EP0522284B1 - Refractory plate for use in sliding closure unit - Google Patents

Refractory plate for use in sliding closure unit Download PDF

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Publication number
EP0522284B1
EP0522284B1 EP92109352A EP92109352A EP0522284B1 EP 0522284 B1 EP0522284 B1 EP 0522284B1 EP 92109352 A EP92109352 A EP 92109352A EP 92109352 A EP92109352 A EP 92109352A EP 0522284 B1 EP0522284 B1 EP 0522284B1
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EP
European Patent Office
Prior art keywords
plate
collar
valve plate
connecting sleeve
valve
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Expired - Lifetime
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EP92109352A
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German (de)
French (fr)
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EP0522284A1 (en
Inventor
Walter Toaldo
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Stopinc AG
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Stopinc AG
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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
    • B22D41/00—Casting melt-holding vessels, e.g. ladles, tundishes, cups or the like
    • B22D41/14—Closures
    • B22D41/22—Closures sliding-gate type, i.e. having a fixed plate and a movable plate in sliding contact with each other for selective registry of their openings
    • B22D41/28—Plates therefor

Definitions

  • the invention relates to a refractory closure plate for a sliding closure at the spout of a metal-containing vessel, consisting of a refractory plate having a flow opening with a sliding surface, a plate attachment arranged coaxially to the flow opening on the plate side facing away from the sliding surface and a sheet metal jacket surrounding the plate and the plate attachment .
  • the sheet metal casing extends to the level of the face of the plate insert facing away from the sliding surface, so that the collar of the sheet metal casing is flush with this end face.
  • the adjacent sleeve is arranged for both the upper and the lower closure plate at a distance of 3 to 5 millimeters from the end face of the plate.
  • a commercially available refractory compound, for example mortar is used to seal between the plate and the sleeve. In practice, it may happen that the mortar is not properly distributed over the entire end face or that the sleeve is too far away from the plate and therefore there is too little mortar and the seal around the flow opening is not properly produced. In the worst case, this can lead to a so-called breakthrough, in which the liquid steel flows out laterally between the sleeve and the plate and, depending on the situation, can lead to total damage to the sliding closure.
  • the present invention has for its object to provide a fireproof closure plate of the type mentioned, in which the risk of breakthrough is greatly reduced with a simple and inexpensive measure and thus the operational reliability of a sliding closure with such closure plates is increased.
  • the object is achieved in that the sheet metal casing has a collar projecting above the plate attachment, which is arranged centrally to the flow opening and whose diameter approximately corresponds to the outer diameter of the plate attachment.
  • This collar according to the invention still has the surprising effect when it serves as a lesson when preparing a plate for mounting in a sliding closure, in which the mortar can be applied to the end face of the plate within this annular collar. This ensures on the one hand that this plastic mass is always applied in approximately the same amount and on the other hand it is avoided that this mass does not flow away in an uncontrolled manner when the plate is placed.
  • the projecting collar is designed as an annular extension of the sheet metal casing.
  • the sheet metal casing has a cylindrical centering surface which is coaxial with the flow opening as the centering of the plate in the sliding closure and the projecting collar is designed as an extension of this centering surface.
  • the annular collar is angled towards the inside.
  • the collar expediently protrudes between 5 and 20 mm from the corresponding end face of the plate attachment.
  • the collar facing the connecting sleeve is designed according to the invention such that it surrounds the intended joint between the plate and the sleeve.
  • the connecting sleeve is arranged on its end facing the closure plate in the sliding closure in such a way that its end facing the closure plate is surrounded by the collar with almost no play.
  • the collar of the closure plate can also protrude into an annular groove on the end face of the connecting sleeve. It is advantageous if the collar fits into the annular groove of the connecting sleeve with almost no play.
  • a sliding closure 10 known per se is partially shown, as is shown, for example, in EP-PS 0 277 146 and is therefore no longer described in detail in the present case.
  • This sliding closure 10 has a metallic housing 12 which is connected to a Wall 14 of a vessel containing molten metal, for example a pan, is fastened with an inner refractory lining 13.
  • the spout 16 of the vessel is defined by a refractory sleeve 18 which can be placed in this lining 13.
  • a fireproof closure plate 20 is arranged in the housing 12 such that it connects to this sleeve 18 at the end at a certain distance, for example 3 to 5 millimeters.
  • This closure plate 20 which is arranged as a fixed base plate, has on the opposite side a sliding surface against which a longitudinally displaceable refractory closure plate 22 is pressed.
  • the closure plate 22 is in turn inserted into a metallic slide unit 23, in which a subsequent exchangeable pouring sleeve 24 is also fastened.
  • the sleeves 18, 24 form, together with the closure plates 20, 22 in the open position of the slide closure, a flow opening 16 which drains the molten metal the melt flow can be completely interrupted.
  • the refractory closure plates 20, 22 each have a sheet metal sheath 26, 28, preferably made of steel, and a refractory plate mortared therein.
  • the sheet metal jacket 26, 28 each has a cylindrical centering surface 26 ′′, 28 ′′ centered around the refractory attachment of the plate and to the flow opening for the purpose of centering the plate in the housing 12 and respectively. in the slide unit 23.
  • the cylindrical centering surface 26 '', 28 '' of the sheet metal casing which is coaxial to the flow opening, has a collar 26 ', 28' projecting on the side 20 ', 22' facing away from the sliding surface of the plate, which essentially corresponds to that between the plate 20, 22 and the subsequent sleeve 18, 24 formed joint 29, 31 surrounds.
  • this gives the great advantage that, in the end, the risk of breakthrough between a plate and the sleeve can be considerably reduced.
  • this collar fulfills the task as the mortar cannot emerge laterally from the joint 29, 31.
  • the collar is provided in such a way that it is angled towards the inside and surrounds the sleeve in the set state with only a little play (0.5-3 mm). This ensures that the sleeve 18, 24, which usually has a different distance from the plate end face 20 ', 22' each time it is set, is guaranteed to be surrounded by the collar. With the lower sleeve 24, there is less of this risk, because the sleeve 24 is always at a defined distance from the underside 22 'of the plate. But this sleeve 24 is also surrounded by a collar 28.
  • the plates are otherwise identical, which is known to simplify their manufacture.
  • the refractory closure plates 30, 32 shown in FIG. 2 differ from those according to FIG. 1 only in that their respective collar 36 ', 38' formed by the sheet metal jacket 36, 38 only by approximately the thickness of the sheet metal jacket to the board end face 30 ', 32 'protrudes. In this case too, it is again ensured that a defined amount of mortar can be used with this collar 36 ', 38' and that the mortar is not pushed away in an undefined manner when the slabs are set. Centering surfaces 36 '', 38 '' of the plates 30, 32 in turn enable their centering in the housing, respectively. in the slide unit.
  • a sliding closure 10 is again shown in a partial view, in which a refractory sleeve 43 is arranged on the inlet side, a sleeve 44 on the outlet side and two refractory closure plates 40, 42 which are displaceable in relation to one another and are located in between.
  • the identically designed closure plates 40, 42 in turn each have a sheet metal casing 46, 48, each of which has a cylindrical centering surface 46 ′′, 48 ′′ surrounding the refractory attachment of the plate 40, 42 for centering the same, and starting therefrom an angled inwards by 90 ° Annular surface 47 ', 49' and in turn a collar 46 ', 47' projecting towards the plate end 40 ', 42', which forms a ring and projects into an annular groove 43 ', 44' of the sleeve 43, 44.
  • the cross section of the annular groove 43 ', 44' is larger on all sides by approximately 1 mm than the cross section of the collar 46 ', 48'.

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  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Casting Support Devices, Ladles, And Melt Control Thereby (AREA)
  • Sliding Valves (AREA)

Description

Die Erfindung betrifft eine feuerfeste Verschlußplatte für einen Schiebeverschluß am Ausguß eines Metallschmelze enthaltenden Gefäßes, bestehend aus einer eine Durchflußöffnung aufweisenden feuerfesten Platte mit einer Gleitfläche, einem koaxial zur Durchflußöffnung angeordneten Plattenansatz auf der von der Gleitfläche abgekehrten Plattenseite sowie einer die Platte und den Plattenansatz umgebenden Blechummantelung.The invention relates to a refractory closure plate for a sliding closure at the spout of a metal-containing vessel, consisting of a refractory plate having a flow opening with a sliding surface, a plate attachment arranged coaxially to the flow opening on the plate side facing away from the sliding surface and a sheet metal jacket surrounding the plate and the plate attachment .

Bei einer bekannten feuerfesten Verschlußplatte nach der DE-PS 38 05 074 erstreckt sich die Blechummantelung bis auf die Höhe der der Gleitfläche abgekehrten Stirnfläche des Platteneinsatzes, so daß der Bund des Blechmantels mit dieser Stirnseite bündig ist. Die angrenzende Hülse ist dabei sowohl für die obere wie auch die untere Verschlußplatte in einem Abstand von 3 bis 5 Millimetern zu der genannten Stirnfläche der Platte angeordnet. Zur Abdichtung zwischen der Platte und der Hülse wird eine handelsübliche feuerfeste Masse, beispielsweise Mörtel, verwendet. In der Praxis kann es vorkommen, daß der Mörtel nicht einwandfrei über die gesamte Stirnfläche verteilt wird oder daß die Hülse einen zu großen Abstand von der Platte hat und dadurch zu wenig Mörtel vorhanden ist und so die Abdichtung um die Durchflußöffnung herum nicht einwandfrei hergestellt ist. Im ungünstigsten Fall kann dies zu einem sogenannten Durchbruch führen, bei dem der flüssige Stahl zwischen Hülse und Platte seitlich ausfließt und je nachdem bis zu einem Totalschaden des Schiebeverschlusses führen kann.In a known refractory closure plate according to DE-PS 38 05 074, the sheet metal casing extends to the level of the face of the plate insert facing away from the sliding surface, so that the collar of the sheet metal casing is flush with this end face. The adjacent sleeve is arranged for both the upper and the lower closure plate at a distance of 3 to 5 millimeters from the end face of the plate. A commercially available refractory compound, for example mortar, is used to seal between the plate and the sleeve. In practice, it may happen that the mortar is not properly distributed over the entire end face or that the sleeve is too far away from the plate and therefore there is too little mortar and the seal around the flow opening is not properly produced. In the worst case, this can lead to a so-called breakthrough, in which the liquid steel flows out laterally between the sleeve and the plate and, depending on the situation, can lead to total damage to the sliding closure.

Um insbesondere diese Durchbruchsgefahr erheblich zu senken, liegt der vorliegenden Erfindung die Aufgabe zugrunde, eine feuerfeste Verschlußplatte nach der eingangs erwähnten Gattung zu schaffen, bei der mit einfacher und billiger Maßnahme die Durchbruchsgefahr stark reduziert und damit die Betriebssicherheit eines Schiebeverschlusses mit solchen Verschlußplatten erhöht wird.In particular, to significantly reduce this risk of breakthrough, the present invention has for its object to provide a fireproof closure plate of the type mentioned, in which the risk of breakthrough is greatly reduced with a simple and inexpensive measure and thus the operational reliability of a sliding closure with such closure plates is increased.

Erfindungsgemäß ist die Aufgabe dadurch gelöst, daß die Blechummantelung einen über den Plattenansatz vorstehenden Bund aufweist, der zentrisch zur Durchflußöffnung angeordnet ist und dessen Durchmesser annähernd dem Außendurchmesser des Plattenansatzes entspricht. Mit dieser Ausgestaltung einer Verschlußplatte lassen sich Durchbrüche fast gänzlich vermeiden, denn dieser die Fuge zwischen Platte und Hülse umgebende Bund bewirkt eine entscheidende Verbesserung der Abdichtung. Sogar, wenn gegebenenfalls diese Fuge nicht hundertprozentig mit Mörtel gefüllt ist und beim Abgießen Stahlschmelze dazwischen infiltrieren würde, ist die Stahlschmelze durch diesen Bund entscheidend gehindert, bis in den Schiebeverschluß auszufließen und diesen zu beschädigen und sogar zu zerstören.According to the invention the object is achieved in that the sheet metal casing has a collar projecting above the plate attachment, which is arranged centrally to the flow opening and whose diameter approximately corresponds to the outer diameter of the plate attachment. With this configuration of a closure plate, breakthroughs can be avoided almost entirely, since this collar surrounding the joint between the plate and the sleeve brings about a decisive improvement in the seal. Even if this joint is not filled 100% with mortar and if molten steel would infiltrate it during pouring, the steel melt is decisively prevented by this collar from flowing out into the sliding closure and damaging and even destroying it.

Dieser erfindungsgemäße Bund hat noch den überraschenden Effekt, als er beim Vorbereiten einer Platte für das Montieren in einen Schiebeverschluß als Lehre dient, bei der der Mörtel innerhalb dieses ringförmigen Bundes auf die Plattenstirnfläche aufgetragen werden kann. Dadurch wird einerseits erzielt, daß diese plastische Masse stets in annähernd gleicher Menge aufgetragen wird und andererseits wird vermieden, daß diese Masse beim Setzen der Platte nicht unkontrolliert wegfließt.This collar according to the invention still has the surprising effect when it serves as a lesson when preparing a plate for mounting in a sliding closure, in which the mortar can be applied to the end face of the plate within this annular collar. This ensures on the one hand that this plastic mass is always applied in approximately the same amount and on the other hand it is avoided that this mass does not flow away in an uncontrolled manner when the plate is placed.

Bei einer vorteilhaften Ausbildung der erfindungsgemäßen Verschlußplatte ist der vorstehende Bund als ringförmige Verlängerung der Blechummantelung ausgebildet.In an advantageous embodiment of the closure plate according to the invention, the projecting collar is designed as an annular extension of the sheet metal casing.

Es ist hierbei zweckmäßig, wenn die Blechummantelung eine zur Durchflußöffnung koaxiale zylindrische Zentrierfläche als Zentrierung der Platte im Schiebeverschluß hat und der vorstehende Bund als Verlängerung dieser Zentrierfläche ausgebildet ist.It is expedient here if the sheet metal casing has a cylindrical centering surface which is coaxial with the flow opening as the centering of the plate in the sliding closure and the projecting collar is designed as an extension of this centering surface.

Bei einer weiteren vorteilhaften Ausbildung der erfindungsgemäßen Verschlußplatte ist der ringförmige Bund gegen innen abgewinkelt.In a further advantageous embodiment of the closure plate according to the invention, the annular collar is angled towards the inside.

Zweckmäßigerweise steht der Bund zwischen 5 und 20 mm gegenüber der korrespondierenden Stirnfläche des Plattenansatzes vor.The collar expediently protrudes between 5 and 20 mm from the corresponding end face of the plate attachment.

Bei der üblicherweise in einem Schiebeverschluß vorgesehenen Konstellation, bei der an die Verschlußplatte eine feuerfeste Anschlußhülse folgt, ist erfindungsgemäß der der Anschlußhülse zugekehrte Bund dergestalt ausgebildet, daß er die vorgesehene Fuge zwischen der Platte und der Hülse umgibt. Damit ist die gewünschte Durchbruchsicherheit vollumfänglich erreicht.In the constellation usually provided in a sliding closure, in which a fireproof connecting sleeve follows the closing plate, the collar facing the connecting sleeve is designed according to the invention such that it surrounds the intended joint between the plate and the sleeve. The desired breakthrough security is thus fully achieved.

Vorteilhatterweise ist die Anschlußhülse auf ihrem der Verschlußplatte zugekehrten Ende derart im Schiebeverschluß angeordnet, daß deren der Verschlußplatte zugekehrtes Ende annähernd spielfrei vom Bund umgeben ist. Der Bund der Verschlußplatte kann auch in eine stirnseitige Ringnut der Anschlußhülse hineinragen. Hierbei ist es von Vorteil, wenn der Bund annähernd spielfrei in die Ringnut der Anschlußhülse paßt.Advantageously, the connecting sleeve is arranged on its end facing the closure plate in the sliding closure in such a way that its end facing the closure plate is surrounded by the collar with almost no play. The collar of the closure plate can also protrude into an annular groove on the end face of the connecting sleeve. It is advantageous if the collar fits into the annular groove of the connecting sleeve with almost no play.

Ausführungsbeispiele sowie weitere Vorteile der Erfindung sind nachfolgend anhand der Zeichnung näher erläutert. Es zeigt:

Figur 1
einen teilweisen Längsschnitt durch einen Schiebeverschluß mit erfindungsgemäßen Verschlußplatten,
Figur 2
einen teilweisen Längsschnitt von Verschlußplatten in einem Schiebeverschluß, und
Figur 3
einen teilweisen Längsschnitt durch einen Schiebeverschluß mit einer Variante von Verschlußplatten.
Exemplary embodiments and further advantages of the invention are explained in more detail below with reference to the drawing. It shows:
Figure 1
a partial longitudinal section through a sliding closure with closure plates according to the invention,
Figure 2
a partial longitudinal section of closure plates in a sliding closure, and
Figure 3
a partial longitudinal section through a sliding closure with a variant of closure plates.

In Figur 1 ist ein an sich bekannter Schiebeverschluß 10 teilweise gezeigt, wie er beispielsweise in der EP-PS 0 277 146 dargestellt ist und daher vorliegend nicht mehr in jedem Detail beschrieben ist.. Dieser Schiebeverschluß 10 hat ein metallisches Gehäuse 12, das an eine Wandung 14 eines Metallschmelze enthaltenden Gefäßes, beispielsweise eine Pfanne, mit einer inneren feuerfesten Auskleidung 13 befestigt ist. Der Ausguß 16 des Gefäßes ist durch eine in diese Auskleidung 13 setzbare feuerfeste Hülse 18 definiert. Eine feuerfeste Verschlußplatte 20 ist im Gehäuse 12 derart angeordnet, als sie stirnseitig in einem bestimmten Abstand, z.B. 3 bis 5 Millimeter, an diese Hülse 18 anschließt. Diese als feste Bodenplatte angeordnete Verschlußplatte 20 weist gegenüberliegend eine Gleitfläche auf, an die eine längsverschiebbare feuerfeste Verschlußplatte 22 angedrückt ist. Die Verschlußplatte 22 ist ihrerseits in eine metallische Schiebereinheit 23 eingelegt, in welcher auch eine anschließende wechselbare Ausgußhülse 24 befestigt ist. Die Hülsen 18, 24 bilden zusammen mit den Verschlußplatten 20, 22 in der Offenstellung des Schiebeverschlusses eine die Metallschmelze ablassende Durchflußöffnung 16. Durch Verschieben der als Schieberplatte ausgebildeten Verschlußplatte 22 laßt sich die Metallschmelze reguliert abgießen oder aber durch Verschieben der Platte 22 in die Schließstellung kann der Schmelzenfluß gänzlich unterbrochen werden.In Figure 1, a sliding closure 10 known per se is partially shown, as is shown, for example, in EP-PS 0 277 146 and is therefore no longer described in detail in the present case. This sliding closure 10 has a metallic housing 12 which is connected to a Wall 14 of a vessel containing molten metal, for example a pan, is fastened with an inner refractory lining 13. The spout 16 of the vessel is defined by a refractory sleeve 18 which can be placed in this lining 13. A fireproof closure plate 20 is arranged in the housing 12 such that it connects to this sleeve 18 at the end at a certain distance, for example 3 to 5 millimeters. This closure plate 20, which is arranged as a fixed base plate, has on the opposite side a sliding surface against which a longitudinally displaceable refractory closure plate 22 is pressed. The closure plate 22 is in turn inserted into a metallic slide unit 23, in which a subsequent exchangeable pouring sleeve 24 is also fastened. The sleeves 18, 24 form, together with the closure plates 20, 22 in the open position of the slide closure, a flow opening 16 which drains the molten metal the melt flow can be completely interrupted.

Die feuerfesten Verschlußplatten 20, 22 haben je eine vorzugsweise aus Stahl gefertigte Blechummantelung 26, 28 sowie eine darin eingemörtelte feuerfeste Platte. Die Blechummantelung 26, 28 weist jeweils eine um den feuerfesten Ansatz der Platte und zur Durchflußöffnung zentrische zylindrische Zentrierfläche 26'', 28'' zwecks Zentrierung der Platte im Gehäuse 12 resp. in der Schiebereinheit 23.The refractory closure plates 20, 22 each have a sheet metal sheath 26, 28, preferably made of steel, and a refractory plate mortared therein. The sheet metal jacket 26, 28 each has a cylindrical centering surface 26 ″, 28 ″ centered around the refractory attachment of the plate and to the flow opening for the purpose of centering the plate in the housing 12 and respectively. in the slide unit 23.

Die zur Durchflußöffnung koaxiale zylindrische Zentrierfläche 26'', 28'' der Blechummantelung hat erfindungsgemäß einen auf der der Gleitfläche der Platte abgekehrten Seite 20', 22' vorstehenden Bund 26', 28', der im wesentlichen die zwischen der Platte 20, 22 und der daran folgenden Hülse 18, 24 gebildete Fuge 29, 31 umgibt. Wie bereits oben erwähnt, ergibt dies den großen Vorteil, als im Endeffekt die Durchbruchsgefahr zwischen einer Platte und der Hülse beträchtlich vermindert werden kann. Beim Setzen einer Platte 20, 22 wird vorerst in den durch den Bund 26', 28' gebildeten Hohlraum Mörtel eingestrichen, was ohne jeglichen Aufwand sehr genau ausgeführt werden kann, und sodann wird die Platte in das Gehäuse 12 resp. in die Schiebereinheit 23 gesetzt. Beim Setzen erfüllt dieser Bund die Aufgabe, als der Mörtel nicht ungehindert seitlich aus der Fuge 29, 31 austreten kann. Der Bund ist dabei dergestalt vorgesehen, daß er gegen innen abgewinkelt ist und die Hülse im gesetzten Zustand mit nur wenig Spiel (0,5 - 3 mm) umgibt. Dadurch ist gesichert, daß die üblicherweise bei jedem Setzen einen unterschiedlichen Abstand zur Plattenstirnseite 20', 22' aufweisende Hülse 18, 24 garantiert von dem Bund umgeben ist. Bei der unteren Hülse 24 besteht diese Gefahr weniger, denn die Hülse 24 hat stets einen definierten Abstand zu der Plattenunterseite 22'. Aber auch diese Hülse 24 ist entsprechend von einem Bund 28 umgeben. In dem gezeigten Beispiel sind die Platten im übrigen identisch ausgebildet, was bekanntlich Vereinfachungen in deren Herstellung ergibt.According to the invention, the cylindrical centering surface 26 '', 28 '' of the sheet metal casing, which is coaxial to the flow opening, has a collar 26 ', 28' projecting on the side 20 ', 22' facing away from the sliding surface of the plate, which essentially corresponds to that between the plate 20, 22 and the subsequent sleeve 18, 24 formed joint 29, 31 surrounds. As already mentioned above, this gives the great advantage that, in the end, the risk of breakthrough between a plate and the sleeve can be considerably reduced. When placing a plate 20, 22 mortar is first brushed into the cavity formed by the collar 26 ', 28', which can be carried out very precisely without any effort, and then the plate in the housing 12 or. set in the slide unit 23. When setting, this collar fulfills the task as the mortar cannot emerge laterally from the joint 29, 31. The collar is provided in such a way that it is angled towards the inside and surrounds the sleeve in the set state with only a little play (0.5-3 mm). This ensures that the sleeve 18, 24, which usually has a different distance from the plate end face 20 ', 22' each time it is set, is guaranteed to be surrounded by the collar. With the lower sleeve 24, there is less of this risk, because the sleeve 24 is always at a defined distance from the underside 22 'of the plate. But this sleeve 24 is also surrounded by a collar 28. In the example shown, the plates are otherwise identical, which is known to simplify their manufacture.

Die in Figur 2 gezeigten feuerfesten Verschlußplatten 30, 32 unterscheiden sich von denen nach Figur 1 nur gerade darin, als deren jeweils von der Blechummantelung 36, 38 gebildeter Bund 36', 38' nur gerade um annähernd die Dicke der Blechummantelung zur Plattenstirnseite 30', 32' vorsteht. Auch in diesem Falle ist wieder gewährleistet, daß mit diesem Bund 36', 38' eine definierte Menge Mörtel verwendet werden kann und beim Setzen der Platten der Mörtel nicht undefiniert weggedrückt wird. Zentrierflächen 36'', 38'' der Platten 30, 32 ermöglichen wiederum deren Zentrierung im Gehäuse resp. in der Schiebereinheit.The refractory closure plates 30, 32 shown in FIG. 2 differ from those according to FIG. 1 only in that their respective collar 36 ', 38' formed by the sheet metal jacket 36, 38 only by approximately the thickness of the sheet metal jacket to the board end face 30 ', 32 'protrudes. In this case too, it is again ensured that a defined amount of mortar can be used with this collar 36 ', 38' and that the mortar is not pushed away in an undefined manner when the slabs are set. Centering surfaces 36 '', 38 '' of the plates 30, 32 in turn enable their centering in the housing, respectively. in the slide unit.

In Figur 3 ist wiederum ein Schiebeverschluß 10 in teilweiser Ansicht gezeigt, in den einlaufseitig eine feuerfeste Hülse 43, auslaufseitig eine Hülse 44 und dazwischenliegend zwei gegeneinander abdichtend verschiebbare feuerfeste Verschlußplatten 40, 42 angeordnet sind. Die identisch ausgebildeten Verschlußplatten 40, 42 haben wiederum je eine Blechummantelung 46, 48, welche jeweils eine den feuerfesten Ansatz der Platte 40, 42 umgebende zylindrische Zentrierfläche 46'', 48'' zur Zentrierung derselben sowie davon ausgehend eine um 90° nach innen abgewinkelten Ringfläche 47', 49' und wiederum einen zur Plattenstirnseite 40', 42' vorstehenden Bund 46', 47', der einen Ring bildet und in eine ringförmige Nut 43', 44' der Hülse 43, 44 ragt. Die ringförmige Nut 43', 44' ist dabei in ihrem Querschnitt allseitig um ca. 1 mm größer als der Querschnitt des Bundes 46', 48'. Diese erfindungsgemäße Lösung wie auch die bereits oben erwähnten haben ferner den Vorteil, als wenn in die von dem jeweiligen Bund umschlossene Fuge nur teilweise oder schlechterdings überhaupt kein Mörtel vorgesehen wäre, könnte mit dem die Fuge umgebenden Bund ein Abkalten und sogar ein Verfestigen der in die Fuge infiltrierenden Stahlschmelze erreicht und damit ein größerer Durchbruch vermieden werden.In FIG. 3, a sliding closure 10 is again shown in a partial view, in which a refractory sleeve 43 is arranged on the inlet side, a sleeve 44 on the outlet side and two refractory closure plates 40, 42 which are displaceable in relation to one another and are located in between. The identically designed closure plates 40, 42 in turn each have a sheet metal casing 46, 48, each of which has a cylindrical centering surface 46 ″, 48 ″ surrounding the refractory attachment of the plate 40, 42 for centering the same, and starting therefrom an angled inwards by 90 ° Annular surface 47 ', 49' and in turn a collar 46 ', 47' projecting towards the plate end 40 ', 42', which forms a ring and projects into an annular groove 43 ', 44' of the sleeve 43, 44. The cross section of the annular groove 43 ', 44' is larger on all sides by approximately 1 mm than the cross section of the collar 46 ', 48'. This solution according to the invention, as well as those already mentioned above, also have the advantage that, if only part or absolutely no mortar were provided in the joint enclosed by the respective collar, the collar surrounding the joint could cool down and even solidify the joint Joint infiltrating steel melt reached and thus a major breakthrough can be avoided.

Es versteht sich von selbst, daß die Erfindung sich noch in anderen Varianten offenbaren ließe, die nicht mehr im einzelnen aufgeführt sind.It goes without saying that the invention could be disclosed in other variants which are no longer listed in detail.

Claims (9)

  1. Refractory valve plate for a sliding gate valve at the outlet of a vessel containing metal melt comprising a refractory plate, which has a flow opening, with a sliding surface, a plate projection disposed coaxially with the flow opening on the side of the plate remote from the sliding surface and a sheet metal shell surrounding the plate and the plate projection, characterised in that the sheet metal shell (26, 28, 36,38,46,48) has a collar (26',28',36',38',46',48') projecting beyond the plate projection which is arranged centrally with respect of the flow opening (16) and whose diameter approximately corresponds to the external diameter of the plate projection.
  2. Valve plate as claimed in Claim 1, characterised in that the projecting collar (26',28',36',38',46',48') is constructed as an annular extension of the sheet metal shell (26, 28, 36, 38, 46, 48).
  3. Valve plate as claimed in Claim 1 or 2, characterised in that the sheet metal shell (26, 28, 36, 38, 46, 48) has a cylindrical centering surface (26'', 28'',36'',38'',46'',48'') coaxial with the flow opening (16) to centre the plate in the sliding gate valve (10) and the projecting collar (26',28',36',38',46',48) is constructed as an extension of this centering surface (26'',28'',36'',38'',46'',48'').
  4. Valve plate as claimed in Claim 1 or 2 characterised in that the annular collar (26',28',36',38',46',48') is bent over towards the interior.
  5. Valve plate as claimed in Claim 1 of the preceding claims, characterised in that the collar projects between 5 and 20 mm with respect to the corresponding end surface of the plate projection.
  6. Valve plate with an associated refractory connecting sleeve for a sliding gate valve as claimed in Claim 1 of the preceding claims, characterised in that the collar (26',28',36',38',46',48) surrounds the joint provided between the valve plate (20,22,30,32,40,42) and the connecting sleeve (18, 24, 43,44).
  7. Valve plate with a connecting sleeve as claimed in Claim 6, characterised in that the connecting sleeve (18, 24, 44) is so arranged in the sliding gate valve (10) on its end directed towards the valve plate (20,22,42) that its end directed towards the valve plate (20,22,42) is surrounded nearly without clearance by the collar (26',28',46',48).
  8. Valve plate with a connecting sleeve as claimed in Claim 6, characterised in that the collar (46') projects into an annular groove (43') in the end face of the connecting sleeve (43).
  9. Valve plate with a connecting sleeve as claimed in Claim 8, characterised in that the collar (46') fits nearly without clearance in the annular groove (43') in the connecting sleeve (43).
EP92109352A 1991-07-12 1992-06-03 Refractory plate for use in sliding closure unit Expired - Lifetime EP0522284B1 (en)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
CH2081/91A CH683969A5 (en) 1991-07-12 1991-07-12 Fireproof closure plate on the spout of a vessel containing molten metal.
CH2081/91 1991-07-12

Publications (2)

Publication Number Publication Date
EP0522284A1 EP0522284A1 (en) 1993-01-13
EP0522284B1 true EP0522284B1 (en) 1996-08-28

Family

ID=4225464

Family Applications (1)

Application Number Title Priority Date Filing Date
EP92109352A Expired - Lifetime EP0522284B1 (en) 1991-07-12 1992-06-03 Refractory plate for use in sliding closure unit

Country Status (9)

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US (1) US5251794A (en)
EP (1) EP0522284B1 (en)
JP (1) JPH05185203A (en)
CA (1) CA2070798A1 (en)
CH (1) CH683969A5 (en)
DE (1) DE59206984D1 (en)
FI (1) FI98499C (en)
GR (1) GR3021482T3 (en)
ZA (1) ZA924088B (en)

Families Citing this family (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
ES2113271B1 (en) * 1994-09-07 1999-01-01 Krosaki Corp FIXING STRUCTURE OF METAL PLATE FRAME FOR SLIDING NOZZLE.
MY129237A (en) * 1998-03-17 2007-03-30 Stopinc Ag Valve plate and a sliding gate valve at the outlet of a vessel containing molten metal
TW553788B (en) * 2000-04-21 2003-09-21 Vesuvius Crucible Co One-piece inner nozzle and clamping device for an inner nozzle
JP4159075B2 (en) * 2001-05-23 2008-10-01 黒崎播磨株式会社 Sliding gate plate
TWI717455B (en) * 2016-01-25 2021-02-01 比利時商維蘇威集團股份有限公司 Sliding gate valve plate, metal can and sliding gate valve

Family Cites Families (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE2102059A1 (en) * 1971-01-16 1972-08-03 Didier-Werke Ag, 6200 Wiesbaden Slide closure for containers containing liquid melt, in particular pouring ladles
IE36371L (en) * 1971-06-07 1972-12-07 Uss Eng & Consult Gate valve for a foundry ladle
US4415103A (en) * 1979-09-07 1983-11-15 Uss Engineers And Consultants, Inc. Full throttle valve and method of tube and gate change
CH647966A5 (en) * 1980-05-09 1985-02-28 Stopinc Ag LOCKING PLATE UNIT FOR A SLIDING LOCK FOR METALLURGICAL MELTING CASES.
GB2117498B (en) * 1982-04-01 1985-07-17 Flogates Ltd Sliding gate valves
WO1988001211A1 (en) * 1986-08-20 1988-02-25 Stopinc Aktiengesellschaft Sliding stopper for the spout of a molten bath container
CH675976A5 (en) * 1988-01-15 1990-11-30 Stopinc Ag

Also Published As

Publication number Publication date
CH683969A5 (en) 1994-06-30
FI922833A0 (en) 1992-06-17
JPH05185203A (en) 1993-07-27
FI98499B (en) 1997-03-27
CA2070798A1 (en) 1993-01-13
US5251794A (en) 1993-10-12
GR3021482T3 (en) 1997-01-31
FI98499C (en) 1997-07-10
ZA924088B (en) 1993-02-24
DE59206984D1 (en) 1996-10-02
EP0522284A1 (en) 1993-01-13
FI922833A (en) 1993-01-13

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