EP0698433B1 - Twin roll casting machine with applied side walls - Google Patents
Twin roll casting machine with applied side walls Download PDFInfo
- Publication number
- EP0698433B1 EP0698433B1 EP95401560A EP95401560A EP0698433B1 EP 0698433 B1 EP0698433 B1 EP 0698433B1 EP 95401560 A EP95401560 A EP 95401560A EP 95401560 A EP95401560 A EP 95401560A EP 0698433 B1 EP0698433 B1 EP 0698433B1
- Authority
- EP
- European Patent Office
- Prior art keywords
- plate
- thrust
- wall
- rolls
- cylinders
- 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.)
- Expired - Lifetime
Links
- 238000005266 casting Methods 0.000 title description 20
- 239000002184 metal Substances 0.000 claims abstract description 17
- 229910052751 metal Inorganic materials 0.000 claims abstract description 17
- 238000009749 continuous casting Methods 0.000 claims abstract description 6
- 238000006073 displacement reaction Methods 0.000 claims description 10
- 239000011819 refractory material Substances 0.000 claims description 10
- 238000009826 distribution Methods 0.000 claims description 9
- 230000001105 regulatory effect Effects 0.000 claims description 4
- 238000003825 pressing Methods 0.000 abstract description 3
- 238000007789 sealing Methods 0.000 description 14
- 238000007711 solidification Methods 0.000 description 9
- 230000008023 solidification Effects 0.000 description 9
- 230000008595 infiltration Effects 0.000 description 8
- 238000001764 infiltration Methods 0.000 description 8
- 238000009434 installation Methods 0.000 description 5
- BASFCYQUMIYNBI-UHFFFAOYSA-N platinum Chemical compound [Pt] BASFCYQUMIYNBI-UHFFFAOYSA-N 0.000 description 5
- 229910000831 Steel Inorganic materials 0.000 description 4
- 230000006835 compression Effects 0.000 description 4
- 238000007906 compression Methods 0.000 description 4
- 238000000034 method Methods 0.000 description 4
- 210000000056 organ Anatomy 0.000 description 4
- 230000003071 parasitic effect Effects 0.000 description 4
- 239000010959 steel Substances 0.000 description 4
- 229910001338 liquidmetal Inorganic materials 0.000 description 3
- 239000000463 material Substances 0.000 description 3
- 230000000694 effects Effects 0.000 description 2
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 description 2
- 229910001018 Cast iron Inorganic materials 0.000 description 1
- 208000018672 Dilatation Diseases 0.000 description 1
- 238000005299 abrasion Methods 0.000 description 1
- 239000004568 cement Substances 0.000 description 1
- 238000006243 chemical reaction Methods 0.000 description 1
- 238000001816 cooling Methods 0.000 description 1
- 230000002542 deteriorative effect Effects 0.000 description 1
- 210000005069 ears Anatomy 0.000 description 1
- 230000008030 elimination Effects 0.000 description 1
- 238000003379 elimination reaction Methods 0.000 description 1
- 238000010438 heat treatment Methods 0.000 description 1
- 230000002706 hydrostatic effect Effects 0.000 description 1
- 239000012212 insulator Substances 0.000 description 1
- 239000000314 lubricant Substances 0.000 description 1
- 238000005461 lubrication Methods 0.000 description 1
- 238000005259 measurement Methods 0.000 description 1
- 244000045947 parasite Species 0.000 description 1
- 230000005855 radiation Effects 0.000 description 1
- 230000001172 regenerating effect Effects 0.000 description 1
- 238000005096 rolling process Methods 0.000 description 1
- 238000000926 separation method Methods 0.000 description 1
- 230000002269 spontaneous effect Effects 0.000 description 1
- 230000002747 voluntary effect Effects 0.000 description 1
Images
Classifications
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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
- B22D11/04—Continuous casting of metals, i.e. casting in indefinite lengths into open-ended moulds
- B22D11/0405—Rotating moulds
-
- 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
-
- 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
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B27—WORKING OR PRESERVING WOOD OR SIMILAR MATERIAL; NAILING OR STAPLING MACHINES IN GENERAL
- B27J—MECHANICAL WORKING OF CANE, CORK, OR SIMILAR MATERIALS
- B27J1/00—Mechanical working of cane or the like
- B27J1/02—Braiding, e.g. basket-making
-
- D—TEXTILES; PAPER
- D04—BRAIDING; LACE-MAKING; KNITTING; TRIMMINGS; NON-WOVEN FABRICS
- D04C—BRAIDING OR MANUFACTURE OF LACE, INCLUDING BOBBIN-NET OR CARBONISED LACE; BRAIDING MACHINES; BRAID; LACE
- D04C1/00—Braid or lace, e.g. pillow-lace; Processes for the manufacture thereof
Definitions
- the present invention relates to continuous casting thin metal products, especially strips thin steel, using continuous casting technique between two cooled counter-rotating cylinders. She relates more particularly to the obturation walls lateral, applied against the front ends of the cylinders, to delimit the casting space defined between the cylinders, as well as their support means and of application against said front ends.
- the molten metal is spilled in the casting space, defined between the cylinders, is solidifies on contact with them, and is extracted towards the bottom, when rotated, in the form of a thin strip.
- the sealing walls side are pressed against the front ends cylinders.
- Such lateral closure walls are commonly made of refractory material, at less in their part brought into contact with the molten metal.
- JP-A-63026243 and JP-A-57009565 describe lateral obturation walls whose support means include a movable push plate in the axial direction of the cylinders and arranged perpendicular to this direction, a plate supporting the closing wall and carried by the plate of thrust and arranged opposite it, and thrust members interposed between said plate thrust and said plate, and being able to exert thereon pushing forces independently of each other.
- the thrust force transmitted by the plate is applied only on the sealing wall.
- Document EP-A-212423 teaches that these pushing bodies can be constituted by actuated jacks, for example regulated in pressure.
- a lubrication of the cylinder-wall interface shutter is usually provided, this is carried out by adding a consumable lubricant or by use, at this interface, of a material self-lubricating.
- the wall shutter can produce greater wear in certain areas of the interface, or in other areas of infiltration located between the edge of the cylinders and the wall shutter, which lead to locally create a game between cylinder and end wall.
- a infiltration between a cylinder and said wall goes tend, when solidifying, to spread the wall sealing the edge of this cylinder, and therefore also the edge of the second cylinder, since the wall then goes retreat as a whole, with the risk of deteriorating sealing at said second cylinder.
- the same problem can arise if the front walls cylinder ends are not perfectly orthogonal to the axes of the cylinders, and / or are not exactly in the same plane; in this case the wall shutter is properly applied against a cylinder but not against the other.
- the object of the present invention is to resolve these problems, and in particular aims to keep the best possible sealing, throughout the casting, between a shutter wall and the two cylinders against which it is applied.
- the plate is only supported by the plate thrust, that is to say that it is linked to it mechanically only in the vertical direction and possibly horizontally, perpendicular to cylinder axes.
- the plate can be move relative to the push plate on the one hand in the direction of the cylinder axes, and on the other hand by pivoting relative to it about an axis any located in the general plane of this plate, substantially orthogonal to said axial direction.
- the organs thrust located on the side where the closing wall deviates from the cylinder are more heavily stressed, and, in reaction, it is possible to act preferentially or only on these without significantly modifying the thrust on the side of the second cylinder.
- the pushing members can be jacks piloted or springs.
- the thrust members are cylinders, we can then control them individually either in pressure or in displacement, which allows apply a bigger push just where where such additional thrust is required, for example in the case indicated above, on the side where occurred parasitic solidification.
- the stiffness of each spring and the distribution of the springs in the said zone are determined so that, for the same arrow of these springs, the pushing force they exert in the lower part of the obturation wall is greater than the thrust force exerted in the upper part of the wall.
- the invention also makes it possible to be able to modulate during the casting the overall bearing force, by moving the said thrust plate 10 relative to the cylinders, while retaining the adaptability of the position of the wall shutter in relation to the edges of the cylinders.
- the push plate is carried by a carriage mobile 8 in said axial direction, and the device includes means for moving said carriage by compared to the cylinders and exert on it an effort directed towards the cylinders.
- springs 14 all undergo additional compression, which is added to that which they had before this displacement, but which retains a similar distribution of thrust on the surface of wall 3, while accentuating more strongly the effort in the areas where the springs were already making a greater effort.
- the position of the push plate can be initially set at start-up to compress the springs quite strongly, thus ensuring a kind of lapping of the obturation wall against cylinder edges; then the overall downforce can be reduced, in stabilized pouring regime, to especially avoid too rapid wear of the wall shutter, and increased in the event of an incident, by example of liquid metal infiltration, to restore the sealing as quickly as possible.
- This support assembly includes a rigid frame 5, which carries a first carriage, or carriage prepositioning 6, adjustable in position on the chassis 5, in the axial direction A of the cylinders, for example by a screw-nut system 7.
- the prepositioning carriage 6 carries a second carriage 8, guided in translation in the axial direction A.
- the position of the second carriage 8 is adjusted by a cylinder 9 for positioning and pushing.
- the second carriage 8 supports a push plate 10, by means of two support pins 11. Furthermore, the push plate 10 is held against supports 12 linked to the carriage 8 and adjustable in position, so known per se, to ensure the verticality of the plate thrust 10.
- the push plate 10 has a plurality of bores 13, distributed over a form area triangular corresponding to the shape of the wall shutter.
- a spring compression 14 supported by one end at the bottom of the bore, and by the other end on a piston 15 sliding in the bore and comprising means for retainer 16 to hold spring and piston in the bore.
- the push plate 10 also has at its upper part of the support blocks 17, 17 ', on which rest ears 18, 18 'of a cooled plate 19 internally and the rear face of which is in contact with pistons 15.
- One of the support blocks 17 has a rib 17B which engages with reduced play in a groove corresponding to the ear 18, to ensure the lateral positioning of the plate according to Ox (direction horizontal), while leaving it free to rotate according to Oz (vertical direction).
- the other 18 'ear rests simply on the support block 17 '.
- Means 20 of lateral stop of the lower end of the plate 19 relative to the support plate 10 are also provided to avoid tilting on the supports 17 and 17 '.
- a plate 21 of insulating refractory material is held against the front face of the plate 19, by a cooled metal belt 22 which surrounds it and which is suspended on the plate by a hook-shaped pin 23, which rests in a cradle 24 of said plate, with some freedom of movement in the direction axial Oy.
- the insulating refractory plate 21 can also move relative to the cooled belt 22, in the axial direction, and has a thickness slightly higher than that of said belt 22.
- a second metal belt 25 surrounding the closure wall 3 which is linked to it by a refractory cement and whose the thickness is also greater than that of the said second belt 25, so as to protrude therefrom side of the cylinders, to avoid contact between them and the belt 25, even after maximum wear allowed.
- the shapes and dimensions of the two plates refractories 3 and 21 and belts 22 and 25 are such that even when the second belt 25 is tightened on the cooled belt 22, the refractory plate insulator 21 is only in contact with the closure wall 3, and not with said second belt 25.
- the thickness of the plate in insulating refractory 21 is greater than that of the belt cooled, the thrust force transmitted by the plate 19 is retransmitted only to the wall closure 3, and not on the belt 25, which avoids create constraints between this belt and the material shutter wall refractory, and therefore risks of deformations thereof or its separation from the belt 25.
- connection with the insulating refractory plate 21 is not rigid, and the hook 23 also has a some freedom of movement in the cradle 24, in the axial direction.
- the plate 19 is made of steel, of same as the cooled belt 22, and the second belt 25 is made of a material which has good hot characteristics such as steel or cast iron, its natural cooling being assisted by contact with the belt 22 cooled by a internal circulation of water.
- the support assembly 4 is distant from the cylinders, the chassis 5 being for this purpose provided with means, known in self, not shown, to ensure its displacement relative to the structure of the installation of casting.
- a radiation preheating oven is then brought in front of the shutter wall to carry it at a high temperature, the insulating refractory 21, the cooled plate 19 and the cooled belt 22 limiting the heating of the rest of the device.
- the chassis 5 is brought back into position and clamped on the structure.
- the jack 9 is then controlled to bring the obturation wall in contact with the edges of the cylinders and continuing its movement, move the plate thrust 10, which has the effect of compressing the springs 14.
- the jack 9 is regulated in position.
- the effort he provides is transmitted to the push plate by the carriage 8 and its supports 12, and this effort is then distributed on the plate 19 by the springs; the efforts supplied locally by each of said springs 14 are so essentially a function of the compression of these and therefore the relative position of the plate and the push plate.
- the closure wall 3 is applied against the cylinders 1 in a position that ensures the best contact possible. Indeed, even if, for example, the songs of two cylinders are slightly warped or offset axially with respect to each other, the wall shutter is applied against the two cylinders, with minimal play.
- the efforts of thrust, on the side of the cylinder whose edge overflows by compared to each other, are higher, which will lead to faster wear on this side of the sealing wall 3, and therefore tend to bring its general plan parallel to that of the push plate 10, lead to a more homogeneous distribution of the efforts provided by springs 14, and obtain optimal contact for the seal between obturation wall 3 and cylinders l.
- the springs 14 will act so that the closing wall remains in contact with the cylinder located on this side.
- This displacement can be detected either by a displacement sensor, either by a reduction of the pushing force, resulting because the springs located on the said side are thus less tablets.
- the jack 9 can then be controlled to advance the thrust plate towards the cylinders, until the desired effort is restored application of the sealing wall against the edge of the cylinder on the side where wear has occurred. In doing so, the efforts on the other side are increased and therefore go lead to accelerated wear on this other side, which will result in bringing back the sealing wall parallel to the thrust plate, and therefore regain optimal sealing.
- the springs 14 not only allow absorb faults in the shutter wall contact - cylinder, but tend to provide correction automatic, spontaneous of these faults.
- the invention allows on the one hand to reduce this pushing force, and on the other hand to use the obturation wall only when a contact disturbance occurs.
- the device according to the invention makes it possible to adjust the force of the shutter wall against the edge of the cylinders, in particular according to each stage of the casting, by a simple control of the jack 9.
- the springs can be replaced by piloted jacks which will perform the same functions as the springs, from the measurement of their internal pressure, and of the position of the closure wall.
- a synchronization regulation of the wear of the closure wall, acting on all cylinders can be combined with regulation individual, for example by defining one of the cylinders as a pilot and enslaving others on the cylinder pilot.
- cylinder pilot the one located towards the bottom of the obturation wall, that is to say near the neck between the cylinders, where the wear on the sealing wall is generally more accentuated.
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- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Manufacturing & Machinery (AREA)
- Textile Engineering (AREA)
- Life Sciences & Earth Sciences (AREA)
- Forests & Forestry (AREA)
- Continuous Casting (AREA)
- Rolls And Other Rotary Bodies (AREA)
- Moulding By Coating Moulds (AREA)
- Manufacture Of Alloys Or Alloy Compounds (AREA)
- Casting Support Devices, Ladles, And Melt Control Thereby (AREA)
- Body Structure For Vehicles (AREA)
- Braking Arrangements (AREA)
- Rollers For Roller Conveyors For Transfer (AREA)
- Bending Of Plates, Rods, And Pipes (AREA)
Abstract
Description
La présente invention concerne la coulée continue de produits métalliques minces, notamment de bandes minces en acier, selon la technique de coulée continue entre deux cylindres contra-rotatifs refroidis. Elle concerne plus particulièrement les parois d'obturation latérale, appliquées contre les extrémités frontales des cylindres, pour délimiter l'espace de coulée défini entre les cylindres, ainsi que leurs moyens de support et d'application contre les dites extrémités frontales.The present invention relates to continuous casting thin metal products, especially strips thin steel, using continuous casting technique between two cooled counter-rotating cylinders. She relates more particularly to the obturation walls lateral, applied against the front ends of the cylinders, to delimit the casting space defined between the cylinders, as well as their support means and of application against said front ends.
Il est connu que les installations de coulée continue entre cylindres comportent deux cylindres d'axes horizontaux et parallèles, vigoureusement refroidis intérieurement par circulation d'eau, entraínés en rotation de sens inverse, et espacés l'un de l'autre d'une distance correspondant à l'épaisseur souhaitée du produit coulé.It is known that casting installations continuous between cylinders have two axis cylinders horizontally and parallel, vigorously cooled internally by circulation of water, driven in opposite rotation, and spaced from each other a distance corresponding to the desired thickness of the cast product.
Lors de la coulée, le métal en fusion est déversé dans l'espace de coulée, défini entre les cylindres, se solidifie au contact de ceux-ci, et est extrait vers le bas, lors de leur rotation, sous forme d'une bande mince. Pour contenir le métal en fusion, les parois d'obturation latérale sont plaquées contre les extrémités frontales des cylindres. De telles parois d'obturation latérale sont couramment réalisées en matériau réfractaire, au moins dans leur partie amenée à être en contact avec le métal en fusion.During casting, the molten metal is spilled in the casting space, defined between the cylinders, is solidifies on contact with them, and is extracted towards the bottom, when rotated, in the form of a thin strip. To contain the molten metal, the sealing walls side are pressed against the front ends cylinders. Such lateral closure walls are commonly made of refractory material, at less in their part brought into contact with the molten metal.
Les documents JP-A-63026243 et JP-A-57009565 décrivent des parois d'obturation latérale dont les moyens de support comportent une plaque de poussée mobile selon la direction axiale des cylindres et disposée perpendiculairement à cette direction, une platine supportant la paroi d'obturation et portée par la plaque de poussée et disposée en face de celle-ci, et des organes de poussée interposés entre ladite plaque de poussée et ladite platine, et pouvant exercer sur celle-ci des efforts de poussée indépendamment l'un de l'autre. L'effort de poussée transmis par la platine est appliqué uniquement sur la paroi d'obturation. Le document EP-A-212423 enseigne que ces organes de poussée peuvent être constitués par des vérins pilotés, par exemple régulés en pression.JP-A-63026243 and JP-A-57009565 describe lateral obturation walls whose support means include a movable push plate in the axial direction of the cylinders and arranged perpendicular to this direction, a plate supporting the closing wall and carried by the plate of thrust and arranged opposite it, and thrust members interposed between said plate thrust and said plate, and being able to exert thereon pushing forces independently of each other. The thrust force transmitted by the plate is applied only on the sealing wall. Document EP-A-212423 teaches that these pushing bodies can be constituted by actuated jacks, for example regulated in pressure.
Il est donc nécessaire d'assurer l'étanchéité entre les cylindres et les parois d'obturation latérales. Pour cela, ces parois d'obturation sont pressées contre les extrémités des cylindres. Pour réduire le frottement induit lors de la rotation des cylindres, une lubrification de l'interface cylindre - paroi d'obturation est habituellement prévue, celle-ci s'effectue par apport d'un lubrifiant consommable ou par utilisation, au niveau de cet interface, d'un matériau autolubrifiant.It is therefore necessary to seal between the cylinders and the lateral closure walls. For this, these shutter walls are pressed against ends of cylinders. To reduce friction induced during the rotation of the cylinders, a lubrication of the cylinder-wall interface shutter is usually provided, this is carried out by adding a consumable lubricant or by use, at this interface, of a material self-lubricating.
Cependant, la réalisation effective de cette étanchéité et sa conservation tout au long de la coulée présente encore de nombreuses difficultés, dues notamment :
- aux déformations géométriques des cylindres et des parois d'obturation, en particulier en début de coulée, provoquées par les dilatations des divers éléments de l'installation,
- aux efforts exercés sur ces éléments, notamment les efforts exercés sur les parois d'obturation, dans la direction des axes des cylindres, par le métal coulé, et qui tendent à écarter les dites parois d'obturation des cylindres,
- à l'usure des parois d'obturation, ou des chants des parois refroidis des cylindres, qui n'est pas toujours régulière sur toute la surface des zones en contact,
- aux éventuelles amorces d'infiltration de métal coulé entre paroi d'obturation et cylindre, et de solidification de ces infiltrations, qui tendent à les écarter l'une de l'autre.
- to the geometric deformations of the cylinders and of the closure walls, in particular at the start of casting, caused by the expansions of the various elements of the installation,
- the forces exerted on these elements, in particular the forces exerted on the closure walls, in the direction of the axes of the cylinders, by the cast metal, and which tend to separate said closure walls of the cylinders,
- the wear of the sealing walls, or the edges of the cooled walls of the cylinders, which is not always regular over the entire surface of the areas in contact,
- to possible primers for the infiltration of metal poured between the closure wall and the cylinder, and for the solidification of these infiltrations, which tend to separate them from one another.
Il a déjà été proposé de résoudre ces problèmes en provoquant une usure contrôlée de la paroi d'obturation, par frottement des cylindres contre celle-ci, et ceci tout au long de la coulée. Ainsi, on vise à régénérer en permanence l'interface paroi d'obturation - cylindre, de manière à uniformiser au mieux les conditions de contact sur toute la surface de cette interface. Ainsi, le document EP-A-546 206 décrit une méthode selon laquelle, avant le début de la coulée, on presse fortement les parois d'obturation contre les cylindres, pour effectuer en quelque sorte un rodage de celle-ci par abrasion par les chants des cylindres, puis on réduit cette pression et, en cours de coulée, on continue à déplacer les parois d'obturation vers les cylindres à une vitesse prédéterminée pour assurer continuellement la poursuite de l'usure volontaire et tenter ainsi de conserver un contact régulier sur toute la surface des interfaces.It has already been proposed to solve these problems by causing controlled wear of the closure wall, by friction of the cylinders against it, and this throughout the casting. So, we aim to regenerate by permanently the shutter wall - cylinder interface, so as to standardize the contact conditions as well as possible over the entire surface of this interface. So the document EP-A-546 206 describes a method according to which, before the start of the casting, we strongly press the shutter walls against the cylinders, to perform sort of a running-in of it by abrasion by the edges of the cylinders, then we reduce this pressure and, during casting, we continue to move the walls shutter to the cylinders at a speed predetermined to ensure continuation of voluntary usury and thus try to keep a regular contact over the entire surface of the interfaces.
Mais cette méthode conduit à une usure importante du matériau réfractaire des parois d'obturation, même lorsque les conditions du contact sont satisfaisantes.But this method leads to significant wear refractory material from the end walls, even when the conditions of contact are satisfactory.
Si, au lieu de régénérer l'interface comme indiqué ci-dessus, on se contente d'appliquer la paroi d'obturation avec un effort prédéterminé, il peut se produire une usure plus forte dans certaines zones de l'interface, ou dans d'autres zones des infiltrations localisées entre le chant des cylindres et la paroi d'obturation, qui conduisent à créer localement un jeu entre cylindre et paroi d'obturation. Par exemple, une infiltration entre un cylindre et la dite paroi va tendre, en se solidifiant, à écarter la paroi d'obturation du chant de ce cylindre, et donc également du chant du deuxième cylindre, puisque la paroi va alors reculer dans son ensemble, avec le risque de détériorer l'étanchéité au niveau du dit deuxième cylindre. Le même problème peut survenir si les parois frontales d'extrémités des cylindres ne sont pas parfaitement orthogonales aux axes des cylindres, et/ou ne sont pas exactement dans le même plan ; dans ce cas, la paroi d'obturation est correctement appliquée contre un cylindre mais pas contre l'autre.If, instead of regenerating the interface as indicated above, we just apply the wall shutter with a predetermined effort, it can produce greater wear in certain areas of the interface, or in other areas of infiltration located between the edge of the cylinders and the wall shutter, which lead to locally create a game between cylinder and end wall. For example, a infiltration between a cylinder and said wall goes tend, when solidifying, to spread the wall sealing the edge of this cylinder, and therefore also the edge of the second cylinder, since the wall then goes retreat as a whole, with the risk of deteriorating sealing at said second cylinder. The same problem can arise if the front walls cylinder ends are not perfectly orthogonal to the axes of the cylinders, and / or are not exactly in the same plane; in this case the wall shutter is properly applied against a cylinder but not against the other.
La présente invention a pour but de résoudre ces problèmes, et vise en particulier à garder la meilleure étanchéité possible, pendant toute la coulée, entre une paroi d'obturation et les deux cylindres contre lesquels elle est appliquée.The object of the present invention is to resolve these problems, and in particular aims to keep the best possible sealing, throughout the casting, between a shutter wall and the two cylinders against which it is applied.
Avec ces objectifs en vue, l'invention a pour objet un dispositif de coulée continue entre cylindres de produits métalliques minces, comportant deux cylindres contrarotatifs refroidis, deux parois d'obturation latérale et des moyens de support et d'application en pression des dites parois d'obturation contre les chants des cylindres, les dits moyens de support comportant :
- une plaque de poussée mobile selon la direction axiale des cylindres et disposée perpendiculairement à cette direction,
- une platine, qui supporte la paroi d'obturation et qui est portée par la plaque de poussée et disposée en face de celle-ci,
- au moins trois organes de poussée interposés entre la dite plaque de poussée et la dite platine, ces organes étant répartis sur une zone de forme correspondant à celle de la paroi d'obturation, et pouvant exercer sur celle-ci des efforts de poussée indépendamment l'un de l'autre, la platine étant conformée de manière que l'effort de poussée qu'elle transmet soit appliqué uniquement sur la dite paroi, caractérisé en ce que, la paroi d'obturation étant constituée d'une plaque en matériau réfractaire dur entourée d'une ceinture métallique à laquelle elle est liée, la dite ceinture métallique est fixée sur une ceinture refroidie entourant une plaque en matériau réfractaire thermiquement isolant, avec une liberté de déplacement de cette dernière par rapport à la dite ceinture refroidie dans la direction axiale des cylindres, la ceinture refroidie étant supportée sur la dite platine, et la plaque en réfractaire isolant étant conformée de manière que l'effort de poussée transmis par la platine à la dite plaque soit retransmis par celle-ci uniquement à la dite plaque en matériau réfractaire dur.
- a thrust plate movable in the axial direction of the cylinders and arranged perpendicular to this direction,
- a plate, which supports the closure wall and which is carried by the thrust plate and disposed opposite it,
- at least three thrust members interposed between said thrust plate and said plate, these members being distributed over a region of shape corresponding to that of the closure wall, and being able to exert on it thrust forces independently l '' of one another, the plate being shaped so that the thrust force which it transmits is applied only to said wall, characterized in that, the closure wall consisting of a plate of refractory material hard surrounded by a metal belt to which it is linked, the said metal belt is fixed on a cooled belt surrounding a plate of heat-insulating refractory material, with a freedom of movement of the latter relative to the said cooled belt in the direction axial of the cylinders, the cooled belt being supported on said plate, and the insulating refractory plate being shaped so that the eff thrust ort transmitted by the plate to said plate is retransmitted by the latter only to said plate made of hard refractory material.
La platine est uniquement supportée par la plaque de poussée, c'est-à-dire qu'elle lui est liée mécaniquement uniquement dans la direction verticale et éventuellement horizontalement, perpendiculairement aux axes des cylindres. Par contre, la platine peut se déplacer par rapport à la plaque de poussée d'une part dans la direction des axes des cylindres, et d'autre part en pivotant par rapport à celle-ci autour d'un axe quelconque situé dans le plan général de cette platine, sensiblement orthogonal à la dite direction axiale.The plate is only supported by the plate thrust, that is to say that it is linked to it mechanically only in the vertical direction and possibly horizontally, perpendicular to cylinder axes. On the other hand, the plate can be move relative to the push plate on the one hand in the direction of the cylinder axes, and on the other hand by pivoting relative to it about an axis any located in the general plane of this plate, substantially orthogonal to said axial direction.
Ces différents déplacements autorisés sont bien sûr limités en amplitude, mais suffisants pour permettre à la paroi d'obturation de s'appliquer le mieux possible contre les chants des cylindres, même si les chants respectifs des cylindres ne sont pas parfaitement coplanaires. De plus, lorsque la paroi d'obturation est amenée en cours de coulée à s'éloigner du chant d'un cylindre, par exemple suite au passage d'une solidification parasite du métal coulé entre ce cylindre et la paroi d'obturation, cette dernière peut légèrement pivoter sur elle-même et donc garder le meilleur contact possible avec le deuxième cylindre, alors que sans cette liberté de mouvement, une telle solidification parasite conduirait à repousser la paroi dans son ensemble et à créer un jeu entre celle-ci et le deuxième cylindre. These different authorized movements are of course limited in amplitude, but sufficient to allow the shutter wall to apply as best as possible against the edges of the cylinders, even if the edges respective cylinders are not perfectly coplanar. In addition, when the closure wall is caused during casting to move away from the song of a cylinder, for example following the passage of a parasitic solidification of the metal poured between this cylinder and the shutter wall, the latter may slightly rotate on itself and therefore keep the best contact possible with the second cylinder, while without this freedom of movement, such parasitic solidification would push back the wall as a whole and create a clearance between it and the second cylinder.
Par ailleurs, lors d'un tel pivotement, les organes de poussée situés du côté où la paroi d'obturation s'écarte du cylindre sont plus fortement sollicités, et, en réaction, il est possible d'agir préférentiellement ou uniquement sur ceux-ci sans modifier sensiblement la poussée du côté du deuxième cylindre.Furthermore, during such a pivoting, the organs thrust located on the side where the closing wall deviates from the cylinder are more heavily stressed, and, in reaction, it is possible to act preferentially or only on these without significantly modifying the thrust on the side of the second cylinder.
Les organes de poussée peuvent être des vérins pilotés ou des ressorts.The pushing members can be jacks piloted or springs.
Dans le cas où les organes de poussée sont des vérins, on peut alors les piloter individuellement soit en pression soit en déplacement, ce qui permet d'appliquer une poussée plus importante juste à l'endroit où un tel surcroit de poussée est requis, par exemple dans le cas indiqué ci-dessus, du côté où s'est produit une solidification parasite.In the case where the thrust members are cylinders, we can then control them individually either in pressure or in displacement, which allows apply a bigger push just where where such additional thrust is required, for example in the case indicated above, on the side where occurred parasitic solidification.
Dans le cas où les organes de poussée sont des ressorts, ce surcroit de poussée est en fait généré automatiquement par la compression des ressorts, du côté où la paroi d'obturation est écarté des cylindres, et donc par l'augmentation de la force exercée par les ressorts comprimés, dans la mesure où la position de la plaque de poussée est fixe.In the case where the thrust members are springs, this additional thrust is actually generated automatically by compression of the springs, on the side where the closure wall is spaced from the cylinders, and therefore by the increase in the force exerted by the compressed springs, since the position of the push plate is fixed.
Préférentiellement, la raideur de chaque ressort et la répartition des ressorts dans la dite zone sont déterminées de manière que, pour une même flèche de ces ressorts, l'effort de poussée qu'ils exercent dans la partie basse de la paroi d'obturation soit supérieur à l'effort de poussée exercé dans la partie haute de la paroi. Cette disposition permet de tenir compte du fait que la pression exercée sur la paroi d'obturation par le métal coulé est plus forte en bas de cette paroi que vers le haut, d'une part à cause de la pression hydrostatique du métal liquide, d'autre part à cause de l'effet de laminage exercé par les cylindres sur le métal en cours de solidification, à proximité du col entre les cylindres, qui tend à élargir la bande coulée et donc à repousser le bas de la paroi d'obturation. Pour obtenir cette répartition particulière de l'effort de poussée, on peut jouer soit sur la raideur des ressorts, soit sur le positionnement et la répartition des ressorts dans le plan de la plaque de poussée, ce qui est plus facilement réalisable lorsque le nombre de ressort est suffisamment grand, soit sur ces deux paramètres à la fois.Preferably, the stiffness of each spring and the distribution of the springs in the said zone are determined so that, for the same arrow of these springs, the pushing force they exert in the lower part of the obturation wall is greater than the thrust force exerted in the upper part of the wall. This provision allows for the fact that that the pressure exerted on the sealing wall by the cast metal is stronger at the bottom of this wall than towards the top, on the one hand because of the hydrostatic pressure liquid metal, on the other hand because of the effect of rolling by the cylinders on the current metal solidification, near the neck between the cylinders, which tends to widen the casting strip and therefore to push back the bottom of the cover wall. To get this particular distribution of the pushing force, we can play either on the stiffness of the springs, or on the positioning and distribution of springs in the plane of the thrust plate, which is more easily achievable when the number of springs is sufficient great, either on these two parameters at the same time.
Dans le cas de l'utilisation de vérins, le choix de l'emplacement de ceux-ci tiendra également compte de la répartition souhaitée des efforts d'application de la paroi d'obturation sur les cylindres. Ce choix est cependant moins contraignant, puisque cette répartition des efforts pourra être réalisée par un pilotage en pression adéquat des vérins.In the case of the use of cylinders, the choice of the location of these will also take into account the desired distribution of enforcement efforts sealing wall on the cylinders. This choice is however less restrictive, since this distribution efforts can be made by piloting adequate cylinder pressure.
Outre l'avantage déjà indiqué de pouvoir répartir
selon une configuration prédéterminée la poussée exercée
sur la paroi d'obturation 3 et de ne pas reculer la
totalité de la paroi en cas de solidification parasite,
l'invention permet aussi de pouvoir moduler pendant la
coulée la force d'appui globale, en déplaçant la dite
plaque de poussée 10 par rapport aux cylindres, tout en
conservant l'adaptabilité de la position de la paroi
d'obturation par rapport aux chants des cylindres. A
cette fin, la plaque de poussée est portée par un chariot
mobile 8 dans la dite direction axiale, et le dispositif
comporte des moyens pour déplacer le dit chariot par
rapport aux cylindres et exercer sur celui-ci un effort
dirigé vers les cylindres. Par exemple, en déplaçant la
plaque de poussée vers les cylindres, les ressorts 14
subissent tous une compression complémentaire, qui
s'ajoute à celle qu'ils possédaient avant ce déplacement,
mais qui conserve une répartition similaire de la poussée
sur la surface de la paroi 3, tout en accentuant plus
fortement l'effort dans les zones où les ressorts
fournissaient déjà un effort plus grand. Ainsi, par
exemple, la position de la plaque de poussée peut être
réglée initialement, au moment du démarrage, pour
comprimer assez fortement les ressorts, et ainsi assurer
une sorte de rodage de la paroi d'obturation contre les
chants des cylindres ; puis la force d'appui globale peut
être réduite, en régime de coulée stabilisé, pour
notamment éviter une usure trop rapide de la paroi
d'obturation, et réaugmentée en cas d'incident, par
exemple d'infiltration de métal liquide, pour rétablir le
plus vite possible l'étanchéité.In addition to the advantage already indicated of being able to distribute
according to a predetermined configuration the thrust exerted
on the
D'autres caractéristiques et avantages apparaítront dans la description qui va être faite d'un dispositif de coulée continue entre cylindres de bandes minces en acier.Other characteristics and advantages will appear in the description which will be made of a device for continuous casting between cylinders of thin strips in steel.
On se reportera aux dessins annexés dans lesquels :
- la figure l est une vue en coupe de l'ensemble de support de la paroi d'obturation latérale, dans le cas où les organes de poussée sont des ressorts,
- la figure 2 est une vue en coupe selon la ligne II - II de la figure 1, montrant la répartition des ressorts dans le plan de la paroi de poussée.
- la figure 3 est une vue partielle agrandie de la figure 2.
- FIG. 1 is a sectional view of the support assembly for the lateral closure wall, in the case where the thrust members are springs,
- Figure 2 is a sectional view along line II - II of Figure 1, showing the distribution of the springs in the plane of the thrust wall.
- FIG. 3 is a partial enlarged view of FIG. 2.
Sur les figures, les mêmes éléments sont désignés par des références identiques.In the figures, the same elements are designated by identical references.
Sur le dessin de la figure 1, on n'a représenté que
l'un des cylindres l de l'installation de coulée, contre
le chant 2 duquel est poussée la paroi d'obturation 3,
portée par un ensemble de support 4.In the drawing of Figure 1, only
one of the cylinders l of the casting installation, against
the
Cet ensemble de support comprend un châssis rigide
5, qui porte un premier chariot, ou chariot de
prépositionement 6, réglable en position sur le châssis
5, dans la direction axiale A des cylindres, par exemple
par un système vis-écrou 7.This support assembly includes a
Le chariot de prépositionnement 6 porte un second
chariot 8, guidé en translation dans la direction axiale
A. Le réglage en position du second chariot 8 est assuré
par un vérin 9 de positionnement et de poussée.The prepositioning
Le second chariot 8 supporte une plaque de poussée
10, au moyen de deux axes de support 11. Par ailleurs, la
plaque de poussée 10 est maintenue contre des appuis 12
liés au chariot 8 et réglables en position, de manière
connue en soi, pour assurer la verticalité de la plaque
de poussée 10.The
La plaque de poussée 10 comporte une pluralité
d'alésages 13, répartis sur une zone de forme
triangulaire correspondant à la forme de la paroi
d'obturation. Dans chaque alésage 13 est placé un ressort
de compression 14 en appui par une extrémité au fond de
l'alésage, et par l'autre extrémité sur un piston 15
coulissant dans l'alésage et comportant des moyens de
retenue 16 pour maintenir ressort et piston dans
l'alésage.The
La plaque de poussée 10 comporte également à sa
partie supérieure des blocs d'appui 17, 17', sur lesquels
reposent des oreilles 18, 18' d'une platine 19 refroidie
intérieurement et dont la face arrière est en contact
avec les pistons 15.The
L'un des blocs d'appui 17 comporte une nervure 17B
qui s'engage avec un jeu réduit dans une rainure
correspondante de l'oreille 18, pour assurer le
positionnement latéral de la platine selon Ox (direction
horizontale), tout en la laissant libre en rotation selon
Oz (direction verticale). L'autre oreille 18' repose
simplement sur le bloc d'appui 17'. En somme, les plans
17A et 17'A formant sur les blocs d'appui 17 et 17', les
surfaces porteuses, fixent l'altitude selon Oz de la
paroi d'obturation, la nervure 17B fixe la position selon
Ox et la direction selon Oy est libre. Des moyens 20 de
butée latérale de l'extrémité inférieure de la platine 19
par rapport à la plaque d'appui 10 sont également prévus
pour éviter un basculement sur les appuis 17 et 17'. One of the support blocks 17 has a rib 17B
which engages with reduced play in a groove
corresponding to the
Une plaque 21 en matériau réfractaire isolant est
maintenue contre la face avant de la platine 19, par une
ceinture métallique refroidie 22 qui l'entoure et qui est
suspendue sur la platine par un axe en forme de crochet
23, qui repose dans un berceau 24 de la dite platine,
avec une certaine liberté de mouvement dans la direction
axiale Oy. La plaque en réfractaire isolant 21 peut
également se déplacer par rapport à la ceinture refroidie
22, dans la direction axiale, et a une épaisseur
légèrement supérieure à celle de la dite ceinture 22.A
Sur la ceinture refroidie est vissée une seconde
ceinture 25 métallique, entourant la paroi d'obturation 3
qui lui est liée par un ciment réfractaire et dont
l'épaisseur est également supérieure à celle de la dite
seconde ceinture 25, de manière à dépasser de celle-ci du
côté des cylindres, pour éviter un contact entre ceux-ci
et la ceinture 25, même après une usure maximale admise.On the cooled belt is screwed a
Les formes et dimensions des deux plaques
réfractaires 3 et 21 et des ceintures 22 et 25 sont
telles que même lorsque la seconde ceinture 25 est serrée
sur la ceinture refroidie 22, la plaque en réfractaire
isolant 21 n'est en contact qu'avec la paroi d'obturation
3, et non avec la dite deuxième ceinture 25.The shapes and dimensions of the two
Comme par ailleurs l'épaisseur de la plaque en
réfractaire isolant 21 est supérieure à celle de la
ceinture refroidie, l'effort de poussée transmis par la
platine 19 est retransmis uniquement à la paroi
d'obturation 3, et non à la ceinture 25, ce qui évite de
créer des contraintes entre cette ceinture et le matériau
réfractaire de la paroi d'obturation, et donc des risques
de déformations de celle-ci ou sa désolidarisation de la
ceinture 25.As also the thickness of the plate in
insulating refractory 21 is greater than that of the
belt cooled, the thrust force transmitted by the
Lors de la fixation de la seconde ceinture 25 sur
la ceinture refroidie 22, il peut se produire un
déplacement de cette dernière vers les cylindres ; c'est
pourquoi la liaison avec la plaque réfractaire isolante
21 n'est pas rigide, et le crochet 23 a aussi une
certaine liberté de déplacement dans le berceau 24, dans
la direction axiale.When attaching the
Préférentiellement, la platine 19 est en acier, de
même que la ceinture refroidie 22, et la seconde ceinture
25 est en un matériau qui présente de bonnes
caractéristiques à chaud tel que de l'acier ou de la
fonte d'acier, son refroidissement naturel étant assisté
par contact avec la ceinture 22 refroidie par une
circulation interne d'eau.Preferably, the
Avant le début de la coulée, il est nécessaire de
préchauffer la paroi d'obturation 3. Pour cela,
l'ensemble de support 4 est éloigné des cylindres, le
châssis 5 étant à cet effet muni de moyens, connus en
soi, non représentés, permettant d'assurer son
déplacement par rapport à la structure de l'installation
de coulée.Before the start of casting, it is necessary to
preheat the
Un four de préchauffage à rayonnement est alors
amené en face de la paroi d'obturation pour porter celle-ci
à une température élevée, le réfractaire isolant 21,
la plaque refroidie 19 et la ceinture refroidie 22
limitant l'échauffement du reste du dispositif.A radiation preheating oven is then
brought in front of the shutter wall to carry it
at a high temperature, the insulating refractory 21,
the cooled
Juste avant le démarrage, le four et évacué, puis
le châssis 5 est ramené en position et bridé sur la
structure. Le vérin 9 est alors commandé pour amener la
paroi d'obturation au contact des chants des cylindres et
en continuant son mouvement, déplacer la plaque de
poussée 10, ce qui a pour effet de comprimer les ressorts
14. Le vérin 9 est régulé en position. L'effort qu'il
fournit est transmis à la plaque de poussée par le
chariot 8 et ses appuis 12, et cet effort est ensuite
réparti sur la platine 19 par les ressorts ; les efforts
fournis localement par chacun des dits ressorts 14 sont
donc essentiellement fonction de la compression de ceux-ci
et donc de la position relative de la platine et de la
plaque de poussée. Just before starting, the oven and evacuated, then
the
Ainsi, pour une position déterminée du vérin 9, la
paroi d'obturation 3 est appliquée contre les cylindres 1
dans une position qui assure le meilleur contact
possible. En effet, même si, par exemple, les chants des
deux cylindres sont légèrement voilés ou décalés
axialement l'un par rapport à l'autre, la paroi
d'obturation est appliquée contre les deux cylindres,
avec un minimum de jeu. Cependant, les efforts de
poussée, du côté du cylindre dont le chant déborde par
rapport à l'autre, sont plus élevés, ce qui va entrainer
une usure plus rapide de ce côté de la paroi d'obturation
3, et donc tendre à ramener son plan général parallèle à
celui de la plaque de poussée 10, conduire à une
répartition plus homogène des efforts fournis par les
ressorts 14, et obtenir un contact optimal pour
l'étanchéité entre paroi d'obturation 3 et cylindres l.Thus, for a determined position of the
Au cours de la coulée, si une solidification parasite apparait entre un cylindre et la paroi d'obturation, celle-ci recule du côté du dit cylindre, mais garde le meilleur contact possible avec le deuxième cylindre. Le dit recul comprime les ressorts du côté où il se produit et augmente spontanément en conséquence l'effort de poussée de ce côté ; il s'ensuit une augmentation du frottement qui conduit plus ou moins rapidement à l'élimination de la dite solidification.During casting, if a solidification parasite appears between a cylinder and the wall shutter, this recedes on the side of said cylinder, but keep the best possible contact with the second cylinder. The said recoil compresses the springs on the side where it occurs and increases spontaneously as a result the pushing force on this side; it follows a increased friction which leads more or less quickly to the elimination of said solidification.
Dans le cas où se produit une usure accentuée d'un
côté de la paroi d'obturation, les ressorts 14 vont agir
de manière que la paroi d'obturation reste cependant en
contact avec le cylindre situé de ce côté. Ce déplacement
peut être détecté soit par un capteur de déplacement,
soit par une réduction de l'effort de poussée, résultant
du fait que les ressorts situés du dit côté se trouvent
ainsi moins comprimés. Le vérin 9 peut alors être
commandé pour avancer la plaque de poussée vers les
cylindres, jusqu'à rétablir l'effort souhaité
d'application de la paroi d'obturation contre le chant du
cylindre du côté où s'est produit l'usure. Ce faisant,
les efforts de l'autre côté sont accrus et vont donc
conduire à une usure accélérée de cet autre côté, ce qui
aura pour résultat de ramener la paroi d'obturation
parallèlement à la plaque de poussée, et donc de
retrouver l'étanchéité optimale.In the event of increased wear of a
side of the closure wall, the springs 14 will act
so that the closing wall remains in
contact with the cylinder located on this side. This displacement
can be detected either by a displacement sensor,
either by a reduction of the pushing force, resulting
because the springs located on the said side are
thus less tablets. The
Ainsi, les ressorts 14 permettent non seulement d'absorber des défauts du contact paroi d'obturation - cylindre, mais tendent à assurer une correction automatique, spontanée de ces défauts. Contrairement à la technique antérieure indiquée précédemment où l'on érode en continu la paroi réfractaire pour assurer le meilleur contact possible avec les cylindres, en la poussant contre ceux-ci avec un effort important, l'invention permet d'une part de réduire cet effort de poussée, et d'autre part de n'user la paroi d'obturation que lorsqu'apparait une perturbation du contact.Thus, the springs 14 not only allow absorb faults in the shutter wall contact - cylinder, but tend to provide correction automatic, spontaneous of these faults. Unlike the previous technique indicated above where one erodes continuous refractory wall to ensure the best possible contact with the cylinders, by pushing it against these with great effort, the invention allows on the one hand to reduce this pushing force, and on the other hand to use the obturation wall only when a contact disturbance occurs.
De plus, même en l'absence de telles perturbations,
le dispositif selon l'invention permet de régler la force
d'appui de la paroi d'obturation contre le chant des
cylindres, notamment en fonction de chaque étape de la
coulée, par une simple commande du vérin 9. On pourra par
exemple exercer une force importante au démarrage de la
coulée, pour effectuer une sorte de rodage de la paroi
d'obturation contre le chant des cylindres, puis réduire
cette force en régime de coulée stabilisée, et
l'augmenter volontairement en cas d'incident, par exemple
d'infiltration de métal liquide.Additionally, even in the absence of such disturbances,
the device according to the invention makes it possible to adjust the force
of the shutter wall against the edge of the
cylinders, in particular according to each stage of the
casting, by a simple control of the
Dans une variante de réalisation du dispositif déjà
indiquée, les ressorts peuvent être remplacés par des
vérins pilotés qui assureront les mêmes fonctions que les
ressorts, à partir de la mesure de leur pression interne,
et de la position de la paroi d'obturation. Chacun des
vérins pourra être régulé individuellement selon des lois
prédéfinies, pour assurer par exemple soit un effort
proportionnel au déplacement, les vérins agissant alors
comme des ressorts, soit un effort constant, ou encore
selon des lois du type
De plus, une régulation de synchronisation de l'usure de la paroi d'obturation, agissant sur tous les vérins, pourra être combinée à la régulation individuelle, par exemple en définissant un des vérins comme pilote et en asservissant les autres sur le vérin pilote.In addition, a synchronization regulation of the wear of the closure wall, acting on all cylinders, can be combined with regulation individual, for example by defining one of the cylinders as a pilot and enslaving others on the cylinder pilot.
Préférentiellement alors, on choisira comme vérin pilote celui situé vers le bas de la paroi d'obturation, c'est-à-dire à proximité du col entre les cylindres, où l'usure de la paroi d'obturation est généralement plus accentuée.Preferably then, we will choose as cylinder pilot the one located towards the bottom of the obturation wall, that is to say near the neck between the cylinders, where the wear on the sealing wall is generally more accentuated.
Claims (6)
- Device for continuous casting of thin metal products between rolls, including two cooled counter-rotatory rolls (1), two lateral closure walls (3) and means for supporting and applying by pressure the said closure walls against the edges (2) of the rolls, characterized in that the said support means include:a thrust plate (10) which can be moved in the axial direction (A) of the rolls (1) and is arranged perpendicular to this direction,a panel (19), which supports the closure wall (3) and which is carried by the thrust plate (10) and arranged facing the latter,at least three thrust members (14) interposed between the said thrust plate (10) and the said panel (9), these members being distributed over a zone of shape corresponding to that of the closure wall (3), and being capable of exerting thereon thrust forces independently of one another, the panel (19) being designed so that the thrust force which it transmits is applied only on the said wall (3), characterized in that, the closure wall consisting of a plate (3) of hard refractory material surrounded by a metal belt (25) to which it is connected, the said metal belt (25) is fixed on a cooled belt (22) surrounding a plate of thermally insulating refractory material (21), with freedom of displacement of the latter with respect to the said cooled belt (22) in the axial direction of the rolls, the cooled belt (22) being supported by the said panel (19), and the insulating refractory plate (21) being designed so that the thrust force transmitted by the panel to the said plate (21) is retransmitted by the latter only to the said plate of hard refractory material (3).
- Device according to Claim 1, characterized in that the said thrust members are springs (14).
- Device according to Claim 2, characterized in that the stiffness of each spring (14) and the distribution of the springs in the said zone are determined so that, for the same flexion of these springs, the thrust force which they exert in the lower part of the closure wall is greater than the thrust force exerted in the upper part of the wall.
- Device according to Claim 1, characterized in that the thrust members are controlled jacks.
- Device according to Claim 4, characterized in that the jacks are pressure-regulated.
- Device according to one of Claims 1 to 5, characterized in that the thrust plate (10) is carried by a carriage (8) which can be moved in the said axial direction, and in that it includes means (9) for displacing the said carriage with respect to the rolls and for exerting thereon a force directed towards the rolls.
Applications Claiming Priority (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| FR9408319 | 1994-06-30 | ||
| FR9408319A FR2721843B1 (en) | 1994-06-30 | 1994-06-30 | CONTINUOUS CASTING ARRANGEMENT BETWEEN CYLINDERS WITH APPLIED SIDE SHUTTER WALLS |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| EP0698433A1 EP0698433A1 (en) | 1996-02-28 |
| EP0698433B1 true EP0698433B1 (en) | 1999-01-07 |
Family
ID=9465040
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| EP95401560A Expired - Lifetime EP0698433B1 (en) | 1994-06-30 | 1995-06-29 | Twin roll casting machine with applied side walls |
Country Status (23)
| Country | Link |
|---|---|
| US (2) | US5584335A (en) |
| EP (1) | EP0698433B1 (en) |
| JP (2) | JP3717208B2 (en) |
| KR (1) | KR100358886B1 (en) |
| CN (1) | CN1054790C (en) |
| AT (1) | ATE175369T1 (en) |
| AU (1) | AU693548C (en) |
| BR (1) | BR9503040A (en) |
| CA (1) | CA2152231C (en) |
| CZ (1) | CZ285168B6 (en) |
| DE (1) | DE69507092T2 (en) |
| DK (1) | DK0698433T3 (en) |
| ES (1) | ES2128009T3 (en) |
| FI (1) | FI110070B (en) |
| FR (2) | FR2721843B1 (en) |
| PL (1) | PL178494B1 (en) |
| RO (1) | RO116711B1 (en) |
| RU (1) | RU2112624C1 (en) |
| SK (1) | SK281536B6 (en) |
| TR (1) | TR199500791A1 (en) |
| TW (1) | TW275595B (en) |
| UA (1) | UA26353C2 (en) |
| ZA (1) | ZA955412B (en) |
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|---|---|---|---|---|
| FR2737859B1 (en) * | 1995-08-18 | 1997-09-12 | Usinor Sacilor | SUPPORT DEVICE FOR A SIDE FACE OF A CONTINUOUS CASTING PLANT OF METAL BANDS BETWEEN CYLINDERS |
| IT1284214B1 (en) * | 1996-07-16 | 1998-05-14 | Acciai Speciali Terni Spa | CONTINUOUS CASTING METHOD OF THIN METALLIC PRODUCTS AND EQUIPMENT SUITABLE FOR ITS EXECUTION |
| IT1284201B1 (en) * | 1996-07-31 | 1998-05-08 | Sviluppo Materiali Spa | PLATES WITH ANTI-WEAR CERAMIC FILLINGS FOR MACHINES FOR CONNTINUAL CASTING OF THIN FLAT BODIES AND PROCEDURE FOR THEIR |
| AUPP331598A0 (en) * | 1998-05-04 | 1998-05-28 | Bhp Steel (Jla) Pty Limited | Strip casting |
| FR2786716B1 (en) * | 1998-12-03 | 2001-01-05 | Usinor | DEVICE FOR APPLYING A SIDE SIDE FOR THE CONTINUOUS CASTING INSTALLATION OF METAL STRIPS BETWEEN TWO CYLINDERS AGAINST THE PLANAR FACES OF THE CYLINDERS |
| FR2787360B1 (en) * | 1998-12-21 | 2001-02-02 | Usinor | SIDE SIDE FOR CONTINUOUS CASTING INSTALLATION OF METAL STRIPS |
| CH691574A5 (en) * | 1999-09-24 | 2001-08-31 | Main Man Inspiration Ag | The strip casting machine for producing a metal strip. |
| EP1287926B1 (en) * | 2001-08-29 | 2006-03-01 | DANIELI & C. OFFICINE MECCANICHE S.p.A. | Device for lateral containment of liquid steel between crystallizing rolls of a casting machine for a steel strip |
| FR2833871B1 (en) | 2001-12-20 | 2004-07-09 | Usinor | METHOD AND PLANT FOR MANUFACTURING METAL STRIPS FROM STRIPS CAST DIRECTLY FROM LIQUID METAL |
| EP1646464B1 (en) * | 2003-07-01 | 2006-11-29 | SMS Demag Aktiengesellschaft | Method for operating a strip casting machine for producing a metal strip |
| US7556084B2 (en) * | 2006-03-24 | 2009-07-07 | Nucor Corporation | Long wear side dams |
| US7503375B2 (en) * | 2006-05-19 | 2009-03-17 | Nucor Corporation | Method and apparatus for continuously casting thin strip |
| US8251127B2 (en) * | 2008-06-24 | 2012-08-28 | Nucor Corporation | Strip casting apparatus with independent delivery nozzle and side dam actuators |
| JP5837758B2 (en) | 2011-04-27 | 2015-12-24 | キャストリップ・リミテッド・ライアビリティ・カンパニー | Twin roll casting apparatus and control method thereof |
| CN102490224B (en) * | 2011-11-24 | 2013-12-04 | 浙江明筑新材料有限公司 | Improved fence braiding machine |
| US10046384B2 (en) | 2015-09-30 | 2018-08-14 | Nucor Corporation | Side dam with pocket |
| WO2018119333A1 (en) * | 2016-12-23 | 2018-06-28 | Nucor Corporation | Adjustable side dam holder |
| WO2018119552A1 (en) * | 2016-12-26 | 2018-07-05 | 宝山钢铁股份有限公司 | Mounting device for twin-roll thin-strip continuous-casting side sealing plate, and mounting method thereof |
| CN116967408A (en) | 2019-01-28 | 2023-10-31 | 诺维尔里斯公司 | Short belt side stop for twin belt casting machine |
| CN110027069A (en) * | 2019-05-13 | 2019-07-19 | 郎军伟 | A kind of seat presser feet processed and the braking member structure of cooperation |
| CN110815458A (en) * | 2019-11-29 | 2020-02-21 | 河北科技师范学院 | Grass-shooting type thin grass curtain cloth grass method and grass-distributing device |
| CN111957915A (en) * | 2020-09-10 | 2020-11-20 | 一重集团大连工程技术有限公司 | Self-adaptive control device for side sealing plates of double-roller thin-strip continuous casting roller |
| CN112976199B (en) * | 2021-03-30 | 2023-03-28 | 霍邱县淮美奇工艺品有限公司 | Reed tabletting tool for processing wicker products |
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|---|---|---|---|---|
| US2058447A (en) * | 1932-05-16 | 1936-10-27 | Clarence W Hazelett | Metalworking process |
| JPS579565A (en) * | 1980-06-19 | 1982-01-19 | Mitsubishi Heavy Ind Ltd | Continuous casting equipment for metallic sheet |
| JPS579566A (en) * | 1980-06-23 | 1982-01-19 | Mitsubishi Heavy Ind Ltd | Direct rolling type continuous casting method of metallic sheet |
| JPS6233047A (en) * | 1985-08-05 | 1987-02-13 | Nisshin Steel Co Ltd | Twin drum type continuous casting machine |
| JPS6326243A (en) * | 1986-07-17 | 1988-02-03 | Nippon Yakin Kogyo Co Ltd | Direct casting device for thin metallic strip |
| JPH07108435B2 (en) * | 1987-01-19 | 1995-11-22 | 株式会社日立製作所 | Twin roll type continuous casting machine |
| JPS6483337A (en) * | 1987-09-22 | 1989-03-29 | Ishikawajima Harima Heavy Ind | Twin roll type continuous casting machine |
| JPH0199749A (en) * | 1987-10-12 | 1989-04-18 | Hitachi Ltd | Continuous casting machine |
| FR2652022B1 (en) * | 1989-06-26 | 1994-04-08 | Irsid | CASSETTE FOR FORMING A FRONTAL CLOSING FACE OF A CONTINUOUS CASTING DEVICE OF LIQUID METAL. |
| JPH0741376B2 (en) * | 1990-06-11 | 1995-05-10 | 新日本製鐵株式会社 | Thin strip continuous casting method |
| JP2831136B2 (en) * | 1990-12-26 | 1998-12-02 | 新日本製鐵株式会社 | Method and apparatus for controlling side dam pressing force in continuous casting machine for thin slab |
| JPH0749140B2 (en) * | 1992-02-17 | 1995-05-31 | 三菱重工業株式会社 | Twin-drum type continuous casting machine |
| JPH05253647A (en) * | 1992-03-12 | 1993-10-05 | Nippon Yakin Kogyo Co Ltd | Method for directly casting metal strip and apparatus therefor |
| JPH06326243A (en) * | 1993-05-13 | 1994-11-25 | Dainippon Printing Co Ltd | Manufacture of lead frame member for resin molded semiconductor device |
-
1994
- 1994-06-30 FR FR9408319A patent/FR2721843B1/en not_active Expired - Fee Related
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1995
- 1995-05-11 FR FR9505535A patent/FR2722124A1/en active Pending
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- 1995-06-28 RO RO95-01225A patent/RO116711B1/en unknown
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- 1995-06-28 FI FI953187A patent/FI110070B/en not_active IP Right Cessation
- 1995-06-28 AU AU23314/95A patent/AU693548C/en not_active Ceased
- 1995-06-28 SK SK847-95A patent/SK281536B6/en not_active IP Right Cessation
- 1995-06-29 AT AT95401560T patent/ATE175369T1/en active
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- 1995-06-29 CN CN95109199A patent/CN1054790C/en not_active Expired - Fee Related
- 1995-06-29 EP EP95401560A patent/EP0698433B1/en not_active Expired - Lifetime
- 1995-06-29 CZ CZ951718A patent/CZ285168B6/en not_active IP Right Cessation
- 1995-06-29 ZA ZA955412A patent/ZA955412B/en unknown
- 1995-06-29 ES ES95401560T patent/ES2128009T3/en not_active Expired - Lifetime
- 1995-06-29 DK DK95401560T patent/DK0698433T3/en active
- 1995-06-30 TR TR95/00791A patent/TR199500791A1/en unknown
- 1995-06-30 BR BR9503040A patent/BR9503040A/en not_active IP Right Cessation
- 1995-06-30 PL PL95309449A patent/PL178494B1/en not_active IP Right Cessation
- 1995-06-30 JP JP18833895A patent/JP3717208B2/en not_active Expired - Fee Related
- 1995-06-30 RU RU95110770A patent/RU2112624C1/en not_active IP Right Cessation
- 1995-06-30 KR KR1019950018708A patent/KR100358886B1/en not_active IP Right Cessation
- 1995-06-30 US US08/497,028 patent/US5584335A/en not_active Ceased
- 1995-07-29 TW TW084107862A patent/TW275595B/zh active
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1998
- 1998-12-17 US US09/215,429 patent/USRE37214E1/en not_active Expired - Lifetime
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