EP2516086B1 - Sliding closure for a metallurgical container - Google Patents

Sliding closure for a metallurgical container Download PDF

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Publication number
EP2516086B1
EP2516086B1 EP10801135.4A EP10801135A EP2516086B1 EP 2516086 B1 EP2516086 B1 EP 2516086B1 EP 10801135 A EP10801135 A EP 10801135A EP 2516086 B1 EP2516086 B1 EP 2516086B1
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EP
European Patent Office
Prior art keywords
sliding closure
inner part
slide unit
sleeve
spout
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Application number
EP10801135.4A
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German (de)
French (fr)
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EP2516086A1 (en
Inventor
Phillipp Ackermann
Werner Keller
Angelo Zingre
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Stopinc AG
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Stopinc AG
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Publication of EP2516086A1 publication Critical patent/EP2516086A1/en
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Publication of EP2516086B1 publication Critical patent/EP2516086B1/en
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    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B22—CASTING; POWDER METALLURGY
    • B22D—CASTING OF METALS; CASTING OF OTHER SUBSTANCES BY THE SAME PROCESSES OR DEVICES
    • 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
    • B22D41/24—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 characterised by a rectilinearly movable plate
    • 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
    • B22D11/103—Distributing the molten metal, e.g. using runners, floats, distributors
    • 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
    • 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
    • B22D41/34—Supporting, fixing or centering means therefor

Definitions

  • the invention relates to a sliding closure for a metallurgical container according to the preamble of claim 1.
  • Slide closures of this type are known in various embodiments.
  • the publication EP 1 119 428 discloses, for example, a sliding closure comprising two refractory closure plates with a metal housing attachable to the container, which accommodates the upper closure plate and a container-side refractory inlet sleeve. Serving for opening and closing a spout opening lower closure or slide plate is in a metal slide unit arranged, which also receives a subsequent to the slide plate refractory spout.
  • the refractory parts of the sliding closure in particular the two closure plates, but also the container-side inlet sleeve and the sealing plate sealingly adjoining spout are exposed to heavy wear and must therefore be replaced regularly.
  • sliding closures which comprise a slide plate displaceable between two stationary closure plates (cf., for example, US Pat EP 0 891 829 A1 ), in which the housing attachable to the container in addition to the two stationary closure plates and the inlet sleeve and the spout or the pouring tube receives.
  • the present invention has been based on the object to provide a sliding closure of the type mentioned, which better withstand the resulting during casting high temperatures.
  • the slide unit is provided with a spout enclosing the inner part, which is detachably connected to the remaining part of the slide unit and this thermally expandable, just at the points where the highest temperatures prevail, the stresses in the slide unit degraded and the risk of cracks occurring is considerably reduced.
  • sliding closures which are equipped with two or more closure plates, it is in particular the slide unit, which is additionally exposed from below a strong heating and can be effectively protected by the inventive two-part design.
  • the invention is also applicable to sliding closures comprising two fixed closure plates and a slide plate slidable therebetween.
  • the housing attachable to the container, which receives in its lower part the spout (or a pouring tube) and is exposed from the bottom of the particularly strong heating.
  • Fig.1 shows a sliding closure 1 for a metallurgical container, which may be, for example, used in a continuous casting plant ladle for molten steel.
  • the container itself is not apparent from the drawing.
  • the sliding closure 1 has a fastened to the container metal housing 2, in which an upper closure plate 3 is held from a refractory material, pressed against a container side, also refractory inlet sleeve 4, which is guided into a container hole punch, not shown.
  • FIG. 1 Another, lower closure plate 5, a so-called slide plate is held in a longitudinally movable metal slide unit 6 thereof and in an example of the EP 1 119 428 in a known and therefore not described manner pressed against the upper closure plate 3.
  • a subsequent to the slide plate 5 refractory spout 8 is further arranged, which is pressed by means of a Verwoodsorgans 9 to the slide plate 5.
  • the through the inlet sleeve 4 and the upper closure plate 3 with its through hole 3a defined spout opening 10 can be partially or completely closed.
  • the connection 11 of the slide unit 6 is indicated on a linear drive effecting displacement.
  • the two closure plates 3, 5 are centered in the respective housing by means of centering members 13 in a manner known per se and not further described below.
  • the slide plate 5 and the spout 8 receiving slide unit 6 is provided with a spout 8 surrounding the inner part 7a, which is detachably connected to the remaining part 7b of the slide unit 6 and this thermally expandable.
  • the inner part 7a which also made Fig. 2 it can be seen, two diametrically opposite flange 17, 18, with which it can be guided into corresponding grooves 19 of the remaining slide unit 7b and then screwed with this.
  • shoulder screws 20 and for this in the one flange 17, a fitting opening 21 and in the other flange 18 a slot 22 are provided.
  • the one fitting shoulder screw 20 and the fitting opening 21 of the inner part which is in a bayonet-type connection in its lower region 27 with the already mentioned bracing member 9 for bracing the spout 8 with the overlying closure plate 5, allows the slot 22 a thermal expansion of the inner part 7a transverse to the axis A of the spout opening 10.
  • a radial air gap 28 is present, which forms a kind of temperature barrier between the spout 8 and the two-part slide unit 6.
  • the fitting shoulder screws 20 screwed into the slide unit 6 are advantageously arranged in a longitudinal center plane of the slide fastener.
  • that flange part 22 of the inner part is provided with the elongated hole 22 for the fitting shoulder screw 20, which is closer to the axis A of the spout opening during displacement of the slide unit 6 in the closed position and therefore, for example, in a throttle position the sliding closure of the higher temperature is exposed.
  • the attachable to the container housing 2 is in two parts and provided with a the inlet sleeve 4 enclosing, preferably annular inner part 2a.
  • This serving as a wear ring inner part 2a is detachably connected via a number of axially directed, distributed over the circumference fastening bolts 30 with the rest of the housing 2b.
  • the inner part 2a has a conical, upwardly tapering inner surface 31, which rests on a conical, upwardly tapering outer shoulder surface 32 of the inlet sleeve 4.
  • Cylindrical inner surfaces 33, 34 adjoin the conical inner surface 31, wherein a radial air gap 35 is present between these cylindrical inner surfaces 33, 34 and the outer circumference of the inlet sleeve 4.
  • the housing 2 which can be fastened to the container, but above all the housing frame 7 of the slide unit 6, is designed in two parts and has an inner part 2a enclosing the pouring sleeve 8 or the inlet sleeve 4; 7a is provided, are formed with the air gaps and thermal expansion is possible, just in the places where the greatest temperatures prevail, the stresses in the housing frame 7 and in the housing 2 degraded and the risk of cracks, significantly reduced.
  • sliding closures which are equipped with two closure plates, it is the slide unit 6, which is additionally exposed from below a strong heating and can be effectively protected by the inventive two-part design.
  • this upper, the inlet sleeve 4 centering designed as a ring inner part 2a and on the other hand, a housing 2 containing and the inlet sleeve 4 partially surrounding inner part 2a ' intended.
  • This inner part 2a ' is formed in two parts and, advantageously, it is arranged at a distance from the inlet sleeve 4.
  • the invention is also applicable to sliding closures comprising two fixed closure plates and a slide plate slidable therebetween.
  • the housing attachable to the container, which receives in its lower part the spout (or a pouring tube) and is exposed from the bottom of the particularly strong heating.
  • This housing may be formed in two parts at least in the area surrounding the spout sleeve and have a thermally expandable inner part.
  • this housing could also be equipped with a further inner part in the region of the inlet sleeve.
  • a housing material is particularly suitable gray cast iron or ductile iron.
  • the inner parts 7a, 2a and the other housing sections 7b, 2b can also consist of different materials.
  • the fasteners such. B. the passport shoulder screws 20 are also made of a temperature-resistant material as possible.

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  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Casting Support Devices, Ladles, And Melt Control Thereby (AREA)
  • Closures For Containers (AREA)

Description

Die Erfindung betrifft einen Schiebeverschluss für einen metallurgischen Behälter gemäss dem Oberbegriff des Anspruches 1.The invention relates to a sliding closure for a metallurgical container according to the preamble of claim 1.

Schiebeverschlüsse dieser Art sind in verschiedenen Ausgestaltungen bekannt. Die Druckschrift EP 1 119 428 offenbart beispielsweise einen zwei feuerfeste Verschlussplatten umfassenden Schiebeverschluss mit einem am Behälter befestigbaren metallenen Gehäuse, der die obere Verschlussplatte sowie eine behälterseitige feuerfeste Einlaufhülse aufnimmt. Die zum Öffnen und Schliessen einer Ausgussöffnung dienende untere Verschluss- bzw. Schieberplatte ist in einer metallenen Schiebereinheit angeordnet, die zusätzlich eine an die Schieberplatte anschliessende feuerfeste Ausgusshülse aufnimmt.Slide closures of this type are known in various embodiments. The publication EP 1 119 428 discloses, for example, a sliding closure comprising two refractory closure plates with a metal housing attachable to the container, which accommodates the upper closure plate and a container-side refractory inlet sleeve. Serving for opening and closing a spout opening lower closure or slide plate is in a metal slide unit arranged, which also receives a subsequent to the slide plate refractory spout.

Bekanntlich werden die feuerfesten Teile des Schiebeverschlusses, insbesondere die beiden Verschlussplatten, aber auch die behälterseitige Einlaufhülse sowie die an die Schieberplatte dichtend anschliessende Ausgusshülse einem starken Verschleiss ausgesetzt und müssen daher regelmässig ausgewechselt werden.As is known, the refractory parts of the sliding closure, in particular the two closure plates, but also the container-side inlet sleeve and the sealing plate sealingly adjoining spout are exposed to heavy wear and must therefore be replaced regularly.

Durch die beim Giessen entstehenden hohen Temperaturen wird aber auch der die Einlaufhülse und die obere Verschlussplatte aufnehmende Gehäuse sowie auch der die Schieberplatte und die diese Ausgusshülse beinhaltende Schiebereinheit stark beansprucht, insbesondere in dem die Ausgusshülse bzw. die Einlaufhülse umschliessenden, nahe der Durchflussöffnung liegenden Bereich, wo die grössten Temperaturen herrschen und daher die stärksten Spannungen entstehen. Dazu kommt, dass der Schiebeverschluss eine starke Erwärmung von unten erfährt, so dass insbesondere diese die Ausgusshülse aufnehmende Schiebereinheit extrem stark thermisch beansprucht wird.By the resulting high temperatures during casting but also the inlet sleeve and the upper closure plate receiving housing as well as the slide plate and this spout sleeve-containing slide unit is heavily stressed, especially in the spout and the inlet sleeve enclosing, lying near the flow opening area where the highest temperatures prevail and therefore the strongest tensions arise. In addition, the sliding closure undergoes a strong heating from below, so that in particular this pouring sleeve receiving the slide unit is subjected to extremely high levels of thermal stress.

Die gleiche Problematik ergibt sich auch bei Schiebeverschlüssen, die eine zwischen zwei ortsfesten Verschlussplatten verschiebbare Schieberplatte umfassen (vgl. z.B. EP 0 891 829 A1 ), bei denen das am Behälter befestigbare Gehäuse neben den beiden ortsfesten Verschlussplatten auch die Einlaufhülse sowie die Ausgusshülse bzw. das Giessrohr aufnimmt.The same problem also arises with sliding closures, which comprise a slide plate displaceable between two stationary closure plates (cf., for example, US Pat EP 0 891 829 A1 ), in which the housing attachable to the container in addition to the two stationary closure plates and the inlet sleeve and the spout or the pouring tube receives.

Der vorliegenden Erfindung wurde die Aufgabe zugrundegelegt, einen Schiebeverschluss der eingangs genannten Art zu schaffen, der den beim Giessen entstehenden hohen Temperaturen besser standhält.The present invention has been based on the object to provide a sliding closure of the type mentioned, which better withstand the resulting during casting high temperatures.

Die Aufgabe wird erfindungsgemäss durch einen Schiebeverschluss nach den Merkmalen des Anspruches 1 gelöst.The object is achieved according to the invention by a sliding closure according to the features of claim 1.

Weitere bevorzugte Ausgestaltungen des erfindungsgemässen Schiebeverschlusses bilden den Gegenstand der abhängigen Ansprüche.Further preferred embodiments of the inventive sliding closure form the subject of the dependent claims.

Dadurch, dass erfindungsgemäss die Schiebereinheit mit einem die Ausgusshülse umschliessenden Innenteil versehen ist, der mit dem übrigen Teil der Schiebereinheit lösbar verbunden und diesem gegenüber thermisch ausdehnbar ist, werden gerade an den Stellen, wo die grössten Temperaturen herrschen, die Spannungen in der Schiebereinheit abgebaut und die Gefahr, dass Risse entstehen, erheblich reduziert.Characterized in that according to the invention, the slide unit is provided with a spout enclosing the inner part, which is detachably connected to the remaining part of the slide unit and this thermally expandable, just at the points where the highest temperatures prevail, the stresses in the slide unit degraded and the risk of cracks occurring is considerably reduced.

Bei Schiebeverschlüssen, die mit zwei oder mehreren Verschlussplatten ausgestattet sind, ist es insbesondere die Schiebereinheit, die zusätzlich von unten einer starken Erwärmung ausgesetzt ist und durch die erfindungsgemässe zweiteilige Ausgestaltung wirksam geschont werden kann.In sliding closures, which are equipped with two or more closure plates, it is in particular the slide unit, which is additionally exposed from below a strong heating and can be effectively protected by the inventive two-part design.

Die Erfindung ist jedoch auch bei Schiebeverschlüssen anwendbar, die zwei ortsfeste Verschlussplatten und eine dazwischen verschiebbare Schieberplatte umfassen. Hier ist es das am Behälter befestigbare Gehäuse, der in seinem unteren Bereich die Ausgusshülse (oder ein Giessrohr) aufnimmt und von unten der besonders starken Erwärmung ausgesetzt ist.However, the invention is also applicable to sliding closures comprising two fixed closure plates and a slide plate slidable therebetween. Here it is the housing attachable to the container, which receives in its lower part the spout (or a pouring tube) and is exposed from the bottom of the particularly strong heating.

Die Erfindung wird nachfolgend anhand der Zeichnung näher erläutert. Es zeigen:

Fig. 1
ein Ausführungsbeispiel des erfindungsgemässen Schiebeverschlusses im Längsschnitt;
Fig. 2
einen Teil des Schiebeverschlusses nach Fig. 1 in perspektivischer Explosionsdarstellung, und
Fig. 3
einen Teil des Schiebeverschlusses nach Fig. 1 im Querschnitt entlang der Achse der Durchflussöffnung.
The invention will be explained in more detail with reference to the drawing. Show it:
Fig. 1
an embodiment of the inventive slide closure in longitudinal section;
Fig. 2
a part of the sliding closure after Fig. 1 in an exploded perspective view, and
Fig. 3
a part of the sliding closure after Fig. 1 in cross section along the axis of the flow opening.

Fig.1 zeigt einen Schiebeverschluss 1 für einen metallurgischen Behälter, bei dem es sich beispielsweise um eine in einer Stranggiessanlage verwendete Pfanne für Stahlschmelze handeln kann. Der Behälter selber ist aus der Zeichnung nicht ersichtlich. Der Schiebeverschluss 1 weist ein am Behälter befestigbares metallenes Gehäuse 2 auf, in welchem eine obere Verschlussplatte 3 aus einem feuerfesten Material gehalten ist, angepresst an eine behälterseitige, ebenfalls feuerfeste Einlaufhülse 4, die in einen nicht dargestellten Behälter-Lochstein hineingeführt wird. Fig.1 shows a sliding closure 1 for a metallurgical container, which may be, for example, used in a continuous casting plant ladle for molten steel. The container itself is not apparent from the drawing. The sliding closure 1 has a fastened to the container metal housing 2, in which an upper closure plate 3 is held from a refractory material, pressed against a container side, also refractory inlet sleeve 4, which is guided into a container hole punch, not shown.

Eine weitere, untere Verschlussplatte 5, eine sogenannte Schieberplatte, wird in einer längsbeweglichen metallenen Schiebereinheit 6 derselben gehalten und in einer beispielsweise aus der EP 1 119 428 an sich bekannten und daher nicht näher beschriebenen Weise an die obere Verschlussplatte 3 angepresst. In der Schiebereinheit 6 ist ferner eine an die Schieberplatte 5 anschliessende feuerfeste Ausgusshülse 8 angeordnet, die mittels eines Verspannungsorgans 9 an die Schieberplatte 5 angepresst wird. Durch ein Verschieben der Schiebereinheit 6 und der darin eingesetzten Schieberplatte 5 aus der in Fig. 1 dargestellten Öffnungsstellung in eine Drossel- oder Schliessstellung kann die durch die Einlaufhülse 4 und die obere Verschlussplatte 3 mit ihrer Durchgangsöffnung 3a definierte Ausgussöffnung 10 teilweise oder ganz geschlossen werden. In Fig. 1 ist der Anschluss 11 der Schiebereinheit 6 an einen das Verschieben bewirkenden Linearantrieb angedeutet.Another, lower closure plate 5, a so-called slide plate is held in a longitudinally movable metal slide unit 6 thereof and in an example of the EP 1 119 428 in a known and therefore not described manner pressed against the upper closure plate 3. In the slide unit 6, a subsequent to the slide plate 5 refractory spout 8 is further arranged, which is pressed by means of a Verspannungsorgans 9 to the slide plate 5. By moving the slide unit 6 and the slide plate 5 inserted therein from the in Fig. 1 illustrated opening position in a throttle or closed position, the through the inlet sleeve 4 and the upper closure plate 3 with its through hole 3a defined spout opening 10 can be partially or completely closed. In Fig. 1 the connection 11 of the slide unit 6 is indicated on a linear drive effecting displacement.

Die beiden Verschlussplatten 3, 5 sind im jeweiligen Gehäuse mittels Zentrierorgane 13 in einer an sich bekannten und im weiteren nicht näher beschriebenen Weise zentriert.The two closure plates 3, 5 are centered in the respective housing by means of centering members 13 in a manner known per se and not further described below.

Erfindungsgemäss ist der die Schieberplatte 5 und die Ausgusshülse 8 aufnehmende Schiebereinheit 6 mit einem die Ausgusshülse 8 umschliessenden Innenteil 7a versehen, der mit dem übrigen Teil 7b des Schiebereinheit 6 lösbar verbunden und diesem gegenüber thermisch ausdehnbar ist.According to the invention, the slide plate 5 and the spout 8 receiving slide unit 6 is provided with a spout 8 surrounding the inner part 7a, which is detachably connected to the remaining part 7b of the slide unit 6 and this thermally expandable.

Beim dargestellten Ausführungsbeispiel weist der Innenteil 7a, der auch aus Fig. 2 ersichtlich ist, zwei einander diametral gegenüberliegende Flanschteile 17, 18 auf, mit denen er in entsprechende Nuten 19 der übrigen Schiebereinheit 7b hineingeführt und danach mit diesem verschraubt werden kann. Zu diesem Zwecke sind vorzugsweise Passschulterschrauben 20 und für diese in dem einen Flanschteil 17 eine Passöffnung 21 und in dem anderen Flanschteil 18 ein Langloch 22 vorgesehen. Während über die eine Passschulterschraube 20 und die Passöffnung 21 des Innenteils, der in seinem unteren Bereich 27 mit dem bereits erwähnten Verspannungsorgan 9 zur Verspannung der Ausgusshülse 8 mit der darüber liegenden Verschlussplatte 5 in einer bajonettartigen Verbindung steht, positioniert wird, erlaubt das Langloch 22 eine thermische Dehnung des Innenteiles 7a quer zur Achse A der Ausgussöffnung 10. Zwischen dem auf dem Bajonettring 9 von aussen eingreifenden Innenteils und der Ausgusshülse 8 ist ein radialer Luftspalt 28 vorhanden, der eine Art Temperaturbarriere zwischen der Ausgusshülse 8 und der zweiteiligen Schiebereinheit 6 bildet.In the illustrated embodiment, the inner part 7a, which also made Fig. 2 it can be seen, two diametrically opposite flange 17, 18, with which it can be guided into corresponding grooves 19 of the remaining slide unit 7b and then screwed with this. For this purpose, preferably shoulder screws 20 and for this in the one flange 17, a fitting opening 21 and in the other flange 18 a slot 22 are provided. While the one fitting shoulder screw 20 and the fitting opening 21 of the inner part, which is in a bayonet-type connection in its lower region 27 with the already mentioned bracing member 9 for bracing the spout 8 with the overlying closure plate 5, allows the slot 22 a thermal expansion of the inner part 7a transverse to the axis A of the spout opening 10. Between the engaging on the bayonet ring 9 from the outside inner part and the spout 8, a radial air gap 28 is present, which forms a kind of temperature barrier between the spout 8 and the two-part slide unit 6.

Die in die Schiebereinheit 6 eingeschraubten Passschulterschrauben 20 sind mit Vorteil in einer Längsmittelebene des Schiebeverschlusses angeordnet. Vorzugsweise ist derjenige Flanschteil 22 des Innenteils mit dem Langloch 22 für die Passschulterschraube 20 versehen, der beim Verschieben der Schiebereinheit 6 in die Schliessstellung näher zur Achse A der Ausgussöffnung liegt und daher beispielsweise in einer Drosselstellung des Schiebeverschlusses der grösseren Temperatur ausgesetzt wird.The fitting shoulder screws 20 screwed into the slide unit 6 are advantageously arranged in a longitudinal center plane of the slide fastener. Preferably, that flange part 22 of the inner part is provided with the elongated hole 22 for the fitting shoulder screw 20, which is closer to the axis A of the spout opening during displacement of the slide unit 6 in the closed position and therefore, for example, in a throttle position the sliding closure of the higher temperature is exposed.

Bei dem in Fig. 1 dargestellten Ausführungsbeispiel ist auch das am Behälter befestigbare Gehäuse 2 zweiteilig ausgebildet und mit einem die Einlaufhülse 4 umschliessenden, vorzugsweise ringförmigen Innenteil 2a versehen. Dieser als ein Verschleissring dienende Innenteil 2a ist über eine Anzahl von axial gerichteten, über den Umfang verteilten Befestigungsbolzen 30 mit dem übrigen Gehäuse 2b lösbar verbunden. Der Innenteil 2a weist eine konische, sich nach oben verjüngende Innenfläche 31 auf, die auf einer konischen, sich nach oben verjüngenden äusseren Absatzfläche 32 der Einlaufhülse 4 aufliegt. An die konische Innenfläche 31 schliessen sich zylindrische Innenflächen 33, 34 an, wobei zwischen diesen zylindrischen Innenflächen 33, 34 und dem Aussenumfang der Einlaufhülse 4 ein radialer Luftspalt 35 vorhanden ist.At the in Fig. 1 illustrated embodiment, the attachable to the container housing 2 is in two parts and provided with a the inlet sleeve 4 enclosing, preferably annular inner part 2a. This serving as a wear ring inner part 2a is detachably connected via a number of axially directed, distributed over the circumference fastening bolts 30 with the rest of the housing 2b. The inner part 2a has a conical, upwardly tapering inner surface 31, which rests on a conical, upwardly tapering outer shoulder surface 32 of the inlet sleeve 4. Cylindrical inner surfaces 33, 34 adjoin the conical inner surface 31, wherein a radial air gap 35 is present between these cylindrical inner surfaces 33, 34 and the outer circumference of the inlet sleeve 4.

Dadurch, dass das am Behälter befestigbare Gehäuse 2, vor allem aber der Gehäuserahmen 7 der Schiebereinheit 6 zweiteilig ausgebildet und mit einem die Ausgusshülse 8 bzw. die Einlaufhülse 4 umschliessenden Innenteil 2a; 7a versehen ist, mit dem Luftspalten gebildet werden und thermische Ausdehnung ermöglicht wird, werden gerade an den Stellen, wo die grössten Temperaturen herrschen, die Spannungen im Gehäuserahmen 7 bzw. im Gehäuse 2 abgebaut und die Gefahr, dass Risse entstehen, erheblich reduziert. Bei Schiebeverschlüssen, die mit zwei Verschlussplatten ausgestattet sind, ist es die Schiebereinheit 6, die zusätzlich von unten einer starken Erwärmung ausgesetzt ist und durch die erfindungsgemässe zweiteilige Ausgestaltung wirksam geschont werden kann.Due to the fact that the housing 2 which can be fastened to the container, but above all the housing frame 7 of the slide unit 6, is designed in two parts and has an inner part 2a enclosing the pouring sleeve 8 or the inlet sleeve 4; 7a is provided, are formed with the air gaps and thermal expansion is possible, just in the places where the greatest temperatures prevail, the stresses in the housing frame 7 and in the housing 2 degraded and the risk of cracks, significantly reduced. In sliding closures, which are equipped with two closure plates, it is the slide unit 6, which is additionally exposed from below a strong heating and can be effectively protected by the inventive two-part design.

Gemäss Fig. 3 ist zum einen dieser obere, die Einlaufhülse 4 zentrierende, als Ring ausgebildeter Innenteil 2a und zum andern ein im Gehäuse 2 enthaltender und die Einlaufhülse 4 teilweise umgebender Innenteil 2a' vorgesehen. Dieser Innenteil 2a' ist zweiteilig ausgebildet und vorteilhaft ist er beabstandet zur Einlaufhülse 4 angeordnet.According to Fig. 3 on the one hand, this upper, the inlet sleeve 4 centering, designed as a ring inner part 2a and on the other hand, a housing 2 containing and the inlet sleeve 4 partially surrounding inner part 2a ' intended. This inner part 2a 'is formed in two parts and, advantageously, it is arranged at a distance from the inlet sleeve 4.

Der Erfindungsgedanke ist jedoch auch bei Schiebeverschlüssen anwendbar, die zwei ortsfeste Verschlussplatten und eine dazwischen verschiebbare Schieberplatte umfassen. Hier ist es das am Behälter befestigbare Gehäuse, der in seinem unteren Bereich die Ausgusshülse (oder ein Giessrohr) aufnimmt und von unten der besonders starken Erwärmung ausgesetzt ist. Dieses Gehäuse kann zumindest in dem die Ausgusshülse umschliessenden Bereich zweiteilig ausgebildet und einen thermisch ausdehnbaren Innenteil aufweisen. Selbstverständlich könnte jedoch dieses Gehäuse auch mit einem weiteren Innenteil im Bereich der Einlaufhülse ausgestattet sein.However, the invention is also applicable to sliding closures comprising two fixed closure plates and a slide plate slidable therebetween. Here it is the housing attachable to the container, which receives in its lower part the spout (or a pouring tube) and is exposed from the bottom of the particularly strong heating. This housing may be formed in two parts at least in the area surrounding the spout sleeve and have a thermally expandable inner part. Of course, however, this housing could also be equipped with a further inner part in the region of the inlet sleeve.

Als Gehäusematerial eignet sich insbesondere Grauguss oder Sphäroguss. Die Innenteile 7a, 2a und die übrigen Gehäusepartien 7b, 2b können dabei auch aus unterschiedlichen Materialien bestehen. Die Befestigungsmittel wie z. B. die Passschulterschrauben 20 bestehen ebenfalls aus einem möglichst temperaturbeständigen Material.As a housing material is particularly suitable gray cast iron or ductile iron. The inner parts 7a, 2a and the other housing sections 7b, 2b can also consist of different materials. The fasteners such. B. the passport shoulder screws 20 are also made of a temperature-resistant material as possible.

Claims (11)

  1. Sliding closure for a metallurgical container comprising at least two refractory closing plates (3; 5), of which one is arranged in a metallic slide unit (6) and is used to open and close a spout opening (10), and the at least one further closing plate (3) is arranged in a metallic housing (2) that can be fastened to the container, whereby the slide unit (6) additionally accommodating a lower refractory spout sleeve (8), which is adjoining with a bracing component (9) the slide plate, characterised in that
    at least one additional inner part (7a) is arranged in the slide unit (6), which respectively comprises the sleeve (8) and is detachably connected with the slide unit and to this thermal extendable, whereby between the inner part (7a) engaging from the outside on the bracing component (9) and the spout sleeve (8) a radial air gap (28) is provided, which provides a kind of a thermal barrier between the spout sleeve (8) and the two-part slide unit (6).
  2. Sliding closure according to Claim 1, characterised in that the inner part (7a) is annular in form, is arranged coaxially to the outlet sleeve (8) and is detachably connected by a number of axially directed fastening means (20) with the other part (7b) of the slide unit (6).
  3. Sliding closure according to Claim 2, characterised in that the at least in one direction flexible inner part (7a) enclosing the spout sleeve (8) is provided with two diametrically opposed flange parts (17, 18), with which it can be introduced into corresponding grooves (19) of the rest of the slide unit and which are provided with openings (21, 22) for the fastening means.
  4. Sliding closure according to Claim 3, characterised in that the fastening means respectively comprise a fitted shoulder screw (20), whereby the one flange part (17) having a fitted opening (21) and the other having a slot hole (22) for passing through the respective fitted shoulder screw (20).
  5. Sliding closure according to Claim 4, characterised in that the fitted shoulder screws (20) screwed into this slide unit (6) are arranged in a longitudinal centre plane of the sliding closure.
  6. Sliding closure according to Claim 5, characterised in that the flange part (18) of the inner part (7a) is provided with the slot hole (22) for the fitted shoulder screw (20), which lies closer to the axis (A) of the spout opening (10) upon displacing the slide unit (6) in the closing direction.
  7. Sliding closure according to any of Claims 3 to 6, characterised in that the inner part (7a) is connected, in the manner of a bayonet, to a bracing component (9) for bracing the spout sleeve (8) to the upper lying closing plate (5).
  8. Sliding closure according to Claim 7, characterised in that there is a radial air gap (28) between the inner part (7a) engaging from the outside on the bracing component (9) and the spout sleeve (8).
  9. Sliding closure according to Claim 1, characterised in that the housing (2) is having a container side upper refractory inlet sleeve (4), whereby an inner part (2a') contained in the housing (2) surrounding the inlet sleeve (4) is formed in a number of parts.
  10. Sliding closure according to Claim 9, characterised in that the inner part (2a) of the housing (2), that can be fastened to the container enclosing the inlet sleeve (4) arranged above the inner part (2a'), has a conical, upwardly tapering inner surface (31), which lies on a conical, upwardly tapering outer platform surface (32) of the inlet sleeve (4).
  11. Sliding closure according to Claim 10, characterised in that the inner part (2a) having cylindrical inner surfaces (33, 34) adjoining the conical inner surface (31), whereby there being a radial air gap (35) between these cylindrical inner surfaces (33, 34) and the outer circumference of the inlet sleeve (4).
EP10801135.4A 2009-12-21 2010-12-20 Sliding closure for a metallurgical container Active EP2516086B1 (en)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
CH02016/09A CH702467B1 (en) 2009-12-21 2009-12-21 Sliding closure for a metallurgical container.
PCT/EP2010/007790 WO2011085787A1 (en) 2009-12-21 2010-12-20 Sliding closure for a metallurgical container

Publications (2)

Publication Number Publication Date
EP2516086A1 EP2516086A1 (en) 2012-10-31
EP2516086B1 true EP2516086B1 (en) 2018-11-07

Family

ID=43558154

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Application Number Title Priority Date Filing Date
EP10801135.4A Active EP2516086B1 (en) 2009-12-21 2010-12-20 Sliding closure for a metallurgical container

Country Status (6)

Country Link
US (1) US8939331B2 (en)
EP (1) EP2516086B1 (en)
KR (1) KR101872036B1 (en)
CN (1) CN102834205B (en)
CH (1) CH702467B1 (en)
WO (1) WO2011085787A1 (en)

Families Citing this family (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP2371471A1 (en) * 2010-03-19 2011-10-05 Vesuvius Group S.A Internal nozzle for transferring liquid metal contained in a container, system for clamping said nozzle and pouring device
CN210059791U (en) * 2017-11-10 2020-02-14 维苏威集团有限公司 Bottom plate assembly comprising bayonet-type free liquid collecting nozzle
EP3851225A1 (en) 2020-01-15 2021-07-21 Refractory Intellectual Property GmbH & Co. KG Sliding closure for a metallurgical container
CN113000830A (en) * 2021-02-25 2021-06-22 佟长功 Safe refractory molten steel flow controller

Family Cites Families (8)

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Publication number Priority date Publication date Assignee Title
US4561573A (en) * 1982-08-20 1985-12-31 Flo-Con Systems, Inc. Valve and replaceable collector nozzle
US4582232A (en) * 1984-06-19 1986-04-15 Flo-Con Systems, Inc. Valve, clamp, refractory and method
DE3500866A1 (en) * 1985-01-12 1986-07-17 Stopinc Ag, Baar Sliding gate for the nozzle on metallurgical vessels, in particular steel-casting ladles
DE3500865A1 (en) 1985-01-12 1986-07-17 Stopinc Ag, Baar Sliding gate, in particular for vessels containing molten steel
DE59204770D1 (en) * 1991-04-06 1996-02-01 Technometal Ges Fuer Metalltec SLIDING CLOSURE FOR MELTING VESSELS
JPH11129064A (en) * 1997-07-16 1999-05-18 Stopinc Ag Slide closing device for container containing molten metal
BR9912141A (en) * 1998-07-26 2001-11-20 Stopinc Ag Sliding gate valve for a container containing molten metal
WO2003080274A1 (en) * 2002-03-25 2003-10-02 Stopinc Aktiengesellschaft Method for operating a sliding gate, and sliding gate

Non-Patent Citations (1)

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Title
None *

Also Published As

Publication number Publication date
CN102834205A (en) 2012-12-19
CN102834205B (en) 2016-07-06
CH702467A2 (en) 2011-06-30
WO2011085787A1 (en) 2011-07-21
EP2516086A1 (en) 2012-10-31
KR101872036B1 (en) 2018-06-27
KR20120106770A (en) 2012-09-26
CH702467B1 (en) 2021-07-15
US8939331B2 (en) 2015-01-27
US20120273532A1 (en) 2012-11-01

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