FR2555719A1 - Device for closing off a tap hole - Google Patents

Device for closing off a tap hole Download PDF

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Publication number
FR2555719A1
FR2555719A1 FR8318978A FR8318978A FR2555719A1 FR 2555719 A1 FR2555719 A1 FR 2555719A1 FR 8318978 A FR8318978 A FR 8318978A FR 8318978 A FR8318978 A FR 8318978A FR 2555719 A1 FR2555719 A1 FR 2555719A1
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FR
France
Prior art keywords
closing
arm
container
plate
closure device
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.)
Granted
Application number
FR8318978A
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French (fr)
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FR2555719B1 (en
Inventor
Guy Forestier
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Clecim SAS
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Clecim SAS
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Filing date
Publication date
Application filed by Clecim SAS filed Critical Clecim SAS
Priority to FR8318978A priority Critical patent/FR2555719B1/en
Publication of FR2555719A1 publication Critical patent/FR2555719A1/en
Application granted granted Critical
Publication of FR2555719B1 publication Critical patent/FR2555719B1/en
Expired legal-status Critical Current

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Classifications

    • BPERFORMING OPERATIONS; TRANSPORTING
    • B22CASTING; POWDER METALLURGY
    • B22DCASTING OF METALS; CASTING OF OTHER SUBSTANCES BY THE SAME PROCESSES OR DEVICES
    • B22D41/00Casting melt-holding vessels, e.g. ladles, tundishes, cups or the like
    • B22D41/14Closures
    • FMECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F27FURNACES; KILNS; OVENS; RETORTS
    • F27BFURNACES, KILNS, OVENS, OR RETORTS IN GENERAL; OPEN SINTERING OR LIKE APPARATUS
    • F27B3/00Hearth-type furnaces, e.g. of reverberatory type; Tank furnaces
    • F27B3/10Details, accessories, or equipment peculiar to hearth-type furnaces
    • F27B3/19Arrangements of devices for discharging
    • FMECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F27FURNACES; KILNS; OVENS; RETORTS
    • F27DDETAILS OR ACCESSORIES OF FURNACES, KILNS, OVENS, OR RETORTS, IN SO FAR AS THEY ARE OF KINDS OCCURRING IN MORE THAN ONE KIND OF FURNACE
    • F27D3/00Charging; Discharging; Manipulation of charge
    • F27D3/15Tapping equipment; Equipment for removing or retaining slag

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  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • General Engineering & Computer Science (AREA)
  • Furnace Charging Or Discharging (AREA)

Abstract

Device for closing off, from beneath, a tap hole 3 through which steel is poured from a container 1 into a pouring ladle 2. It comprises a horizontal closure plate 5 set at the end of a horizontal arm 6 whose other end 8 pivots on a vertical rod 7 set on the outside of the container.

Description

Dispositif de fermeture d'un trou de coulée
La présente invention se rapporte à un dispositif de fermeture par en dessous d'un trou de coulée de l'acier contenu dans un récipient, en particulier de l'orifice permettant la coulée de 1' acier liquide depuis un four électrique vers une poche de coulée placée sous cet orifice.
Device for closing a tap hole
The present invention relates to a device for closing from below a taphole of the steel contained in a container, in particular the orifice allowing the pouring of liquid steel from an electric furnace to a ladle. casting placed under this orifice.

Les dispositifs de ce genre connus actuellement se décomposent en deux catégories : les fermetures a plaque coulissante d'une part et les fermetures a plaque basculante d'autre part. Devices of this kind currently known fall into two categories: sliding plate closures on the one hand and tilting plate closures on the other hand.

Les fermetures a plaque coulissante permettent généralement un réglage, voire même une régulation, de l'épaisseur du jet. Elles sont constituées par une mécanique complexe, donc onéreuse, et en général placée pres du rayonnement et des fumées en provenance de la poche, donc sujette a une détérioration rapide. Les fermetures a plaque basculante présentent l'inconvénient de nécessiter un relativement grand encombrement vertical, ce qui oblige a prévoir un assez long trajet pour le jet d'acier liquide entre le trou de coulée et la poche, ce long trajet entraînant une perte de température. et une oxydation de l'acier liquide. Sliding plate closures generally allow adjustment, or even regulation, of the thickness of the spray. They are made up of a complex mechanism, therefore expensive, and generally placed near radiation and fumes from the pocket, therefore subject to rapid deterioration. Tilting plate closings have the drawback of requiring a relatively large vertical bulk, which means that a fairly long path has to be provided for the jet of liquid steel between the taphole and the ladle, this long path causing a loss of temperature. . and oxidation of the liquid steel.

Le dispositif de fermeture de l'invention ne présente pas les inconvénients de ces dispositifs connus. I1 est caractérisé en ce qu'il comporte une plaque horizontale de fermeture placée en bout d'un bras horizontal dont l'autre extérmité est rendue pivotante autour d'un axe vertical placé a l'extérieur du récipient contenant l'acier liquide. The closure device of the invention does not have the drawbacks of these known devices. I1 is characterized in that it comprises a horizontal closing plate placed at the end of a horizontal arm, the other end of which is made pivoting about a vertical axis placed outside the container containing the liquid steel.

Avantageusement par ailleurs, le dispositif de l'invention com- porte un carter de protection disposé sur le côté du récipient, dans lequel le bras et la plaque de fermeture viennent se loger après ouverture du trou de coulée par pivotement dudit bras. On protège ainsi au maximum, pendant la coulée, l'ensemble du dispositif de fermeture des projections d'acier liquide, des fumées et des flammes. Advantageously, moreover, the device of the invention comprises a protective casing arranged on the side of the container, in which the arm and the closure plate are received after opening the tap hole by pivoting said arm. This protects as much as possible, during casting, the entire closure device from liquid steel projections, fumes and flames.

L'invention, ses caractéristiques et avantages, seront mieux compris a l'aide de la description suivante d'un exemple de réalisation en référence aux dessins annexés dans lesquels - la figure 1 est une vue d'ensemble schématique, en coupe latérale partielle, du dispositif de fermeture de l'invention.  The invention, its characteristics and advantages, will be better understood with the aid of the following description of an exemplary embodiment with reference to the appended drawings in which - FIG. 1 is a schematic overview, in partial side section, of the closure device of the invention.

- la figure 2 est une vue schématique de dessus du dispositif de la figure 1.- Figure 2 is a schematic top view of the device of Figure 1.

En se reportant à l'ensemble des figures 1 et 2, la référence 1 désigne une rigole horizontale de coulée, attenante à la sole d'un four électrique, non représentée, et par laquelle au moins une partie du contenu du four peut s'écouler dans une poche de coulée 2, après débouchage du trou de coulée 3. De manière tres classique, un bouchon 4 de poudre de produit réfractaire a été placé à l'endroit du trou 3 avant la fusion des ferrailles afin de mettre la plaque 5 de fermeture du trou 3 à l'abri de l'acier liquide. Referring to all of Figures 1 and 2, the reference 1 designates a horizontal pouring channel, adjoining the bottom of an electric oven, not shown, and by which at least part of the contents of the oven can pour into a ladle 2, after unblocking the tap hole 3. In a very conventional manner, a plug 4 of refractory powder was placed at the location of the hole 3 before melting the scrap in order to put the plate 5 closing hole 3 away from liquid steel.

Conformément à l'invention, la plaque horizontale 5 est placée en bout d'un bras horizontal 6 dont l'autre extrémité 8 peut pivoter d'un angle de 90 degrés autour d'un axe 7, vertical et situé à l'extérieur de la rigole 1. According to the invention, the horizontal plate 5 is placed at the end of a horizontal arm 6, the other end 8 of which can pivot by an angle of 90 degrees around an axis 7, vertical and located outside of laugh 1.

Comme on le voit sur les dessins, l'extrémité 8 du bras 6 est portée par un arbre vertical 9 qu'un ressort 10, poussant sur un épaulement 11 de cet arbre limité en course par une rondelle 12 fixée sur le côté de la rigole 1, vient tirer vers le haut de manière à appliquer la plaque de fermeture 5 contre la pièce 13 renforçant l'orifice du trou de coulée 3. As can be seen in the drawings, the end 8 of the arm 6 is carried by a vertical shaft 9 than a spring 10, pushing on a shoulder 11 of this shaft limited in stroke by a washer 12 fixed to the side of the channel 1, pulls upwards so as to apply the closing plate 5 against the part 13 reinforcing the orifice of the taphole 3.

L'ensemble constitué par le bras 6 et la plaque de fermeture 5 vient se loger dans un carter 14. de forme allongée en conséquence dans le sens horizontal, après avoir pivoté de 90 degrés à partir de la position de la figure 1. The assembly constituted by the arm 6 and the closing plate 5 is housed in a casing 14. accordingly elongated in the horizontal direction, after having pivoted 90 degrees from the position of FIG. 1.

Le pivotement de l'arbre 9, dans un sens ou dans l'autre, est commandé par un dispositif classique à roues dentées 15, 16, chaîne de liaison 17, et ensemble moto-réducteur 18. Comme on le voit sur la figure 2, le carter 14 possede une ouverture supérieure 19 de visite de la partie supérieure de la plaque S lorsque celle-ci se trouve en position effacée dans le carter 14. The pivoting of the shaft 9, in one direction or the other, is controlled by a conventional device with toothed wheels 15, 16, connecting chain 17, and geared motor assembly 18. As seen in FIG. 2 , the casing 14 has an upper opening 19 for visiting the upper part of the plate S when the latter is in the retracted position in the casing 14.

Pour permettre l'ouverture du trou de coulée 3, il est nécessaire au préalable de contrecarrer l'action du ressort 10. Dans ce but, un vérin hydraulique à simple-effet 20 est fixé sur le côté de la rigole 1 de manie- re coaxiale à l'arbre9 auquel il est relié par une butée à billes 21. En alimentant ce vérin en fluide hydraulique par la conduite 22, on annule la pression du ressort lo ce qui permet de décoller la plaque S de la pièce 13 et de pouvoir faire ensuite tourner aisément le bras 6.  To allow the opening of the taphole 3, it is necessary beforehand to counteract the action of the spring 10. For this purpose, a single-acting hydraulic cylinder 20 is fixed to the side of the channel 1 in a manner coaxial with the shaft 9 to which it is connected by a thrust ball bearing 21. By supplying this jack with hydraulic fluid via the line 22, the pressure of the spring lo is canceled, which makes it possible to take off the plate S from the part 13 and to be able then easily rotate the arm 6.

Le fonctionnement du dispositif de l'invention est le suivant
Au départ, la poche de coulée 2 est absente, et la rigole 1 vide d'acier liquide, soit parce que le four est vide, soit parce qutil a été basculé de manière à ce que l'acier ne puisse s'écouler dans la rigole 1. Le bras 6 et la plaque S sont en position effacée dans le carter 14.
The operation of the device of the invention is as follows
At the start, the ladle 2 is absent, and the channel 1 empties of liquid steel, either because the oven is empty, or because it has been tilted so that the steel cannot flow into the laughs 1. The arm 6 and the plate S are in the erased position in the casing 14.

On alimente en fluide hydraulique le vérin 20 de manière à annuler l'action du ressort 10, puis on alimente en énergie électrique le groupe moto-réducteur 18, de manière à faire tourner l'arbre 9 de 90 degrés. La plaque S vient alors s'appliquer sur la pièce 13, fermant le trou de coulée 3. Hydraulic fluid is supplied to the jack 20 so as to cancel the action of the spring 10, then the motor-reducing unit 18 is supplied with electrical energy, so as to rotate the shaft 9 by 90 degrees. The plate S is then applied to the part 13, closing the taphole 3.

On relâche la pression du vérin 20, ce qui permet au ressort 10 de pousser vers le haut l'arbre 9 et donc d'appliquer la plaque 5 contre la pièce 13. On remplit l'orifice 3 de poudre de produit réfractaire de façon à former un bouchon de protection 4. The pressure of the jack 20 is released, which allows the spring 10 to push up the shaft 9 and therefore to apply the plate 5 against the part 13. The orifice 3 is filled with powder of refractory product so as to form a protective cap 4.

Le four électrique est alors basculé dans sa position normale de fonctionnement, ce qui replace la rigole 1 dans sa position horizontale de la figure 1. il est alimenté en ferrailles et mis en route, de sorte que de l'acier liquide remplit la rigole 1. The electric oven is then tilted in its normal operating position, which replaces the channel 1 in its horizontal position in FIG. 1. it is supplied with scrap and started up, so that liquid steel fills the channel 1 .

Entre temps, une poche de coulée 2 est acheminée sous llorifi- ce 3. Lorsque la fusion de l'acier est terminée, on procède à la coulée de la façon suivante
On alimente le vérin 20 de façon à annuler l'action du ressort io; la plaque S n'est alors plus appliquée contre la pièce 13. On alimente alors le groupe motoréducteur 18 de maniere à faire tourner le bras 6, et donc la plaque 5, de 90 degrés, ce qui permet à cet ensemble 5, 6 de venir se loger dans le carter de protection 14.
In the meantime, a ladle 2 is conveyed under fire 3. When the melting of the steel is finished, the casting is carried out as follows
The jack 20 is fed so as to cancel the action of the spring io; the plate S is then no longer applied against the part 13. The power unit 18 is then fed so as to rotate the arm 6, and therefore the plate 5, by 90 degrees, which allows this assembly 5, 6 to come and stay in the protective casing 14.

Le bouchon 4 tombe alors de iui-même dans la poche 2 et l'acier liquide 23 contenu dans la rigole s'écoule par le trou 3 dans la poche de coulée 2. Pour arrêter la coulée, on bascule à nouveau le four électrique de manière à relever la rigole 1 vers le haut, puis on éloigne la poche 2. The plug 4 then falls by itself into the pocket 2 and the liquid steel 23 contained in the channel flows through the hole 3 in the casting ladle 2. To stop the casting, the electric furnace is again tilted. so as to raise the channel 1 upwards, then move the pocket 2 away.

On est alors revenu au point de départ.We then returned to the starting point.

Bien que cela n'ait pas été représenté sur le dessin, on peut recouvrir la poche 12, pendant la coulée, d'un couvercele de protection ne laissant libre qu'une ouverture suffisante pour permettre la coulée.  Although this has not been shown in the drawing, it is possible to cover the pocket 12, during casting, with a protective cover leaving only an opening sufficient to allow casting.

Claims (5)

REUENDICATIONSREUENDICATIONS 1. Dispositif de fermeture par en dessous d'un trou de coulée 13) de l'acier contenu dans un récipient (1), caractérisé en ce qu'il comporte une plaque horizontale de fermeture (5) placée en bout d'un bras horizontal (6) dont l'autre extrémité (8) est rendue pivotante autour d'un axe vertical (7) placé à 11 extérieur dudit ré- cipient. 1. Closing device from below a taphole 13) of the steel contained in a container (1), characterized in that it comprises a horizontal closing plate (5) placed at the end of an arm horizontal (6) the other end (8) of which is pivoted about a vertical axis (7) placed outside of said container. 2. Dispositif de fermeture selon la revendication l, caractérisé en ce qu'il comporte en outre des moyens de réglage 110,20) de la position verticale de ladite extrémité pivotante. 2. Closure device according to claim l, characterized in that it further comprises means 110,20 for adjusting the vertical position of said pivoting end. 3. Dispositif de fermeture selon la revendication 2, caractérisé en ce que lesdits moyens de réglage comportent des moyens permanents (10) de traction vers le haut de ladite extrémité pivotante et des moyens contraires et réglables (20) de pression vers le bas de celle-ci. 3. Closure device according to claim 2, characterized in that said adjustment means comprise permanent means (10) for pulling upwards said pivoting end and opposite and adjustable means (20) for pressing downwards of that -this. 4. Dispositif de fermeture selon l'une quelconque des revendications 1 à 3, caractérisé en ce qu'il comporte un carter de protection (14), disposé sur le côté dudit récipient, dans lequel le bras et la plaque de fermeture viennent se loger après ouverture du trou de coulée par pivotement dudit bras. 4. Closure device according to any one of claims 1 to 3, characterized in that it comprises a protective casing (14), disposed on the side of said container, in which the arm and the closure plate are housed after opening the tap hole by pivoting said arm. 5. Dispositif de fermeture selon la revendication 4, caractérisé en ce que ledit carter comporte une ouverture (19) de visite de la plaque de fermeture, lorsque celle-ci est en position effacée dans ledit carter  5. Closure device according to claim 4, characterized in that said casing comprises an opening (19) for visiting the closing plate, when the latter is in the retracted position in said casing
FR8318978A 1983-11-24 1983-11-24 DEVICE FOR CLOSING A CASTING HOLE Expired FR2555719B1 (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
FR8318978A FR2555719B1 (en) 1983-11-24 1983-11-24 DEVICE FOR CLOSING A CASTING HOLE

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
FR8318978A FR2555719B1 (en) 1983-11-24 1983-11-24 DEVICE FOR CLOSING A CASTING HOLE

Publications (2)

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FR2555719A1 true FR2555719A1 (en) 1985-05-31
FR2555719B1 FR2555719B1 (en) 1988-05-13

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Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO1986004980A1 (en) * 1985-02-20 1986-08-28 Kortec Ag Apparatus and process for transferring a predetermined amount of liquid metal from a vessel containing a molten metal bath into a receiving container
FR2598437A1 (en) * 1986-05-06 1987-11-13 Vallourec METHOD AND DEVICE FOR CLEANING THE CASTING ORIFICE OF A SIDE CAST IRON OVEN
FR2616365A1 (en) * 1987-06-11 1988-12-16 Clecim Sa IMPROVED CLOSURE DEVICE WITH CLEANING A CASTING HOLE

Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB812216A (en) * 1956-01-13 1959-04-22 Geraetebau Anstalt A device for the tapping of fused media of high temperature preferably of molten metals from a crucible
FR1205919A (en) * 1957-04-19 1960-02-05 Geraetebau Anstalt Device for pouring molten fluid at high temperature
DE1281643B (en) * 1966-09-20 1968-10-31 Schloemann Ag Closing device for pouring ladles or intermediate container
DE1928400A1 (en) * 1968-06-18 1970-01-02 Metacon Ag Closing device for the bottom pouring opening of pouring pans
DE3041029A1 (en) * 1980-10-31 1982-06-16 Zimmermann & Jansen GmbH, 5160 Düren Bottom pour sliding stopper, esp. for arc melting furnaces - where guide rails force stopper plate upwards against bottom end of outlet nozzle

Patent Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB812216A (en) * 1956-01-13 1959-04-22 Geraetebau Anstalt A device for the tapping of fused media of high temperature preferably of molten metals from a crucible
FR1205919A (en) * 1957-04-19 1960-02-05 Geraetebau Anstalt Device for pouring molten fluid at high temperature
DE1281643B (en) * 1966-09-20 1968-10-31 Schloemann Ag Closing device for pouring ladles or intermediate container
DE1928400A1 (en) * 1968-06-18 1970-01-02 Metacon Ag Closing device for the bottom pouring opening of pouring pans
DE3041029A1 (en) * 1980-10-31 1982-06-16 Zimmermann & Jansen GmbH, 5160 Düren Bottom pour sliding stopper, esp. for arc melting furnaces - where guide rails force stopper plate upwards against bottom end of outlet nozzle

Cited By (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO1986004980A1 (en) * 1985-02-20 1986-08-28 Kortec Ag Apparatus and process for transferring a predetermined amount of liquid metal from a vessel containing a molten metal bath into a receiving container
FR2598437A1 (en) * 1986-05-06 1987-11-13 Vallourec METHOD AND DEVICE FOR CLEANING THE CASTING ORIFICE OF A SIDE CAST IRON OVEN
EP0248742A1 (en) * 1986-05-06 1987-12-09 Vallourec Industries Process and device for cleaning the tap hole of a steel furnace provided with an extended bottom tap hole
FR2616365A1 (en) * 1987-06-11 1988-12-16 Clecim Sa IMPROVED CLOSURE DEVICE WITH CLEANING A CASTING HOLE
US4875663A (en) * 1987-06-11 1989-10-24 Clecim Closure device with cleaning of a pouring hole

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Publication number Publication date
FR2555719B1 (en) 1988-05-13

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