EP1218127B1 - Casting roller - Google Patents
Casting roller Download PDFInfo
- Publication number
- EP1218127B1 EP1218127B1 EP00958036A EP00958036A EP1218127B1 EP 1218127 B1 EP1218127 B1 EP 1218127B1 EP 00958036 A EP00958036 A EP 00958036A EP 00958036 A EP00958036 A EP 00958036A EP 1218127 B1 EP1218127 B1 EP 1218127B1
- Authority
- EP
- European Patent Office
- Prior art keywords
- casting roll
- core
- casting
- ring
- supporting disk
- 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
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Classifications
-
- 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
-
- 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
- B22D11/0651—Casting wheels
Definitions
- the invention relates to a casting roll for a thin-strip casting plant, in particular for Continuous casting of thin strips of steel, having a substantially cylindrical core, with a sheath of copper or a copper alloy, optionally with the outside at least one coating is provided, with an internal cooling and with a Adjustment device for adjusting the outer contour of the casting roll in the end-side end regions thereof.
- a casting roll of this kind is known, for example, from EP-A-0 664 173.
- casting rolls of this type are found in the continuous casting of refractory metals, such as steel, Application.
- two casting rolls of this kind are arranged parallel to each other and rotated in opposite directions about their respective axes.
- the molten metal is in cast a gap defined between the casting rolls and upon contact with the Surfaces of the casting rollers provided with an internal cooling as well as when passing through the gap is cooled and solidified so that the metal in the form of a substantially solidified strip emerges from the casting gap.
- the tape thickness is determined by the width of the G fauxspaltes and the bandwidth through the length of the G fauxspaltes, the end of the casting End faces of the casting rolls adjacent sealing surfaces is limited determined.
- conically tapered in the casting rolls Provide piston.
- These conically tapered pistons are in two at each in the displaceable opposite ends of the casting roll arranged Kolbengleit till used, so that by moving the conically tapered piston in the axial direction the Outer circumferential surface of the casting roll under the wedge effect of the conically tapered piston is deformed.
- the pistons depending on the position in the Kolbengleitirriate at different points in the longitudinal direction of the casting roll Forces on the casting roll, i. the mantle of the casting roll, exercise, creating a exact compensation of Walzenballmaschine, if at all, is very difficult.
- the invention aims to avoid these disadvantages and difficulties and provides the task of creating a casting roll of the type described above, with it manages to reduce thermal crowning with structurally simple means or to Complete balance.
- the casting roll for a continuous operation robust enough and be less susceptible to interference.
- the construction should be inexpensive to manufacture and ensure easy operation.
- a backing disk is known per se from US-A-5,613,546 for a casting roll, however engages this support disk directly on the shell of the casting roll and is not used to compensate of thermal crowning, but for centering the shell against the core.
- the ring is opposite to both the shell as also sealed to the core by means of a seal.
- This will be an absolute Tightness of the internal cooling of the casting roll ensured.
- Such a tightness is for example, in a construction according to JP-A - 60-27446 not readily given.
- the conically tapered pistons are within provided on the core and surrounded on the outside by the cooling system for the jacket. As a result, a widening of the shell by means of the piston causes a radial displacement of the Inlet and outlet pipes for the internal cooling of the jacket.
- the support disk on its outer peripheral surface with a Truncated cone surface, which at a counter-jaw surface, the ring at the inside peripheral surface is provided, is applied
- a structurally simple to manufacture and reliable embodiment is characterized characterized in that for adjusting the support disk in the longitudinal direction of the casting roll a Plural distributed in the outer periphery of the support disk arranged screws is provided, with which the support disk is adjustable relative to the core, wherein Advantageously, the screws are screwed into arranged at the core blind holes. in this connection the setting of the support discs is made before pouring.
- a further preferred embodiment is characterized in that the support disk adjustable by means of a ring nut relative to the core in the longitudinal direction of the casting roll is.
- the support disk relative to the core in Lengthwise of the casting roll hydraulically adjustable.
- the ring extends to a maximum of 75 mm from the front end in Longitudinal direction of the casting roll to the center, preferably up to 50 mm, in particular to 35 mm.
- the jacket has in its end-side end portions, in which a contact with given the ring, a thickness less than or equal to 50 mm.
- the Steel drum 1 and the core 1 is with passages for an axially zu- and ab classifiedbares Provided coolant.
- This core 1 is on the outside of a jacket 2 made of copper or surrounded a copper alloy, wherein the thickness of the jacket 3 between 40 and 45 mm lies.
- the jacket 2 has on the inside of coolant flowed through coolant channels 4, so that an intensive heat dissipation through the jacket 2 is possible.
- the length of the casting roll is about 1 to 2 m, casting rolls are currently preferred with Lengths from 1100 to 1600 mm built.
- the jacket is provided with a nickel or chromium coating 5. These Coating 5 also extends over the end faces 6 of the jacket.
- the front end areas 7 of the shell 2 protrude over the steel drum respectively core 1 in Longitudinal direction of the casting roll, u.zw. up to max. 75 mm, preferably less than 50 mm.
- a ring 8 rests on the jacket 2 on the inside, wherein between the outer circumferential surface 9 of the ring 8 and the jacket 2 a Seal 10 is provided, which is inserted into a circumferential groove 11 of the ring 8.
- the ring 8 by means of screws 12 in the axial direction of the casting roll on the core. 1 fixed and opposite the core 1 also by means of a seal 13, which in an annular groove 14th is inserted on an inner side surface 15 of the ring 8, sealed, so that coolant, which via the core 1 in the coolant channels 4 of the shell 2 and in turn back in the core 1 flows, is prevented from emerging from the casting roll.
- the directed to the rotation axis inner peripheral side 16 of the ring 8 is frustoconical, u.zw. tapered towards the center of the casting roll.
- Truncated cone surface 16 is an annular support plate 17 having an outer peripheral surface 18, which is also frustoconical, u.zw. opposite to the frusto-conical surface 16 of the Ring 8, designed, on.
- This support plate 17 is in the illustrated embodiment by means of several screwed in blind holes 19 of the core 1 screws 20 in Axial direction of the casting roll adjustable, causing it to a widening of the ring 8 and thus to a widening of the end-side end portion 7 of the shell 2 in the desired Scale comes.
- the screws 20 are in the vicinity of the outer periphery of the annular Support disc 17 provided to deflections or bulges of the support plate 17 to avoid.
- a particular advantage of the construction according to the invention is the fact that a Adjusting the profile of the casting roll generators depending on the planned and / or current casting or solidification conditions is made possible, so that the respective suitable or acceptable band thickness cross profile can be generated in the edge region can, without complex processes of machining, such as turning and Grinding, to require.
- a very hard thin Surface coating 5 e.g. a chromium layer on the shell 2
- this is of great Advantage since each cutting profile adjustment also a new coating of the shell 2 would require.
- a cutting profile adjustment would also be Plant downtime required to perform the necessary casting roll changes to be able to.
- several G manwalzencrue would be kept in stock. According to the invention thus lower investment and storage costs and a result lower proportion of system downtime.
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- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Continuous Casting (AREA)
- Rolls And Other Rotary Bodies (AREA)
- Molds, Cores, And Manufacturing Methods Thereof (AREA)
Description
Die Erfindung betrifft eine Gießwalze für eine Dünnband-Gießanlage, insbesondere zum Stranggießen von dünnen Bändern aus Stahl, mit einem im wesentlichen zylindrischen Kern, mit einem Mantel aus Kupfer oder einer Kupferlegierung, der gegebenenfalls außenseitig mit mindestens einer Beschichtung versehen ist, mit einer Innenkühlung sowie mit einer Einstelleinrichtung zum Einstellen der Außenkontur der Gießwalze in deren Stimseiten-Endbereichen.The invention relates to a casting roll for a thin-strip casting plant, in particular for Continuous casting of thin strips of steel, having a substantially cylindrical core, with a sheath of copper or a copper alloy, optionally with the outside at least one coating is provided, with an internal cooling and with a Adjustment device for adjusting the outer contour of the casting roll in the end-side end regions thereof.
Eine Gießwalze dieser Art ist beispielsweise aus der EP-A - 0 664 173 bekannt. Gießwalzen dieser Art finden zum Stranggießen hochschmelzender Metalle, wie beispielsweise Stahl, Anwendung. Hierbei werden zwei Gießwalzen dieser Art parallel zueinander angeordnet und um ihre jeweiligen Achsen gegensinnig in Drehung versetzt. Die Metallschmelze wird in einen zwischen den Gießwalzen definierten Spalt gegossen und beim Kontakt mit den Oberflächen der mit einer Innenkühlung versehenen Gießwalzen sowie beim Durchlaufen des Spalts gekühlt und verfestigt, so daß das Metall in Form eines im wesentlichen durcherstarrten Bandes aus dem Gießspalt austritt. Die Banddicke ist durch die Breite des Gießspaltes und die Bandbreite durch die Länge des Gießspaltes, der endseitig von an den Stirnseiten der Gießwalzen anliegenden Dichtflächen begrenzt ist, bestimmt.A casting roll of this kind is known, for example, from EP-A-0 664 173. casting rolls of this type are found in the continuous casting of refractory metals, such as steel, Application. Here, two casting rolls of this kind are arranged parallel to each other and rotated in opposite directions about their respective axes. The molten metal is in cast a gap defined between the casting rolls and upon contact with the Surfaces of the casting rollers provided with an internal cooling as well as when passing through the gap is cooled and solidified so that the metal in the form of a substantially solidified strip emerges from the casting gap. The tape thickness is determined by the width of the Gießspaltes and the bandwidth through the length of the Gießspaltes, the end of the casting End faces of the casting rolls adjacent sealing surfaces is limited determined.
Hierbei ergibt sich das Problem von Wölbungen der Oberflächen der Gießwalzen, d.h. ein Abweichen der Oberflächen der Gießwalzen von der gewünschten streng zylindrischen oder leicht balligen Form. Der Grund hierfür ist in thermisch bedingten Verformungen der Mäntel der hoch hitzebelasteten Gießwalzen zu sehen.Here, the problem arises of buckling of the surfaces of the casting rolls, i. one Diverge the surfaces of the casting rolls from the desired strictly cylindrical or slightly crowned shape. The reason for this is in thermally induced deformations of the coats to see the highly heat-loaded casting rolls.
Zur Verminderung der beim Stranggießen auftretenden Walzenballigkeit bzw. zur Regelung der Walzenballigkeit ist es bekannt (JP-A - 60-27446), in den Gießwalzen konisch verjüngte Kolben vorzusehen. Diese konisch verjüngten Kolben sind in zwei an jeweils in den entgegengesetzten Enden der Gießwalze angeordneten Kolbengleiträumen verschiebbar eingesetzt, so daß durch Verschieben des konisch verjüngten Kolbens in Axialrichtung die Außenumfangsfläche der Gießwalze unter der Keilwirkung des konisch verjüngten Kolbens verformt wird. Hierbei ist es jedoch nicht zu vermeiden, daß die Kolben je nach Stellung in den Kolbengleiträumen an unterschiedlichen Stellen in Längsrichtung der Gießwalze gesehen Kräfte auf die Gießwalze, d.h. den Mantel der Gießwalze, ausüben, wodurch ein exakter Ausgleich der Walzenballigkeit, wenn überhaupt, nur sehr schwierig möglich ist. To reduce the occurring during continuous casting Walzenballigkeit or for regulation the roll crowning is known (JP-A - 60-27446), conically tapered in the casting rolls Provide piston. These conically tapered pistons are in two at each in the displaceable opposite ends of the casting roll arranged Kolbengleiträumen used, so that by moving the conically tapered piston in the axial direction the Outer circumferential surface of the casting roll under the wedge effect of the conically tapered piston is deformed. However, it is unavoidable that the pistons, depending on the position in the Kolbengleiträumen at different points in the longitudinal direction of the casting roll Forces on the casting roll, i. the mantle of the casting roll, exercise, creating a exact compensation of Walzenballigkeit, if at all, is very difficult.
Aufgrund der hohen spezifischen Wärmeströme, die beim Dünnbandgießen beim Erstarrungsprozeß anfallen, kommt es insbesondere in den Stimseiten-Endbereichen der Gießwalzen zu besonderen thermischen Beanspruchungen (Dehnungen und Spannungen), wodurch es hier zu größeren Banddicken kommt als im Mittenbereich eines gegossenen Bandes. Anstatt des geforderten konkaven Profils weist das Band ein lokal erheblich konvex geformtes Profil auf. Man hat zwar versucht, durch eine Vorkompensation Abhilfe zu schaffen, u.zw. durch Bilden eines konkaven Gießwalzenprofiles, jedoch hat dies infolge der Abhängigkeit von der generell eingestellten Banddicke, der Gießgeschwindigkeit, der Badspiegelhöhe und sonstigen die Erstarrung und Wärmeabfuhr beeinflussenden Parametern, wie z.B. auch Stahlqualität, Temperatur der Schmelze etc., nur bedingt geholfen.Due to the high specific heat flows that occur during thin strip casting Solidification process occur, it comes in particular in the end-end areas of the Casting rollers for special thermal stresses (strains and stresses), which results in larger strip thicknesses than in the center area of a cast one Band. Instead of the required concave profile, the band has a locally considerably convex shaped profile. It has indeed tried to remedy by a precompensation create, u.zw. by forming a concave casting roll profile, but this is due to the Dependence on the generally set strip thickness, the casting speed, the Badspiegelhöhe and other affecting the solidification and heat dissipation Parameters, e.g. also steel quality, temperature of the melt, etc., only conditionally helped.
Aus der eingangs erwähnten EP-A - 0 664 173 ist es bekannt, die Stirnseiten-Endbereiche des Mantels der Gießwalze über ringförmige, hohl ausgebildete Stützkörper am Kern abzustützen und durch die Hohlräume der ringförmigen Hohlkörper heißes Wasser durchzuleiten, so daß hierdurch bedingte Wärmedehnungen auf den Mantel übertragen werden und diesen auf das gewünschte Profil verformen. Durch eine Konstruktion dieser Art gestaltet sich die Gießwalze jedoch sehr aufwendig, zumal es notwendig ist, zwei unterschiedliche Wasserkreisläufe vorzusehen, nämlich einmal den Heißwasserkreislauf für den Ausgleich der thermisch bedingten Verformungen und einmal einen Kühlwasserkreislauf zur Wärmeabfuhr der vom erstarrenden Metall abgegebenen Wärme. Eine Gießwalze dieser Art ist dementsprechend teuer und für einen rauhen Stahlwerks-Gießbetrieb risikoreich.From the above-mentioned EP-A - 0 664 173 it is known the end-side end portions the shell of the casting roll via annular, hollow support body formed on the core support and through the cavities of the annular hollow body hot water pass through, so that thereby transferred thermal expansions on the mantle and deform it to the desired profile. By a construction of this kind However, the casting roll designed very expensive, especially since it is necessary two provide different water circuits, namely once the hot water cycle for the compensation of thermally induced deformations and once a Cooling water circuit for heat dissipation of the heat released by the solidifying metal. A casting roll of this type is accordingly expensive and for a rough steel mill casting operation risky.
Die Erfindung bezweckt die Vermeidung dieser Nachteile und Schwierigkeiten und stellt sich die Aufgabe, eine Gießwalze der eingangs beschriebenen Art zu schaffen, mit der es gelingt, thermische Balligkeiten mit konstruktiv einfachen Mitteln zu reduzieren bzw. zur Gänze auszugleichen. Insbesondere soll die Gießwalze für einen Dauerbetrieb robust genug und wenig störanfällig sein. Zudem soll die Konstruktion kostengünstig herzustellen sein und einen einfachen Betrieb gewährleisten.The invention aims to avoid these disadvantages and difficulties and provides the task of creating a casting roll of the type described above, with it manages to reduce thermal crowning with structurally simple means or to Complete balance. In particular, the casting roll for a continuous operation robust enough and be less susceptible to interference. In addition, the construction should be inexpensive to manufacture and ensure easy operation.
Diese Aufgabe wird bei einer Gießwalze der eingangs beschriebenen Art dadurch gelöst, daß die Einstelleinrichtung an jedem Stirnseiten-Endbereich der Gießwalze eine in Längsrichtung der Gießwalze verstellbare Stützscheibe aufweist, die an einem die Stützscheibe radial umgebenden und am Mantel jeweils an dessen Stirnseiten-Endbereichen innenseitig anliegenden Ring, der gegenüber dem Kern in Längsrichtung der Gießwalze unverrückbar fixiert ist, angreift. This object is achieved in a casting roll of the type described above in that the adjusting device at each end-side end portion of the casting roll a in Has longitudinal direction of the casting roll adjustable support disk, which at one the Supporting disk radially surrounding and the jacket respectively at the end-side end portions inside adjacent ring, opposite the core in the longitudinal direction of the casting roll is fixed immovably, attacks.
Eine Stützscheibe ist an sich aus der US-A-5,613,546 für eine Gießwalze bekannt, jedoch greift diese Stützscheibe direkt am Mantel der Gießwalze an und dient nicht zum Ausgleich von thermischen Balligkeiten, sondern zum Zentrieren des Mantels gegenüber dem Kern.A backing disk is known per se from US-A-5,613,546 for a casting roll, however engages this support disk directly on the shell of the casting roll and is not used to compensate of thermal crowning, but for centering the shell against the core.
Gemäß einer bevorzugten Ausführungsform ist der Ring sowohl gegenüber dem Mantel als auch gegenüber dem Kern mittels einer Dichtung abgedichtet. Hierdurch wird eine absolute Dichtheit der Innenkühlung der Gießwalze gewährleistet. Eine solche Dichtheit ist beispielsweise bei einer Konstruktion gemäß der JP-A - 60-27446 nicht ohne weiteres gegeben. Bei dieser bekannten Konstruktion sind die konisch verjüngten Kolben innerhalb des Kerns vorgesehen und außenseitig von dem Kühlsystem für den Mantel umgeben. Hierdurch bedingt ein Aufweiten des Mantels mittels der Kolben ein radiales Versetzen der Zu- und Ableitungen für die Innenkühlung des Mantels.According to a preferred embodiment, the ring is opposite to both the shell as also sealed to the core by means of a seal. This will be an absolute Tightness of the internal cooling of the casting roll ensured. Such a tightness is For example, in a construction according to JP-A - 60-27446 not readily given. In this known construction, the conically tapered pistons are within provided on the core and surrounded on the outside by the cooling system for the jacket. As a result, a widening of the shell by means of the piston causes a radial displacement of the Inlet and outlet pipes for the internal cooling of the jacket.
Vorzugsweise ist die Stützscheibe an ihrer außenseitigen Umfangsfläche mit einer Kegelstumpffläche versehen, die an einer Gegenkegelstumpffläche, die am Ring an dessen innenseitiger Umfangsfläche vorgesehen ist, anliegtPreferably, the support disk on its outer peripheral surface with a Truncated cone surface, which at a counter-jaw surface, the ring at the inside peripheral surface is provided, is applied
Eine konstruktiv einfach herzustellende und betriebssichere Ausführungsform ist dadurch gekennzeichnet, daß zur Verstellung der Stützscheibe in Längsrichtung der Gießwalze eine Mehrzahl in Außenumfangsnähe der Stützscheibe verteilt angeordnete Schrauben vorgesehen ist, mit denen die Stützscheibe gegenüber dem Kern verstellbar ist, wobei vorteilhaft die Schrauben in am Kern angeordneten Sacklöchern eingeschraubt sind. Hierbei wird die Einstellung der Stützscheiben vor Gießbeginn vorgenommen.A structurally simple to manufacture and reliable embodiment is characterized characterized in that for adjusting the support disk in the longitudinal direction of the casting roll a Plural distributed in the outer periphery of the support disk arranged screws is provided, with which the support disk is adjustable relative to the core, wherein Advantageously, the screws are screwed into arranged at the core blind holes. in this connection the setting of the support discs is made before pouring.
Eine weitere bevorzugte Ausführungsform ist dadurch gekennzeichnet, daß die Stützscheibe mittels einer Ringmutter gegenüber dem Kern in Längsrichtung der Gießwalze verstellbar ist.A further preferred embodiment is characterized in that the support disk adjustable by means of a ring nut relative to the core in the longitudinal direction of the casting roll is.
Um eine Verstellung während des Bandgießens vornehmen zu können, ist gemäß einer anderen bevorzugten Ausführungsform die Stützscheibe gegenüber dem Kern in Längsrichtung der Gießwalze hydraulisch verstellbar.To make an adjustment during the strip casting is, according to a Another preferred embodiment, the support disk relative to the core in Lengthwise of the casting roll hydraulically adjustable.
Zweckmäßig erstreckt sich der Ring bis maximal 75 mm vom Stirnendbereich in Längsrichtung der Gießwalze zu deren Zentrum, vorzugsweise bis 50 mm, insbesondere bis 35 mm. Suitably, the ring extends to a maximum of 75 mm from the front end in Longitudinal direction of the casting roll to the center, preferably up to 50 mm, in particular to 35 mm.
Vorzugsweise weist der Mantel in seinen Stirnseiten-Endbereichen, in denen ein Kontakt mit dem Ring gegeben ist, eine Dicke geringer als oder gleich 50 mm auf.Preferably, the jacket has in its end-side end portions, in which a contact with given the ring, a thickness less than or equal to 50 mm.
Die Erfindung ist nachfolgend anhand eines in der Zeichnung dargestellten Ausführungsbeispieles näher erläutert, wobei die in der Zeichnung enthaltene Figur einen Axialschnitt durch eine Gießwalze veranschaulicht.The invention is described below with reference to an illustrated in the drawing Embodiment explained in more detail, wherein the figure contained in the drawing a Axial section through a casting roller illustrated.
Mit 1 ist eine Stahltrommel bezeichnet, die den Kern der Gießwalze bildet. Die Stahltrommel 1 bzw. der Kern 1 ist mit Durchlässen für ein axial zu- und abführbares Kühlmittel versehen. Dieser Kern 1 ist außenseitig von einem Mantel 2 aus Kupfer oder einer Kupferlegierung umgeben, wobei die Dicke 3 des Mantels zwischen 40 und 45 mm liegt. Der Mantel 2 weist innenseitig von Kühlmittel durchströmte Kühlmittelkanäle 4 auf, so daß eine intensive Wärmeabfuhr über den Mantel 2 möglich ist.1 denotes a steel drum which forms the core of the casting roll. The Steel drum 1 and the core 1 is with passages for an axially zu- and abführbares Provided coolant. This core 1 is on the outside of a jacket 2 made of copper or surrounded a copper alloy, wherein the thickness of the jacket 3 between 40 and 45 mm lies. The jacket 2 has on the inside of coolant flowed through coolant channels 4, so that an intensive heat dissipation through the jacket 2 is possible.
Die Länge der Gießwalze beträgt etwa 1 bis 2 m, bevorzugt werden derzeit Gießwalzen mit Längen von 1100 bis 1600 mm gebaut.The length of the casting roll is about 1 to 2 m, casting rolls are currently preferred with Lengths from 1100 to 1600 mm built.
Außenseitig ist der Mantel mit einer Nickel- oder Chrombeschichtung 5 versehen. Diese
Beschichtung 5 erstreckt sich auch über die Stirnseiten 6 des Mantels. Die Stirnseiten-Endbereiche
7 des Mantels 2 ragen über die Stahltrommel respektive Kern 1 in
Längsrichtung der Gießwalze hinaus, u.zw. um bis zu max. 75 mm, vorzugsweise weniger
als 50 mm. In diesem auskragenden Bereich 7 liegt am Mantel 2 innenseitig ein Ring 8 an,
wobei zwischen der außenseitigen Umfangsfläche 9 des Ringes 8 und dem Mantel 2 eine
Dichtung 10 vorgesehen ist, die in eine Umfangsnut 11 des Ringes 8 eingesetzt ist.On the outside, the jacket is provided with a nickel or chromium coating 5. These
Coating 5 also extends over the end faces 6 of the jacket. The front end areas
7 of the shell 2 protrude over the steel drum respectively core 1 in
Longitudinal direction of the casting roll, u.zw. up to max. 75 mm, preferably less
than 50 mm. In this projecting region 7, a
Weiters ist der Ring 8 mittels Schrauben 12 in axialer Richtung der Gießwalze am Kern 1
fixiert und gegenüber dem Kern 1 ebenfalls mittels einer Dichtung 13, die in eine Ringnut 14
an einer Innen-Seitenfläche 15 des Ringes 8 eingesetzt ist, gedichtet, so daß Kühlmittel,
welches über den Kern 1 in die Kühlmittelkanäle 4 des Mantels 2 und wiederum zurück in
den Kern 1 strömt, am Austreten aus der Gießwalze gehindert ist.Furthermore, the
Die zur Drehachse gerichtete Innen-Umfangsseite 16 des Ringes 8 ist kegelstumpfförmig,
u.zw. in Richtung zum Zentrum der Gießwalze sich verjüngend, gestaltet. An dieser
Kegelstumpffläche 16 liegt eine ringförmige Stützscheibe 17 mit einer Außenumfangsfläche
18, die ebenfalls kegelstumpfförmig, u.zw. gegengleich zur Kegelstumpffläche 16 des
Ringes 8, gestaltet ist, an. Diese Stützscheibe 17 ist beim dargestellten Ausführungsbeispiel
mittels mehrerer, in Sacklöchern 19 des Kernes 1 eingeschraubter Schrauben 20 in
Achsrichtung der Gießwalze verstellbar, wodurch es zu einer Aufweitung des Ringes 8 und
damit zu einer Aufweitung des Stirnseiten-Endbereiches 7 des Mantels 2 im gewünschten
Ausmaß kommt. Die Schrauben 20 sind in der Nähe des Außenumfanges der ringförmigen
Stützscheibe 17 vorgesehen, um Durchbiegungen bzw. Beulungen der Stützscheibe 17 zu
vermeiden.The directed to the rotation axis inner
Wie sich unmittelbar aus dieser beschriebenen und dargestellten Konstruktion ergibt, wird
beim Verschieben bzw. Verstellen der Stützscheibe 17 der an dieser anliegende Ring 8
lediglich ausgeweitet, ohne jedoch seine axiale Lage gegenüber dem Kern 1 zu verändern.
Um ein Ausweiten, d.h. Dehnen in radialer Richtung bzw. Umfangsrichtung des Ringes 8 zu
gewährleisten, sind die Schrauben 20, mit denen der Ring am Kern 1 befestigt ist, nur so
weit angezogen, daß eine Dichtheit zwischen dem Ring 8 und dem Kern 1 gewährleistet ist,
jedoch bei größerer Krafteinwirkung ein Gleiten der Innen-Seitenfläche 15 des Ringes 8, die
an der außenseitigen Stirnfläche des Kerns 1 anliegt, möglich ist.As will be apparent from this described and illustrated construction, will
when moving or adjusting the
Ein besonderer Vorteil der erfindungsgemäßen Konstruktion ist darin zu sehen, daß eine Einstellung des Profiles der Gießwalzen-Erzeugenden in Abhängigkeit der geplanten und/oder aktuellen Gieß- bzw. Erstarrungsbedingungen ermöglicht wird, so daß das jeweils passende bzw. noch akzeptable Banddicken-Querprofil im Kantenbereich erzeugt werden kann, ohne aufwendige Verfahren einer zerspanenden Bearbeitung, wie Drehen und Schleifen, zu erfordern. Insbesondere im Fall einer sehr harten dünnen Oberflächenbeschichtung 5, wie z.B. einer Chromschicht am Mantel 2, ist dies von großem Vorteil, da jede zerspanende Profileinstellung auch eine neue Beschichtung des Mantels 2 erforderlich machen würde. Im Falle einer zerspanenden Profileinstellung wären zudem Anlagenstillstandszeiten erforderlich, um die notwendigen Gießwalzenwechsel durchführen zu können. Zudem wären auch mehrere Gießwalzenpaare auf Lager zu halten. Erfindungsgemäß ergeben sich somit geringere Investitions- und Lagerkosten sowie ein geringerer Anteil an Anlagenstillstandszeiten.A particular advantage of the construction according to the invention is the fact that a Adjusting the profile of the casting roll generators depending on the planned and / or current casting or solidification conditions is made possible, so that the respective suitable or acceptable band thickness cross profile can be generated in the edge region can, without complex processes of machining, such as turning and Grinding, to require. Especially in the case of a very hard thin Surface coating 5, e.g. a chromium layer on the shell 2, this is of great Advantage, since each cutting profile adjustment also a new coating of the shell 2 would require. In the case of a cutting profile adjustment would also be Plant downtime required to perform the necessary casting roll changes to be able to. In addition, several Gießwalzenpaare would be kept in stock. According to the invention thus lower investment and storage costs and a result lower proportion of system downtime.
Claims (9)
- A casting roll for a thin strip casting plant, in particular for the continuous casting of thin strips of steel, comprising an essentially cylindrical core (1), a mantle (2) of copper or a copper alloy optionally being provided with at least one outside layer (5), an internal cooling system (4) as well as an adjusting means (8, 17, 20) for adjusting the outline of the casting roll in its front-end regions (7), characterized in that the adjusting means has in each front-end region of the casting roll a supporting disk (17) adjustable in the longitudinal direction of the casting roll and engaging a ring (8) radially surrounding the supporting disk (17) and abutting the mantle (2) from the inside in its front-end regions, which ring is fixedly attached with regard to the core (1) in the longitudinal direction of the casting roll.
- A casting roll according to claim 1, characterized in that the ring (8) is sealed against the mantle (2) as well as the core (1) by means of a gasket (10, 13).
- A casting roll according to claim 1 or 2, characterized in that, in its outer circumferential surface, the supporting disk (17) is furnished with a frustoconical surface (18) abutting a counter-frustoconical surface provided at the ring (8) in its inner circumferential surface (16).
- A casting roll according to one or several of claims 1 to 3, characterized in that, for the adjustment of the supporting disk (17) in the longitudinal direction of the casting roll, a plurality of bolts (20) distributed close to the outer circumference of the supporting disk (17) is provided, by the aid of which bolts the supporting disk (17) is adjustable against the core (1).
- A casting roll according to claim 4, characterized in that bolts (20) are screwed into blind holes (19) arranged at the core (1).
- A casting roll according to one or several of claims 1 to 3, characterized in that the supporting disk (17) is adjustable by means of a ring nut against the core (1) in the longitudinal direction of the casting roll.
- A casting roll according to one or several of claims 1 to 3, characterized in that the supporting disk (17) is hydraulically adjustable against the core (1) in the longitudinal direction of the casting roll.
- A casting roll according to one or several of claims 1 to 7, characterized in that the ring (8) extends up to a maximum of 75 mm from the front-end region in the longitudinal direction of the casting roll to its center, preferably up to 50 mm, in particular up to 35 mm.
- A casting roll according to one or several of claims 1 to 8, characterized in that the mantle (2) has a thickness less than or equal to 50 mm in its front-end regions (7), where contact with the ring (8) occurs.
Priority Applications (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| SI200030175T SI1218127T1 (en) | 1999-09-06 | 2000-08-30 | Casting roller |
| AT00958036T ATE245067T1 (en) | 1999-09-06 | 2000-08-30 | CASTING ROLLER |
Applications Claiming Priority (3)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| AT0152799A AT408199B (en) | 1999-09-06 | 1999-09-06 | CASTING ROLLER |
| AT152799 | 1999-09-06 | ||
| PCT/AT2000/000234 WO2001017712A1 (en) | 1999-09-06 | 2000-08-30 | Casting roller |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| EP1218127A1 EP1218127A1 (en) | 2002-07-03 |
| EP1218127B1 true EP1218127B1 (en) | 2003-07-16 |
Family
ID=3515499
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| EP00958036A Expired - Lifetime EP1218127B1 (en) | 1999-09-06 | 2000-08-30 | Casting roller |
Country Status (22)
| Country | Link |
|---|---|
| US (1) | US6619375B2 (en) |
| EP (1) | EP1218127B1 (en) |
| JP (1) | JP2003508228A (en) |
| KR (1) | KR20020063850A (en) |
| CN (1) | CN1372498A (en) |
| AT (1) | AT408199B (en) |
| AU (1) | AU773091B2 (en) |
| BR (1) | BR0013795A (en) |
| CA (1) | CA2383986A1 (en) |
| CZ (1) | CZ2002821A3 (en) |
| DE (1) | DE50002926D1 (en) |
| DK (1) | DK1218127T3 (en) |
| ES (1) | ES2203507T3 (en) |
| MX (1) | MXPA02002348A (en) |
| PL (1) | PL355506A1 (en) |
| RU (1) | RU2229954C2 (en) |
| SK (1) | SK3312002A3 (en) |
| TR (1) | TR200200574T2 (en) |
| TW (1) | TW470676B (en) |
| UA (1) | UA69487C2 (en) |
| WO (1) | WO2001017712A1 (en) |
| ZA (1) | ZA200201805B (en) |
Families Citing this family (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| IT1316320B1 (en) * | 2000-02-01 | 2003-04-10 | Ohg Bruno Presezzi S R L | CONTINUOUS CASTING ROLLER, ESPECIALLY FOR THE PRODUCTION OF ALUMINUM OR ALUMINUM ALLOY TAPES. |
| DE10202523B4 (en) * | 2002-01-24 | 2006-03-02 | Fag Kugelfischer Ag & Co. Ohg | Rolling bearing arrangement for rolls in continuous casting plants |
| US8607848B2 (en) * | 2008-08-05 | 2013-12-17 | Nucor Corporation | Method for casting metal strip with dynamic crown control |
| KR101050804B1 (en) * | 2009-09-17 | 2011-07-20 | 주식회사 포스코 | Compacted material manufacturing apparatus and molten iron manufacturing apparatus including the same |
| US8505611B2 (en) | 2011-06-10 | 2013-08-13 | Castrip, Llc | Twin roll continuous caster |
| CN107081410A (en) * | 2017-04-25 | 2017-08-22 | 王宇 | One kind rotation chill roll and its cooling means |
| CN110000350A (en) * | 2019-05-21 | 2019-07-12 | 一重集团大连工程技术有限公司 | A kind of casting crystallization roll |
Family Cites Families (11)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS6027446A (en) * | 1983-07-22 | 1985-02-12 | Ishikawajima Harima Heavy Ind Co Ltd | Roll for casting |
| JPS60127007A (en) * | 1983-12-14 | 1985-07-06 | Kawasaki Steel Corp | Sheet material rolling device equipped with sleeved roll |
| JPH07121440B2 (en) * | 1987-11-19 | 1995-12-25 | 株式会社日立製作所 | Twin roll type continuous casting machine |
| JPH0787970B2 (en) * | 1988-07-28 | 1995-09-27 | 日新製鋼株式会社 | Thin plate continuous casting machine |
| DE3836886A1 (en) * | 1988-10-29 | 1990-05-03 | Wiegard Gustav Maschbau | Liquid-cooled roller for continuous casting installations |
| JPH03142008A (en) * | 1989-10-27 | 1991-06-17 | Sumitomo Metal Ind Ltd | Roll for adjusting crown |
| FR2672523B1 (en) * | 1991-02-13 | 1995-04-21 | Usinor Sacilor | CONTINUOUS CASTING CYLINDER FUEL. |
| FR2711561B1 (en) * | 1993-10-27 | 1996-03-29 | Usinor Sacilor | Casting cylinder of a continuous casting installation on one or between two cylinders. |
| JPH07204792A (en) * | 1994-01-24 | 1995-08-08 | Mitsubishi Heavy Ind Ltd | Twin roll type continuous casting apparatus |
| AUPN053695A0 (en) * | 1995-01-13 | 1995-02-09 | Bhp Steel (Jla) Pty Limited | Casting roll |
| FR2745510B1 (en) * | 1996-02-29 | 1998-05-22 | Usinor Sacilor | CASTING CYLINDER OF A CONTINUOUS CASTING PLANT ON ONE OR BETWEEN TWO CYLINDERS |
-
1999
- 1999-09-06 AT AT0152799A patent/AT408199B/en not_active IP Right Cessation
-
2000
- 2000-08-30 KR KR1020027002984A patent/KR20020063850A/en not_active Application Discontinuation
- 2000-08-30 AU AU69726/00A patent/AU773091B2/en not_active Ceased
- 2000-08-30 CA CA002383986A patent/CA2383986A1/en not_active Abandoned
- 2000-08-30 CZ CZ2002821A patent/CZ2002821A3/en unknown
- 2000-08-30 BR BR0013795-2A patent/BR0013795A/en active Search and Examination
- 2000-08-30 RU RU2002108703/02A patent/RU2229954C2/en not_active IP Right Cessation
- 2000-08-30 EP EP00958036A patent/EP1218127B1/en not_active Expired - Lifetime
- 2000-08-30 WO PCT/AT2000/000234 patent/WO2001017712A1/en not_active Application Discontinuation
- 2000-08-30 SK SK331-2002A patent/SK3312002A3/en unknown
- 2000-08-30 TR TR2002/00574T patent/TR200200574T2/en unknown
- 2000-08-30 PL PL00355506A patent/PL355506A1/en unknown
- 2000-08-30 CN CN00812497A patent/CN1372498A/en active Pending
- 2000-08-30 DK DK00958036T patent/DK1218127T3/en active
- 2000-08-30 UA UA2002042682A patent/UA69487C2/en unknown
- 2000-08-30 MX MXPA02002348A patent/MXPA02002348A/en not_active Application Discontinuation
- 2000-08-30 ES ES00958036T patent/ES2203507T3/en not_active Expired - Lifetime
- 2000-08-30 DE DE50002926T patent/DE50002926D1/en not_active Expired - Lifetime
- 2000-08-30 JP JP2001521489A patent/JP2003508228A/en not_active Withdrawn
- 2000-09-01 TW TW089117917A patent/TW470676B/en not_active IP Right Cessation
-
2002
- 2002-03-01 US US10/085,019 patent/US6619375B2/en not_active Expired - Fee Related
- 2002-03-05 ZA ZA200201805A patent/ZA200201805B/en unknown
Also Published As
| Publication number | Publication date |
|---|---|
| JP2003508228A (en) | 2003-03-04 |
| ZA200201805B (en) | 2002-12-24 |
| WO2001017712A1 (en) | 2001-03-15 |
| CZ2002821A3 (en) | 2002-08-14 |
| AT408199B (en) | 2001-09-25 |
| PL355506A1 (en) | 2004-05-04 |
| US20020112841A1 (en) | 2002-08-22 |
| MXPA02002348A (en) | 2002-08-12 |
| DE50002926D1 (en) | 2003-08-21 |
| CA2383986A1 (en) | 2001-03-15 |
| AU773091B2 (en) | 2004-05-13 |
| RU2229954C2 (en) | 2004-06-10 |
| CN1372498A (en) | 2002-10-02 |
| TR200200574T2 (en) | 2002-09-23 |
| EP1218127A1 (en) | 2002-07-03 |
| UA69487C2 (en) | 2004-09-15 |
| KR20020063850A (en) | 2002-08-05 |
| ATA152799A (en) | 2001-02-15 |
| BR0013795A (en) | 2002-05-14 |
| SK3312002A3 (en) | 2002-12-03 |
| TW470676B (en) | 2002-01-01 |
| DK1218127T3 (en) | 2003-11-10 |
| US6619375B2 (en) | 2003-09-16 |
| AU6972600A (en) | 2001-04-10 |
| ES2203507T3 (en) | 2004-04-16 |
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