EP0122904A2 - Slide gate nozzle device for a vessel for the iron and steel or metallurgical industry - Google Patents

Slide gate nozzle device for a vessel for the iron and steel or metallurgical industry Download PDF

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Publication number
EP0122904A2
EP0122904A2 EP84870037A EP84870037A EP0122904A2 EP 0122904 A2 EP0122904 A2 EP 0122904A2 EP 84870037 A EP84870037 A EP 84870037A EP 84870037 A EP84870037 A EP 84870037A EP 0122904 A2 EP0122904 A2 EP 0122904A2
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EP
European Patent Office
Prior art keywords
upper plate
plate
sliding
container
movable
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Withdrawn
Application number
EP84870037A
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German (de)
French (fr)
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EP0122904A3 (en
Inventor
François-Noel Richard
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Vesuvius International Corp
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Vesuvius International Corp
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Filing date
Publication date
Application filed by Vesuvius International Corp filed Critical Vesuvius International Corp
Publication of EP0122904A2 publication Critical patent/EP0122904A2/en
Publication of EP0122904A3 publication Critical patent/EP0122904A3/en
Withdrawn legal-status Critical Current

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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

Definitions

  • the invention relates to a sliding closure device for a steel or metallurgical container consisting of a support frame comprising a fixed upper plate, itself formed of at least one refractory element provided with at least one pouring orifice and possibly maintained in a metal frame, and at least one sliding plate, optionally removably mounted in a slide, so as to slide relative to the fixed upper plate against which it is applied.
  • the sliding closure device according to the invention can in particular be mounted on a continuous casting distributor for the manufacture of blooms and small slabs.
  • the present invention relates to a method and a device making it possible to avoid the abovementioned drawbacks. It proposes to make the closure device independent of the container, to allow the replacement of the refractories independently on each line, while retaining a good seal in the runner.
  • a sliding closure device for a steel or metallurgical container consisting of a support frame comprising a fixed upper plate, itself formed of at least one element. refractory provided with at least one pouring orifice and possibly maintained in a metal frame, at least one sliding plate optionally removably mounted in a slide, so as to slide relative to the fixed upper plate against which it is applied.
  • This device is essentially characterized in that it makes it possible to separate at least one element from the upper plate, removably mounted on said device before it is placed under the container, so that the plate element which is separates from the device remains integral with the container when, during an interruption of the casting operation, the device is moved away from said container.
  • each above-mentioned upper plate element only represents part of the sliding surface with respect to each movable plate
  • the sliding face of each element of the upper plate with respect to the sliding plate is held against reference supports formed in the walls of the support frame by means acting on the back of each plate element.
  • the upper plate advantageously has at its upper part a boss constituting an internal nozzle intended to penetrate into the seat brick.
  • the aforementioned boss of the upper plate is preferably porous to gases and is provided with a gas supply arranged in the upper plate for injecting gas, in particular inert, into the pouring channel through the porous boss of the upper plate.
  • the device comprises two sliding plates brought alternately under the pouring orifice of the upper plate by translation in the opposite direction.
  • the device according to the invention comprises a cam which extends symmetrically with respect to an end plane passing through the casting axis, on which acts at least one spring disposed symmetrically with respect to the above-mentioned plane and along from which slides at least two levers mounted on a carriage and intended to apply each of the aforementioned plates against the sliding plane of the upper plate, so that the pressure increases when any of the plates approaches the pouring orifice and decreases when it deviates from it, allowing easy removal of the aforementioned plate in the rest position.
  • the device advantageously comprises, in the pouring axis and under the lower movable plates, a lower plate possibly attached to a jet protection tube which possibly dips in the mold and held in place in a fixed lateral position against the underside of the other movable plate using a movable support fork in a vertical plane.
  • the sliding closure device designated as a whole by the reference notation 1, consists of a main frame 2 comprising an upper fixed plate 3 mounted in a fixed assembly 4, a carriage or slide 5 on which is removably mounted at least one movable plate 6,7 of refractory material.
  • the upper fixed plate 3 is optionally formed of several independent elements 8, 9 and 10, one of which is provided with a boss acting as an internal nozzle 11 and forms an internal nozzle-upper plate element 12 assembly provided in a single sheet 13.
  • This assembly 13 is deposited on the support frame 2 and is held in place using a retractable blocking device 14 which can be removed even when the closure device is put in place under a container 15.
  • This implementation is carried out simply by approaching the sliding closure device 1 of the container 15 so as to introduce the internal nozzle 11 into a seat brick 16, mounted by the interior side of the container 15 during the preparation of the refractory lining 17
  • the positioning of the seat brick 16 is ensured by a metal centering ring 18 fixed to the bottom of the container.
  • the closing device can be handled using an individual motorized or manual forklift.
  • the sliding closure is fixed using, for example, four eyelet bolts 19 tightened on lugs 20 welded to the container 15.
  • the sliding surface 21 of the above-mentioned upper plate 3 must preferably be large in order to ensure in said sliding closing device, a sufficient bearing stroke for the movable plates 6,7.
  • the machined working face 21 or the sliding face of the plates 8, 9 and 10 are used as positioning reference and not, as is generally the case, their back.
  • the method of attachment described makes it possible to mount the closure device 1 on a container 15 just before casting and to remove it just after.
  • a clamping device 24 applies the carriage or slide 5 provided with the movable plate (s) 6 (7) against the upper fixed plate 3, so as to obtain a sealed contact in the casting zone.
  • each movable plate 6, 7 is carried by an independent fork 25 articulated in all directions to allow perfect application of said movable plate 6,7 against the sliding plane of the upper fixed plate 3, which transmits the pressure force against the upper fixed plate 3 by means of a lever 26.
  • the above-mentioned pressure force is transmitted to the lever 26 by the clamping device 24 illustrated in FIGS. 2 and 4, consisting of a substantially horizontal tilting bar 27, held laterally by two axes 27 ′ introduced into elongated orifices 28 and by a housing 28 'so as to be able to oscillate and slide in a substantially vertical plane with a play of a few millimeters and repelled by at least one spring 29 acting in the vicinity of its midpoint.
  • the force exerted by the tilting bar 27 on one or more rocker (s) 30 moving simultaneously along said tilting bar 27 will increase as a pad 30 'of the rocker arm 30 will approach the point or area of application of the spring (s) 29.
  • a low residual pressure makes it easy to extract and replace a used plate 6 in the waiting area.
  • the device allows the mobile plate 6,7 intended for a particular use to be put in place, such as a calibrated orifice for starting a line of the continuous casting installation or even a closing plate 7.
  • the linear movement of the carriage 5 is ensured by a device of the threaded rod-nut type.
  • the threaded rod 32 is rotated by an electric motor 33 on which is mounted a speed reducer 34. It is advantageous to provide two speeds, the slow speed allowing precise rolling of the jet of liquid metal, the other allowing a change quick of the above plate.
  • the drive nut 35 is advantageously carried by a U-shaped piece intended to move the carriage 5 by acting on one side or the other, so that the reserve plate 7 pushes the plate in service 6
  • This design makes it possible to avoid any infiltration of liquid metal, in particular when the line of separation of the plates passes in front of the pouring orifice 31.
  • the threaded rod 32 is advantageously surrounded by an expandable device of conical shape forming a protective sheath 32 'around the threaded rod 32.
  • the closing device 1 comprises, under the movable plate 6 in the working position, in the extension of the axis of the pouring channel 30, a pouring tube 36 secured to a lower plate 37 held in place by a support fork. 38, pivoting in a vertical plane, around the point of application of a lever 38 '.
  • This support fork 38 is held in the high position by a set of four springs 39, fixed by the bolts 40, thus making it possible to strongly apply the lower plate 37 against the lower face of the movable plate 6.
  • the action of the above-mentioned springs 39 is counterbalanced by jacks 41.
  • a movable closing plate 7 is brought by sliding along the upper 3 and lower 37 fixed plates, opposite the pouring orifice 30.
  • the support fork 38 supporting the pouring tube 36 is lowered by means of pneumatic cylinders 41 acting against the springs 39.
  • the pouring tube can then be removed manually using the fork 42 and replaced by a new tube.
  • the aforementioned fork 42 is advantageously articulated so that it is easy to remove the lower plate and the pouring tube without raising the container 15 or the distributor. This ensures independence for the various casting lines total lines between them.
  • each jack 41 is for example constituted by a metal bellows closed at its ends by the metal flanges 43.
  • One of the metal flanges is provided with a supply of gas 44 under pressure making it possible to actuate the pneumatically cylinder.
  • the internal nozzle 11 is made of a porous material for gases and is provided with a gas supply formed in the upper plate 3 for injecting gas, in particular inert, into the pouring channel 31 through the porous boss 11 of the upper plate 3 .
  • the sliding closure device allows the implementation of a one-piece assembly comprising a bottom plate and a pouring tube incorporated therein. It allows the replacement of such a possibly defective assembly by a new assembly without the need to interrupt the casting or to raise the distributor.
  • the monobloc assembly described above has the advantage of having no seal.
  • the device according to the invention therefore makes it possible to obtain effective protection of the pouring joint, since it only involves connections made up of two plates applied one against the other. These flat connections generally have an excellent seal and are capable of being easily inertized.

Abstract

A slide gate nozzle (1) of a metallurgical vessel (15) is made independent by providing means for detaching at least one element (9) from an upper plate (3) mounted in a removable manner on the gate nozzle (1) before positioning the latter under the vessel (15). The conditions of use of the said gate nozzle (1) are thus improved. <IMAGE>

Description

L'invention concerne un dispositif de fermeture coulissant pour conteneur sidérurgique ou métallurgique constitué d'un cadre support comprenant une plaque supérieure fixe, elle-même formée d'au moins un élément réfractaire pourvu d'un orifice de coulée au moins et éventuellement maintenu dans un cadre métallique, et au moins une plaque coulissante, éventuellement montée de manière amovible dans un coulisseau, de façon à glisser par rapport à la plaque supérieure fixe contre laquelle elle est appliquée.The invention relates to a sliding closure device for a steel or metallurgical container consisting of a support frame comprising a fixed upper plate, itself formed of at least one refractory element provided with at least one pouring orifice and possibly maintained in a metal frame, and at least one sliding plate, optionally removably mounted in a slide, so as to slide relative to the fixed upper plate against which it is applied.

Le dispositif de fermeture coulissante suivant l'invention peut notamment être monté sur un répartiteur de coulée continue pour la fabrication de blooms et petits brames.The sliding closure device according to the invention can in particular be mounted on a continuous casting distributor for the manufacture of blooms and small slabs.

Dans les aciéries à coulée continue, il est courant d'utiliser des conteneurs et/ou des répartiteurs dont la fonction essentielle est d'assurer une parfaite séparation du métal et du laitier et de répartir l'acier, dans le cas d'une installation de coulée à plusieurs lignes, entre les différentes lingotières. Le réglage des débits de coulée est effectué généralement par action sur une quenouille ou à l'aide de dispositifs de fermeture coulissante, éventuellement contrôlés automatiquement.In continuous-casting steelworks, it is common to use containers and / or distributors whose essential function is to ensure a perfect separation of the metal and the slag and to distribute the steel, in the case of an installation multi-line casting between the different molds. The setting of the pouring rates is generally carried out by action on a stopper rod or using sliding closing devices, possibly automatically controlled.

La plupart des dispositifs de fermeture coulissante connus à ce jour, ne permettent cependant pas d'effectuer de longues séquences de coulée, en raison de la nécessité de remplacer après un temps relativement court l'un ou l'autre réfractaire sensible.Most of the sliding closure devices known to date, however, do not allow long casting sequences to be carried out, due to the need to replace one or the other sensitive refractory after a relatively short time.

Dans certains dispositifs existants, il est prévu un emboitement entre le tube plongeur et la plaque inférieure de la fermeture coulissante de manière à permettre l'échange du tube plongeur. Un tel procédé présente l'inconvénient de nuire à l'étanchéité du chenal de coulée et en conséquence à la qualité du métal.In some existing devices, there is a socket between the dip tube and the bottom plate of the sliding closure so as to allow the exchange of the dip tube. Such a method has the drawback of adversely affecting the tightness of the pouring channel and consequently the quality of the metal.

Dans d'autres systèmes connus, il est prévu de changer conjointement le tube plongeur et la plaque inférieure pour remédier à l'inconvénient susdit mais il est alors nécessaire de relever le répartiteur lors du changement ce qui oblige à interrompre momentanément la coulée sur toutes les lignes.In other known systems, it is planned to jointly change the dip tube and the bottom plate to remedy the above-mentioned drawback, but it is then necessary to raise the distributor during the change, which means that the pouring must be temporarily interrupted on all lines.

Un autre inconvénient des fermetures existantes, réside dans le fait que le chenal de coulée reste partiellement empli de métal après l'arrêt de la coulée. Des moyens coûteux doivent alors être mis en oeuvre pour nettoyer le chenal de coulée, séparer la fermeture coulissante du conteneur et/ou renouveler la garniture réfractaire de celle-ci.Another disadvantage of existing closures is that the runner remains partially filled with metal after the stop of the pouring. Expensive means must then be used to clean the pouring channel, separate the sliding closure from the container and / or renew the refractory lining thereof.

Dans certains dispositifs existants, il est prévu un emboîtement entre le tube plongeur et la plaque inférieure de la fermeture coulissante de manière à permettre l'échange du tube plongeur. Un tel procédé présente l'inconvénient de nuire à l'étanchéité du chenal de coulée et en conséquence à la qualité du métal.In some existing devices, there is an interlocking between the dip tube and the lower plate of the sliding closure so as to allow the exchange of the dip tube. Such a method has the drawback of adversely affecting the tightness of the pouring channel and consequently the quality of the metal.

Dans d'autres systèmes connus, il est prévu de changer conjointement le tube plongeur et la plaque inférieure pour remédier à l'inconvénient susdit mais il est alors nécessaire de relever le répartiteur lors du changement ce qui oblige à interrompre momentanément la coulée sur toutes les lignes.In other known systems, it is planned to jointly change the dip tube and the bottom plate to remedy the above-mentioned drawback, but it is then necessary to raise the distributor during the change, which means that the pouring must be temporarily interrupted on all lines.

Un autre inconvénient des fermetures existantes, réside dans le fait que le chenal de coulée reste partiellement empli de métal après l'arrêt de la coulée.. Des moyens coûteux doivent alors être mis en oeuvre pour nettoyer le chenal de coulée, séparer la fermeture coulissante du conteneur et/ou renouveler sa garniture réfractaire.Another drawback of existing closures is that the runner remains partially filled with metal after stopping the pouring. Expensive means must then be used to clean the runner, separate the sliding closure of the container and / or renew its refractory lining.

La présente invention est relative à un procédé et à un dispositif permettant d'éviter les inconvénients précités. Elle se propose de rendre le dispositif de fermeture indépendant du conteneur, de permettre le remplacement des réfractaires indépendamment sur chaque ligne,tout en conservant une bonne étanchéité du chenal de coulée.The present invention relates to a method and a device making it possible to avoid the abovementioned drawbacks. It proposes to make the closure device independent of the container, to allow the replacement of the refractories independently on each line, while retaining a good seal in the runner.

Elle concerne un dispositif de fermeture coulissant d'un conteneur sidérurgique ou métallurgique, constitué d'un cadre support comportant une plaque supérieure fixe, elle-même formée d'au moins un élément réfractaire pourvu d'un orifice de coulée au moins et éventuellement maintenu dans un cadre métallique, au moins une plaque coulissante éventuellement montée de manière amovible dans un coulisseau, de façon à glisser par rapport à la plaque supérieure fixe contre laquelle elle est appliquée. Ce dispositif est essentiellement caractérisé en ce qu'il permet de désolidariser au moins un élément de la plaque supérieure, monté de manière amovible sur ledit dispositif avant sa mise en place sous le conteneur, de façon que l'élément de plaque que l'on sépare du dispositif reste solidaire du conteneur lorsque, lors d'une interruption de l'opération de coulée, on éloigne le dispositif dudit conteneur.It relates to a sliding closure device for a steel or metallurgical container, consisting of a support frame comprising a fixed upper plate, itself formed of at least one element. refractory provided with at least one pouring orifice and possibly maintained in a metal frame, at least one sliding plate optionally removably mounted in a slide, so as to slide relative to the fixed upper plate against which it is applied. This device is essentially characterized in that it makes it possible to separate at least one element from the upper plate, removably mounted on said device before it is placed under the container, so that the plate element which is separates from the device remains integral with the container when, during an interruption of the casting operation, the device is moved away from said container.

Suivant une particularité de l'invention, chaque élément de plaque supérieur susdit ne représente qu'une partie de la surface de glissement par rapport à chaque plaque mobile,According to a feature of the invention, each above-mentioned upper plate element only represents part of the sliding surface with respect to each movable plate,

Dans une forme de réalisation spécifique de l'invention, la face de glissement de chaque élément de la plaque supérieure par rapport à la plaque coulissante est maintenue contre des appuis de référence ménagés dans les parois du cadre support par des moyens agissant au dos de chaque élément de plaque.In a specific embodiment of the invention, the sliding face of each element of the upper plate with respect to the sliding plate is held against reference supports formed in the walls of the support frame by means acting on the back of each plate element.

La plaque supérieur présente avantageusement à sa partie supérieure un bossage constituant une busette interne destinée à pénétrer dans la brique de siège.The upper plate advantageously has at its upper part a boss constituting an internal nozzle intended to penetrate into the seat brick.

Le bossage susdit de la plaque supérieure est de préférence poreux aux gaz et est muni d'une adduction de gaz ménagée dans la plaque supérieure pour injecter du gaz, notamment inerte, dans le chenal de coulée au travers du bossage poreux de la plaque supérieure.The aforementioned boss of the upper plate is preferably porous to gases and is provided with a gas supply arranged in the upper plate for injecting gas, in particular inert, into the pouring channel through the porous boss of the upper plate.

Dans une forme de réalisation préférée de l'invention, le dispositif comporte deux plaques coulissantes amenées en alternance sous l'orifice de coulée de la plaque supérieure par translation dans le sens opposé.In a preferred embodiment of the invention, the device comprises two sliding plates brought alternately under the pouring orifice of the upper plate by translation in the opposite direction.

Dans ce but, le dispositif suivant l'invention comporte une came qui s'étend symétriquement par rapport à un plan de bout passant par l'axe de coulée, sur laquelle agit au moins un ressort disposé symétriquement par rapport au plan susdit et le long de laquelle glisse au moins deux leviers montés sur un chariot et destinées à appliquer chacune des plaques susdites contre le plan de glissement de la plaque supérieure, de manière que la pression augmente lorsqu'une quelconque des plaques se rapproche de l'orifice de coulée et décroisse lorsqu'elle s'en écarte, permettant un retrait aisé de la plaque susdite en position de repos.For this purpose, the device according to the invention comprises a cam which extends symmetrically with respect to an end plane passing through the casting axis, on which acts at least one spring disposed symmetrically with respect to the above-mentioned plane and along from which slides at least two levers mounted on a carriage and intended to apply each of the aforementioned plates against the sliding plane of the upper plate, so that the pressure increases when any of the plates approaches the pouring orifice and decreases when it deviates from it, allowing easy removal of the aforementioned plate in the rest position.

Le dispositif comporte avantageusement, dans l'axe de coulée et sous les plaques mobiles inférieures, une plaque inférieure éventuellement solidaire d'un tube de protection du jet qui plonge éventuellement dans la lingotière et maintenue en place dans une position latérale fixe contre la face inférieure de l'autre plaque mobile à l'aide d'une fourche support mobile dans un plan vertical.The device advantageously comprises, in the pouring axis and under the lower movable plates, a lower plate possibly attached to a jet protection tube which possibly dips in the mold and held in place in a fixed lateral position against the underside of the other movable plate using a movable support fork in a vertical plane.

D'autres particularités et détails de l'invention ressortiront de la description suivante des dessins annexés au présent mémoire, qui représentent une forme de réalisation du dispositif de contrôle suivant l'invention donné exclusivement à titre d'exemple.Other particularities and details of the invention will emerge from the following description of the drawings annexed to this specification, which represent an embodiment of the control device according to the invention given exclusively by way of example.

Dans ces dessins :

  • - la figure 1 est une coupe longitudinale d'un dispositif de fermeture coulissante monté sur un conteneur suivant l'axe de l'orifice de coulée ;
  • - la figure 2 est une coupe transversale du dispositif de fermeture montré à la figure 1 ;
  • - la figure 3 est une vue en plan du dispositif montré aux figures 1 et 2;
  • - la figure 4 est une coupe verticale du dispositif illustré aux figures 1 à 3, suivant l'axe longitudinal du basculeur.
In these drawings:
  • - Figure 1 is a longitudinal section of a sliding closure device mounted on a container along the axis of the pouring orifice;
  • - Figure 2 is a cross section of the closure device shown in Figure 1;
  • - Figure 3 is a plan view of the device shown in Figures 1 and 2;
  • - Figure 4 is a vertical section of the device illustrated in Figures 1 to 3, along the longitudinal axis of the rocker.

Les mêmes notations de référence désignent des éléments identiques ou analogues.The same reference notations designate identical or analogous elements.

Comme illustré aux figures 1 à 3, le dispositif de fermeture coulissante suivant l'invention désigné dans son ensemble par la notation de référence 1, est constitué d'un châssis principal 2 comportant une plaque fixe supérieure 3 montée dans un ensemble fixe 4, un chariot ou coulisseau 5 sur lequel est montée de manière amovible au moins une plaque mobile 6,7 en matière réfractaire.As illustrated in Figures 1 to 3, the sliding closure device according to the invention designated as a whole by the reference notation 1, consists of a main frame 2 comprising an upper fixed plate 3 mounted in a fixed assembly 4, a carriage or slide 5 on which is removably mounted at least one movable plate 6,7 of refractory material.

La plaque fixe supérieure 3 est formée éventuellement de plusieurs éléments indépendants 8,9 et 10 dont l'un est muni d'un bossage jouant le rôle d'une busette interne 11 et forme un ensemble busette interne-élément de plaque supérieure 12 fourni dans un seul tôlage 13. Cet ensemble 13 est déposé sur le cadre support 2 et est maintenu en place à l'aide d'un dispositif escamotable de blocage 14 que l'on peut retirer même lorsque le dispositif de fermeture est mis en place sous un conteneur 15.The upper fixed plate 3 is optionally formed of several independent elements 8, 9 and 10, one of which is provided with a boss acting as an internal nozzle 11 and forms an internal nozzle-upper plate element 12 assembly provided in a single sheet 13. This assembly 13 is deposited on the support frame 2 and is held in place using a retractable blocking device 14 which can be removed even when the closure device is put in place under a container 15.

Cette mise en place s'opère simplement en approchant le dispositif de fermeture coulissant 1 du conteneur 15 de manière à introduire la busette interne 11 dans une brique de siège 16, montée par le côté intérieur du conteneur 15 lors de la préparation du revêtement réfractaire 17. Le positionnement de la brique de siège 16 est assuré par un anneau de centrage 18 métallique fixé au fond du conteneur. La manutention du dispositif de fermeture peut se faire à l'aide d'un chariot élévateur individuel motorisé ou manuel. La fixation du dispositif de fermeture coulissante se fait à l'aide, par exemple, de quatre boulons à oeillet 19 serrés sur des pattes 20 soudées au conteneur 15.This implementation is carried out simply by approaching the sliding closure device 1 of the container 15 so as to introduce the internal nozzle 11 into a seat brick 16, mounted by the interior side of the container 15 during the preparation of the refractory lining 17 The positioning of the seat brick 16 is ensured by a metal centering ring 18 fixed to the bottom of the container. The closing device can be handled using an individual motorized or manual forklift. The sliding closure is fixed using, for example, four eyelet bolts 19 tightened on lugs 20 welded to the container 15.

La surface de glissement 21 de la plaque supérieure 3 susdite doit être préférablement de` grande dimension afin d'assurer dans ledit dispositif de fermeture coulissant, une course d'appui suffisante aux plaques mobiles 6,7.The sliding surface 21 of the above-mentioned upper plate 3 must preferably be large in order to ensure in said sliding closing device, a sufficient bearing stroke for the movable plates 6,7.

Etant donné la difficulté de réaliser ce plan de glissement sous la forme d'un ensemble monobloc, on préfère assembler soigneusement plusieurs éléments 8, 9 et 10 dont seuls les éléments usagés sont à renouveler.Given the difficulty of producing this sliding plane in the form of a one-piece assembly, it is preferable to carefully assemble several elements 8, 9 and 10 of which only the used elements are to be renewed.

Afin de garantir l'alignement des faces de glissement de ces éléments, on utilise comme référence de positionnement la face de travail usinée 21 ou de glissement des plaques 8, 9 et 10 et non comme c'est généralement le cas, leur dos.In order to guarantee the alignment of the sliding faces of these elements, the machined working face 21 or the sliding face of the plates 8, 9 and 10 are used as positioning reference and not, as is generally the case, their back.

Des appuis latéraux 23 étant réalisés dans un même plan autour du plan de glissement, les différents éléments réfractaires sont déposés sur ces appuis 23 et serrés de manière rigide contre ceux-ci par l'intermédiaire de dispositifs adéquats non montrés s'appuyant au dos des plaques 8, 9 et 10.Lateral supports 23 being produced in the same plane around the sliding plane, the various refractory elements are deposited on these supports 23 and rigidly tightened against them by means of suitable devices not shown supported on the back of the plates 8, 9 and 10.

Le fait d'avoir prévu un dispositif escamotable 14 pour désolidariser le/les élément(s) de plaque supérieure entourant le chenal de coulée du dispositif de fermeture coulissant 1, rend ce dernier totalement indépendant du conteneur 15, même après soudage de la busette interne 11 au conteneur 15, notamment lorsque le chenal de coulée est empli d'acier après fermeture de la busette coulissante.The fact of having provided a retractable device 14 for detaching the top plate element (s) surrounding the runner from the sliding closure device 1, makes the latter completely independent of the container 15, even after welding of the internal nozzle 11 to the container 15, in particular when the pouring channel is filled with steel after closing the sliding nozzle.

Le mode de fixation décrit permet de monter le dispositif de fermeture 1 sur un conteneur 15 juste avant la coulée et de le retirer juste après.The method of attachment described makes it possible to mount the closure device 1 on a container 15 just before casting and to remove it just after.

Un dispositif de serrage 24 applique le chariot ou coulisseau 5 muni de la (des) plaque(s) mobile(s) 6 (7) contre la plaque fixe supérieure 3, de manière à obtenir un contact étanche dans la zone de coulée. Dans ledit dispositif de serrage 24, chaque plaque mobile 6, 7 est porté par une fourchette indépendante 25 articulée suivant toutes les directions pour permettre une parfaite application de ladite plaque mobile 6,7 contre le plan de glissement de la plaque fixe supérieure 3, qui transmet la force de pression contre la plaque fixe supérieure 3 par l'intermédiaire d'un levier 26.A clamping device 24 applies the carriage or slide 5 provided with the movable plate (s) 6 (7) against the upper fixed plate 3, so as to obtain a sealed contact in the casting zone. In said clamping device 24, each movable plate 6, 7 is carried by an independent fork 25 articulated in all directions to allow perfect application of said movable plate 6,7 against the sliding plane of the upper fixed plate 3, which transmits the pressure force against the upper fixed plate 3 by means of a lever 26.

La force de pression susdite est transmise au levier 26 par le dispositif de serrage 24 illustré aux figures 2 et 4, constitué d'une barre basculante 27 sensiblement horizontale, maintenue latéralement par deux axes 27' introduits dans des orifices de forme allongée 28 et par un boîtier 28' de manière à pouvoir osciller et glisser dans un plan sensiblement vertical avec un jeu de quelques millimètres et repoussés par au moins un ressort 29 agissant au voisinage de son point milieu. Dans le dispositif de serrage décrit ci-dessus, la force exercée par la barre basculante 27 sur un ou plusieurs culbuteur(s) 30 se déplaçant simultanément le long de ladite barre basculante 27 augmentera au fur et à mesure qu'un patin 30' du culbuteur 30 se rapprochera du point ou de la zone d'application du ou des ressort(s) 29.The above-mentioned pressure force is transmitted to the lever 26 by the clamping device 24 illustrated in FIGS. 2 and 4, consisting of a substantially horizontal tilting bar 27, held laterally by two axes 27 ′ introduced into elongated orifices 28 and by a housing 28 'so as to be able to oscillate and slide in a substantially vertical plane with a play of a few millimeters and repelled by at least one spring 29 acting in the vicinity of its midpoint. In the clamping device described above, the force exerted by the tilting bar 27 on one or more rocker (s) 30 moving simultaneously along said tilting bar 27 will increase as a pad 30 'of the rocker arm 30 will approach the point or area of application of the spring (s) 29.

Lorsque le chariot 5 porte deux plaques susdites 6,7, son mouvement le long de la barre susdite permettra d'éloigner et desserrer la plaque usagée 6 disposée dans la zone de coulée et permettra simultanément la mise en place et le serrage progressif de la nouvelle plaque susdite 7 vers le chenal de coulée 31.When the carriage 5 carries two aforementioned plates 6,7, its movement along the aforesaid bar will make it possible to move away and loosen the used plate 6 placed in the casting area and will allow simultaneously the introduction and progressive tightening of the new aforementioned plate 7 towards the runner 31.

Une pression résiduelle faible permet d'extraire facilement et de remplacer dans la zone d'attente, une plaque usagée 6.A low residual pressure makes it easy to extract and replace a used plate 6 in the waiting area.

Le dispositif permet la mise en place de plaque mobile 6,7 destinée à un usage particulier, tel un orifice calibré pour le démarrage d'une ligne de l'installation de coulée continue ou encore une plaque de fermeture 7.The device allows the mobile plate 6,7 intended for a particular use to be put in place, such as a calibrated orifice for starting a line of the continuous casting installation or even a closing plate 7.

Dans une forme de réalisation particulière, le déplacement linéaire du chariot 5 est assuré par un dispositif du type tige filetée-écrou.In a particular embodiment, the linear movement of the carriage 5 is ensured by a device of the threaded rod-nut type.

La tige filetée 32 est entraînée en rotation par un moteur électrique 33 sur lequel est monté un réducteur de vitesse 34. Il est avantageux de prévoir deux vitesses, la vitesse lente permettant un laminage précis du jet de métal liquide, l'autre permettant un changement rapide de la plaque susdite.The threaded rod 32 is rotated by an electric motor 33 on which is mounted a speed reducer 34. It is advantageous to provide two speeds, the slow speed allowing precise rolling of the jet of liquid metal, the other allowing a change quick of the above plate.

L'écrou d'entrainement 35 est avantageusement porté par une pièce en forme de U destinée à déplacer le chariot 5 en agissant d'un côté ou de l'autre, de sorte _ que la plaque de réserve 7 pousse la plaque en service 6. Cette conception permet d'éviter toute infiltration de métal liquide, en particulier lorsque la ligne de séparation des plaques passe devant l'orifice de coulée 31. En outre, la tige filetée 32 est avantageusement entourée d'un dispositif extensible de forme conique formant une gaine de protection 32' autour de la tige filetée 32.The drive nut 35 is advantageously carried by a U-shaped piece intended to move the carriage 5 by acting on one side or the other, so that the reserve plate 7 pushes the plate in service 6 This design makes it possible to avoid any infiltration of liquid metal, in particular when the line of separation of the plates passes in front of the pouring orifice 31. In addition, the threaded rod 32 is advantageously surrounded by an expandable device of conical shape forming a protective sheath 32 'around the threaded rod 32.

Enfin, le dispositif de fermeture 1 comporte sous la plaque mobile 6 en position de travail, dans le prolongement de l'axe du chenal de coulée 30, un tube de coulée 36 solidaire d'une plaque inférieure 37 maintenue en place par une fourche support 38, pivotant dans un plan vertical, autour du point d'application d'un levier 38'.Finally, the closing device 1 comprises, under the movable plate 6 in the working position, in the extension of the axis of the pouring channel 30, a pouring tube 36 secured to a lower plate 37 held in place by a support fork. 38, pivoting in a vertical plane, around the point of application of a lever 38 '.

Cette fourche support 38 est maintenue en position haute par un ensemble de quatre ressorts 39, fixés par les boulons 40, permettant ainsi d'appliquer fortement la plaque inférieure 37 contre la face inférieure de la plaque mobile 6.This support fork 38 is held in the high position by a set of four springs 39, fixed by the bolts 40, thus making it possible to strongly apply the lower plate 37 against the lower face of the movable plate 6.

En vue de permettre le retrait manuel de la plaque inférieure éventuellement solidaire du tube de coulée 36, l'action des ressorts 39 susdits est contrebalancée par des vérins 41. Lorsqu'au cours d'une opération de coulée, `on s'aperçoit que le tube plongeur 36 est défectueux, une plaque mobile 7 de fermeture est amenée par glissement le long des plaques supérieure 3 et inférieure 37 fixes, en face de l'orifice de coulée 30. La fourche support 38 supportant le tube de coulée 36 est abaissée au moyen de vérins pneumatiques 41 agissant à l'encontre des ressorts 39. Le tube de coulée peut alors être retiré manuellement à l'aide de la fourche 42 et remplacé par un tube neuf. La fourche 42 susdite est avantageusement articulée de manière qu'il soit aisé de retirer la plaque inférieure et le tube de coulée sans relever le conteneur 15 ou le répartiteur. Ceci assure aux diverses lignes de coulée une indépendance totale des lignes entre elles.In order to allow manual removal of the lower plate, which may be integral with the pouring tube 36, the action of the above-mentioned springs 39 is counterbalanced by jacks 41. When during a casting operation, `we see that the dip tube 36 is defective, a movable closing plate 7 is brought by sliding along the upper 3 and lower 37 fixed plates, opposite the pouring orifice 30. The support fork 38 supporting the pouring tube 36 is lowered by means of pneumatic cylinders 41 acting against the springs 39. The pouring tube can then be removed manually using the fork 42 and replaced by a new tube. The aforementioned fork 42 is advantageously articulated so that it is easy to remove the lower plate and the pouring tube without raising the container 15 or the distributor. This ensures independence for the various casting lines total lines between them.

Aux figures 2 et 4, chaque vérin 41 est par exemple constitué d'un soufflet métallique obturé à ses extrémités par les brides métalliques 43. L'une des brides métalliques est munie d'une adduction de gaz 44 sous pression permettant d'actionner le vérin pneumatiquement.In FIGS. 2 and 4, each jack 41 is for example constituted by a metal bellows closed at its ends by the metal flanges 43. One of the metal flanges is provided with a supply of gas 44 under pressure making it possible to actuate the pneumatically cylinder.

La busette interne 11 est réalisée en matière poreuse aux gaz et est munie d'adduction de gaz ménagée dans la plaque supérieure 3 pour injecter du gaz, notamment inerte, dans le chenal de coulée 31 au travers le bossage poreux 11 de la plaque supérieure 3.The internal nozzle 11 is made of a porous material for gases and is provided with a gas supply formed in the upper plate 3 for injecting gas, in particular inert, into the pouring channel 31 through the porous boss 11 of the upper plate 3 .

Le dispositif de fermeture coulissant permet la mise en oeuvre d'un ensemble monobloc comportant une plaque inférieure et un tube de coulée incorporé à cette dernière. Il permet le remplacement d'un tel ensemble éventuellement défectueux par un ensemble neuf sans nécessité d'interrompre la coulée ni de relever le répartiteur.The sliding closure device allows the implementation of a one-piece assembly comprising a bottom plate and a pouring tube incorporated therein. It allows the replacement of such a possibly defective assembly by a new assembly without the need to interrupt the casting or to raise the distributor.

Contrairement aux tubes de coulée connus, rapportés à une plaque inférieure distincte, permettant eux aussi le retrait des tubes de couléé sans nécessité de relever le répartiteur, l'ensemble monobloc décrit ci-dessus présente l'avantage de ne comporter aucun joint. Le dispositif suivant l'invention permet donc d'obtenir une protection efficace du joint de coulée,puisqu'il ne fait intervenir que des connexions constituées de deux plaques appliquées l'une contre l'autre. Ces connexions planes présentent généralement une excellente étanchéité et sont susceptibles d'être aisément inertisées.Unlike known pouring tubes, attached to a separate lower plate, also allowing the withdrawal of the pouring tubes without the need to raise the distributor, the monobloc assembly described above has the advantage of having no seal. The device according to the invention therefore makes it possible to obtain effective protection of the pouring joint, since it only involves connections made up of two plates applied one against the other. These flat connections generally have an excellent seal and are capable of being easily inertized.

Il est évident que l'invention n'est pas limitée aux formes de réalisation décrites ci-dessus et que de nombreuses modifications peuvent être apportées à ces dernières sans pour autant les soustraire du cadre de l'invention, du moins si elles ne vont pas à l'encontre des revendications suivantes.It is obvious that the invention is not limited to the embodiments described above and that many modifications can be made to the latter without removing them from the scope of the invention, at least if they do not go against the following claims.

Claims (13)

1. Dispositif de fermeture coulissant pour conteneur sidérurgique ou métallurgique constitué d'un cadre support comprenant une plaque supérieure fixe, elle-même formée d'au moins un élément réfractaire pourvu d'un orifice ce coulée au moins et éventuellement maintenue dans un cadre métallique et au moins une plaque coulissante, éventuellement montée de manière amovible dans un coulisseau de façon à glisser par rapport à la plaque supérieure fixe contre laquelle elle est appliquée, ce dispositif étant caractérisé en ce qu'il permet de désolidariser au moins un élément (9) de la plaque supérieure (3), monté de manière amovible sur ledit dispositif (1) avant sa mise en place sous le conteneur (15), de façon que l'élément (9) de plaque (3), que l'on sépare du dispositif(1)reste solidaire du conteneur (15), lorsque, lors d'une interruption de l'opération de coulée, on éloigne le dispositif (1) dudit conteneur.1. Sliding closure device for a steel or metallurgical container consisting of a support frame comprising a fixed upper plate, itself formed of at least one refractory element provided with an orifice for this casting at least and possibly maintained in a metal frame and at least one sliding plate, optionally removably mounted in a slide so as to slide relative to the fixed upper plate against which it is applied, this device being characterized in that it makes it possible to separate at least one element (9 ) of the upper plate (3), removably mounted on said device (1) before it is placed under the container (15), so that the plate element (9) (3), which is separates from the device (1) remains integral with the container (15), when, during an interruption of the casting operation, the device (1) is moved away from said container. 2. Dispositif suivant la revendication 1, caractérisé en ce que chaque élément(8, 9 et 10)de plaque supérieure (3) susdit ne représente qu'une partie de la surface de glissement(21), par rapport à chaque plaque mobile(6,7.)2. Device according to claim 1, characterized in that each element (8, 9 and 10) of the above-mentioned upper plate (3) represents only part of the sliding surface (21), relative to each movable plate ( 6.7.) 3. Dispositif suivant la revendication 1 ou 2, caractérisé en ce que la face de glissement(21)de chaque élément de la plaque supérieure par rapport à la plaque coulissante est maintenue contre des appuis de référence(23)ménagés dans les parois du cadre support par des moyens agissant au dos de chaque élément de plaque(8, 9 et 10.)3. Device according to claim 1 or 2, characterized in that the sliding face (21) of each element of the upper plate relative to the sliding plate is held against reference supports (23) formed in the walls of the frame support by means acting on the back of each plate element (8, 9 and 10.) 4. Dispositif suivant la revendication 3, caractérisé en ce qu'un premier élément éventuellement amovible de la plaque supérieure est adjacent à au moins un autre élément de plaque supérieure, dont au moins une partie de la face de glissement(21)est appliquée rigidement contre des appuis(23)situés dans le plan de glissement (21) del'élément amovible(9)susdit de la plaque supérieure (3.)4. Device according to claim 3, characterized in that a first element possibly removable from the upper plate is adjacent to at least one other element of upper plate, at least part of the sliding face (21) of which is rigidly applied against supports (23) located in the sliding plane (21) of the above-mentioned removable element (9) of the upper plate (3.) 5. Dispositif suivant la revendication 4, caractérisé en ce qu'un premier élément(9)éventuellement amovible de la plaque supérieure(3)est adjacent à au moins un autre élément(8,10)de plaque supérieure (3), appliqué rigidement contre des appuis(23)rapportés aux appuis du premier élément(9)susdit.5. Device according to claim 4, characterized in that a first element (9) optionally removable from the upper plate (3) is adjacent to at least one other element (8,10) of upper plate (3), applied rigidly against supports (23) relative to the supports of the above-mentioned first element (9). 6. Dispositif suivant l'une quelconque des revendications précédentes, caractérisé en ce que la plaque supérieure présente à sa partie supérieure, un bossage constituant une busette interne(11)destinée à pénétrer dans la brique de siége(16.)6. Device according to any one of the preceding claims, characterized in that the upper plate has at its upper part, a boss constituting an internal nozzle (11) intended to penetrate into the seat brick (16.) 7. Dispositif suivant la revendication 6, caractérisé en ce que le bossage susdit de la plaque supérieure est poreux aux gaz et est muni d'une adduction (45) de gaz ménagée dans la plaque supérieure (3) pour injecter du gaz, notamment inerte, dans le chenal de coulée(31) au travers du bossage poreux(11)de la plaque supérieure (3.)7. Device according to claim 6, characterized in that the aforementioned boss of the upper plate is porous to gases and is provided with a gas supply (45) formed in the upper plate (3) for injecting gas, in particular inert , in the runner (31) through the porous boss (11) of the upper plate (3.) 8. Dispositif suivant l'une quelconque des revendications précédentes, caractérisé en ce qu'il comporte une série de plaques coulissantes(6,7)amenées en alternance sous l'orifice de coulée de la plaque supérieure (3) par translation dans un sens et conjointement, -le retrait étant effectué par translation dans le sens opposé.8. Device according to any one of the preceding claims, characterized in that it comprises a series of sliding plates (6,7) brought alternately under the pouring orifice of the upper plate (3) by translation in one direction and jointly, removal being effected by translation in the opposite direction. 9. Dispositif suivant la revendication 8, caractérisé en ce qu'il comporte deux plaques(6,7)coulissantes amenées en alternance sous l'orifice de coulée(30)de la plaque supérieure(3)par translation dans un sens et conjointement, le retrait étant effectué par translation dans le sens opposé.9. Device according to claim 8, characterized in that it comprises two sliding plates (6,7) brought alternately under the pouring orifice (30) of the upper plate (3) by translation in one direction and jointly, the withdrawal being effected by translation in the opposite direction. 10. Dispositif suivant la revendication 9, caractérisé en ce qu'il comporte une came qui s'étend symétriquement par rapport à un plan de bout passant par l'axe de coulée, sur laquelle agit au moins un ressort disposé symétriquement par rapport au plan susdit et le long de laquelle glisse au moins deux leviers montés sur un chariot(5)et destinés à appliquer chacune des plaques mobiles(6,7)contre le plan de glissement(21) de la plaque supérieure (3), de manière que la pression augmente lorsqu'une quelconque des plaques(6,7)se rapproche de l'orifice de coulée (30) et décroisse lorsqu'elle s'en écarte, permettant un retrait aisé de la plaque mobile(7)en position de repos.10. Device according to claim 9, characterized in that it comprises a cam which extends symmetrically with respect to an end plane passing through the casting axis, on which acts at least one spring disposed symmetrically with respect to the plane above and along which slides at least two levers mounted on a carriage (5) and intended to apply each of the movable plates (6,7) against the sliding plane (21) of the upper plate (3), so that the pressure increases when any of the plates (6,7) approaches the pouring orifice (30) and decreases when it moves away from it, allowing easy removal of the movable plate (7) in the rest position . 11. Dispositif suivant l'une quelconque des revendications, caractérisé en ce qu'il comporte, dans l'axe de coulée et sous l'une des plaques mobiles (6,7,) une plaque éventuellement solidaire d'un tube (36) de protection du jet qui plonge éventuellement dans la lingotière et maintenue en place dans une position fixe contre la face inférieure de l'autre plaque mobile (6,7,) à l'aide d'une fourche support(38) mobile dans un plan vertical.11. Device according to any one of claims, characterized in that it comprises, in the casting axis and under one of the movable plates (6, 7), a plate possibly secured to a tube (36) of protection of the jet which possibly plunges into the ingot mold and held in place in a fixed position against the underside of the other movable plate (6, 7) using a support fork (38) movable in a plane vertical. 12. Dispositif suivant la revendication 11, caractérisé en ce que la fourche support (38)susdite est appliquée vers le haut par un levier (38) sur lequel agit au moins un ressort(39)en compression partielle, à l'encontre duquel peut être appliqué au moins un vérin(41) en vue de permettre le retrait manuel de la plaque inférieure (37), munie éventuellement d'un tube de coulée (36) et ce, sans qu'il soit nécessaire de relever le répartiteur (15.)12. Device according to claim 11, characterized in that the above-mentioned support fork (38) is applied upwards by a lever (38) on which acts at least one spring (39) in partial compression, against which can be applied at least one cylinder (41) to allow manual removal of the bottom plate (37), optionally provided with a pouring tube (36) and this, without the need to raise the distributor (15 .) 13. Dispositif suivant la revendication 12, caractérisé en ce que chaque vérin (41) est constitué d'un soufflet métallique(41)obturé à ses extrémités par des brides métalliques(43)et actionné pneumatiquement.13. Device according to claim 12, characterized in that each jack (41) consists of a metal bellows (41) closed at its ends by metal flanges (43) and pneumatically actuated.
EP84870037A 1983-03-21 1984-03-14 Slide gate nozzle device for a vessel for the iron and steel or metallurgical industry Withdrawn EP0122904A3 (en)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
BE210366 1983-03-21
BE210366 1983-03-21

Publications (2)

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EP0122904A2 true EP0122904A2 (en) 1984-10-24
EP0122904A3 EP0122904A3 (en) 1987-11-19

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EP84870037A Withdrawn EP0122904A3 (en) 1983-03-21 1984-03-14 Slide gate nozzle device for a vessel for the iron and steel or metallurgical industry

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EP (1) EP0122904A3 (en)
JP (1) JPS59225876A (en)
BR (1) BR8401275A (en)
ZA (1) ZA842049B (en)

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WO1991003339A1 (en) * 1989-08-30 1991-03-21 International Industrial Engineering S.A. Sealable casting device for a metallurgical container
US5544695A (en) * 1993-06-01 1996-08-13 Harasym; Michael Antivortexing nozzle system for pouring molten metal
US9221098B2 (en) 2010-03-19 2015-12-29 Vesuvius Crucible Company Inner nozzle for transferring molten metal contained in a vessel, system for clamping said nozzle and casting device

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Publication number Priority date Publication date Assignee Title
US9108245B2 (en) * 2008-04-17 2015-08-18 Stopinc Aktiengesellschaft Sliding closure for a receptacle containing molten metal
EP2268432B1 (en) * 2008-04-17 2016-04-13 Stopinc Aktiengesellschaft Closing plate and sliding closure on the spout of a receptacle for molten metal
US8879064B2 (en) 2011-12-23 2014-11-04 Electro Scientific Industries, Inc. Apparatus and method for transporting an aerosol

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DE1935401B2 (en) * 1968-07-12 1970-12-03 Interstop Ag Sliding closure for pouring pans provided with a bottom pouring opening or similar containers for pouring liquid metals, especially steel
DE2737691B2 (en) * 1977-08-20 1980-01-10 Didier-Werke Ag, 6200 Wiesbaden Slide lock
DE2167251C2 (en) * 1971-12-10 1982-07-29 Stopinc AG, 6340 Baar Slider closure on the spout of vessels containing metallic melt

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Publication number Priority date Publication date Assignee Title
DE1935401B2 (en) * 1968-07-12 1970-12-03 Interstop Ag Sliding closure for pouring pans provided with a bottom pouring opening or similar containers for pouring liquid metals, especially steel
DE2167251C2 (en) * 1971-12-10 1982-07-29 Stopinc AG, 6340 Baar Slider closure on the spout of vessels containing metallic melt
DE2737691B2 (en) * 1977-08-20 1980-01-10 Didier-Werke Ag, 6200 Wiesbaden Slide lock

Cited By (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO1991003339A1 (en) * 1989-08-30 1991-03-21 International Industrial Engineering S.A. Sealable casting device for a metallurgical container
TR26464A (en) * 1989-08-30 1995-03-15 Int Ind Eng Sa CUSTOMIZED CASTING OR METALLURGY CONTAINER CASTING MACHINE
US5544695A (en) * 1993-06-01 1996-08-13 Harasym; Michael Antivortexing nozzle system for pouring molten metal
CN1054088C (en) * 1993-12-06 2000-07-05 罗宁·麦金公司 Antivortexing nozzle system for pouring molten metal
US9221098B2 (en) 2010-03-19 2015-12-29 Vesuvius Crucible Company Inner nozzle for transferring molten metal contained in a vessel, system for clamping said nozzle and casting device
US9808863B2 (en) 2010-03-19 2017-11-07 Vesuvius Crucible Company Tube exchange device for holding and replacing a pouring nozzle, and assembly of a tube exchange device and a pouring nozzle

Also Published As

Publication number Publication date
ZA842049B (en) 1984-10-31
BR8401275A (en) 1984-10-30
EP0122904A3 (en) 1987-11-19
JPH0438506B2 (en) 1992-06-24
JPS59225876A (en) 1984-12-18

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