EP0561724B1 - Doppelrollen-Stranggiessvorrichtung zum Giessen von metallischen Produkten - Google Patents

Doppelrollen-Stranggiessvorrichtung zum Giessen von metallischen Produkten Download PDF

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Publication number
EP0561724B1
EP0561724B1 EP93470008A EP93470008A EP0561724B1 EP 0561724 B1 EP0561724 B1 EP 0561724B1 EP 93470008 A EP93470008 A EP 93470008A EP 93470008 A EP93470008 A EP 93470008A EP 0561724 B1 EP0561724 B1 EP 0561724B1
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EP
European Patent Office
Prior art keywords
rolls
refractory material
contact
cylinders
sectors
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
Application number
EP93470008A
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English (en)
French (fr)
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EP0561724A1 (de
Inventor
Jacques Barbe
Hugues Legrand
Gérard Raisson
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Thyssen Stahl AG
USINOR SA
Original Assignee
Thyssen Stahl AG
USINOR Sacilor SA
Priority date (The priority date 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 date listed.)
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Publication date
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Publication of EP0561724A1 publication Critical patent/EP0561724A1/de
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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 a device for the continuous casting of a metal product between cylinders, having flexible side walls.
  • the liquid metal is poured into a pouring space defined by the portions of the surfaces of the cylinders situated above a plane passing through the parallel axes of these cylinders and by fixed end side walls called small faces bearing on the axial ends of the cylinders.
  • the small faces must be applied against the axial ends of the cylinders, so as to obtain an effective seal to prevent any leakage of molten metal.
  • the wear resistance of the insulating walls is generally insufficient to ensure a long casting time without changing the walls.
  • the metal plates have an external edge of frustoconical shape, the edge delimiting the large base of the frustoconical surface is placed in contact with the corresponding cylinder, so as to be superimposed on the edge of the cylinder.
  • the pieces of insulating refractory material from the side walls are interposed between the frustoconical edges of the two metal plates.
  • the rolls expand under the effect of the heat of the liquid metal, in particular in the direction of their axes and along their edges coming into contact with the metal plates of the side walls.
  • the expansion of the cylinders in the axial direction occurs in an area of the cylinders coming into contact with the molten metal during casting and solidification, the temperature of which varies according to the circumferential direction of the cylinder.
  • the deformation of the cylinders in the axial direction is therefore essentially variable depending on the circumference of the cylinder and concerns only part of the circumference of the cylinder.
  • the deformation of the cylinders in the axial direction has a cyclical character.
  • the object of the invention is therefore to propose a device for the continuous casting of a metallic product comprising two counter-rotating cylinders with parallel axes arranged opposite each other with a certain distance and two fixed side walls bearing on the axial ends of the cylinders delimiting a casting space between the cylinders and each comprising two annular plates which are in rubbing contact each with a flat front surface of one of the two cylinders at one of the ends of the cylinder and at least one interleaved complementary wall between the two plates and between the cylinders, this device making it possible to obtain good contact between the annular plates and the cylinders during casting, despite the variable and cyclic deformation of the cylinders in the axial direction.
  • each of the plates of each of the side walls has a plurality of successive annular sectors in the circumferential direction elastically deformable with respect to each other, so as to be able to move in the axial direction relative to the cylinders, during casting. .
  • Figure 1 is a front elevational view of a side wall of a casting device according to the invention.
  • Figure 2 is a partial sectional view along 2-2 of Figure 1 of the casting device according to the invention.
  • Figure 3 is a sectional view along 3-3 of Figure 1.
  • FIG. 4 is a partial plan view of a first face of an annular plate of a side wall of the casting device shown in FIGS. 1, 2 and 3.
  • FIG. 5 is a partial plan view of the second face of the annular plate shown in FIG. 4.
  • Figure 6 is a sectional view along 6-6 of Figure 4.
  • FIG. 7 is a sectional view along 7-7 of FIG. 4.
  • Figures 8, 9 and 10 relate to an alternative embodiment of the casting device according to the invention.
  • Figure 8 is a sectional view through a plane passing through the axis of the cylinders of a side wall and the end portion of the cylinders in contact with this side wall.
  • Figure 9 is a sectional view similar to the view of Figure 8 showing the position of a metal support plate of a side wall as shown in Figure 8, when this wall is not in contact with the cylinders of the casting device.
  • FIG. 10 is a plan view of a metal support plate for the wall shown in FIG. 8.
  • Figure 11 is a schematic perspective view showing in a greatly exaggerated manner, the deformation during casting of a cylinder of a continuous casting machine between cylinders.
  • Figure 12 is a schematic sectional view showing the bearing position of a plate of a side wall as shown in Figure 8, on the edge of a cylinder deformed by expansion in the axial direction.
  • FIG. 1 shows the front face directed towards the cylinders of a casting device between cylinders, of a side wall generally designated by the reference 1.
  • the casting device comprises two counter-rotating cylinders with parallel axes 2, 3 arranged opposite and with a certain spacing between their lateral surfaces, so as to delimit a casting space which is closed, at each of the front ends of the cylinders, by a side wall such as 1.
  • the casting space between the cylinders has a minimum width corresponding to the thickness of the product to be cast, in the plane containing the axes of rotation of the cylinders 2 and 3.
  • the side wall 1 comprises two metal support plates 4, 5 in the form of annular sectors having an angular amplitude of the order of 60 ° and which are brought into contact along their external annular edge with the edge of the cylinders 2, 3.
  • the outer edge of the support plates 4, 5 is chamfered and has a frustoconical shape.
  • the half-angle at the top of the truncated cone has a value close to 60 °.
  • the support plates 4, 5 are kept in rubbing contact with the edge of the cylinders 2, 3 in rotation, so that the edge of the frustoconical edge corresponding to the large base is superimposed with the edge of the corresponding cylinder 2, 3.
  • a piece of refractory material 6 which is preferably at the start of casting, protruding in the axial direction, inside the casting space 8 delimited by the side surfaces of the cylinders 2 and 3 and by the side walls 1 also called small faces.
  • liquid metal is poured into the space 8 and comes into contact with the cylinders 2 and 3 which are rotated.
  • the cylinders 2 and 3 make it possible to cool and solidify the liquid metal, so that it gradually forms, two skins solidified in contact with the cylinders 2, 3 in rotation, the skins solidified joining at level of the narrowest part or neck of the casting space 8 situated in the vicinity of the axial plane of the cylinders 2 and 3.
  • the side wall 1 comprises a set of support and holding elements which is connected to the frame of the casting installation to ensure the support of the side wall against the front ends of the cylinders.
  • the support plate 12 is itself fixed by welding to a holding assembly 13 which can be attached and fixed by screws 14 to a fixed part 15 of the casting installation.
  • clamping devices such as 16 fixed on the support plate 12 make it possible to exert a force in the axial direction of the cylinders 2 and 3, on the piece of refractory material 6, by the through a coil spring 17.
  • the helical spring 17 exerts the axial force on the part 6, by means of a ring 18, a metal part 19 and a protective plate of refractory material 20 having a hardness greater than the material of the part 6.
  • the piece of refractory material 6 intended to come into contact with the liquid metal inside the casting space 8 comes to bear, by two edges of frustoconical shape, on the frustoconical edges facing the plates d 'support 4 and 5 and on the flat rear face of the plates 4 and 5 opposite the face of these plates 4 and 5 bearing on the cylinders 2 and 3.
  • the plate holders 10 and 11 have, along their entire length, a transverse groove 21 (or 22) located in the vicinity of the corresponding support plate 4 or 5 and extending over a substantial part of the width of the plate holder 10 or 11.
  • the grooves 21 and 22 which separate the plate holders 10 and 11 into two parts of unequal importance make it possible to obtain a certain elasticity of the mounting, due to the possibilities of bending of the plate holder at the level of the area of junction between the two parts located on either side of the groove.
  • grooves 21 and 22 make it possible to limit the heat transfers via the plate holders.
  • FIGS. 4 to 7 describe the bearing plates of the side walls of the casting device shown in FIGS. 1, 2 and 3.
  • FIG. 4 and 5 there is shown a portion 25 of a support plate such as 5 which is constituted by a metal blade in the form of an annular sector comprising a first face which is shown in Figure 4 and which is intended coming into contact with the edge of the cylinder 3 and a second opposite face which is shown in FIG. 5 and which is intended to come into contact with the corresponding support plate holder 11 and with the piece of refractory material 6.
  • a support plate such as 5 which is constituted by a metal blade in the form of an annular sector comprising a first face which is shown in Figure 4 and which is intended coming into contact with the edge of the cylinder 3 and a second opposite face which is shown in FIG. 5 and which is intended to come into contact with the corresponding support plate holder 11 and with the piece of refractory material 6.
  • Each of the support plates 4 and 5 may consist of several elements 25 as shown in Figures 4 and 5, arranged one after the other and fixed on the corresponding plate holder.
  • the annular element 25 constituting a part of the support plate 5 comprises a heel 26 constituting its internal part and a blade 27 of thinner thickness than the heel 26 and constituting its external part.
  • the heel 26 is crossed by openings 28 constituting housings for fixing screws 30 of the support plate 5 on the corresponding plate holder 11, as shown in FIG. 2.
  • the screw holes 28 comprise a frustoconical entry part opening onto the face 25a of the element 25 directed towards the cylinder 3 and intended to receive the head of the screw 30.
  • the heel 26 of the element 25 is also crossed by a lubrication orifice 29 opening onto the face 25b of the element 25 which is fitted against the plate holder 11, at the level of the heel 26 and against the complementary piece of refractory material .
  • the lubrication orifice 29 opens onto the face 25a of the element 25, inside a slot 31 machined in the direction radial of the blade 27 extending the heel 26 outwards.
  • a liquid lubricant is introduced into the lubrication orifice 29, via a lubricant distribution cavity machined in the plate holder 11.
  • the lubricant reaches via the orifice 29, in the opening 31 which is on the face 25a of the blade 27 located opposite or in contact with the surface of the cylinder 3. This provides lubrication rubbing surfaces of the blade 27 of the element 25 of the support plate and of the cylinder 3.
  • the external part of the annular element 25 constituting the blade 27 is separated into successive sectors 27a, 27b, 27c, 27d by cutouts 32a, 32b, 32c in radial direction relative to the element 25 and following the entire thickness of the blade 27.
  • cutouts 32a, 32b, 32c, 33a, 33b, 33c allow the successive sectors 27a, 27b, 27c, 27d of the element 25 of the support plate 5, to deform independently of each other, in in particular by bending, in a direction perpendicular to the faces 25a and 25b of the element 25, that is to say in an axial direction relative to the cylinders 2 and 3.
  • the sectors 27a, 27b, 27c and 27d of the metal strip 27 are perfectly elastic and are capable of returning to their initial position, after displacement in the axial direction, for example due to the expansion of the cylinder 3.
  • the blades 27 made up of successive annular sectors 27a, 27b, 27c, 27d have a certain inclination in the axial direction, towards the cylinder 3, so that the outer end of the blade 27 constitutes the part of this blade coming into contact with the cylinder 3, and that the internal part of the blade 27 secured to the heel 26 has a certain clearance J relative to the front surface of the cylinder 3, when it is brought into contact side wall and cylinders.
  • the radial cuts such as 32a, 32b, 32c and the circumferential cuts such as 33a, 33b, 33c are made by electro-erosion and have a width of the order of 0.4 mm.
  • the outward bending of the blade 27 is such that the deflection of the blade 27 corresponding to the clearance J of the heel 26 of the support plate relative to the cylinder 3 is between 0.5 and 1 mm.
  • FIGS. 6 and 7 the element 25 of the support plate has been shown in its initial position, before the start of the casting installation and before a compression force is applied. on the support plate to bring it into contact with cylinder 3.
  • the annular sectors 27a, 27b, 27c, 27d of the element 25 of the support plate are liable to deform in the axial direction of the cylinders, with respect to each other , in particular by bending, owing to the fact that these sectors are separated by the radial cutouts 32a, 32b and 32c and that the length of the connection zones between these sectors annular and the heel of the support plate is reduced by the presence of the circumferential cuts 33a, 33b and 33c.
  • the successive annular sectors 27a, 27b, 27c, 27d therefore have good flexibility which allows them to adapt to the deformation profile of the cylinder under the effect of expansion and to the cyclic nature of this deformation, during the rotation of the cylinders. .
  • support plates comprising an external part produced in the form of a thin and flexible blade separated by cuts in successive annular sectors in the circumferential direction and also having a camber from their outer ends towards the cylinder.
  • the refractory material constituting the part 6 closing the casting space on its lateral sides is preferably a fibrous refractory having good thermal insulation characteristics and a relatively low hardness.
  • This material may in particular have a hardness significantly lower than the hardness of the protective plate 20 coming into contact with its external face.
  • a fibrous material can consist, for example, of alumina fibers impregnated with zirconia gel. Such a product is marketed under the name of Procélit.
  • the side wall generally designated by the reference 40 comprises a support 41 in the form of a box having two curved side walls 42 and 43 constituting the support plate holders similar to the elements 10 and 11 shown in FIGS. 2 and 3 .
  • the support plates such as the plate 45 have successive sectors such as 45a, 45b, 45c, 45d, 45e and 45f which are separated by cutouts in radial direction passing through the blade metal in the form of an annular sector constituting the plate 45, along its entire thickness.
  • Each of the sectors such as 45a comprises from the outside towards the inside of the plate 46, a shoe 47 and a flexible blade 48 secured to a heel 49 by means of which the plate 45 is fixed to the plate holder by through a screw 46.
  • the pads 47 have a profiled shape in the radial direction, limited by two faces inclined relative to each other 47a and 47b making an acute angle.
  • the external face 47a of the shoe 47 is intended to come to bear against the external edge of the corresponding cylinder 50 of the casting installation.
  • the external face of the pads of the support plate 44 likewise comes into contact with the external edge of the second cylinder 51 of the casting installation, in the service position of the side wall 40.
  • the pads 47 of profiled shape are separated from each other by the radial cuts 52 of small width which can be produced by electro-erosion.
  • the elastic blades 48 whose thickness is substantially less than the thickness of the pads 47 are separated from each other by radial slots 53 having a width in the circumferential direction of a few millimeters.
  • the parts 49 of the sectors of the plate 45 constituting the fixing heels of the support plate are integral with each other to form a single fixing heel in the form of an annular sector.
  • the outer edge of the cylinders 50 and 51 coming into contact with the pads such as 47 of the support plates is coated with an anti-wear layer, respectively 54 and 55.
  • the wear layers 54 and 55 produced in an annular zone on the edge of the cylinder can be produced by coating or by treatment of the surface of the cylinder.
  • This wear layer can be constituted for example by a nitride such as boron nitride or by a carbide such as chromium carbide.
  • the internal faces such as 47b of the elastic deformable sectors constituting the support plates are inclined and constitute, for the assembly of a support plate, a substantially frustoconical surface.
  • a piece 56 of refractory material disposed inside the housing 41 and comprising two external surfaces of frustoconical shape.
  • the piece of refractory material 56 closes the casting space 58 formed between the cylinders 50 and 51.
  • the refractory piece 56 which is made of a relatively soft material such as a fibrous refractory material has good thermal insulation characteristics and makes it possible to avoid heat transmission between the liquid metal and the housing 41 of the side wall 40. More, the relatively soft part 56 is susceptible to wear by the metal being solidified or solidified, so that a cavity is formed in the part 56 inside which the metal can partially solidify and constitute a lateral slide for the part being cast and solidifying in the casting space 58 and driven by the cylinders 50 and 51 in rotation.
  • a relatively soft material such as a fibrous refractory material
  • the part 56 makes it possible to transmit the axial steering force exerted on the housing 41 of the wall 40 to the support plates 44 and 45, so as to apply them to the ends of the cylinders 50 and 51.
  • Parts 59 and 59 ′ made of a second refractory material are disposed against the internal face of the blades 48 of the support plates 44 and 45.
  • the parts 59 and 59 ′ have a surface opposite the flexible blades 48 of substantially frustoconical shape extending the surface 47b of the pads 47.
  • the part 56 made of a first refractory material is not applied directly to the surface 47b of the pads 47 and to the frustoconical surface of the parts 59 and 59 ′ in a second refractory material.
  • a relatively thin layer 60 of a third refractory material is interposed between the part 56 and the frustoconical surfaces of the pads 47 and the parts 59 and 59 '.
  • the second refractory material constituting the parts 59 and 59 ′ is a highly insulating material which is intended to protect the flexible blades 48, so that these blades do not lose their elasticity under the effect of the heat coming from the liquid metal filling the pouring space 58.
  • the pads 47 are little cooled in contact with the cylinders 50 and 51 and that the heat of the liquid metal transmitted to the end portion of the pads 47 reaches the blades 48 by conduction. In order to preserve the elasticity of the blades 48, it is therefore necessary to limit the supply of heat to these blades to the heat transmitted by conduction by the pads 47.
  • the third refractory material constituting the layers 60 must have very good elasticity characteristics in order to be able to adapt to the movements of the pads 47 of the blades 48 and of the insulating parts 59 and 59 ', during the expansion of the cylinders in the axial direction.
  • the first refractory material constituting the part 56 is a fibrous material such as the material sold under the name Procélit.
  • the second highly insulating material constituting the parts 59 and 59 ′ is preferably a refractory foam such as silica foam.
  • the metallic material constituting the support plates 44 and 45 is preferably a steel having a low coefficient of expansion and high mechanical characteristics such as a Maraging steel.
  • FIGS. 11 and 12 one sees a front end part of a cylinder 61 of a continuous casting installation between cylinders and, in a highly exaggerated manner, the deformation 62, in the axial direction of the cylinder 61, caused by expansion under the effect of the heat of the liquid metal poured in contact with the cylinder 61.
  • the deformation 62 relates to an external annular zone of the cylinder 61 and has an increasing amplitude from the interior of the cylinder towards the exterior and from the upper part of the casting space to the lower part of this pouring space corresponding to the neck at which a partially solidified product is extracted.
  • the deformation 62 relates to a constantly variable area of the cylinder 61 and has a cyclical character.
  • the pads 47 of the support plates come into contact with the external end part of the deformed zone 62, the contact of this external part or possibly of the entire surface 47a of the pad 47 being ensured due to the elasticity of the blades 48.
  • the casting device according to the invention therefore has the advantage of having side walls which can adapt perfectly to the deformations of the cylinder in the axial direction during casting.
  • the support plates can be constituted by crown or disc portions comprising successive deformable sectors in the circumferential direction produced in any manner, either by cutting a monobloc plate or by using elements reported.
  • the support plates can be made of steel or carbon fibers.
  • the refractory materials constituting the internal part of the side wall in contact with the support plates and the anti-wear materials for coating the cylinders may be different from those which have been described.
  • the invention applies to any installation for casting a metal product between two cylinders.

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  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Continuous Casting (AREA)
  • Rolls And Other Rotary Bodies (AREA)
  • Treatment Of Steel In Its Molten State (AREA)

Claims (12)

  1. Vorrichtung zum Stranggießen eines metallischen Gegenstandes, mit zwei sich gegenläufig drehenden, achsparallelen Walzen (2, 3; 50, 51, 61), die mit vorgegebenem Abstand nebeneinander angeordnet sind und mit zwei feststehenden Seitenwänden (1, 40), die sich auf den axialen Enden der Walzen abstützen und dabei einen Gießraum (8, 58) zwischen den Walzen begrenzen, wobei jede zwei kreisförmige oder ringförmige Stützplatten (4, 5; 44, 45) aufweist, die im Reibkontakt mit einer ebenen Stirnfläche einer der beiden Enden einer der beiden Walzen (2, 3; 50, 51, 61) stehen und mit wenigstens einer zusätzlichen Wand (6, 56), die zwischen die beiden Platten (4, 5; 44, 45) und zwischen die Walzen (2, 3; 50, 51) eingesetzt ist, dadurch gekennzeichnet, daß jede der Stützplatten (4, 5; 44, 45) einer jeden Seitenwand eine Vielzahl von ringförmigen Sektoren (27a, 27b, 27c, 27d, 45a, 45b, ..., 45f) aufweist, die in Umfangsrichtung aufeinanderfolgen und relativ zueinander elastisch verformbar sind, derart, daß sie in Axialrichtung bezüglich der Walzen (2, 3; 50, 51, 61) während des Gießvorgangs verschiebbar sind.
  2. Vorrichtung nach Anspruch 1, dadurch gekennzeichnet, daß jede Stützplatte (4, 5; 44, 45) aus wenigstens einer ringförmigen metallischen Lamelle besteht, welche radial ausgerichtete Einschnitte (32a, 32b, 32c; 52, 53) aufweist entlang ihrer gesamten Dicke und entlang eines Abschnitts ihrer Breite in radialer Richtung, so daß elastische verformbare Sektoren (27a, 27b, 27c, 27d; 45a, ..., 45f) begrenzt werden.
  3. Vorrichtung nach Anspruch 2, dadurch gekennzeichnet, daß die Lamelle (25, 45) in ihrem radial eingeschnittenen Bereich eine Dicke aufweist, die kleiner ist als ihre Dicke in dem nicht eingeschnittenen Bereich, so daß ein Befestigungsansatz (26, 49) der Lamelle (25, 45) auf einer Halterung gebildet wird.
  4. Vorrichtung nach einem der Ansprüche 2 und 3, dadurch gekennzeichnet, daß der eingeschnittene Abschnitt der metallischen Lamelle (25, 45) derart unter Vorspannung steht, daß eine nach außen in Richtung zur Kontaktfläche mit der zugehörigen Walze (3, 51) gerichtete Wölbung der Lamelle (25, 45) entsteht.
  5. Vorrichtung nach einem der Ansprüche 2 bis 4, dadurch gekennzeichnet, daß die Lamellen (25, 45), welche die Stützplatten bilden, außerdem in Umfangsrichtung verlaufende Einschnitte (33a, 33b, 33c) über ihre gesamte Dicke aufweisen, welche die radialen Einschnitte (32a, 32b, 32c) schneiden.
  6. Vorrichtung nach einem der Ansprüche 1 bis 5, dadurch gekennzeichnet, daß die Stützplatten (4, 5; 44, 45) jeweils an einem gebogenen Plattenträger (10, 11; 42, 43) befestigt sind und sie durchsetzende Schmieröffnungen (29) aufweisen, die mit einer Aussparung zur Schmiermittelzufuhr im Inneren des zugehörigen Plattenträgers in Verbindung stehen und in einer Aussparung (31) in der mit dem Rand der Walze (3) in Verbindung stehenden Fläche (25a) der Stützplatte münden.
  7. Vorrichtung nach Anspruch 6, dadurch gekennzeichnet, daß die Stützplattenträger (10, 11) über ihre gesamte Länge eine Nut (21, 22) aufweisen, die sich über einen erheblichen Abschnitt ihrer Breite erstreckt in einer Ebene parallel zu den Flächen der Stützplatten (4, 5).
  8. Vorrichtung nach Anspruch 2, dadurch gekennzeichnet, daß die aufeinanderfolgenden verformbaren Sektoren (45a, ..., 45f) der metallischen Lamellen, welche die Stützplatten (44, 45) bilden, von außen nach innen und in Radialrichtung der Stützplatte eine Stützkufe (47) und eine flexible Lamelle (48) aufweisen, deren Dicke kleiner als die Dicke der Kufe (47) ist.
  9. Vorrichtung nach Anspruch 8, dadurch gekennzeichnet, daß die Kufen (47) zwei zueinander geneigte Flächen (47a, 47b) aufweisen, die einen spitzen Winkel miteinander einschließen, wobei eine der Flächen (47a) den Rand der zugehörigen Walze (50, 51) berührt und die andere Fläche (47b) die zusätzliche Wand (56) der Seitenwand (40) berührt.
  10. Vorrichtung nach Anspruch 9, dadurch gekennzeichnet, daß die zusätzliche Wand (56) einstückig ist und aus einem ersten feuerfesten Material besteht, daß wenigstens ein Teil (58, 59) aus einem zweiten feuerfesten Material an den flexiblen Lamellen (48) einer jeden Stützplatte anliegt, und daß eine Schicht (60) aus einem dritten feuerfesten Material zwischen der zusätzlichen Wand (56) und einerseits den Kufen (47) und andererseits dem Teil (58, 59) aus dem zweiten feuerfesten Material angeordnet ist, wobei das erste feuerfeste Material ein faserförmiges, thermisch isolierendes Material, das zweite feuerfeste Material ein hochisolierendes Material und das dritte feuerfeste Material ein elastisches Material ist.
  11. Vorrichtung nach Anspruch 10, dadurch gekennzeichnet, daß das erste feuerfeste Material aus Aluminiumoxidfasern besteht, welche mit Zirkondioxid imprägniert sind und daß das zweite Material aus einem schaumartigen Silikat besteht.
  12. Vorrichtung nach Anspruch 11, dadurch gekennzeichnet, daß die Innenfläche der verformbaren Sektoren der Stützplatten (4, 5), welche derjenigen Fläche der Sektoren gegenüberliegt, die die zugehörigen Walzen (2, 3) berührt, in Kontakt steht mit einem Abschnitt der Seitenwand 1, bestehend aus einem isolierenden, feuerfesten Material.
EP93470008A 1992-03-18 1993-03-02 Doppelrollen-Stranggiessvorrichtung zum Giessen von metallischen Produkten Expired - Lifetime EP0561724B1 (de)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
FR929203251A FR2688721B1 (fr) 1992-03-18 1992-03-18 Dispositif de coulee continue d'un produit metallique entre cylindres.
FR9203251 1992-03-18

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EP0561724A1 EP0561724A1 (de) 1993-09-22
EP0561724B1 true EP0561724B1 (de) 1996-10-30

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EP (1) EP0561724B1 (de)
AT (1) ATE144733T1 (de)
DE (2) DE69305673T2 (de)
DK (1) DK0561724T3 (de)
ES (1) ES2095619T3 (de)
FR (1) FR2688721B1 (de)
GR (1) GR3022406T3 (de)

Family Cites Families (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS60162557A (ja) * 1984-02-03 1985-08-24 Mitsubishi Heavy Ind Ltd 薄板連続鋳造装置
JPS6133736A (ja) * 1984-07-25 1986-02-17 Nippon Steel Corp 双ロ−ル型鋳造圧延機における短辺堰のバツクアツプ装置
FR2636259B1 (fr) * 1988-09-14 1994-03-11 Irsid Paroi laterale pour une installation de coulee continue entre parois mobiles et installation comportant cette paroi
US5027888A (en) * 1989-01-31 1991-07-02 Hitachi Zosen Corporation Method and apparatus for sealing molten metal for a twin-roll type continous casting apparatus
FR2666256B1 (fr) * 1990-09-03 1992-10-16 Usinor Sacilor Installation de coulee continue entre cylindres.

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ES2095619T3 (es) 1997-02-16
DE69305673D1 (de) 1996-12-05
ATE144733T1 (de) 1996-11-15
EP0561724A1 (de) 1993-09-22
GR3022406T3 (en) 1997-04-30
DE4308674A1 (de) 1993-09-23
DE69305673T2 (de) 1997-05-28
FR2688721A1 (fr) 1993-09-24
FR2688721B1 (fr) 1994-06-17
DK0561724T3 (da) 1997-04-01

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