EP0432073A1 - Device for continuous casting thin metallic products between two rolls - Google Patents
Device for continuous casting thin metallic products between two rolls Download PDFInfo
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- EP0432073A1 EP0432073A1 EP90470063A EP90470063A EP0432073A1 EP 0432073 A1 EP0432073 A1 EP 0432073A1 EP 90470063 A EP90470063 A EP 90470063A EP 90470063 A EP90470063 A EP 90470063A EP 0432073 A1 EP0432073 A1 EP 0432073A1
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- Prior art keywords
- cylinders
- small faces
- contact
- small
- ceramic
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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
- B22D11/00—Continuous casting of metals, i.e. casting in indefinite lengths
- B22D11/06—Continuous casting of metals, i.e. casting in indefinite lengths into moulds with travelling walls, e.g. with rolls, plates, belts, caterpillars
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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
- B22D11/00—Continuous casting of metals, i.e. casting in indefinite lengths
- B22D11/06—Continuous casting of metals, i.e. casting in indefinite lengths into moulds with travelling walls, e.g. with rolls, plates, belts, caterpillars
- B22D11/0637—Accessories therefor
- B22D11/0648—Casting surfaces
- B22D11/066—Side dams
Definitions
- the invention relates to the continuous casting of thin metallic products, in particular steel, on installations the ingot mold of which essentially consists of two energetically cooled cylinders, parallel and horizontal or substantially horizontal and rotating in opposite directions. More specifically, it relates to the means allowing the lateral closure of the casting space delimited by the cylinders, between them.
- the casting rolls have a perfectly cylindrical shape, in particular with sharp edges between the lateral face and the end faces.
- the small faces can be flat over all of their zones in contact with the end faces of the cylinders. There is then a planar contact between the cylinders and the small faces. They can also include a projecting part penetrating into the inter-cylinder space: each cylinder is then in contact not only with the planar part of the small face, but also with one of the lateral faces of its projecting part. So there is a wedge-shaped contact at right angles between the cylinders and the small faces.
- the object of the invention is to propose a configuration of the lateral parts of the head of a casting machine between rolls, including the rolls and the small faces, which makes it possible to limit as much as possible the infiltration of liquid metal out of the casting space.
- the subject of the invention is a device for the continuous casting of thin metallic products, of the type the ingot mold of which essentially consists of two energetically cooled substantially horizontal and parallel cylinders, rotating in opposite directions, and two lateral closing plates. , called “small faces", each maintained in contact with one end of each cylinder, and delimiting the casting space in cooperation with the cooled lateral surfaces of the cylinders, characterized in that the cylinders have ends of frustoconical shape and in that that the contact between the cylinders and the small faces is made between the lateral surfaces of these frustoconical ends and parts of the small faces matching their shape.
- the parts of the small faces in contact with the cylinders are made of ceramic, and the major part of the surface of the small faces in contact with the liquid steel is made of refractory material.
- the invention provides the cylinder-small face contacts with a particularly favorable shape for establishing a good seal.
- the use of ceramic provides low wear of the corresponding areas of the small faces and guarantees satisfactory conservation of this seal throughout the duration of the casting.
- this conical contact has the advantage of a reduced contact surface between the cylinders and the small faces. This minimizes the surfaces whose machining must be of excellent quality to maintain a good seal. On the other hand, this configuration allows easy adjustment of the play which could be created as a result of the wear of the small faces.
- Figure 1 shows a cylinder 1 intended to be mounted on a continuous casting machine for thin metallic products according to the invention.
- Figures 2 and 4 also show the second cylinder 1 ', identical to cylinder 1 and arranged parallel to it, their respective axes being located in the same horizontal plane. These cylinders are energetically cooled by an internal circulation of water, not shown.
- FIGS 2, 3 and 4 schematically show an embodiment of the invention.
- On the small face 5 are formed two curved surfaces 7, 7 ′ which, once the small face in place, match the conical surfaces 4a, 4′a of the cylinders.
- the surfaces 4a, 4′a, 7 and 7 ′ are machined precisely, so as to ensure an excellent quality contact, that a pressure applied to the rear 8 of the small face by known means not shown contributes to creating .
- these curved surfaces are formed on a part 9 of the small face made of ceramic and constituting its periphery.
- these materials are distinguished by wear resistance and significantly improved mechanical properties.
- these characteristics have decisive advantages if a lasting tight contact must be made between the cylinders and the small face.
- This ceramic part which is made of a material such as Syalon® boron nitride, silicon nitride, aluminum nitride, zirconia, chromium carbide does not constitute in the example described, as l said, that the periphery of the small face. It is generally not desirable to make the entire small ceramic face, because its cost would be too high, and above all its insulating properties would be insufficient, which would cause excessive solidification of the steel on their surface.
- the ceramic part 9 constitutes only the framework of the active part of the small face, the heart 10 of the latter, which represents the major part of its surface in contact with the liquid steel, being produced in a refractory material of the type conventionally used for composing small faces, based on silica or alumina.
- Figure 2 is only a schematic representation, on which the ratio of the dimensions of the various parts is not respected, in order to make the figure clearer.
- the cylinders 1, 1 ′ have a diameter of at least several tens of cm, while the minimum distance between their lateral surfaces 2, 2 ′, at the neck 11 defining the thickness of the product , is of the order of a few mm (for example 5 to 10 mm).
- the refractory core 10 therefore represents a proportion of the total surface of the small face substantially larger than that shown in FIG. 2.
- machines for casting metal products between cylinders sometimes incorporate on each of the small faces a part called a "pad" which closes the casting space in the area located just above and just below the neck.
- the pad has the particularity of being made of a material substantially more resistant to mechanical stresses and abrasion than the rest of the small face, for example a metallic material, because it is in contact with metal mainly or completely solidified which can exert a rolling effort on it.
- mount the pad on an elastic support allowing a some withdrawal from him.
- the small face according to the invention may also include a shoe 12 made of ceramic, visible in FIGS. 2 and 4. If it is mounted in an elastic manner by means of a device symbolized by the spring 14, it is advantageous that the part of the small face on which it must rub is also ceramic: there is thus a ceramic-ceramic contact 13 having good resistance to wear and the sealing of which can remain satisfactory throughout the use of the small face . If you do not want the pad to have elasticity, the simplest solution is of course to incorporate it into the construction on the small side.
- the small faces can be enclosed in a support 15 (not shown in FIG. 2) comprising members (not shown) enabling the small faces to be placed against the cylinders.
- the ceramic and refractory parts can be deposits made on a plate, for example metallic.
- zirconia is particularly suitable for this use for ceramic parts, because of the ease with which it can be adhered to a metal support.
- the small faces may comprise, in a known manner in their central part, an element penetrating inside the casting space, called an "insert", which may be in conventional refractory, in ceramic, or in any other material, and making it possible to improve the solidification conditions of the product.
- the cylinders may have, on their lateral surface, at each of the ends of their cylindrical part, a hollow etching intended to promote the attachment of the solidified skin of the product to the cylinder.
- this engraving is placed at the extreme limit of the cylindrical part and is flush with the contact zone between the cylinder and the small face, it is to be feared that it favors the infiltration of liquid metal. For this, it is preferable to place these engravings a few millimeters back from said contact area.
- the cylinders can, on the contrary, have external faces of larger section than the middle section.
- the geometry of the periphery of the small faces must then be modified accordingly compared to the configuration described above: its front part has a flared shape instead of narrowed.
- the contact between the cylinders and the small faces is this time made by means of a traction exerted on the supports of the small faces, and no longer by a pressure.
- FIG. 5 represents such a configuration, the various elements of the installation being designated by the same symbols as above.
Abstract
l'invention concerne un dispositif de coulée continue de produits métalliques minces, notamment en acier, du type dont la lingotière est essentiellement constituée de deux cylindres 1,1' énergiquement refroidis, sensiblement horizontaux et parallèles, tournant en sens opposés, et de deux plaques de fermeture latérale 5, dites "petites faces" maintenues chacune en contact avec une extrémité de chaque cylindre. Selon l'invention, les cylindres 1 présentent des extrémités de forme tronconique et le contact entre les cylindres et les petites faces est réalisé entre les surfaces latérales 4a de ces extrémités tronconiques et les surfaces 7, des parties périphériques 9 des petites faces épousant leur forme. Préférentiellement, les parties 9 des petites faces en contact avec les cylindres sont en céramique. <IMAGE>the invention relates to a device for the continuous casting of thin metallic products, in particular steel, of the type the ingot mold of which essentially consists of two cylinders 1,1 'energetically cooled, substantially horizontal and parallel, rotating in opposite directions, and two plates lateral closure 5, called "small faces" each maintained in contact with one end of each cylinder. According to the invention, the cylinders 1 have ends of frustoconical shape and the contact between the cylinders and the small faces is made between the lateral surfaces 4a of these frustoconical ends and the surfaces 7, peripheral parts 9 of the small faces conforming to their shape . Preferably, the parts 9 of the small faces in contact with the cylinders are made of ceramic. <IMAGE>
Description
L'invention concerne la coulée continue de produits métalliques minces, notamment en acier, sur des installations dont la lingotière est essentiellement constituée par deux cylindres énergiquement refroidis, parallèles et horizontaux ou sensiblement horizontaux et tournant en sens opposés. Plus précisément, elle concerne les moyens permettant de réaliser l'obturation latérale de l'espace de coulée délimité par les cylindres, entre eux.The invention relates to the continuous casting of thin metallic products, in particular steel, on installations the ingot mold of which essentially consists of two energetically cooled cylinders, parallel and horizontal or substantially horizontal and rotating in opposite directions. More specifically, it relates to the means allowing the lateral closure of the casting space delimited by the cylinders, between them.
Pour réaliser cette obturation latérale, il est connu d'utiliser des parois fixes, encore appelées "petites faces", présentant une surface verticale plaquée contre les extrémités des cylindres. L'un des problèmes qui doivent trouver une solution satisfaisante est celui de l'étanchéité entre les petites faces et les cylindres, afin d'éviter des infiltrations de métal en fusion hors de l'espace de coulée, qui seraient préjudiciables à la qualité du produit et détérioreraient la machine.To achieve this lateral closure, it is known to use fixed walls, also called "small faces", having a vertical surface pressed against the ends of the cylinders. One of the problems which must find a satisfactory solution is that of the seal between the small faces and the cylinders, in order to avoid infiltration of molten metal outside the casting space, which would be detrimental to the quality of the product and will damage the machine.
Habituellement, les cylindres de coulée ont une forme parfaitement cylindrique, avec notamment des arêtes vives entre la face latérale et les faces d'extrémités. Les petites faces peuvent être planes sur toutes leurs zones en contact avec les faces d'extrémités des cylindres. On a alors un contact plan entre les cylindres et les petites faces. Elles peuvent aussi comporter une partie saillante pénétrant dans l'espace inter-cylindres: chaque cylindre est alors en contact non seulement avec la partie plane de la petite face, mais aussi avec une des faces latérales de sa partie saillante. On a donc alors un contact en forme de coin à angle droit entre les cylindres et les petites faces.Usually, the casting rolls have a perfectly cylindrical shape, in particular with sharp edges between the lateral face and the end faces. The small faces can be flat over all of their zones in contact with the end faces of the cylinders. There is then a planar contact between the cylinders and the small faces. They can also include a projecting part penetrating into the inter-cylinder space: each cylinder is then in contact not only with the planar part of the small face, but also with one of the lateral faces of its projecting part. So there is a wedge-shaped contact at right angles between the cylinders and the small faces.
Avec de tels contacts, il est difficile de maintenir une étanchéité constamment satisfaisante de l'espace de coulée. Il faut, en effet, que l'usure des petites faces soit aussi réduite et homogène que possible sur toute leur surface de contact avec les cylindres. Or, plus cette surface est grande, plus l'usure a de chances d'être hétérogène. De plus, habituellement, ces petites faces doivent être réalisées en un matériau réfractaire présentant de bonnes propriétés isolantes, tel que la mousse de silice ou la dossolite, afin de limiter autant que possible la solidification du métal sur leur surface. Mais ces propriétés isolantes sont peu compatibles avec une résistance à l'abrasion élevée.With such contacts, it is difficult to maintain a constantly satisfactory seal in the casting space. It is necessary, in fact, that the wear of the small faces is as reduced and homogeneous as possible over their entire contact surface with the cylinders. However, the larger this surface, the more likely the wear is to be heterogeneous. In addition, usually, these small faces must be made of a refractory material having good insulating properties, such as silica foam or backsplash, in order to limit as much as possible the solidification of the metal on their surface. However, these insulating properties are not very compatible with high abrasion resistance.
Le but de l'invention est de proposer une configuration des parties latérales de la tête d'une machine de coulée entre cylindres, incluant les cylindres et les petites faces, qui permette de limiter autant que possible les infiltrations de métal liquide hors de l'espace de coulée.The object of the invention is to propose a configuration of the lateral parts of the head of a casting machine between rolls, including the rolls and the small faces, which makes it possible to limit as much as possible the infiltration of liquid metal out of the casting space.
A cet effet, l'invention a pour objet un dispositif de coulée continue de produits métalliques minces, du type dont la lingotière est essentiellement constituée de deux cylindres énergiquement refroidis sensiblement horizontaux et parallèles, tournant en sens opposés, et de deux plaques de fermeture latérales, dites "petites faces", maintenues chacune en contact avec une extrémité de chaque cylindre, et délimitant l'espace de coulée en coopération avec les surfaces latérales refroidies des cylindres, caractérisé en ce que les cylindres présentent des extrémités de forme tronconique et en ce que le contact entre les cylindres et les petites faces est réalisé entre les surfaces latérales de ces extrémités tronconiques et des parties des petites faces épousant leur forme.To this end, the subject of the invention is a device for the continuous casting of thin metallic products, of the type the ingot mold of which essentially consists of two energetically cooled substantially horizontal and parallel cylinders, rotating in opposite directions, and two lateral closing plates. , called "small faces", each maintained in contact with one end of each cylinder, and delimiting the casting space in cooperation with the cooled lateral surfaces of the cylinders, characterized in that the cylinders have ends of frustoconical shape and in that that the contact between the cylinders and the small faces is made between the lateral surfaces of these frustoconical ends and parts of the small faces matching their shape.
Dans une réalisation préférée, les parties des petites faces en contact avec les cylindres sont en céramique, et la majeure partie de la surface des petites faces en contact avec l'acier liquide est en matériau réfractaire.In a preferred embodiment, the parts of the small faces in contact with the cylinders are made of ceramic, and the major part of the surface of the small faces in contact with the liquid steel is made of refractory material.
Comme on l'aura compris, l'invention procure aux contacts cylindres-petites faces une forme particulièrement favorable à l'établissement d'une bonne étanchéité. De plus, l'utilisation de céramique procure une faible usure des zones correspondantes des petites faces et garantit une conservation satisfaisante de cette étanchéité pendant toute la durée de la coulée.As will be understood, the invention provides the cylinder-small face contacts with a particularly favorable shape for establishing a good seal. In addition, the use of ceramic provides low wear of the corresponding areas of the small faces and guarantees satisfactory conservation of this seal throughout the duration of the casting.
Par rapport aux contacts plans ou saillants utilisés jusqu'ici et décrits précédement, ce contact conique présente l'avantage d'une surface de contact réduite entre les cylindres et les petites faces. Cela permet de minimiser les surfaces dont l'usinage doit être d'excellente qualité pour maintenir une bonne étanchéité. D'autre part, cette configuration permet un rattrapage aisé du jeu qui pourrait se créer par suite de l'usure des petites faces.Compared to the planar or projecting contacts used hitherto and described above, this conical contact has the advantage of a reduced contact surface between the cylinders and the small faces. This minimizes the surfaces whose machining must be of excellent quality to maintain a good seal. On the other hand, this configuration allows easy adjustment of the play which could be created as a result of the wear of the small faces.
L'invention sera mieux comprise à la lecture de la description qui suit, faisant référence aux figures annexées suivantes:
- la figure 1 montre un cylindre du type particulier utilisé sur l'installation décrite;
- la figure 2 est une vue de face partielle schématique selon la direction II de la figure 3 d'une machine de coulée continue entre cylindres selon l'invention;
- la figure 3 est une section selon la ligne III-III de la figure 2;
- la figure 4 est une section selon la ligne IV-IV de la figure 2.
- la figure 5 est une demi-vue de dessus d'une machine selon l'invention dont les extrémités des cylindres présentent une conicité inverse de la précédente.
- Figure 1 shows a cylinder of the particular type used on the installation described;
- Figure 2 is a schematic partial front view in direction II of Figure 3 of a continuous casting machine between cylinders according to the invention;
- Figure 3 is a section along line III-III of Figure 2;
- Figure 4 is a section along line IV-IV of Figure 2.
- Figure 5 is a half top view of a machine according to the invention whose ends of the cylinders have a reverse taper to the previous one.
La figure 1 montre un cylindre 1 destiné à être monté sur une machine de coulée continue de produits métalliques minces selon l'invention. Les figures 2 et 4 montrent également le deuxième cylindre 1′, identique au cylindre 1 et disposé parallèlement à lui, leurs axes respectifs étant situés dans le même plan horizontal. Ces cylindres sont énergiquement refroidis par une circulation interne d'eau non représentée.Figure 1 shows a
Au lieu d'avoir des arêtes vives entre leur surface latérale refroidie 2, 2′ et leurs surfaces d'extrémités 3a, 3b, 3'a ils présentent des extrémités de forme tronconique, définissant chacune une surface conique 4a, 4b, 4′a qui est utilisée comme surface d'appui pour les petites faces. Dans l'exemple représenté, la conicité va dans le sens d'une réduction de la section des parties frontales du cylindre par rapport à la section de la partie médiane.Instead of having sharp edges between their cooled
Les figures 2, 3 et 4 montrent schématiquement un exemple de réalisation de l'invention. Aux cylindres 1, 1′, en rotation dans les sens indiqués par les flèches, qui viennent d'être décrits s'ajoutent deux petites faces, dont une seule 5 est représentée, obturant latéralement l'espace de coulée 6 défini par les surfaces latérales 2, 2′ des cylindres, de façon à lui donner une section rectangulaire dont la largeur va en diminuant au fur et à mesure que l'on descend dans la machine. Conformément à l'invention, sur la petite face 5 sont ménagées deux surfaces courbes 7, 7′ qui, une fois la petite face en place, épousent les surfaces coniques 4a, 4′a des cylindres. Les surfaces 4a, 4′a, 7 et 7′ sont usinées précisément, de manière à assurer un contact d'excellente qualité, qu'une pression appliquée sur l'arrière 8 de la petite face par des moyens connus non représentés contribue à créer. Dans la réalisation préférentielle représentée ici, ces surfaces courbes sont ménagées sur une partie 9 de la petite face réalisée en céramique et constituant sa périphérie. En effet, par rapport aux matériaux réfractaires classiques habituellement utilisés pour la construction des petites faces, ces matériaux se distinguent par une résistance à l'usure et des propriétés mécaniques nettement améliorées. Or, ces caractéristiques présentent des avantages déterminants si un contact étanche durable doit être réalisé entre les cylindres et la petite face.Figures 2, 3 and 4 schematically show an embodiment of the invention. To the
Cette partie en céramique, qui est réalisée en un matériau tel que le Syalon ® le nitrure de bore, le nitrure de silicium, le nitrure d'aluminium, la zircone, le carbure de chrome ne constitue dans l'exemple décrit, comme on l'a dit, que la périphérie de la petite face. Il n'est en effet généralement pas souhaitable de réaliser l'intégralité de la petite face en céramique, car son coût serait trop élevé, et surtout ses propriétés isolantes seraient insuffisantes, ce qui entraînerait une solidification excessive de l'acier sur leur surface. C'est pourquoi la partie céramique 9 ne constitue que le cadre de la partie active de la petite face, le coeur 10 de celle-ci, qui représente la majeure partie de sa surface en contact avec l'acier liquide, étant réalisé en un matériau réfractaire du type de ceux classiquement utilisés pour composer les petites faces, à base de silice ou d'alumine. Notons que la figure 2 n'est qu'une représentation schématique, sur laquelle le rapport des dimensions des diverses parties n'est pas respecté, afin de rendre la figure plus claire. Il faut savoir que dans la réalité, les cylindres 1, 1′ ont un diamètre de plusieurs dizaines de cm au moins, alors que la distance minimale entre leurs surfaces latérales 2, 2′, au niveau du col 11 définissant l'épaisseur du produit, est de l'ordre de quelques mm (par exemple 5 à 10 mm). Quant à la petite face 5, sa hauteur doit être suffisante pour autoriser une profondeur de quelques dizaines de cm pour le puits de métal liquide en lingotière. Dans la réalité, le coeur 10 en réfractaire représente donc une proportion de la surface totale de la petite face sensiblement plus importante que ce que montre la figure 2.This ceramic part, which is made of a material such as Syalon® boron nitride, silicon nitride, aluminum nitride, zirconia, chromium carbide does not constitute in the example described, as l said, that the periphery of the small face. It is generally not desirable to make the entire small ceramic face, because its cost would be too high, and above all its insulating properties would be insufficient, which would cause excessive solidification of the steel on their surface. This is why the
De manière connue, les machines de coulée de produits métalliques entre cylindres incorporent parfois à chacune des petites faces une pièce appelée "patin" qui obture l'espace de coulée dans la zone située juste au-dessus et juste au-dessous du col. Le patin a pour particularité d'être réalisé en un matériau sensiblement plus résistant aux sollicitations mécaniques et à l'abrasion que le reste de la petite face, par exemple en un matériau métallique, car il est en contact avec du métal majoritairement ou totalement solidifié qui peut exercer sur lui un effort de laminage. Pour atténuer cet effort, il est également connu de monter le patin sur un support élastique autorisant un certain retrait de sa part.In known manner, machines for casting metal products between cylinders sometimes incorporate on each of the small faces a part called a "pad" which closes the casting space in the area located just above and just below the neck. The pad has the particularity of being made of a material substantially more resistant to mechanical stresses and abrasion than the rest of the small face, for example a metallic material, because it is in contact with metal mainly or completely solidified which can exert a rolling effort on it. To reduce this effort, it is also known to mount the pad on an elastic support allowing a some withdrawal from him.
La petite face selon l'invention peut, elle aussi, comporter un patin 12 réalisé en céramique, visible sur les figures 2 et 4. S'il est monté de façon élastique grâce à un dispositif symbolisé par le ressort 14, il est avantageux que la partie de la petite face sur laquelle il doit frotter soit aussi en céramique: on a ainsi un contact céramique ― céramique 13 présentant une bonne résistance à l'usure et dont l'étanchéité peut demeurer satisfaisante durant toute l'utilisation de la petite face. Si on ne souhaite pas que le patin présente d'élasticité, la solution le plus simple est bien sûr de l'incorporer de construction à la petite face.The small face according to the invention may also include a
Les petites faces peuvent être enserrées dans un support 15 (non représenté sur la figure 2) comportant des organes non représentés permettant le placage des petites faces contre les cylindres. Alternativement, les parties en céramique et en réfractaire peuvent être des dépôts effectués sur une plaque, par exemple métallique. Dans ce cas, la zircone est particulièrement adaptée à cet usage pour les parties en céramique, en raison de la facilité avec laquelle on peut la faire adhérer à un support métallique.The small faces can be enclosed in a support 15 (not shown in FIG. 2) comprising members (not shown) enabling the small faces to be placed against the cylinders. Alternatively, the ceramic and refractory parts can be deposits made on a plate, for example metallic. In this case, zirconia is particularly suitable for this use for ceramic parts, because of the ease with which it can be adhered to a metal support.
Pour apporter une diminution supplémentaire de l'usure des petites faces à leur contact avec les cylindres, il est également possible de réaliser un dépôt de céramique sur les surfaces d'appui coniques 4a, 4b, 4′a des cylindres. On peut également assurer une lubrification de ce contact, par exemple en y déposant de façon continue ou discontinue de la poudre de nitrure de bore, ou tout autre matériau pulvérulent ou liquide pouvant jouer un rôle équivalent.To provide an additional reduction in the wear of the small faces in contact with the cylinders, it is also possible to deposit ceramic on the conical bearing
Bien entendu, l'invention n'est pas limitée à l'exemple qui vient d'être décrit et représenté. En particulier, les petites faces peuvent comporter de façon connue dans leur partie centrale un élément pénétrant à l'intérieur de l'espace de coulée, appelé "insert", pouvant être en réfractaire classique, en céramique, ou en tout autre matériau, et permettant d'améliorer les conditions de solidification du produit. De même, les cylindres peuvent comporter, sur leur surface latérale, à chacune des extrémités de leur partie cylindrique, une gravure en creux destinée à favoriser l'accrochage de la peau solidifiée du produit sur le cylindre. Toutefois, si cette gravure est placée à l'extrême limite de la partie cylindrique et affleure la zone de contact entre le cylindre et la petite face, il est à craindre qu'elle ne favorise les infiltrations de métal liquide. Pour cela, il est préférable de placer ces gravures quelques millimètres en retrait de ladite zone de contact.Of course, the invention is not limited to the example which has just been described and shown. In particular, the small faces may comprise, in a known manner in their central part, an element penetrating inside the casting space, called an "insert", which may be in conventional refractory, in ceramic, or in any other material, and making it possible to improve the solidification conditions of the product. Likewise, the cylinders may have, on their lateral surface, at each of the ends of their cylindrical part, a hollow etching intended to promote the attachment of the solidified skin of the product to the cylinder. However, if this engraving is placed at the extreme limit of the cylindrical part and is flush with the contact zone between the cylinder and the small face, it is to be feared that it favors the infiltration of liquid metal. For this, it is preferable to place these engravings a few millimeters back from said contact area.
Enfin, au lieu de présenter des faces frontales à section réduite par rapport à la section médiane comme on vient de le décrire et de le représenter, les cylindres peuvent, au contraire, avoir des faces extérieures de section plus importante que la section médiane. La géométrie de la périphérie des petites faces doit alors être modifiée en conséquence par rapport à la configuration décrite précédemment: sa partie frontale a une forme évasée au lieu de rétrécie. Le contact entre les cylindres et les petites faces est cette fois réalisé au moyen d'une traction exercée sur les supports des petites faces, et non plus d'une pression. La figure 5 représente une telle configuration, les différents éléments de l'installation étant désignés par les mêmes symboles que précédemment.Finally, instead of having front faces of reduced section with respect to the middle section as just described and shown, the cylinders can, on the contrary, have external faces of larger section than the middle section. The geometry of the periphery of the small faces must then be modified accordingly compared to the configuration described above: its front part has a flared shape instead of narrowed. The contact between the cylinders and the small faces is this time made by means of a traction exerted on the supports of the small faces, and no longer by a pressure. FIG. 5 represents such a configuration, the various elements of the installation being designated by the same symbols as above.
Claims (7)
Applications Claiming Priority (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| FR8916320A FR2655577B1 (en) | 1989-12-07 | 1989-12-07 | CONTINUOUS CASTING INSTALLATION OF THIN METAL PRODUCTS BETWEEN TWO CYLINDERS. |
| FR8916320 | 1989-12-07 |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| EP0432073A1 true EP0432073A1 (en) | 1991-06-12 |
Family
ID=9388340
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| EP90470063A Ceased EP0432073A1 (en) | 1989-12-07 | 1990-11-21 | Device for continuous casting thin metallic products between two rolls |
Country Status (18)
| Country | Link |
|---|---|
| US (1) | US5058658A (en) |
| EP (1) | EP0432073A1 (en) |
| JP (1) | JPH04111950A (en) |
| KR (1) | KR910011362A (en) |
| CN (1) | CN1052268A (en) |
| AU (1) | AU633660B2 (en) |
| BR (1) | BR9006195A (en) |
| CA (1) | CA2031709A1 (en) |
| CS (1) | CS599590A2 (en) |
| FI (1) | FI905942A (en) |
| FR (1) | FR2655577B1 (en) |
| HU (1) | HU206286B (en) |
| IE (1) | IE904213A1 (en) |
| NO (1) | NO905237L (en) |
| PL (1) | PL288144A1 (en) |
| PT (1) | PT96112A (en) |
| YU (1) | YU230290A (en) |
| ZA (1) | ZA909802B (en) |
Cited By (9)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| EP0552125A1 (en) * | 1992-01-17 | 1993-07-21 | USINOR SACILOR Société Anonyme | Twin roll type continuous casting machine with lateral refractory walls |
| FR2695580A1 (en) * | 1992-09-14 | 1994-03-18 | Usinor Sacilor | Continuous casting device between cylinders of thin metallic products. |
| FR2699436A1 (en) * | 1992-12-17 | 1994-06-24 | Usinor Sacilor | Device for the continuous casting of metal between rolls |
| WO1996000626A1 (en) * | 1994-06-30 | 1996-01-11 | Vesuvius France S.A. | Side wall for a continuous sheet metal casting machine |
| FR2723013A1 (en) * | 1994-08-01 | 1996-02-02 | Vesuvius France Sa | Side wall for a continuous sheet metal casting machine |
| FR2749785A1 (en) * | 1996-06-13 | 1997-12-19 | Usinor Sacilor | SIDE SHUTTER SIDE FOR CONTINUOUS CASTING INSTALLATION OF METAL STRIPS BETWEEN TWO CYLINDERS |
| FR2765504A1 (en) * | 1997-07-04 | 1999-01-08 | Usinor | SIDE SIDE FOR SEALING THE CASTING SPACE OF A CONTINUOUS CASTING INSTALLATION BETWEEN METAL THIN STRIP CYLINDERS |
| EP0901851A1 (en) * | 1997-09-12 | 1999-03-17 | Usinor | Side wall for confining the casting space in a continuous roll caster installation for the production of metallic strips and casting installation equipped therewith |
| EP1213273B2 (en) † | 2000-11-09 | 2009-10-07 | ESK Ceramics GmbH & Co.KG | Method of recycling side-dam plates for thin sheet casting of steel |
Families Citing this family (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| FR2666256B1 (en) * | 1990-09-03 | 1992-10-16 | Usinor Sacilor | CONTINUOUS CASTING INSTALLATION BETWEEN CYLINDERS. |
| DE69817336T2 (en) * | 1997-12-20 | 2004-06-24 | Pohang Iron & Steel Co. Ltd., Pohang City | DEVICE AND METHOD FOR LUBRICATING A SIDE DAM IN A DOUBLE-ROLLER CASTING PLANT |
| KR100431832B1 (en) * | 1999-08-26 | 2004-05-20 | 주식회사 포스코 | An Edge Dam For Twin Roll Type Strip Caster |
| FR2842130B1 (en) * | 2002-07-12 | 2004-10-15 | Usinor | SIDE SIDE FOR INSTALLATION OF CONTINUOUS CASTING OF METAL STRIPS BETWEEN TWO CYLINDERS |
| KR20170074301A (en) * | 2015-12-21 | 2017-06-30 | 주식회사 포스코 | Edge dam of twin roll type strip caster |
Citations (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| EP0212423A2 (en) * | 1985-08-05 | 1987-03-04 | Hitachi, Ltd. | Continuous casting apparatus of twin-drum type |
Family Cites Families (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2533601B2 (en) * | 1988-02-22 | 1996-09-11 | 株式会社日立製作所 | Twin roll type continuous casting machine |
-
1989
- 1989-12-07 FR FR8916320A patent/FR2655577B1/en not_active Expired - Fee Related
-
1990
- 1990-11-21 IE IE421390A patent/IE904213A1/en unknown
- 1990-11-21 EP EP90470063A patent/EP0432073A1/en not_active Ceased
- 1990-11-21 US US07/616,347 patent/US5058658A/en not_active Expired - Fee Related
- 1990-11-30 AU AU67630/90A patent/AU633660B2/en not_active Ceased
- 1990-12-03 CS CS905995A patent/CS599590A2/en unknown
- 1990-12-03 FI FI905942A patent/FI905942A/en not_active Application Discontinuation
- 1990-12-04 HU HU908052A patent/HU206286B/en not_active IP Right Cessation
- 1990-12-04 NO NO90905237A patent/NO905237L/en unknown
- 1990-12-05 YU YU230290A patent/YU230290A/en unknown
- 1990-12-06 CA CA002031709A patent/CA2031709A1/en not_active Abandoned
- 1990-12-06 KR KR1019900019987A patent/KR910011362A/en not_active Application Discontinuation
- 1990-12-06 CN CN90109724A patent/CN1052268A/en active Pending
- 1990-12-06 ZA ZA909802A patent/ZA909802B/en unknown
- 1990-12-06 PT PT96112A patent/PT96112A/en not_active Application Discontinuation
- 1990-12-06 BR BR909006195A patent/BR9006195A/en unknown
- 1990-12-07 JP JP2407408A patent/JPH04111950A/en not_active Withdrawn
- 1990-12-07 PL PL28814490A patent/PL288144A1/en unknown
Patent Citations (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| EP0212423A2 (en) * | 1985-08-05 | 1987-03-04 | Hitachi, Ltd. | Continuous casting apparatus of twin-drum type |
Non-Patent Citations (2)
| Title |
|---|
| PATENT ABSTRACTS OF JAPAN vol. 12, no. 495 (M-780)(3342), 23 décembre 1988; & JP - A - 63215343 (NISSHIN STEEL) 07.09.1988 * |
| PATENT ABSTRACTS OF JAPAN vol. 9, no. 264 (M-423)(1987), 22 octobre 1985; & JP - A - 60111743 (MITSUBISHI) 18.06.1985 * |
Cited By (15)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| EP0552125A1 (en) * | 1992-01-17 | 1993-07-21 | USINOR SACILOR Société Anonyme | Twin roll type continuous casting machine with lateral refractory walls |
| FR2695580A1 (en) * | 1992-09-14 | 1994-03-18 | Usinor Sacilor | Continuous casting device between cylinders of thin metallic products. |
| EP0588743A1 (en) * | 1992-09-14 | 1994-03-23 | USINOR SACILOR Société Anonyme | Installation for continuous casting of thin metallic products between rolls |
| FR2699436A1 (en) * | 1992-12-17 | 1994-06-24 | Usinor Sacilor | Device for the continuous casting of metal between rolls |
| WO1996000626A1 (en) * | 1994-06-30 | 1996-01-11 | Vesuvius France S.A. | Side wall for a continuous sheet metal casting machine |
| FR2723013A1 (en) * | 1994-08-01 | 1996-02-02 | Vesuvius France Sa | Side wall for a continuous sheet metal casting machine |
| FR2749785A1 (en) * | 1996-06-13 | 1997-12-19 | Usinor Sacilor | SIDE SHUTTER SIDE FOR CONTINUOUS CASTING INSTALLATION OF METAL STRIPS BETWEEN TWO CYLINDERS |
| FR2765504A1 (en) * | 1997-07-04 | 1999-01-08 | Usinor | SIDE SIDE FOR SEALING THE CASTING SPACE OF A CONTINUOUS CASTING INSTALLATION BETWEEN METAL THIN STRIP CYLINDERS |
| EP0894556A1 (en) * | 1997-07-04 | 1999-02-03 | Usinor | Side wall for a twin roll continuous casting machine for casting thin metal strip |
| US6082437A (en) * | 1997-07-04 | 2000-07-04 | Usinor | Side wall for closing off the casting space of a plant for the twin-roll continuous casting of thin metal strip |
| CN1074694C (en) * | 1997-07-04 | 2001-11-14 | 于西纳公司 | Side wall for closing off casting space of plant for twin-roll continuous casting of thin metal strip |
| EP0901851A1 (en) * | 1997-09-12 | 1999-03-17 | Usinor | Side wall for confining the casting space in a continuous roll caster installation for the production of metallic strips and casting installation equipped therewith |
| FR2768354A1 (en) * | 1997-09-12 | 1999-03-19 | Usinor | SIDE PANEL FOR SHUTTERING THE CASTING SPACE OF A CONTINUOUS CASTING INSTALLATION OF METAL STRIPS BETWEEN CYLINDERS, AND CASTING INSTALLATION THUS EQUIPPED |
| CN1074328C (en) * | 1997-09-12 | 2001-11-07 | 于西纳公司 | Side wall for closing off casting space of plant for twin-roll continuous casting of metal strip, and continuous caster equipped the side wall |
| EP1213273B2 (en) † | 2000-11-09 | 2009-10-07 | ESK Ceramics GmbH & Co.KG | Method of recycling side-dam plates for thin sheet casting of steel |
Also Published As
| Publication number | Publication date |
|---|---|
| US5058658A (en) | 1991-10-22 |
| ZA909802B (en) | 1992-07-29 |
| NO905237D0 (en) | 1990-12-04 |
| FI905942A (en) | 1991-06-08 |
| KR910011362A (en) | 1991-08-07 |
| IE904213A1 (en) | 1991-06-19 |
| BR9006195A (en) | 1991-09-24 |
| AU6763090A (en) | 1991-06-13 |
| AU633660B2 (en) | 1993-02-04 |
| CA2031709A1 (en) | 1991-06-08 |
| NO905237L (en) | 1991-06-10 |
| PL288144A1 (en) | 1991-12-02 |
| HUT56014A (en) | 1991-07-29 |
| CN1052268A (en) | 1991-06-19 |
| FI905942A0 (en) | 1990-12-03 |
| HU206286B (en) | 1992-10-28 |
| CS599590A2 (en) | 1991-09-15 |
| JPH04111950A (en) | 1992-04-13 |
| FR2655577B1 (en) | 1992-01-24 |
| YU230290A (en) | 1993-11-16 |
| HU908052D0 (en) | 1991-06-28 |
| PT96112A (en) | 1991-09-30 |
| FR2655577A1 (en) | 1991-06-14 |
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