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EP0630710A2 - Refractory valve plate for sliding gate valves in metallurgical vessels and process for manufacturing the valve plate - Google Patents

Refractory valve plate for sliding gate valves in metallurgical vessels and process for manufacturing the valve plate Download PDF

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Publication number
EP0630710A2
EP0630710A2 EP94104659A EP94104659A EP0630710A2 EP 0630710 A2 EP0630710 A2 EP 0630710A2 EP 94104659 A EP94104659 A EP 94104659A EP 94104659 A EP94104659 A EP 94104659A EP 0630710 A2 EP0630710 A2 EP 0630710A2
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EP
European Patent Office
Prior art keywords
frame
base body
closure
plate
closure plate
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EP94104659A
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German (de)
French (fr)
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EP0630710B1 (en
EP0630710A3 (en
Inventor
Leopold Dipl.-Ing. Schladofsky
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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
    • 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
    • B22D41/30—Manufacturing or repairing thereof

Definitions

  • the invention relates to refractory closure plates with at least one sliding surface for slide closures on metallurgical vessels such as ladles and on distribution channels that receive a molten metal, with a base body made of refractory material and an insert molded into the base body, which has a flow opening for the melt and from a high heat - and crack-resistant, peeling and erosion-resistant and chemically resistant material.
  • the invention further relates to processes for producing the closure plates.
  • two-component closure plates of the generic type for two- and three-plate closures on metallurgical vessels consist of a base body made of refractory refractory concrete and an oxide ceramic insert molded into the refractory concrete, which is designed as an insert plate which extends over the adjustment range the sealing plates come into contact with the melt.
  • These two-substance sealing plates are embedded in a sheet metal cassette or a sheet metal bandage, which due to their limited durability are only intended for use, so that the sheets can no longer be used after the refractory material has worn out.
  • the manufacture of the plates for a product manufactured in large quantities is relatively expensive.
  • DE 28 30 199 C2 describes a slide closure plate with a base body made of refractory, tar-containing Pressed material and mortar in a sheet metal cassette or a sheet metal jacket of small wall thickness.
  • the tin cassette with the refractory plate is fastened in a metal support frame of the slide lock.
  • a tar ring with a flow opening for the melt is mortared into the base body of the closure plate.
  • a slide closure plate according to DE 37 09 812 C1 consists of a flow opening for the molten metal refractory plate, which is surrounded by a shrink ring made of thin sheet metal and is clamped in the support frame of the slide closure.
  • the fatigue strength of the slide closure plates known from DE 28 30 199 C2 and DE 37 09 821 C 1 is due to the high thermal stresses that lead to cracking in the base body and damage to the sheet metal cassette or the shrink ring that surround the refractory plate due to the thermal stresses that occur and cause thermal expansion, very low.
  • the production price for these closure plates is too high in view of the limited usability.
  • Another disadvantage is the difficult disposal of e.g. can be seen in the closure plates according to DE 28 30 199 C 2 used tar-containing refractory materials.
  • the invention has for its object to further develop the generic slide closure plate with a view to cost-effective production and a high level of economy through the possibility of multiple use due to a renewal of the refractory base body.
  • the slide closure plate according to the invention is characterized by the following advantages: Pouring the base body made of cement or the like. Simple refractory material into the solid metal frame serving as casting mold around the wear part made of high-quality refractory material with the flow opening for the molten metal represents an inexpensive manufacturing process for slide closure plates. After use in a slide closure, the closure plate can be replaced by Knocking out or pushing the base body out of the metal frame and pouring a new base body into the frame can be overhauled for a new use.
  • the closure plate can be adapted to all slide systems on the market by appropriate shaping of the frame, which is preferably burned out or milled out of a steel plate. Finally, the manufacturing material for the base body of the plate can be disposed of without difficulty.
  • the closure plate 1 a which e.g. is used as a middle plate in a three-plate slide closure of a distribution channel for molten metal, has a solid, one-piece steel frame 2 with an oval shape, which is characterized by high mechanical strength and great thermal resistance.
  • recesses 3 of any shape and holes 4 are incorporated for cooling purposes and to save weight.
  • the steel frame 2 encompasses a refractory base body 5 made of cement or the like material, into which a wear part 6 designed as a ring with a flow opening 7 for the steel melt is molded.
  • the wear part 6 consists of a highly heat and crack resistant, peel and erosion resistant and chemically resistant material, e.g. an oxide ceramic material.
  • the closure plate 1 a can be clamped by means of the head wedges 8 and the side wedges 9 into the displaceable carrier frame of the slide closure, not shown.
  • the slide closure plate 1b according to FIG. 3 has a frame 2 with an outer peripheral surface 10 enlarged by a wave shape for cooling purposes.
  • the wave-shaped configuration of the opening 12 of the frame increases the inner peripheral surface 21 of the frame and improves the heat dissipation from the cast-in base body 5 onto the frame 2.
  • the frame 2 can be made in several parts, and the individual parts of the frame are welded, screwed or glued to one another.
  • the frame 2 of the closure plates 1a, 1b is preferably burned out or milled out of steel plate material with a shape adapted to the respective slide system.
  • the recesses 3 of the frame 2 are also burned out or milled, and the holes 4 are burned out or milled or drilled depending on the size.
  • the base body 5 made of cement or the like material is poured into the frame 2 serving as a casting mold, a casting template being provided on the top and bottom of the frame 2 11 is fastened with an opening 13 corresponding to the frame opening 12 by means of screws 14 which are inserted through the holes 4 in the frame 2 and secured by nuts 15, and the wearing part 6 is held on a fixing mandrel 16 of a base plate 17 on which the frame 2 is placed with the casting templates 11.
  • the closure plate 1a, 1b is then dried at temperatures in a range from 150 to 400.degree.
  • the base body 5 is cast around the insert ring 6 in a separate mold, then dried at temperatures of 150 to 400 ° C. and then mortared or screwed into the frame or frames 2.
  • the top and bottom of the base body 5, which is cast with an excess thickness and held by the frame 2 are ground flat or plane-parallel to the nominal thickness dimension 18 of the plate, so that the plates have an upper and a lower sliding surface 19, 20 received.
  • top and bottom plates of a three-plate slide fastener and the two plates of a two-plate slide fastener are produced in the same manner as described above.
  • FIGS. 5 to 8 show further exemplary embodiments 1c, 1d, 1e of closure plates.
  • closure plate 1e of the embodiment shown in FIG. 8 When using a closure plate 1e of the embodiment shown in FIG. 8 with an outer shape adapted to the shape of the displaceable support frame of a slide closure, the closure plate 1e takes over the function of the previously usual support frame, so that it can be omitted.

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

Abstract

Die Verschlußplatte 1a für den Schieberverschluß einer Verteilerrinne für Metallschmelzen besitzt einen massiven, einteiligen Stahlrahmen 2 mit einer Ovalform, der sich durch eine hohe mechanische Festigkeit und eine große thermische Widerstandsfähigkeit auszeichnet. In den Rahmen 2 sind Aussparungen 3 beliebiger Formgebung und Löcher 4 zu Kühlzwecken und zur Gewichtseinsparung eingearbeitet.The closure plate 1a for the slide closure of a distribution channel for molten metal has a solid, one-piece steel frame 2 with an oval shape, which is characterized by a high mechanical strength and a high thermal resistance. In the frame 2 recesses 3 of any shape and holes 4 are incorporated for cooling purposes and to save weight.

Der Stahlrahmen 2 faßt einen feuerfesten Grundkörper 5 aus Zement oder dgl. Material ein, in den ein z.B. als Ring ausgebildetes Verschleißteil 6 mit einer Durchflußöffnung 7 für die Stahlschmelze aus einem hochhitze- und rißbeständigen, abschäl- und erosionsfesten sowie chemisch widerstandsfähigen Material eingeformt ist.The steel frame 2 surrounds a refractory base 5 made of cement or the like material, in which a e.g. a ring-shaped wear part 6 with a flow opening 7 for the molten steel is molded from a highly heat and crack resistant, peel and erosion resistant and chemically resistant material.

Zur Herstellung von Verschlußplatten 1a wird der Grundkörper 5 aus Zement oder dgl. Material in den als Gießform dienenden Rahmen 2 eingegossen, wobei auf der Ober- und Unterseite des Rahmens 2 jeweils eine Gießschablone mit einer der Rahmenöffnung entsprechenden Öffnung befestigt wird und das Verschleißteil 6 auf einem Fixierdorn einer Bodenplatte gehalten wird, auf die der Rahmen 2 mit den Gießschablonen aufgelegt wird. Anschließend wird die Verschlußplatte 1a bei Temperaturen in einem Bereich von 150 bis 400°C getrocknet.

Figure imgaf001
To produce closure plates 1 a, the base body 5 made of cement or the like material is poured into the frame 2 serving as the casting mold, a casting template with an opening corresponding to the opening in the frame being attached to the top and bottom of the frame 2 and the wearing part 6 on a fixing mandrel of a base plate is held on which the frame 2 with the casting templates is placed. The closure plate 1a is then dried at temperatures in a range from 150 to 400 ° C.
Figure imgaf001

Description

Die Erfindung betrifft feuerfeste verschlußplatten mit mindestens einer Gleitfläche für Schieberverschlüsse an metallurgischen Gefäßen wie Gießpfannen sowie an Verteilerrinnen, die eine Metallschmelze aufnehmen, mit einem Grundkörper aus feuerfestem Material und einem in den Grundkörper eingeformten Einsatz, der eine Durchflußöffnung für die Schmelze aufweist und aus einem hochhitze- und rißbeständigen, abschäl- und erosionsfesten sowie chemisch widerstandsfähigen Material besteht.The invention relates to refractory closure plates with at least one sliding surface for slide closures on metallurgical vessels such as ladles and on distribution channels that receive a molten metal, with a base body made of refractory material and an insert molded into the base body, which has a flow opening for the melt and from a high heat - and crack-resistant, peeling and erosion-resistant and chemically resistant material.

Gegenstand der Erfindung sind ferner verfahren zur Herstellung der Verschlußplatten.The invention further relates to processes for producing the closure plates.

Aus der DE 27 19 105 B2 bekannte, sogenannte Zweistoff-Verschlußplatten der gattungsgemäßen Art für Zwei- und Dreiplattenverschlüsse an metallurgischen Gefäßen bestehen aus einem Grundkörper aus feuerfestem Feuerbeton und einem in den Feuerbeton eingeformten oxidkeramischen Einsatz, der als Einsatzplatte ausgebildet ist, die über den Verstellbereich der Verschlußplatten mit der Schmelze in Berührung kommt. Diese Zweistoff-Verschlußplatten werden in eine Blechkassette oder eine Blechbandage eingebettet, die aufgrund ihrer begrenzten Haltbarkeit nur für einen Einsatz bestimmt sind, so daß die Platten nach dem Verschleiß des Feuerfestmaterials nicht mehr einsetzbar sind. Ferner ist die Herstellung der Platten für ein in großen Stückzahlen hergestelltes Erzeugnis verhältnismäßig teuer.Known from DE 27 19 105 B2, so-called two-component closure plates of the generic type for two- and three-plate closures on metallurgical vessels consist of a base body made of refractory refractory concrete and an oxide ceramic insert molded into the refractory concrete, which is designed as an insert plate which extends over the adjustment range the sealing plates come into contact with the melt. These two-substance sealing plates are embedded in a sheet metal cassette or a sheet metal bandage, which due to their limited durability are only intended for use, so that the sheets can no longer be used after the refractory material has worn out. Furthermore, the manufacture of the plates for a product manufactured in large quantities is relatively expensive.

Die DE 28 30 199 C2 beschreibt eine Schieberverschlußplatte mit einem Grundkörper, der aus feuerfestem, teerhaltigem Material gepreßt und in einer Blechkassette bzw. einem Blechmantel von geringer Wandstärke eingemörtelt wird. Die Blechkassette mit der Feuerfestplatte wird in einem Metall-Trägerrahmen des Schieberverschlusses befestigt. In den Grundkörper der Verschlußplatte ist ein Teerring mit einer Durchflußöffnung für die Schmelze eingemörtelt.DE 28 30 199 C2 describes a slide closure plate with a base body made of refractory, tar-containing Pressed material and mortar in a sheet metal cassette or a sheet metal jacket of small wall thickness. The tin cassette with the refractory plate is fastened in a metal support frame of the slide lock. A tar ring with a flow opening for the melt is mortared into the base body of the closure plate.

Eine Schieberverschlußplatte nach der DE 37 09 812 C1 besteht aus einer eine Durchflußöffnung für die Metallschmelze aufweisenden Feuerfestplatte, die von einem Schrumpfring aus dünnem Blechmaterial eingefaßt ist und in den Trägerrahmen des Schieberverschlusses eingespannt wird.A slide closure plate according to DE 37 09 812 C1 consists of a flow opening for the molten metal refractory plate, which is surrounded by a shrink ring made of thin sheet metal and is clamped in the support frame of the slide closure.

Die Dauerstandfestigkeit der aus der DE 28 30 199 C2 sowie der DE 37 09 821 C 1 bekannten Schieberverschlußplatten ist aufgrund der hohen thermischen Belastungen, die zu Rißbildungen im Grundkörper und Beschädigung der Blechkassette bzw. des Schrumpfringes, die die Feuerfestplatte einfassen, durch die auftretenden Wärmespannungen und Wärmedehnungen führen, sehr gering. Die Praxis hat gezeigt, daß diese bekannten Verschlußplatten nach dem ersten Einsatz nach Austausch des Einsatzringes allenfalls noch ein zweites Mal eingesetzt werden können. Auch bei diesen verschlußplatten ist der Herstellungspreis im Hinblick auf die beschränkte Einsatzfähigkeit zu hoch. Ein weiterer Nachteil ist in der schwierigen Entsorgung der z.B. bei den Verschlußplatten nach der DE 28 30 199 C 2 verwendeten teerhaltigen feuerfesten Materialien zu sehen.The fatigue strength of the slide closure plates known from DE 28 30 199 C2 and DE 37 09 821 C 1 is due to the high thermal stresses that lead to cracking in the base body and damage to the sheet metal cassette or the shrink ring that surround the refractory plate due to the thermal stresses that occur and cause thermal expansion, very low. Practice has shown that these known closure plates can only be used a second time after the first use after replacing the insert ring. The production price for these closure plates is too high in view of the limited usability. Another disadvantage is the difficult disposal of e.g. can be seen in the closure plates according to DE 28 30 199 C 2 used tar-containing refractory materials.

Der Erfindung liegt die Aufgabe zugrunde, die gattungsgemäße Schieberverschlußplatte im Hinblick auf eine kostengünstige Herstellung und eine hohe Wirtschaftlichkeit durch die Möglichkeit eines vielfachen Einsatzes aufgrund einer Erneuerung des feuerfesten Grundkörpers weiterzuentwickeln.The invention has for its object to further develop the generic slide closure plate with a view to cost-effective production and a high level of economy through the possibility of multiple use due to a renewal of the refractory base body.

Diese Aufgabe ist erfindungsgemäß gelöst durch eine Schieberverschlußplatte mit den Merkmalen des Patentanspruches 1 sowie die Herstellungsverfahren nach den Patentansprüchen 9 sowie 12 und 13.This object is achieved according to the invention by a slide closure plate with the features of patent claim 1 and the production method according to patent claims 9, 12 and 13.

Die erfindungsgemäße Schieberverschlußplatte zeichnet sich durch folgende Vorteile aus:
   Das Eingießen des Grundkörpers aus Zement oder dgl. einfachem feuerfestem Material in den als Gießform dienenden massiven Metallrahmen um das aus hochwertigem Feuerfestmaterial vorgefertigte Verschleißteil mit der Durchflußöffnung für die Metallschmelze stellt ein kostengünstiges Herstellungsverfahren für Schieberverschlußplatten dar. Nach einem Einsatz in einem Schieberverschluß kann die Verschlußplatte durch Herausschlagen oder Herausdrücken des Grundkörpers aus dem Metallrahmen und Eingießen eines neuen Grundkörpers in den Rahmen für einen erneuten Einsatz überholt werden. Durch eine entsprechende Formgebung des Rahmens, der vorzugsweise aus einer Stahlplatte ausgebrannt oder ausgefräst wird, kann die Verschlußplatte allen auf dem Markt befindlichen Schiebersystemen angepaßt werden. Schließlich kann das Herstellungsmaterial für den Grundkörper der Platte ohne Schwierigkeiten entsorgt werden.The slide closure plate according to the invention is characterized by the following advantages:
Pouring the base body made of cement or the like. Simple refractory material into the solid metal frame serving as casting mold around the wear part made of high-quality refractory material with the flow opening for the molten metal represents an inexpensive manufacturing process for slide closure plates. After use in a slide closure, the closure plate can be replaced by Knocking out or pushing the base body out of the metal frame and pouring a new base body into the frame can be overhauled for a new use. The closure plate can be adapted to all slide systems on the market by appropriate shaping of the frame, which is preferably burned out or milled out of a steel plate. Finally, the manufacturing material for the base body of the plate can be disposed of without difficulty.

Die Erfindung ist nachstehend anhand von Zeichnungen erläutert. Es zeigt

Fig. 1
eine Draufsicht einer verschiebbaren Mittelplatte eines Dreiplatten-Schieberverschlusses einer Verteilerrinne,
Fig. 2
einen Längsschnitt der Verschlußplatte nach Fig. 1,
Fig. 3
eine Draufsicht einer weiteren Plattenausführung,
Fig. 4
eine durch den Rahmen einer Verschlußplatte gebildete Gießform für den Grundkörper der Platte im Längsschnitt, die
Fign. 5 und 6
die Draufsicht und den Längsschnitt einer dritten Plattenausführung und die
Fign. 7 und 8
Draufsichten von zwei weiteren Plattenausführungen.
The invention is explained below with reference to drawings. It shows
Fig. 1
a plan view of a displaceable middle plate of a three-plate slide closure of a distribution channel,
Fig. 2
2 shows a longitudinal section of the closure plate according to FIG. 1,
Fig. 3
a plan view of another plate design,
Fig. 4
a mold formed by the frame of a closure plate for the base body of the plate in longitudinal section, the
Fig. 5 and 6
the top view and the longitudinal section of a third plate embodiment and the
Fig. 7 and 8
Top views of two other plate designs.

Die Verschlußplatte 1 a nach Fig. 1 und 2, die z.B. als Mittelplatte bei einem Dreiplatten-Schieberverschluß einer Verteilerrinne für Metallschmelzen eingesetzt wird, besitzt einen massiven, einteiligen Stahlrahmen 2 mit einer Ovalform, der sich durch eine hohe mechanische Festigkeit und eine große thermische Widerstandsfähigkeit auszeichnet. In den Rahmen 2 sind Aussparungen 3 beliebiger Formgebung und Löcher 4 zu Kühlzwecken und zur Gewichtseinsparung eingearbeitet.The closure plate 1 a according to Figs. 1 and 2, which e.g. is used as a middle plate in a three-plate slide closure of a distribution channel for molten metal, has a solid, one-piece steel frame 2 with an oval shape, which is characterized by high mechanical strength and great thermal resistance. In the frame 2 recesses 3 of any shape and holes 4 are incorporated for cooling purposes and to save weight.

Der Stahlrahmen 2 faßt einen feuerfesten Grundkörper 5 aus Zement oder dgl. Material ein, in den ein als Ring ausgebildetes Verschleißteil 6 mit einer Durchflußöffnung 7 für die Stahlschmelze eingeformt ist. Das verschleißteil 6 besteht aus einem hochhitze- und rißbeständigen, abschäl- und erosionsfesten sowie chemisch widerstandsfähigen Material, z.B. einem oxidkeramischen Material.The steel frame 2 encompasses a refractory base body 5 made of cement or the like material, into which a wear part 6 designed as a ring with a flow opening 7 for the steel melt is molded. The wear part 6 consists of a highly heat and crack resistant, peel and erosion resistant and chemically resistant material, e.g. an oxide ceramic material.

Die Verschlußplatte 1a kann mittels der Kopfkeile 8 und der Seitenkeile 9 in den nicht dargestellten, verschiebbaren Trägerrahmen des Schieberverschlusses eingespannt werden.The closure plate 1 a can be clamped by means of the head wedges 8 and the side wedges 9 into the displaceable carrier frame of the slide closure, not shown.

Die Schieberverschlußplatte 1b nach Fig. 3 hat einen Rahmen 2 mit einer durch eine Wellenform zu Kühlzwecken vergrößerten äußeren Umfangsfläche 10.The slide closure plate 1b according to FIG. 3 has a frame 2 with an outer peripheral surface 10 enlarged by a wave shape for cooling purposes.

Durch die in Fig. 3 strichpunktiert angedeutete wellenförmige Ausbildung der Öffnung 12 des Rahmens 2 wird die innere Umfangsfläche 21 des Rahmens vergrößert und die Wärmeableitung vom eingegossenen Grundkörper 5 auf den Rahmen 2 verbessert.The wave-shaped configuration of the opening 12 of the frame 2, indicated by dash-dotted lines in FIG. 3, increases the inner peripheral surface 21 of the frame and improves the heat dissipation from the cast-in base body 5 onto the frame 2.

Abweichend von den vorbeschriebenen Verschlußplattenausführungen 1a, 1b kann der Rahmen 2 mehrteilig ausgeführt sein, und die Einzelteile des Rahmens sind miteinander verschweißt, verschraubt oder verklebt.In a departure from the closure plate designs 1a, 1b described above, the frame 2 can be made in several parts, and the individual parts of the frame are welded, screwed or glued to one another.

Der Rahmen 2 der Verschlußplatten 1a, 1b wird bevorzugt aus Plattenmaterial aus Stahl mit einer dem jeweiligen Schiebersystem angepaßten Form ausgebrannt oder ausgefräst.The frame 2 of the closure plates 1a, 1b is preferably burned out or milled out of steel plate material with a shape adapted to the respective slide system.

Die Aussparungen 3 des Rahmens 2 werden ebenfalls ausgebrannt oder ausgefräst, und die Löcher 4 werden je nach Größe ausgebrannt bzw. ausgefräst oder gebohrt.The recesses 3 of the frame 2 are also burned out or milled, and the holes 4 are burned out or milled or drilled depending on the size.

Nach einem ersten bevorzugten, anhand von Fig. 4 erläuterten Herstellungsverfahren für die Verschlußplatten 1a, 1b wird der Grundkörper 5 aus Zement oder dgl. Material in den als Gießform dienenden Rahmen 2 eingegossen, wobei auf der Ober- und Unterseite des Rahmens 2 jeweils eine Gießschablone 11 mit einer der Rahmenöffnung 12 entsprechenden Öffnung 13 mittels Schrauben 14 befestigt wird, die durch die Löcher 4 im Rahmen 2 gesteckt und durch Muttern 15 gesichert werden, und das Verschleißteil 6 auf einem Fixierdorn 16 einer Bodenplatte 17 gehalten wird, auf die der Rahmen 2 mit den Gießschablonen 11 aufgelegt wird. Anschließend wird die Verschlußplatte 1a, 1b bei Temperaturen in einem Bereich von 150 bis 400°C getrocknet.According to a first preferred manufacturing method for the closure plates 1a, 1b explained with reference to FIG. 4, the base body 5 made of cement or the like material is poured into the frame 2 serving as a casting mold, a casting template being provided on the top and bottom of the frame 2 11 is fastened with an opening 13 corresponding to the frame opening 12 by means of screws 14 which are inserted through the holes 4 in the frame 2 and secured by nuts 15, and the wearing part 6 is held on a fixing mandrel 16 of a base plate 17 on which the frame 2 is placed with the casting templates 11. The closure plate 1a, 1b is then dried at temperatures in a range from 150 to 400.degree.

Bei einem zweiten Verfahren zur Herstellung der Verschlußplatten 1a, 1b wird der Grundkörper 5 in einer gesonderten Form um den Einsatzring 6 gegossen, danach bei Temperaturen von 150 bis 400°C getrocknet und anschließend in den bzw. dem Rahmen 2 eingemörtelt bzw. verschraubt.In a second method for producing the closure plates 1a, 1b, the base body 5 is cast around the insert ring 6 in a separate mold, then dried at temperatures of 150 to 400 ° C. and then mortared or screwed into the frame or frames 2.

Nach dem Lufttrocknen der Verschlußplatten 1a, 1b werden Ober- und Unterseite der mit einem Dickenübermaß gegossenen, von dem Rahmen 2 gehaltenen Grundkörper 5 auf das Nenn-Dickenmaß 18 der Platte plan bzw. planparallel geschliffen, so daß die Platten eine obere und eine untere Gleitfläche 19, 20 erhalten.After the air drying of the closure plates 1a, 1b, the top and bottom of the base body 5, which is cast with an excess thickness and held by the frame 2, are ground flat or plane-parallel to the nominal thickness dimension 18 of the plate, so that the plates have an upper and a lower sliding surface 19, 20 received.

Abgenutzte und beschädigte Verschlußplatten können nach den beiden vorbeschriebenen Verfahren verhältnismäßig einfach und kostengünstig erneuert werden.Worn and damaged closure plates can be replaced relatively easily and inexpensively using the two methods described above.

Ober- und Unterplatte eines Dreiplatten-Schieberverschlusses und die beiden Platten eines Zweiplatten-Schieberverschlusses werden in der gleichen vorbeschriebenen Weise hergestellt.The top and bottom plates of a three-plate slide fastener and the two plates of a two-plate slide fastener are produced in the same manner as described above.

Die Figuren 5 bis 8 zeigen weitere Ausführungsbeispiele 1c, 1d, 1e von Verschlußplatten.FIGS. 5 to 8 show further exemplary embodiments 1c, 1d, 1e of closure plates.

Bei der Verwendung einer Verschlußplatte 1e der in Fig. 8 dargestellten Ausführungsform mit einer der Form des verschiebbaren Trägerrahmens eines Schieberverschlusses angepaßten Außenform übernimmt die Verschlußplatte 1e die Funktion des bisher üblichen Trägerrahmens, so daß dieser enfallen kann.

Figure imgb0001
When using a closure plate 1e of the embodiment shown in FIG. 8 with an outer shape adapted to the shape of the displaceable support frame of a slide closure, the closure plate 1e takes over the function of the previously usual support frame, so that it can be omitted.
Figure imgb0001

Claims (14)

Feuerfeste Verschlußplatte mit mindestens einer Gleitfläche für Schieberverschlüsse an metallurgischen Gefäßen wie Gießpfannen sowie an Verteilerrinnen, die eine Metallschmelze aufnehmen, mit einem Grundkörper aus feuerfestem Material und einem in den Grundkörper eingeformten Einsatz, der eine Durchflußöffnung für die Schmelze aufweist und aus einem hochhitze- und rißbeständigen, abschäl- und erosionsfesten sowie chemisch widerstandsfähigen Material besteht, gekennzeichnet durch einen massiven, für einen mehrfachen Einsatz bestimmten Rahmen (2) aus Stahl oder dergleichen hochfestem Material mit einer hohen mechanischen Festigkeit und einer große thermischen Widerstandsfähigkeit zur Aufnahme des nach Verschleiß austauschbaren Grundkörpers (5).Fireproof closure plate with at least one sliding surface for slide closures on metallurgical vessels such as ladles and on distribution channels that receive a metal melt, with a base body made of refractory material and an insert molded into the base body, which has a flow opening for the melt and a highly heat and crack-resistant , peeling and erosion-resistant and chemically resistant material, characterized by a solid frame (2) made of steel or similar high-strength material intended for multiple use with a high mechanical strength and a high thermal resistance to accommodate the base body which can be replaced after wear (5 ). Verschlußplatte nach Anspruch 1, gekennzeichnet durch einen einteiligen Rahmen (2).Closure plate according to claim 1, characterized by a one-piece frame (2). Verschlußplatte nach Anspruch 1, gekennzeichnet durch einen mehrteiligen Rahmen (2), dessen Einzelteile miteinander verschweißt, verschraubt oder verklebt sind.Closure plate according to claim 1, characterized by a multi-part frame (2), the individual parts of which are welded, screwed or glued together. Verschlußplatte nach einem der Ansprüche 1 bis 3, dadurch gekennzeichnet, daß der Rahmen (2) Aussparungen (3) beliebiger Formgebung und/oder Löcher (4) zu Kühlzwecken und zur Gewichtseinsparung aufweist.Closure plate according to one of claims 1 to 3, characterized in that the frame (2) has recesses (3) of any shape and / or holes (4) for cooling purposes and for saving weight. Verschlußplatte nach einem der Ansprüche 1 bis 4, gekennzeichnet durch eine durch eine entsprechende Formgebung, z.B. eine Wellenform, zu Kühlzwecken vergrößerte äußere und/oder innere Umfangsflache (10, 21) des Rahmens (2).Closure plate according to one of claims 1 to 4, characterized by a suitable shape, e.g. a wave shape, enlarged for cooling purposes outer and / or inner peripheral surface (10, 21) of the frame (2). Verschlußplatte nach einem der Ansprüche 1 bis 5, gekennzeichnet durch eine Außenform der Platte (1e), die der äußeren Form des verschiebbaren Trägerrahmens einer Schieberverschlußplatte entspricht.Locking plate according to one of claims 1 to 5, characterized by an outer shape of the plate (1e) which corresponds to the outer shape of the displaceable support frame of a slide lock plate. Verschlußplatte nach einem der Ansprüche 1 bis 6, dadurch gekennzeichnet, daß der in den Grundkörper (5) eingeformte Einsatz mit der Durchflußöffnung (7) für die Schmelze als Verschleißteil (6) mit beliebiger geometrischer Form ausgebildet ist.Closure plate according to one of claims 1 to 6, characterized in that the insert molded into the base body (5) with the flow opening (7) for the melt is designed as a wear part (6) with any geometrical shape. Verschlußplatte nach Anspruch 7, gekennzeichnet durch die Auswechselbarkeit eines in den Grundkörper (5) eingebetteten Verschleißteils (6).Closure plate according to claim 7, characterized by the interchangeability of a wear part (6) embedded in the base body (5). Verfahren zur Herstellung von Verschlußplatten für Schieberverschlüsse nach den Ansprüchen 1 bis 8, dadurch gekennzeichnet, daß der Rahmen (2) der Verschlußplatten (1a-1e) mit einer dem jeweiligen Schiebersystem angepaßten Form aus Plattenmaterial aus Stahl ausgebrannt oder ausgefräst oder gegossen wird.Process for the production of closure plates for slide closures according to claims 1 to 8, characterized in that the frame (2) of the closure plates (1a-1e) is burned out or milled or cast from a plate material made of steel with a shape which is adapted to the respective slide system. Verfahren nach Anspruch 9, dadurch gekennzeichnet, daß die Aussparungen (3) des Rahmens (2) ausgebrannt oder ausgefräst und die Löcher (4) je nach Größe ausgebrannt bzw. ausgefräst oder gebohrt werden.Method according to claim 9, characterized in that the recesses (3) of the frame (2) are burned out or milled out and the holes (4) are burned out or milled out or drilled depending on the size. Verfahren nach Anspruch 9 und 10, dadurch gekennzeichnet, daß der Grundkörper (5) aus Zement oder dgl. Material um das vorgefertigte Verschleißteil (6) gegossen wird.Method according to claims 9 and 10, characterized in that the base body (5) is cast from cement or the like material around the prefabricated wear part (6). Verfahren nach Anspruch 11, dadurch gekennzeichnet, daß der Grundkörper (5) in den als Gießform dienenden Rahmen (2) eingegossen wird, wobei auf der Ober- und der Unterseite des Rahmens (2) jeweils eine Gießschablone (11) mit einer der Rahmenöffnung (12) entsprechenden Öffnung (13) lösbar befestigt und das Verschleißteil (6) auf einem Fixierdorn (16) einer Bodenplatte (17) gehalten wird, auf die der Rahmen (2) mit den Gießschablonen (11) aufgelegt wird, und die Verschlußplatte (1a-1e) anschließend bei Temperaturen in einem Bereich von 150 bis 400°C getrocknet wird.A method according to claim 11, characterized in that the base body (5) is poured into the frame (2) serving as a casting mold, with a casting template (11) with one of the frame openings (11) on the top and bottom of the frame (2). 12) corresponding opening (13) detachably fastened and the wearing part (6) is held on a fixing mandrel (16) of a base plate (17) on which the frame (2) with the casting templates (11) is placed, and the closure plate (1a -1e) is then dried at temperatures in a range from 150 to 400 ° C. Verfahren nach Anspruch 9 bis 11, dadurch gekennzeichnet, daß der Grundkörper (5) in einer gesonderten Form um das Verschleißteil (6) gegossen, danach bei Temperaturen von 150 bis 400°C getrocknet und anschließend in den bzw. dem Rahmen (2) eingemörtelt bzw. verschraubt wird.Method according to claims 9 to 11, characterized in that the base body (5) is cast in a separate form around the wear part (6), then dried at temperatures of 150 to 400 ° C and then mortared in the frame or frames (2) or screwed. Verfahren nach Anspruch 9 bis 13, dadurch gekennzeichnet, daß Ober- und Unterseite des mit einem Dickenübermaß gegossenen, von dem Rahmen (2) gehaltenen Grundkörpers (5) nach dem Lufttrocknen der Verschlußplatte (1a-1e) auf das Nenn-Dickenmaß (18) der Platte plan bzw. planparallel geschliffen werden.Method according to Claims 9 to 13, characterized in that the upper and lower sides of the base body (5) cast with an excess thickness and held by the frame (2) after the closure plate (1a-1e) has air dried to the nominal thickness dimension (18). the plate is ground flat or plane-parallel.
EP94104659A 1993-04-03 1994-03-24 Refractory valve plate for sliding gate valves in metallurgical vessels and process for manufacturing the valve plate Expired - Lifetime EP0630710B1 (en)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE4310965 1993-04-03
DE4310965 1993-04-03

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EP0630710A2 true EP0630710A2 (en) 1994-12-28
EP0630710A3 EP0630710A3 (en) 1996-01-31
EP0630710B1 EP0630710B1 (en) 2000-09-06

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EP (1) EP0630710B1 (en)
AT (1) ATE196108T1 (en)
DE (2) DE4339316C2 (en)
DK (1) DK0630710T3 (en)
ES (1) ES2149224T3 (en)
GR (1) GR3034993T3 (en)
PT (1) PT630710E (en)

Cited By (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO2001094056A1 (en) * 2000-06-09 2001-12-13 Orient Abrasives Limited A slide gate plate system reinforced with steel fibre
CN102900892A (en) * 2012-09-28 2013-01-30 长兴国盛耐火材料有限公司 Production method for tertiary air valve plate
KR20230149611A (en) * 2022-04-20 2023-10-27 조선내화 주식회사 Valve plate for slide gate with improved structure and slide gate using them
KR20230149612A (en) * 2022-04-20 2023-10-27 조선내화 주식회사 Automatic clamping device for valve plate for slide gate using cam

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Publication number Priority date Publication date Assignee Title
DE19615696C2 (en) * 1996-03-21 1999-01-07 Zimmermann & Jansen Gmbh Ladle slide arrangement
DE19917851C2 (en) * 1999-04-21 2003-04-10 Didier Werke Ag Rotary valve plate
DE10301049A1 (en) * 2003-01-13 2004-07-22 Pa-Ha-Ge Feuerfeste Erzeugnisse Gmbh & Co. Kg Refractory closure plate for slide closures on metallurgical vessels and process for their manufacture

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DE2620423B2 (en) * 1976-05-08 1978-06-22 Stopinc Ag, Zug (Schweiz) Slide plate unit for slide gate locks
DE2719105B2 (en) * 1977-04-29 1979-10-31 Didier-Werke Ag, 6200 Wiesbaden Fireproof plate for slide valve closures on metallurgical vessels
FR2419785A1 (en) * 1978-03-13 1979-10-12 Kaiser Electro Refractaire PROCESS FOR THE MANUFACTURE OF SLIDING SHUTTERS FOR CASTING BUSHES AND SIMILAR OBJECTS
DE2830199C2 (en) * 1978-07-10 1979-11-08 Martin & Pagenstecher Gmbh, 5000 Koeln Refractory plate for a slide closure on vessels containing molten metal
DE8013402U1 (en) * 1980-05-17 1980-08-21 Martin & Pagenstecher Gmbh, 5000 Koeln SLIDE PLATE FOR SLIDE LOCKS
DE3337105A1 (en) * 1983-10-12 1985-05-15 Gonschorek, Axel Friedrich, 6670 St Ingbert Process for the production or repair of a plate-shaped slider element of refractory material for the sliding closure of a casting ladle
DE3538499C1 (en) * 1985-10-30 1987-05-07 Didier Werke Ag Fireproof wear plate for slide closures on metallurgical vessels
DE3614730A1 (en) * 1986-04-30 1987-11-05 Didier Werke Ag FIRE-RESISTANT MOLDED BODY, IN PARTICULAR PLATE FOR SLIDING LATCHES
DE3709812C1 (en) * 1987-03-25 1988-01-21 Stopinc Ag Fireproof plate for sliding closures on the pouring of metallurgical vessels

Cited By (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO2001094056A1 (en) * 2000-06-09 2001-12-13 Orient Abrasives Limited A slide gate plate system reinforced with steel fibre
CN102900892A (en) * 2012-09-28 2013-01-30 长兴国盛耐火材料有限公司 Production method for tertiary air valve plate
KR20230149611A (en) * 2022-04-20 2023-10-27 조선내화 주식회사 Valve plate for slide gate with improved structure and slide gate using them
KR20230149612A (en) * 2022-04-20 2023-10-27 조선내화 주식회사 Automatic clamping device for valve plate for slide gate using cam
KR102608857B1 (en) 2022-04-20 2023-12-04 조선내화 주식회사 Valve plate for slide gate with improved structure and slide gate using them
KR102622383B1 (en) 2022-04-20 2024-01-10 조선내화 주식회사 Automatic clamping device for valve plate for slide gate using cam

Also Published As

Publication number Publication date
EP0630710B1 (en) 2000-09-06
PT630710E (en) 2000-12-29
DK0630710T3 (en) 2001-03-19
DE4339316A1 (en) 1994-10-06
DE4339316C2 (en) 1996-11-14
ES2149224T3 (en) 2000-11-01
EP0630710A3 (en) 1996-01-31
ATE196108T1 (en) 2000-09-15
GR3034993T3 (en) 2001-03-30
DE59409511D1 (en) 2000-10-12

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