a metallurgical vessel, a drive rod extending in the interior of a rotatable, fire-resistant, ceramic closure and / or control member, the outer end of which is connected to a drive unit for the closure and / or control element can be coupled and its inner end engages in the interior of the closure and / or control element.

Eine derartige Verschluß- und Regeleinrichtung ist in der WO 88/04 209 beschrieben. Ein solcher Aufbau der Verschluß- und Regeleinrichtung ist vorteilhaft, da er ein Kippen der Antriebsstange in dem Verschluß- und Regelorgan zuläßt. Dadurch führen Winkelfehler nicht zum Klemmen beim Drehantrieb. Günstig ist auch, daß beim Drehantrieb Drehmomente nicht über die gesamte Länge des Verschluß- und Regelorgans übertragen werden müssen. Insgesamt ist die Kinematik beim Drehantrieb vorteilhaft.Such a closure and control device is described in WO 88/04 209. Such a construction of the closure and control device is advantageous since it allows the drive rod to tilt in the closure and control member. As a result, angular errors do not lead to jamming in the rotary drive. It is also advantageous that torques do not have to be transmitted over the entire length of the closure and control element in the rotary drive. Overall, the kinematics in the rotary drive are advantageous.

Bei der WO 88/04 209 ist die Antriebsstange mittels eines Kugelkopfes im Verschluß- und Regelorgan gelagert. Dadurch ist das Verschluß- und Regelorgan beim Antrieb von Biegekräften frei. Das Vorschluß- und Regelorgan ist mittels der Antriebsstange heb- und senkbar. Es ist auch drehbar. Die Übertragung der Drehbewegung ist baulich aufwendig und beeinträchtigt die Kippbarkeit der Antriebsstange gegenüber dem Verschluß- und Regelorgan.In WO 88/04 209 the drive rod is mounted in the closure and control element by means of a ball head. As a result, the closure and control element is free of bending forces when driving. The connecting and regulating member can be raised and lowered by means of the drive rod. It is also rotatable. The transmission of the rotary movement is structurally complex and affects the tiltability of the drive rod relative to the closure and control element.

In der DE 37 43 383 A1 ist eine ähnliche Verschluß- und Regeleinrichtung beschrieben. Bei dieser wird das Verschluß- und Regelorgan mittels der Antriebsstange lediglich gehoben oder gesenkt, nicht jedoch gedreht. Auch hier greift die Antriebsstange mittels eines Kugelkopfes tief im Verschluß- und Regelorgan, nahe bei den Auslaßöffnungen, an dem Verschluß- und Regelorgan an.A similar closure and control device is described in DE 37 43 383 A1. In this, the closure and control element is only raised or lowered by means of the drive rod, but not rotated. Here, too, the drive rod engages with a ball head deep in the closure and control element, close to the outlet openings, on the closure and control element.

Nach dem Stand der Technik bestehen die Antriebsstangen aus Metall. Es wurde gefunden, daß dies ungünstig ist, da die außen am Verschluß- und Regelorgan anstehende Metallschmelze in dessen Innenraum eine sehr hohe Temperatur erzeugt. Diese macht in der Praxis eine Kühlung der Antriebsstange erforderlich. Eine solche Kühlung ist aufwendig und kann beim Ausfall zu gefährlichen Zuständen führen. Außerdem ist die verhältnismäßig große Wärmedehnung der metallischen Antriebsstange von Nachteil.According to the prior art, the drive rods are made of metal. It has been found that this is unfavorable since the metal melt present on the outside of the closure and regulating member generates a very high temperature in the interior thereof. In practice, this requires cooling of the drive rod. Such cooling is complex and can lead to dangerous conditions in the event of failure. In addition, the relatively large thermal expansion of the metallic drive rod is disadvantageous.

Aufgabe der Erfindung ist es, eine Verschluß- und/oder Regeleinrichtung der eingangs genannten Art vorzuschlagen, die ohne Kühlung der Antriebsstange arbeiten kann.The object of the invention is to propose a closure and / or control device of the type mentioned, which can work without cooling the drive rod.

Erfindungsgemäß ist obige Aufgabe bei einer Verschluß- und/oder Regeleinrichtung der eingangs genannten Art dadurch gelöst, daß die Antriebsstange mindestens in ihrem inneren Endbereich aus einem keramischen Material besteht gemäß dem kennzeichnenden Teil des Hauptanspruchs.According to the invention, the above object is achieved in a closure and / or control device of the type mentioned at the outset in that the drive rod consists at least in its inner end region of a ceramic material in accordance with the characterizing part of the main claim.

Die Antriebsstange hält der im Innenraum herrschenden hohen Temperatur dauerhaft stand, so daß sich eine Kühlung der Antriebsstange erübrigt. Die Wärmedehnung des keramischen Materials der Antriebsstange ist vergleichsweise gering und weicht nicht wesentlich von der Wärmedehnung des Verschluß- und/oder Regelorgans ab, so daß in der Regel eine Kompensation der unterschiedlichen Wärmedehnung entbehrlich ist.The drive rod permanently withstands the high temperature prevailing in the interior, so that cooling of the drive rod is unnecessary. The thermal expansion of the ceramic material of the drive rod is comparatively low and does not deviate significantly from the thermal expansion of the closure and / or control element, so that a compensation of the different thermal expansion is generally unnecessary.

Vorteilhafte Ausgestaltungen der Erfindung ergeben sich aus den Unteransprüchen und der folgenden Beschreibung von Ausführungsbeispielen. Es zeigen:

Figur 1
eine Verschluß- und Regeleinrichtung am Ausguß eines metallurgischen Gefäßes, schematisch im Schnitt,
Figur 2
ein weiteres Ausführungsbeispiel schematisch im Schnitt, und
Figur 3
einen Schnitt längs der Linie III-III nach Figur 2.
Advantageous refinements of the invention result from the subclaims and the following description of exemplary embodiments. Show it:
Figure 1
a closure and control device on the spout of a metallurgical vessel, schematically in section,
Figure 2
another embodiment schematically in section, and
Figure 3
a section along the line III-III of Figure 2.

Am Boden 1 eines metallurgischen Gefäßes 2 ist ein zylindrisches Auslauforgan 3 (Stator) befestigt. Das Auslauforgan 3 weist eine seitliche Einlaßöffnung 4 für die im Gefäß 2 befindliche Schmelze auf. Der Badspiegel der Schmelze ist mit 5 bezeichnet.At the bottom 1 of a metallurgical vessel 2, a cylindrical outlet member 3 (stator) is attached. The outlet member 3 has a lateral inlet opening 4 for the melt located in the vessel 2. The bath level of the melt is designated 5.

Im Auslauforgan 3 ist ein Verschluß- und Regelorgan 6 (Rotor) gelagert. Das Verschluß- und Regelorgan 6 greift dabei mit seinem unteren Bereich 7 in das Auslauforgan 3. Im unteren Bereich 7 ist das Verschluß- und Regelorgan 6 mit einer Durchtrittsöffnung 8 versehen, welche durch Drehen des Verschluß- und Regelorgans 6 um seine Längsachse L mit der Einlaßöffnung 4 zur Deckung bringbar ist.A closure and control element 6 (rotor) is mounted in the outlet element 3. The closure and control member 6 engages with its lower region 7 in the outlet member 3. In the lower region 7, the closure and control member 6 is provided with a passage opening 8, which by rotating the closure and control member 6 about its longitudinal axis L with the Inlet opening 4 can be brought to cover.

Das Verschluß- und Regelorgan 6 erstreckt sich bis über den Badspiegel 5. Oberhalb des unteren Bereichs 7 ist es mit einem oben offenen Innenraum 9 versehen. Dieser ist unten an seinem Grund 10 geschlossen. Der Grund 10 liegt beim Ausführungsbeispiel oberhalb einer Stufe 11 des Außenumfangs des Verschluß- und Regelorgans 6, mit der dieses auf einem oberen Rand 12 des Auslauforgans 3 aufsteht. Es ist jedoch auch mögich, den Grund 10 tiefer - bis unterhalb der Stufe 11 - zu legen.The closure and control element 6 extends beyond the bath level 5. Above the lower area 7, it is provided with an interior space 9 open at the top. This is closed at its bottom 10. In the exemplary embodiment, the base 10 lies above a step 11 of the outer circumference of the closure and control element 6, with which it stands on an upper edge 12 of the outlet element 3. However, it is also possible to lower the bottom 10 - to below level 11.

Im Innenraum 9 erstreckt sich eine Antriebsstange 13. Deren nicht dargestelltes, oberes, äußeres Ende ist an einem Antriebsaggregat angekoppelt, mit dem die Antriebsstange 13 um ihre Achse A drehbar ist.A drive rod 13 extends in the interior 9. Its upper, outer end, which is not shown, is coupled to a drive unit with which the drive rod 13 can be rotated about its axis A.

Am unteren inneren Ende der Antriebsstange 13 ist nach Figur 1 ein Übertragungselement vorgesehen, das aus einem Übertragungsblock 14 und einer Kalotte 15 besteht. Die Kalotte 15 sitzt in einer konkaven Ausnehmung 16 des Grundes 10. Mittels der Kalotte 15 ist die Antriebsstange 13 in dem Verschluß- und Regelorgan so gelagert, daß die Längsachse L des Verschluß- und Regelorgans 6 und die Achse A der Antriebsstange 13 gegeneinander kippbar sind. Durch dieses mögliche Kippen dar Antriebsstange 13 gegen das Verschluß- und Regelorgan 6 werden Toleranzen zwischen dem Antriebsaggregat und der Lage des Auslauforgans 3 so ausgeglichen, daß das Verschluß- und Regelorgan 6 zwanglos im Auslauforgan 3 gelagert und antreibbar ist.At the lower inner end of the drive rod 13, a transmission element is provided according to Figure 1, which consists of a transmission block 14 and a cap 15. The Dome 15 sits in a concave recess 16 of the base 10. By means of the dome 15, the drive rod 13 is mounted in the closure and control member so that the longitudinal axis L of the closure and control member 6 and the axis A of the drive rod 13 can be tilted towards each other. Due to this possible tilting of the drive rod 13 against the closure and control member 6, tolerances between the drive unit and the position of the outlet member 3 are compensated for so that the closure and control member 6 is freely supported in the outlet member 3 and can be driven.

Der Querschnitt Q des Innenraums 9 weicht von der Kreisform ab. Er ist beispielsweise quadratisch, mehreckig oder oval. Der Übertragungsblock 14 weist einen Querschnitt q auf, der gleich dem Querschnitt Q des Innenraums 9 ist. Er ist mit der Antriebsstange 13 drehfest verbunden, so daß bei einer Drehung der Antriebsstange 13 um die Achse A der Übertragungsblock 14 des Verschluß- und Regelorgans 6 formschlüssig so mitnimmt, daß es sich um seine Längsachse L dreht. Wölbungen am Außenumfang des Übertragungsblockes 14 vermeiden, daß der Übertragungsblock 14 das mögliche Kippen behindert.The cross section Q of the interior 9 deviates from the circular shape. For example, it is square, polygonal or oval. The transmission block 14 has a cross section q which is equal to the cross section Q of the interior 9. It is connected to the drive rod 13 in a rotationally fixed manner, so that when the drive rod 13 rotates about the axis A, the transmission block 14 of the closure and control element 6 is positively entrained so that it rotates about its longitudinal axis L. Avoid bulges on the outer periphery of the transmission block 14 so that the transmission block 14 prevents the possibility of tipping.

Der Übertragungsblock 14 besteht aus einer feuerfesten Keramik, beispielsweise einer ZrO₂- oder SiC-Keramik. Die Antriebsstange 13, der Übertragungsblock 14 und die Kalotte 15 können auch ein einstückig geformtes Bauteil aus keramischem Material bilden. Letzteres weist vorzugsweise, insbesondere für den Übertragungsblock 14 etwa den gleichen Wärmeausdehnungskoeffizienten auf wie das keramische Material des Verschluß- und Regelorgans 6.The transmission block 14 consists of a refractory ceramic, for example a ZrO₂ or SiC ceramic. The drive rod 13, the transmission block 14 and the spherical cap 15 can also form an integrally molded component made of ceramic material. The latter preferably has approximately the same coefficient of thermal expansion, in particular for the transmission block 14, as the ceramic material of the closure and control element 6.

Die Antriebsstange 13 mit Übertragungsblock 14 und Kalotte 15 hält der im Innenraum 9 herrschenden hohen Temperatur ohne weiteres stand. Sie kann weiterverwendet werden, wenn das Verschluß- und Regelorgan 6 verschlissen ist und ausgetauscht werden muß. Zur Längsachse A radiale Wärmedehnungen des keramischen Übertragungsblocks 14 sind höchstens klein, jedenfalls nicht größer als Wärmedehnungen des Verschluß- und Regelorgans 6 in diesem Bereich, so daß nicht die Gefahr einer Schädigung des Verschluß- und Regelorgans 6 besteht.The drive rod 13 with transmission block 14 and cap 15 easily withstands the high temperature prevailing in the interior 9. It can continue to be used if the closure and control element 6 is worn and has to be replaced. Radial thermal expansions of the ceramic transmission block 14 to the longitudinal axis A are at most small, in any case not greater than thermal expansions of the closure and control element 6 in this area, so that there is no risk of damage to the closure and control element 6.

Beim Ausführungsbeispiel nach Figur 2 und 3 ist am Grund 10 des Innenraums 9 eine Vertiefung 17 ausgebildet. Diese weist ein kreuzförmiges Querschnittsprofil auf. Die Vertiefung 17 verjüngt sich nach unten konisch.In the exemplary embodiment according to FIGS. 2 and 3, a depression 17 is formed on the base 10 of the interior 9. This has a cross-shaped cross-sectional profile. The recess 17 tapers conically downwards.

Ein dem Querschnittsprofil der Vertiefung 17 entsprechendes Querschnittsprofil weist die Antriebsstange 13 auf. Diese greift mit ihrem unteren, inneren Ende in die Vertiefung 17. Dadurch ist eine drehfeste Verbindung zwischen der Antriebsstange 13 und dem Verschluß- und Regelorgan 6 gewährleistet. Der Querschnitt des Verschluß- und Regelorgans 6 ist kreisringförmig.The drive rod 13 has a cross-sectional profile corresponding to the cross-sectional profile of the recess 17. This engages with its lower, inner end in the recess 17. This ensures a rotationally fixed connection between the drive rod 13 and the closure and control element 6. The cross section of the closure and control element 6 is annular.

Die Antriebsstange 13 besteht aus der beschriebenen Keramik. Sie kann aber auch aus einem keramischen Material auf Basis Al₂O₃ oder Si₃N₄ bestehen.The drive rod 13 consists of the ceramic described. But it can also consist of a ceramic material based on Al₂O₃ or Si₃N₄.

Die Antriebsstange 13 kann vorteilhafterweise im Schlickerguß, im Strangguß oder durch isostatisches Pressen hergestellt werden. Hierbei sind sowohl Vollprofile als auch Hohlprofile verwendbar.The drive rod 13 can advantageously be produced in slip casting, in continuous casting or by isostatic pressing. Both full profiles and hollow profiles can be used.

Die Antriebsstange 13 kann sich an ihrem unteren Endbereich ebenfalls konisch verjüngen. Dies ist jedoch nicht erforderlich. In jedem Fall besteht ein Freiraum 18, der ein Kippen der Antriebsstange 13 gegenüber dem Verschluß- und Regelorgan 6 zuläßt.The drive rod 13 can also taper conically at its lower end region. However, this is not necessary. In any case, there is a free space 18 which allows the drive rod 13 to tilt with respect to the closure and control element 6.

Claims (7)

  1. Closure and control device for the outlet of a metallurgical vessel with a rotatable, refractory, ceramic closure and control member (6), whose lower region (7) is supported in a cylindrical outlet member (3) of the metallurgical vessel (2) and is provided with an upwardly open internal space (9) which is downwardly closed at its base, whereby extending within the internal space (9) there is a drive rod (13) whose upper, outer end may be coupled to a drive unit for the closure and control member (6) and whose lower, inner end engages the closure and control member (6) in the base region (10) of the internal space (9), characterised in that the drive rod (13) comprises a ceramic material, at least in its inner end region where it forms a rotational connection with the closure and control element (6).
  2. Closure and/or control device as claimed in Claim 1, characterised in that the cross-sectional profile (Q) of the internal space (9) and the cross-sectional profile (q) of at least the inner end region of the drive rod (13) are matched to one another and that the cross-sectional profiles (Q, q) deviate from the circular.
  3. Closure and/or control device as claimed in Claim 2, characterised in that the drive rod (13) engages in the internal space (9) of the closure and/or control member (6) by means of a transmission block (14) which is formed on it and comprises the ceramic material.
  4. Closure and/or control device as claimed in one of the preceding claims, characterised in that formed on the drive rod (13) there is a hemispherical element (15) which bears on the base (10) of the internal space (9).
  5. Closure and/or control device as claimed in Claim 2, characterised in that formed on the base (10) of the internal space (9) there is a recess (17) with a cross-sectional profile which deviates from the circular and that the inner end region of the drive rod (13) engages in the recess (17) with a corresponding cross-sectional profile.
  6. Closure and/or control device as claimed in one of the preceding claims, characterised in that the ceramic material of the drive rod (13) and/or its transmission block (14) has approximately the same thermal expansion coefficient as the ceramic material of the closure and/or control member (6).
  7. Closure and/or control device as claimed in one of the preceding claims, characterised in that the drive rod (13) and/or its transmission block (14) and/or its hemispherical element (15) comprise a ZrO₂ or SiC ceramic.
EP91115608A 1990-10-10 1991-09-14 Shut-off and/or control mechanism for the outlet of a vessel containing metal Expired - Lifetime EP0480202B1 (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
AT91115608T ATE92383T1 (en) 1990-10-10 1991-09-14 CLOSING AND/OR CONTROL DEVICE FOR THE SPOUT OF A METALLURGICAL VESSEL.

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE4032083A DE4032083A1 (en) 1990-10-10 1990-10-10 LOCKING AND / OR CONTROL DEVICE FOR POURING A METALLURGICAL VESSEL
DE4032083 1990-10-10

Publications (2)

Publication Number Publication Date
EP0480202A1 EP0480202A1 (en) 1992-04-15
EP0480202B1 true EP0480202B1 (en) 1993-08-04

Family

ID=6415972

Family Applications (1)

Application Number Title Priority Date Filing Date
EP91115608A Expired - Lifetime EP0480202B1 (en) 1990-10-10 1991-09-14 Shut-off and/or control mechanism for the outlet of a vessel containing metal

Country Status (10)

Country Link
US (1) US5183624A (en)
EP (1) EP0480202B1 (en)
JP (1) JPH04262855A (en)
KR (1) KR920007721A (en)
AT (1) ATE92383T1 (en)
BR (1) BR9104372A (en)
CA (1) CA2053066A1 (en)
DE (2) DE4032083A1 (en)
ES (1) ES2044669T3 (en)
ZA (1) ZA917483B (en)

Families Citing this family (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE4032084C1 (en) * 1990-10-10 1992-05-27 Didier-Werke Ag, 6200 Wiesbaden, De
GB9817645D0 (en) * 1998-08-14 1998-10-07 Didier Werke Ag Stopper
US8210402B2 (en) 2009-02-09 2012-07-03 Ajf, Inc. Slag control shape device with L-shape loading bracket

Family Cites Families (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US117918A (en) * 1871-08-08 Improvement in stoppers for ladles
US4196829A (en) * 1978-07-07 1980-04-08 Seaton Engineering Company Stopper throttling system
JPH01502168A (en) * 1986-12-01 1989-08-03 アルヴア・アーゲー Outlet and flow control devices for metallurgical vessels and casting methods
DE3731600A1 (en) * 1987-09-19 1989-04-06 Didier Werke Ag TURNTABLE CLOSURE FOR A METALURIGAN TUBE AND ROTOR AND / OR STATOR FOR SUCH A TURNOVER
DE3743383A1 (en) * 1987-12-21 1989-07-06 Radex Deutschland Ag Stopper-like device for discharge regulation of the pouring outlet (nozzle) of a vessel receiving metallurgical melt
US4946083A (en) * 1988-12-29 1990-08-07 Vesuvius Crucible Company One-piece stopper rod

Also Published As

Publication number Publication date
KR920007721A (en) 1992-05-27
ATE92383T1 (en) 1993-08-15
CA2053066A1 (en) 1992-04-11
DE4032083A1 (en) 1992-04-16
US5183624A (en) 1993-02-02
ES2044669T3 (en) 1994-01-01
DE4032083C2 (en) 1992-09-17
EP0480202A1 (en) 1992-04-15
DE59100256D1 (en) 1993-09-09
JPH04262855A (en) 1992-09-18
ZA917483B (en) 1992-06-24
BR9104372A (en) 1992-06-09

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