EP0791419A1 - Sliding gate closure for opening and closing the outlet of a casting vessel for molten metals - Google Patents

Sliding gate closure for opening and closing the outlet of a casting vessel for molten metals Download PDF

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Publication number
EP0791419A1
EP0791419A1 EP97100536A EP97100536A EP0791419A1 EP 0791419 A1 EP0791419 A1 EP 0791419A1 EP 97100536 A EP97100536 A EP 97100536A EP 97100536 A EP97100536 A EP 97100536A EP 0791419 A1 EP0791419 A1 EP 0791419A1
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EP
European Patent Office
Prior art keywords
steel frame
slide
slide plate
pouring spout
pressure plate
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Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Granted
Application number
EP97100536A
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German (de)
French (fr)
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EP0791419B1 (en
Inventor
Heinz-Dieter Hannes
Rolf Himmler
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Zimmermann and Jansen GmbH
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Zimmermann and Jansen GmbH
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Publication of EP0791419A1 publication Critical patent/EP0791419A1/en
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    • BPERFORMING OPERATIONS; TRANSPORTING
    • B22CASTING; POWDER METALLURGY
    • B22DCASTING OF METALS; CASTING OF OTHER SUBSTANCES BY THE SAME PROCESSES OR DEVICES
    • B22D41/00Casting melt-holding vessels, e.g. ladles, tundishes, cups or the like
    • B22D41/14Closures
    • B22D41/22Closures 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
    • B22D41/28Plates therefor
    • BPERFORMING OPERATIONS; TRANSPORTING
    • B22CASTING; POWDER METALLURGY
    • B22DCASTING OF METALS; CASTING OF OTHER SUBSTANCES BY THE SAME PROCESSES OR DEVICES
    • B22D41/00Casting melt-holding vessels, e.g. ladles, tundishes, cups or the like
    • B22D41/14Closures
    • B22D41/22Closures 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
    • B22D41/40Means for pressing the plates together

Definitions

  • the invention relates to a slide closure for opening and closing the outlet channel of a casting vessel for metallic melts, in particular steel, according to the preamble of claim 1.
  • the slide closure comprises a slide plate 1 with a central outlet opening 10, which corresponds in the open position to the outlet channel of the casting vessel, a pouring spout 6 attached to the underside of the slide plate with a pipe section 11 made of refractory (FF) material and a trough-like steel frame 2, within which the slide plate 1 is held immovably.
  • the fixing of the slide plate 1 within the steel frame 2 is ensured by a layer of refractory mortar or the like ceramic casting compound formed between the slide plate and the steel frame.
  • the corresponding mortar layer is identified by the reference number 3 in FIG.
  • thermodynamic spring elements act on the underside of the steel frame 2. These serve to hold the slide plate 1 in tight contact with a head plate arranged on the underside of the casting vessel.
  • These thermodynamic spring elements are provided with the reference number 4 in FIG. In addition to FIG. 1, reference is made to the explanations in DE 19 51 447 B1.
  • the pouring spout may be deflected laterally.
  • Such a deflection has the result that the steel frame bulges downward on one side, while it is pressed inwards on the opposite side with a corresponding displacement of mortar.
  • This material displacement is possible due to the fact that the thickness of the mortar layer is relatively large and is usually between about 10 to 15 mm, in particular about 12 mm. It is a high alumina mortar that is only pressure-resistant to a limited extent.
  • Figure 2 shows a photograph of a spout deflected laterally in the manner described above.
  • FIG. 3 shows a photograph of the slide closure according to FIG. 2 cut open in the longitudinal direction.
  • the fracture line 12 described with reference to FIG. 1 can be seen very well there.
  • the present invention has for its object to improve a slide closure of the above type so that a buckling of the steel frame upon attack by lateral forces on the pouring spout and thus a breakage of the pouring spout in the transition area to the steel frame is prevented.
  • the essence of the present invention thus lies in the arrangement of a pressure plate on the underside of the steel frame.
  • This pressure plate has a central recess for the passage of the pipe section of the pouring spout.
  • the pressure plate ensures an even pressure distribution through the thermodynamic spring elements 4 exerted pressure forces on the steel frame and thus also on the slide plate 1.
  • the pressure plate mentioned prevents the underside of the steel frame 2 from bulging outwards and inwards. The result is that the pouring spout remains in its original position despite lateral forces, ie it is no longer deflected laterally. This in turn means that breakage of the pouring spout in the transition area to the steel frame is reliably avoided.
  • a slide closure designed according to the invention neither the bulge 5 and compression 7 on the underside of the steel frame 2 nor the break 12 occur in the transition region between the pouring spout and the steel frame 2 according to FIG. 1.
  • the mortar layer 3 between the slide plate 1 and the steel frame 2 is reduced to a minimum, preferably to a thickness which is approximately 4 to 7%, in particular approximately 6%, of the total height of the slide plate, mortar layer, steel frame and pressure plate.
  • This small layer thickness also contributes to the stability of the slide closure. Bulging the steel frame inwards or compressing the steel frame according to FIG. 1 is no longer possible due to the minimal thickness of the mortar layer. There is material that could be displaced accordingly.
  • the stability of the overall construction can also be increased by surrounding the pipe section of the pouring spout with a steel jacket which extends through the pressure plate and the steel frame to the underside of the slide plate and is supported directly on the latter.
  • the slide closure according to FIG. 4 also comprises a slide plate 1 with an outlet opening 10, a pouring spout 6 with a pipe section 11 assigned to the outlet opening 10, and a trough-like steel frame 2, within which the slide plate 1 is placed.
  • the outlet nozzle 6 or its tube section 11 is surrounded by a steel jacket 13 which extends through the steel frame 2 to the underside of the slide plate 1 with support on the latter.
  • the steel jacket 13 is also welded to the steel frame 2.
  • the welded joint along the edge of the opening in the bottom of the trough-like steel frame 2, through which the pouring spout including the steel jacket 13 extends, is identified by the reference number 9.
  • a steel pressure plate 8 is arranged, against which the thermodynamic elements 4 press in use. Through the pressure plate 8, the corresponding spring force is evenly distributed on the bottom of the steel frame 2 and thus on the slide plate 1. Furthermore, the pressure plate 8 prevents buckling or compression of the steel frame 2 or its base, as described with reference to FIG. 1. Thus, the stability of the pouring spout 6 with respect to lateral deflection is increased by the pressure plate 8. In addition, the stability of the pouring spout 6 is increased in that the steel jacket 13 extends both through the pressure plate 8 and through the steel frame 2 through to the underside of the slide plate 1 with support thereon.
  • the thickness of the mortar layer between the underside of the slide plate 1 and the bottom of the trough-like steel frame 2 is reduced to a minimum. This also promotes the stability of the pouring spout against lateral deflection, as stated at the beginning.
  • the thickness of the mortar layer 3 is preferably approximately 4 to 7%, in particular approximately 6% of the total height of the slide plate 1 together with the mortar layer 3, steel frame 2 and pressure plate 8.
  • the pressure plate 8 has a thickness which is approximately 20 to 28%, in particular approximately 23 up to 25% the total height of the slide plate including mortar layer, steel frame and pressure plate.
  • the minimum thickness of the mortar layer 3 is defined by the maximum size of the granular aggregates of the mortar or a corresponding ceramic casting compound.
  • the thickness of the mortar layer 3 is reduced on the underside to such an extent that the height of the slide plate 1, steel frame 2, mortar layer 3 and pressure plate 8 corresponds to that of a conventional construction consisting of slide plate, steel frame and mortar layer according to FIG. In this way, it is not necessary to provide a new slide housing in order to use the slide closure according to the invention.
  • the resulting reduction in the thickness of the mortar layer 3 also has the advantage that no mass is available for displacement for a lateral deflection of the pouring spout 6. Accordingly, the reduced thickness of the mortar layer 3 also contributes to increasing the lateral stability of the pouring spout 6.
  • the pressure plate 8 has a central opening for the passage of the pouring spout 6, the diameter of which is somewhat larger than the outside diameter of the pouring spout 6, namely by about 1 to 3%. This avoids a constraint caused by thermal expansion between the pressure plate 8 and the outer circumference of the pouring spout 6.
  • the pressure plate 8 is preferably spot welded to the outside of the bottom of the trough-like steel jacket 2. In principle, it is also conceivable to push the pressure plate 8 only loosely over the pouring spout 6, because in the assembled state or within the slide housing, the pressure plate 8 is held by the thermodynamic spring elements 4 on the underside of the trough-like steel jacket 2. All features disclosed in the application documents are claimed as essential to the invention, insofar as they are new compared to the prior art, individually or in combination.

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  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Furnace Charging Or Discharging (AREA)
  • Casting Support Devices, Ladles, And Melt Control Thereby (AREA)
  • Waste-Gas Treatment And Other Accessory Devices For Furnaces (AREA)
  • Special Wing (AREA)

Abstract

Sliding stop for opening and closing the outlet of a casting vessel, in particular, for steel consists of a slider plate (1) with a pouring nozzle (6) made up of a refractory pipe segment (11) and a steel skirting frame (2). Fixing of the slider plate within the steel frame takes place by means of a layer (3) of refractory cement or a similar ceramic casting material. The stop comprises frame (2) reinforced from below by a pressure plate (8) with a central opening for the pouring nozzle.

Description

Die Erfindung betrifft einen Schieberverschluß zum Öffnen und Schließen des Auslaufkanals eines Gießgefäßes für metallische Schmelzen, insbesondere Stahl, gemäß dem Oberbegriff des Anspruches 1.The invention relates to a slide closure for opening and closing the outlet channel of a casting vessel for metallic melts, in particular steel, according to the preamble of claim 1.

Derartige Schieberverschlüsse sind allgemein bekannt. Ein solcher ist in Figur 1 im schematischen Längsschnitt dargestellt. Dementsprechend umfaßt der Schieberverschluß eine Schieberplatte 1 mit einer zentralen Auslauföffnung 10, die in öffnungsstellung mit dem Auslaufkanal des Gießgefäßes korrespondiert, einen an der Unterseite der Schieberplatte angesetzten Ausgußstutzen 6 mit einem aus Feuerfest (FF)-Material bestehenden Rohrabschnitt 11 und einen wannenartigen Stahlrahmen 2, innerhalb dem die Schieberplatte 1 unverrückbar gehalten ist. Die Fixierung der Schieberplatte 1 innerhalb des Stahlrahmens 2 wird durch eine zwischen Schieberplatte und Stahlrahmen ausgebildete Schicht aus Feuerfest-Mörtel oder dergleichen Keramik-Gießmasse gewährleistet. Die entsprechende Mörtelschicht ist in Figur 1 mit der Bezugsziffer 3 gekennzeichnet. An der Unterseite des Stahlrahmens 2 greifen sogenannte thermodynamische Federelemente an. Diese dienen dazu, die Schieberplatte 1 in dichter Anlage an einer an der Unterseite des Gießgefäßes angeordneten Kopfplatte zu halten. Diese thermodynamischen Federelemente sind in Figur 1 mit der Bezugsziffer 4 versehen. Ergänzend zu Figur 1 wird auf die Ausführungen in der DE 19 51 447 B1 verwiesen.Such slide closures are generally known. Such is shown in Figure 1 in a schematic longitudinal section. Accordingly, the slide closure comprises a slide plate 1 with a central outlet opening 10, which corresponds in the open position to the outlet channel of the casting vessel, a pouring spout 6 attached to the underside of the slide plate with a pipe section 11 made of refractory (FF) material and a trough-like steel frame 2, within which the slide plate 1 is held immovably. The fixing of the slide plate 1 within the steel frame 2 is ensured by a layer of refractory mortar or the like ceramic casting compound formed between the slide plate and the steel frame. The corresponding mortar layer is identified by the reference number 3 in FIG. So-called thermodynamic spring elements act on the underside of the steel frame 2. These serve to hold the slide plate 1 in tight contact with a head plate arranged on the underside of the casting vessel. These thermodynamic spring elements are provided with the reference number 4 in FIG. In addition to FIG. 1, reference is made to the explanations in DE 19 51 447 B1.

Durch ein dem Ausgußstutzen zugeordnetes Schattenrohr, gehalten durch einen Manipulator, welches in Figur 1 nicht dargestellt ist, kann es zu einer seitlichen Auslenkung des Ausgußstutzens kommen. Eine derartige Auslenkung hat zur Folge, daß der Stahlrahmen an einer Seite sich nach unten ausbeult, während er an der gegenüberliegenden Seite unter entsprechender Verdrängung von Mörtel nach innen gedrückt wird. Diese Materialverdrängung ist möglich aufgrund der Tatsache, daß die Dicke der Mörtelschicht relativ groß ist und in der Regel zwischen etwa 10 bis 15 mm, insbesondere etwa 12 mm beträgt. Es handelt sich um einen hochtonerdehaltigen Mörtel, der nur begrenzt druckfest ist.Through a shadow pipe assigned to the pouring spout, held by a manipulator, which is not shown in FIG. 1, the pouring spout may be deflected laterally. Such a deflection has the result that the steel frame bulges downward on one side, while it is pressed inwards on the opposite side with a corresponding displacement of mortar. This material displacement is possible due to the fact that the thickness of the mortar layer is relatively large and is usually between about 10 to 15 mm, in particular about 12 mm. It is a high alumina mortar that is only pressure-resistant to a limited extent.

Die Folge der erwähnten Belastungen ist, daß der Ausgußstutzen im Übergangsbereich zwischen Rohrabschnitt 11 und Stahlrahmen 2 bricht. In Figur 1 ist die Bruchlinie mit der Bezugsziffer 12 gekennzeichnet.The consequence of the loads mentioned is that the pouring spout breaks in the transition area between the pipe section 11 and the steel frame 2. In Figure 1, the break line is identified by reference number 12.

Figur 2 zeigt eine Fotografie eines in der oben beschriebenen Weise seitlich ausgelenkten Ausgußstutzens. Figur 3 zeigt eine Fotografie des Schieberverschlusses gemäß Figur 2 in Längsrichtung aufgeschnitten. Die anhand der Figur 1 beschriebene Bruchlinie 12 ist dort sehr gut erkennbar.Figure 2 shows a photograph of a spout deflected laterally in the manner described above. FIG. 3 shows a photograph of the slide closure according to FIG. 2 cut open in the longitudinal direction. The fracture line 12 described with reference to FIG. 1 can be seen very well there.

Ausgehend von dem erwähnten Stand der Technik liegt der vorliegenden Erfindung die Aufgabe zugrunde, einen Schieberverschluß der obengenannten Art so zu verbessern, daß ein Ausbeulen des Stahlrahmens bei Angriff von seitlichen Kräften am Ausgußstutzen und damit ein Bruch des Ausgußstutzens im Übergangsbereich zum Stahlrahmen verhindert wird.Based on the prior art mentioned, the present invention has for its object to improve a slide closure of the above type so that a buckling of the steel frame upon attack by lateral forces on the pouring spout and thus a breakage of the pouring spout in the transition area to the steel frame is prevented.

Diese Aufgabe wird durch die kennzeichnenden Merkmale des Anspruches 1 gelöst.This object is achieved by the characterizing features of claim 1.

Der Kern der vorliegenden Erfindung liegt also in der Anordnung einer Druckplatte an der Unterseite des Stahlrahmens. Diese Druckplatte weist eine zentrale Ausnehmung für den Durchtritt des Rohrabschnittes des Ausgußstutzens auf. Die Druckplatte gewährleistet eine gleichmäßige Druckverteilung der durch die thermodynamischen Federelemente 4 ausgeübten Druckkräfte auf den Stahlrahmen und damit auch auf die Schieberplatte 1. Bei auf den Ausgußstutzen seitlich einwirkenden Kräften verhindert die erwähnte Druckplatte ein Ausbeulen der Unterseite des Stahlrahmens 2 nach außen und innen. Die Folge ist, daß auch der Ausgußstutzen trotz seitlich einwirkender Kräfte in seiner ursprünglichen Position bleibt, d. h. nicht mehr seitlich ausgelenkt wird. Dies wiederum hat zur Folge, daß ein Bruch des Ausgußstutzens im Übergangsbereich zum Stahlrahmen sicher vermieden wird. Versuche haben gezeigt, daß bei einem erfindungsgemäß ausgebildeten Schieberverschluß weder die Ausbeulung 5 und Stauchung 7 an der Unterseite des Stahlrahmens 2 noch der Bruch 12 im Übergangsbereich zwischen Ausgußstutzen und Stahlrahmen 2 gemäß Figur 1 auftreten.The essence of the present invention thus lies in the arrangement of a pressure plate on the underside of the steel frame. This pressure plate has a central recess for the passage of the pipe section of the pouring spout. The pressure plate ensures an even pressure distribution through the thermodynamic spring elements 4 exerted pressure forces on the steel frame and thus also on the slide plate 1. When forces act laterally on the pouring spout, the pressure plate mentioned prevents the underside of the steel frame 2 from bulging outwards and inwards. The result is that the pouring spout remains in its original position despite lateral forces, ie it is no longer deflected laterally. This in turn means that breakage of the pouring spout in the transition area to the steel frame is reliably avoided. Experiments have shown that with a slide closure designed according to the invention neither the bulge 5 and compression 7 on the underside of the steel frame 2 nor the break 12 occur in the transition region between the pouring spout and the steel frame 2 according to FIG. 1.

Um die gleiche Einbauhöhe des Schieberverschlusses zu erhalten, wird die Mörtelschicht 3 zwischen Schieberplatte 1 und Stahlrahmen 2 auf ein Minimum reduziert, und zwar vorzugsweise auf eine Dicke, die etwa 4 bis 7 %, insbesondere etwa 6 % der Gesamthöhe von Schieberplatte, Mörtelschicht, Stahlrahmen und Druckplatte beträgt. Auch diese geringe Schichtdicke trägt zur Stabilität des Schieberverschlusses bei. Ein Ausbeulen des Stahlrahmens nach innnen bzw. eine Stauchung 7 des Stahlrahmens gemäß Figur 1 ist aufgrund der minimalen Dicke der Mörtelschicht nicht mehr möglich. Es feht Material, welches entsprechend verdrängt werden könnte.In order to obtain the same installation height of the slide closure, the mortar layer 3 between the slide plate 1 and the steel frame 2 is reduced to a minimum, preferably to a thickness which is approximately 4 to 7%, in particular approximately 6%, of the total height of the slide plate, mortar layer, steel frame and pressure plate. This small layer thickness also contributes to the stability of the slide closure. Bulging the steel frame inwards or compressing the steel frame according to FIG. 1 is no longer possible due to the minimal thickness of the mortar layer. There is material that could be displaced accordingly.

Die Stabilität der Gesamtkonstruktion läßt sich zusätzlich dadurch erhöhen, daß der Rohrabschnitt des Ausgußstutzens mit einem Stahlmantel umgeben wird, der sich durch die Druckplatte und den Stahlrahmen hindurch bis an die Unterseite der Schieberplatte erstreckt und sich an dieser unmittelbar abstützt.The stability of the overall construction can also be increased by surrounding the pipe section of the pouring spout with a steel jacket which extends through the pressure plate and the steel frame to the underside of the slide plate and is supported directly on the latter.

Nachstehend ist ein erfindungsgemäß ausgebildeter Schieberverschluß anhand der Figur 4 näher erläutert. Diese zeigt einen erfindungsgemäß ausgebildeten Schieberverschluß im Längsschnitt ähnlich demjenigen gemäß Figur 1, wobei gleiche Teile mit denselben Bezugsziffern wie in Figur 1 gekennzeichnet sind. Demgemäß umfaßt der Schieberverschluß gemäß Figur 4 ebenfalls eine Schieberplatte 1 mit Auslauföffnung 10, einen der Auslauföffnung 10 zugeordneten Ausgußstutzen 6 mit Rohrabschnitt 11, und einen wannenartigen Stahlrahmen 2, innerhalb dem die Schieberplatte 1 plaziert ist. Der Auslaufstutzen 6 bzw. dessen Rohrabschnitt 11 ist von einem Stahlmantel 13 umgeben, der sich durch den Stahlrahmen 2 hindurch bis an die Unterseite der Schieberplatte 1 unter Abstützung an dieser erstreckt. Der Stahlmantel 13 ist des weiteren mit dem Stahlrahmen 2 schweißverbunden. Die Schweißverbindung längs des Randes der Öffnung im Boden des wannenartigen Stahlrahmens 2, durch die sich der Ausgußstutzen samt Stahlmantel 13 hindurcherstreckt, ist mit der Bezugsziffer 9 gekennzeichnet. An der Unterseite des wannenartigen Stahlrahmens 2 ist eine Druckplatte 8 aus Stahl angeordnet, gegen die im Einsatz die thermodynamischen Elemente 4 drücken. Durch die Druckplatte 8 wird die entsprechende Federkraft gleichmäßig auf den Boden des Stahlrahmens 2 und damit auf die Schieberplatte 1 verteilt. Des weiteren verhindert die Druckplatte 8 ein Ausbeulen oder Stauchen des Stahlrahmens 2, bzw. dessen Bodens, wie anhand der Figur 1 beschrieben. Damit wird durch die Druckplatte 8 die Stabilität des Ausgußstutzens 6 gegenüber seitlicher Auslenkung erhöht. Zusätzlich wird die Stabilität des Ausgußstutzens 6 dadurch erhöht, daß der Stahlmantel 13 sich sowohl durch die Druckplatte 8 als auch durch den Stahlrahmen 2 hindurch bis an die Unterseite der Schieberplatte 1 unter Abstützung an dieser erstreckt.An inventive slide closure is explained in more detail below with reference to FIG. 4. This shows a slide closure designed according to the invention in longitudinal section similar to that according to FIG. 1, the same parts being identified with the same reference numbers as in FIG. 1 are. Accordingly, the slide closure according to FIG. 4 also comprises a slide plate 1 with an outlet opening 10, a pouring spout 6 with a pipe section 11 assigned to the outlet opening 10, and a trough-like steel frame 2, within which the slide plate 1 is placed. The outlet nozzle 6 or its tube section 11 is surrounded by a steel jacket 13 which extends through the steel frame 2 to the underside of the slide plate 1 with support on the latter. The steel jacket 13 is also welded to the steel frame 2. The welded joint along the edge of the opening in the bottom of the trough-like steel frame 2, through which the pouring spout including the steel jacket 13 extends, is identified by the reference number 9. On the underside of the tub-like steel frame 2, a steel pressure plate 8 is arranged, against which the thermodynamic elements 4 press in use. Through the pressure plate 8, the corresponding spring force is evenly distributed on the bottom of the steel frame 2 and thus on the slide plate 1. Furthermore, the pressure plate 8 prevents buckling or compression of the steel frame 2 or its base, as described with reference to FIG. 1. Thus, the stability of the pouring spout 6 with respect to lateral deflection is increased by the pressure plate 8. In addition, the stability of the pouring spout 6 is increased in that the steel jacket 13 extends both through the pressure plate 8 and through the steel frame 2 through to the underside of the slide plate 1 with support thereon.

Um eine unveränderte Einbauhöhe der Anordnung zu erhalten, ist die Dicke der Mörtelschicht zwischen der Unterseite der Schieberplatte 1 und dem Boden des wannenartigen Stahlrahmens 2 auf ein Minimum reduziert. Auch dadurch wird die Stabilität des Ausgußstutzens gegenüber seitlicher Auslenkung gefördert, wie eingangs ausgeführt. Vorzugsweise beträgt die Dicke der Mörtelschicht 3 etwa 4 bis 7 %, inbesondere etwa 6 % der Gesamthöhe von Schieberplatte 1 samt Mörtelschicht 3, Stahlrahmen 2 und Druckplatte 8. Die Druckplatte 8 weist eine Dicke auf, die etwa 20 bis 28 %, insbesondere etwa 23 bis 25 % der Gesamthöhe von Schieberplatte samt Mörtelschicht, Stahlrahmen und Druckplatte beträgt.In order to maintain an unchanged installation height of the arrangement, the thickness of the mortar layer between the underside of the slide plate 1 and the bottom of the trough-like steel frame 2 is reduced to a minimum. This also promotes the stability of the pouring spout against lateral deflection, as stated at the beginning. The thickness of the mortar layer 3 is preferably approximately 4 to 7%, in particular approximately 6% of the total height of the slide plate 1 together with the mortar layer 3, steel frame 2 and pressure plate 8. The pressure plate 8 has a thickness which is approximately 20 to 28%, in particular approximately 23 up to 25% the total height of the slide plate including mortar layer, steel frame and pressure plate.

Die minimale Dicke der Mörtelschicht 3 ist durch die maximale Größe der körnigen Zuschlagstoffe des Mörtels oder einer entsprechenden keramischen Gießmasse definiert.The minimum thickness of the mortar layer 3 is defined by the maximum size of the granular aggregates of the mortar or a corresponding ceramic casting compound.

Wie dargelegt, ist die Dicke der Mörtelschicht 3 unterseitig auf ein Maß reduziert derart, daß die Höhe von Schieberplatte 1, Stahlrahmen 2, Mörtelschicht 3 und Druckplatte 8 derjenigen einer herkömmlichen Konstruktion bestehend aus Schieberplatte, Stahlrahmen und Mörtelschicht gemäß Figur 1 entspricht. Auf diese Weise ist es nicht erforderlich, ein neues Schiebergehäuse bereitzustellen, um den erfindungsgemäßen Schieberverschluß einzusetzen. Die dadurch bedingte Reduzierung der Dicke der Mörtelschicht 3 hat darüberhinaus den Vorteil, daß keine Masse zur Verdrängung für eine seitliche Auslenkung des Ausgußstutzens 6 zur Verfügung steht. Dementsprechend trägt die auf ein Minimum reduzierte Dicke der Mörtelschicht 3 zusätzlich zur Erhöhung der Seitenstabilität des Ausgußstutzens 6 bei.As explained, the thickness of the mortar layer 3 is reduced on the underside to such an extent that the height of the slide plate 1, steel frame 2, mortar layer 3 and pressure plate 8 corresponds to that of a conventional construction consisting of slide plate, steel frame and mortar layer according to FIG. In this way, it is not necessary to provide a new slide housing in order to use the slide closure according to the invention. The resulting reduction in the thickness of the mortar layer 3 also has the advantage that no mass is available for displacement for a lateral deflection of the pouring spout 6. Accordingly, the reduced thickness of the mortar layer 3 also contributes to increasing the lateral stability of the pouring spout 6.

Die Druckplatte 8 weist für den Durchgang des Ausgußstutzens 6 eine zentrale Öffnung auf, deren Durchmesser etwas größer ist als der Außendurchmesser des Ausgußstutzens 6, und zwar um etwa 1 bis 3 %. Damit wird eine durch Wärmedehnungen bedingte Zwängung zwischen Druckplatte 8 und dem äußeren Umfang des Ausgußstutzens 6 vermieden.The pressure plate 8 has a central opening for the passage of the pouring spout 6, the diameter of which is somewhat larger than the outside diameter of the pouring spout 6, namely by about 1 to 3%. This avoids a constraint caused by thermal expansion between the pressure plate 8 and the outer circumference of the pouring spout 6.

Die Druckplatte 8 ist vorzugsweise an der Außenseite des Bodens des wannenartigen Stahlmantels 2 punktuell angeschweißt. Grundsätzlich ist es auch denkbar, die Druckplatte 8 nur lose über den Ausgußstutzen 6 zu schieben, denn im montierten Zustand bzw. innerhalb des Schiebergehäuses wird die Druckplatte 8 durch die thermodynamischen Federelemente 4 an der Unterseite des wannenartigen Stahlmantels 2 gehalten. Sämtliche in den Anmeldungsunterlagen offenbarten Merkmale werden als erfindungswesentlich beansprucht, soweit sie einzeln oder in Kombination gegenüber dem Stand der Technik neu sind.The pressure plate 8 is preferably spot welded to the outside of the bottom of the trough-like steel jacket 2. In principle, it is also conceivable to push the pressure plate 8 only loosely over the pouring spout 6, because in the assembled state or within the slide housing, the pressure plate 8 is held by the thermodynamic spring elements 4 on the underside of the trough-like steel jacket 2. All features disclosed in the application documents are claimed as essential to the invention, insofar as they are new compared to the prior art, individually or in combination.

Bezugszeichenliste:Reference symbol list:

11
SchieberplatteSlide plate
22nd
StahlrahmenSteel frame
33rd
Feuerfest (FF)-MörtelschichtRefractory (FF) mortar layer
44th
Federelement (thermodynamische Federelemente)Spring element (thermodynamic spring elements)
55
AusbeulungBulge
66
AusgußstutzenPouring spout
77
StauchungUpsetting
88th
Druckplatteprinting plate
99
Umfangs-SchweißverbindungCircumferential weld connection
1010th
AuslauföffnungOutlet opening
1111
RohrabschnittPipe section
1212th
BruchlinieFault line
1313
StahlmantelSteel jacket

Claims (7)

Schieberverschluß zum Öffnen und Schließen des Auslaufkanals eines Gießgefäßes für metallische Schmelzen, insbesondere Stahl, mit einer Schieberplatte (1), an deren Unterseite ein Ausgußstutzen (6) angesetzt ist, der einen aus Feuerfest (FF)-Material bestehenden Rohrabschnitt (11) umfaßt, und die von einem wannenartigen Stahlrahmen (2) eingefaßt ist, wobei die Fixierung der Schieberplatte (1) innerhalb des Stahlrahmens (2) durch eine zwischen Schieberplatte und Stahlrahmen ausgebildete Schicht (3) aus Feuerfest (FF)-Mörtel oder dergleichen Keramik-Gießmasse gewährleistet ist,
dadurch gekennzeichnet, daß
der Stahlrahmen (2) boden- bzw. unterseitig durch eine Druckplatte (8) mit zentraler Ausnehmung für den Durchtritt des Rohrabschnitts (11) des Ausgußstutzens (6) verstärkt ist.
Slide closure for opening and closing the outlet channel of a casting vessel for metallic melts, in particular steel, with a slide plate (1), on the underside of which a pouring spout (6) is attached, which comprises a pipe section (11) made of refractory (FF) material, and which is surrounded by a trough-like steel frame (2), the fixing of the slide plate (1) inside the steel frame (2) being ensured by a layer (3) made of fire-resistant (FF) mortar or similar ceramic casting compound between the slide plate and the steel frame is
characterized in that
the steel frame (2) is reinforced on the bottom or underside by a pressure plate (8) with a central recess for the passage of the pipe section (11) of the pouring spout (6).
Schieberverschluß nach Anspruch 1,
dadurch gekennzeichnet, daß
die Dicke der Schicht (3) aus FF-Mörtel oder dergleichen boden- bzw. unterseitig auf ein Maß reduziert ist derart, daR die Höhe von Schieberplatte (1), Stahlrahmen (2), Mörtelschicht (3) und Druckplatte (8) derjenigen einer herkömmlichen Konstruktion bestehend aus Schieberplatte, Stahlrahmen und Mörtelschicht entspricht.
Slider closure according to claim 1,
characterized in that
the thickness of the layer (3) of FF mortar or the like on the bottom or underside is reduced to such a degree that the height of the slide plate (1), steel frame (2), mortar layer (3) and pressure plate (8) is that of one corresponds to conventional construction consisting of slide plate, steel frame and mortar layer.
Schieberverschluß nach Anspruch 1 oder 2,
dadurch gekennzeichnet, daß
die Dicke der Mörtelschicht (3) etwa 4 bis 7 %, insbesondere etwa 6 % der Gesamthöhe von Schieberplatte (1) samt Mörtelschicht (3), Stahlrahmen (2) und Druckplatte (8) beträgt.
Slider closure according to claim 1 or 2,
characterized in that
the thickness of the mortar layer (3) is approximately 4 to 7%, in particular approximately 6% of the total height of the slide plate (1) together with the mortar layer (3), steel frame (2) and pressure plate (8).
Schieberverschluß nach einem der Ansprüche 1 bis 3,
dadurch gekennzeichnet, daß
die Dicke der Druckplatte (8) etwa 20 bis 28 %, insbesondere etwa 23 bis 25 % der Gesamthöhe von Schieberplatte (1), Mörtelschicht (3), Stahlrahmen (2) und Druckplatte (8) beträgt.
Slide closure according to one of claims 1 to 3,
characterized in that
the thickness of the pressure plate (8) is approximately 20 to 28%, in particular approximately 23 to 25% of the total height of the slide plate (1), mortar layer (3), steel frame (2) and pressure plate (8).
Schieberverschluß nach einem der Ansprüche 1 bis 4,
dadurch gekennzeichnet, daß
der Rohrabschnitt (11) des Ausgußstutzens (6) von einem Stahlmantel (13) umgeben ist, der am Durchtritt des Rohrabschnitts (11) durch den Stahlrahmen (2) mit diesem schweißverbunden (Ringschweißnaht 9) ist.
Slide closure according to one of claims 1 to 4,
characterized in that
the pipe section (11) of the pouring spout (6) is surrounded by a steel jacket (13) which is welded to the pipe section (11) through the steel frame (2) with this (ring weld 9).
Schieberverschluß nach Anspruch 5,
dadurch gekennzeichnet, daß
der Stahlmantel (13) um den Rohrabschnitt (11) des Ausgußstutzens (6) sich durch den Boden des wannenartigen Stahlrahmens (2) hindurch bis an die Unterseite der Schieberplatte (1) erstreckt, insbesondere unter unmittelbarer Abstützung an dieser.
Slider closure according to claim 5,
characterized in that
the steel jacket (13) around the pipe section (11) of the pouring spout (6) extends through the bottom of the trough-like steel frame (2) to the underside of the slide plate (1), in particular with direct support thereon.
Schieberverschluß nach einem der Ansprüche 1 bis 6,
dadurch gekennzeichnet, daß
die zentrale Öffnung der Druckplatte (8) einen Innendurchmesser aufweist, der um etwa 1 bis 3 % größer ist als der Außendurchmesser des Rohrabschnitts (11) des Ausgußstutzens (6).
Slide closure according to one of claims 1 to 6,
characterized in that
the central opening of the pressure plate (8) has an inner diameter which is approximately 1 to 3% larger than the outer diameter of the tube section (11) of the pouring spout (6).
EP97100536A 1996-02-22 1997-01-15 Sliding gate closure for opening and closing the outlet of a casting vessel for molten metals Expired - Lifetime EP0791419B1 (en)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE19606686 1996-02-22
DE19606686A DE19606686A1 (en) 1996-02-22 1996-02-22 Slider closure for opening and closing the outlet channel of a casting vessel for metallic melts

Publications (2)

Publication Number Publication Date
EP0791419A1 true EP0791419A1 (en) 1997-08-27
EP0791419B1 EP0791419B1 (en) 2000-08-23

Family

ID=7786155

Family Applications (1)

Application Number Title Priority Date Filing Date
EP97100536A Expired - Lifetime EP0791419B1 (en) 1996-02-22 1997-01-15 Sliding gate closure for opening and closing the outlet of a casting vessel for molten metals

Country Status (4)

Country Link
EP (1) EP0791419B1 (en)
AT (1) ATE195679T1 (en)
DE (2) DE19606686A1 (en)
ES (1) ES2151687T3 (en)

Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE1951447A1 (en) 1969-10-13 1971-04-29 Interstop Ag Outflow slide closure for vessels for pouring metals
GB2125520A (en) * 1982-08-20 1984-03-07 Flo Con Syst Valve and replaceable collector nozzle
DE4343751A1 (en) * 1993-12-21 1995-06-22 Zimmermann & Jansen Gmbh Slide closure
EP0733423A2 (en) * 1995-03-17 1996-09-25 Deguisa, S.A. Sliding shutdown device to control the flow of molten metal from a casting recipient

Family Cites Families (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
AU502205B2 (en) * 1975-02-25 1979-07-19 Kurosaki Refractories Co. Ltd. + Nippon Steel Corp. Assembling a sliding gate
DE3334438C1 (en) * 1983-09-23 1984-07-12 Zimmermann & Jansen GmbH, 5160 Düren Manual actuation mechanism for a ladle slide closure
US4582232A (en) * 1984-06-19 1986-04-15 Flo-Con Systems, Inc. Valve, clamp, refractory and method

Patent Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE1951447A1 (en) 1969-10-13 1971-04-29 Interstop Ag Outflow slide closure for vessels for pouring metals
GB2125520A (en) * 1982-08-20 1984-03-07 Flo Con Syst Valve and replaceable collector nozzle
GB2163079A (en) * 1982-08-20 1986-02-19 Flo Con Syst Pressure plate for sliding gate valve
DE4343751A1 (en) * 1993-12-21 1995-06-22 Zimmermann & Jansen Gmbh Slide closure
EP0733423A2 (en) * 1995-03-17 1996-09-25 Deguisa, S.A. Sliding shutdown device to control the flow of molten metal from a casting recipient

Also Published As

Publication number Publication date
ES2151687T3 (en) 2001-01-01
DE59702224D1 (en) 2000-09-28
ATE195679T1 (en) 2000-09-15
DE19606686A1 (en) 1997-08-28
EP0791419B1 (en) 2000-08-23

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