EP0906162A1 - Strip casting plant - Google Patents

Strip casting plant

Info

Publication number
EP0906162A1
EP0906162A1 EP97926984A EP97926984A EP0906162A1 EP 0906162 A1 EP0906162 A1 EP 0906162A1 EP 97926984 A EP97926984 A EP 97926984A EP 97926984 A EP97926984 A EP 97926984A EP 0906162 A1 EP0906162 A1 EP 0906162A1
Authority
EP
European Patent Office
Prior art keywords
support element
casting plant
casting
belt
plant according
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Granted
Application number
EP97926984A
Other languages
German (de)
French (fr)
Other versions
EP0906162B1 (en
Inventor
Klaus Schwerdtfeger
Karl-Heinz Spitzer
Ulrich Urlau
Dietmar Franke
Bernfried Stache
Joachim Kroos
Heino Buddenberg
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.)
Salzgitter AG
SMS Siemag AG
Original Assignee
Salzgitter AG
Mannesmann AG
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.)
Filing date
Publication date
Priority claimed from DE19636699A external-priority patent/DE19636699C2/en
Application filed by Salzgitter AG, Mannesmann AG filed Critical Salzgitter AG
Publication of EP0906162A1 publication Critical patent/EP0906162A1/en
Application granted granted Critical
Publication of EP0906162B1 publication Critical patent/EP0906162B1/en
Anticipated expiration legal-status Critical
Expired - Lifetime legal-status Critical Current

Links

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
    • B22D11/0637—Accessories therefor
    • B22D11/0694—Accessories therefor for peeling-off or removing the cast product
    • 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
    • B22D11/0631—Continuous casting of metals, i.e. casting in indefinite lengths into moulds with travelling walls, e.g. with rolls, plates, belts, caterpillars formed by a travelling straight surface, e.g. through-like moulds, a belt

Abstract

A casting plant is disclosed, in particular for steel strips. The cast steel strip must be supported, in particular after passing through the casting device, to reduce stresses and mechanical deformation. A flexible supporting element, in particular a roller chain whose length may be modified by appropriate adjusting means, is provided for this purpose after the casting device.

Description

BaπdgießanlageBand casting plant
Beschreibungdescription
Die Erfindung betrifft eine Bandgießanlage, insbesondere für das Vergießen von metallischen Bändern, speziell aus Stahl.The invention relates to a strip caster, in particular for casting metallic strips, especially made of steel.
Auf der Gießanlage vergossene Stahlbänder weisen bevorzugt eine Dicke von bis zu 10 mm auf.Steel strips cast on the casting plant preferably have a thickness of up to 10 mm.
Eine Gießaniage für das Vergießen von insbesondere Stahlschmelzen ist in DE 34 23 834 C2 beschrieben. Aus einem Vorratsbehälter gelangt der flüssige Stahl durch eine Düse auf ein endlos umlaufendes, gekühltes und durch Rollen gestütztes Band. Das erstarrte Band wird durch Fördereinrichtungen einer nachfolgenden Anlage zur Weiterverarbeitung, insbesondere Walzung gefuhrt. Das erstarrte Band ist noch relativ weich und sollte jedenfalls unmittelbar nach dem Vergießen, also zum Beispiel nach dem Verlassen des umlaufenden Bandes, der Gießmaschine nicht auf Biegung beansprucht werden. Außerdem bestehen zwischen Bandinnerem und Bandoberfläche noch erhebliche Temperaturdifferenzen.A casting system for casting steel melts in particular is described in DE 34 23 834 C2. The liquid steel flows from a storage container through a nozzle onto an endlessly circulating, cooled belt that is supported by rollers. The solidified strip is passed through conveyors of a subsequent plant for further processing, in particular rolling. The solidified belt is still relatively soft and should in any case not be subjected to bending immediately after casting, for example after leaving the rotating belt, of the casting machine. There are also considerable temperature differences between the inside of the strip and the surface of the strip.
Aufgabe der Erfindung war es, in dem vergossenen Band thermische und mechanische Spannungen zu verringern Erfindungsgemäß ist daher vorgesehen, in einer an die Gießanlage anschließenden Anordnung ein flexibles Stützelement anzubringen. Das flexible Stützelement ist insbesondere zwischen Gießanlage und einer nachfolgenden Fördereinrichtung gespannt. Durch das flexible Stützelement werden die durch die Schwerkraft hervorgerufenen Vertikalkräfte aufgenommen. Hierzu ist die Länge des Stütz- und Führelementes einstellbar. Als flexibles Element können zum Beispiel gespannte Stahlbänder verwendet werden, die insbesondere auf Rollen gelagert sein können, wobei die Rollen mitlaufend oder synchron zu den Fördereinrichtungen angetrieben sein können. Bei mitlaufendem Stützelement können vorteilhaft die Bandzugkräfte minimiert werden. Dazu wird der Antrieb geregelt. Nach einer bevorzugten Ausfuhrung besteht das flexible Stutzelement aus einer Gliederkette nach Art einer Fahrradkette, wobei in Richtung der Bandbreite mehrere Ketten nebeneinander angeordnet sind oder diese so miteinander verflochten sind daß sie eine hinreichend große Auflageflache bietenThe object of the invention was to reduce thermal and mechanical stresses in the cast band. According to the invention, a flexible support element is therefore provided in an arrangement adjoining the casting installation. The flexible support element is stretched in particular between the casting plant and a subsequent conveyor. The flexible support element absorbs the vertical forces caused by gravity. For this purpose, the length of the support and guide element is adjustable. Tensioned steel belts can be used as a flexible element, for example, which can in particular be mounted on rollers, wherein the rollers can be driven simultaneously or synchronously with the conveying devices. With the support element running along, the strip tensile forces can advantageously be minimized. The drive is controlled for this. According to a preferred embodiment, the flexible support element consists of a link chain in the manner of a bicycle chain, several chains being arranged next to one another in the direction of the bandwidth or these being interwoven with one another in such a way that they offer a sufficiently large contact surface
Nach einer weiter bevorzugten Ausfuhrung weist das flexible Stutzelement, also insbesondere die Kette, Rollelemente auf. Diese Rollelemente können als in Baπdforderπchtung umlaufende Rollen oder kugelförmige Elemente ausgebildet sein Auch bei diesen Ausführungen kommt es vor allen Dingen darauf an, die Vertikalkrafte aufzunehmen und einen möglichst reibungslosen Transport in Forderrichtung des vergossenen Bandes zu gewährleisten Die Rollelemente sind bevorzugt mitdrehend und/oder abschnittsweise in Bandlangsnchtung angetrieben, um Zug- und Druckspannungen im unterstutzten Bereich zu vermeidenAccording to a further preferred embodiment, the flexible support element, in particular the chain, has rolling elements. These rolling elements can be designed as rollers or spherical elements rotating in the form of a roll. With these designs as well, the most important thing is to absorb the vertical forces and to ensure as smooth a transport as possible in the direction of movement of the cast tape. The rolling elements are preferably rotating and / or in sections Longitudinal belt driven to avoid tensile and compressive stress in the supported area
Nach einer weiter bevorzugten Ausfuhrung sind an dem flexiblen Stutzelemeπt, also insbesondere dem unterstutzten Band oder der bevorzugten Kette mit Rollelementen, Stelleinrichtungen zur Einstellung der Spannung des flexiblen Stutzelementes in dessen Längsrichtung angeordnet Hierdurch kann die Hangekurve und damit die Lange der durch das flexible Stutzelement unterstützten Strecke eingestellt werden Dadurch wird neben der Unterstützung des Bandes und der Verringerung der Spannungen im vergossenen Band besonders vorteilhaft noch erreicht, daß ein Ausgleich von unterschiedlichen Umdrehungsgeschwindigkeiten der Fördereinrichtungen (Forderrollen) ermöglicht wird. Das flexible Stutzelement fungiert daher auch als Puffer zur Einstellung des Bandzuges Wenn die nachfolgende Fordereinrichtung relativ zur vorhergehenden eine höhere Geschwindigkeit aufweist, kann durch Verkürzung des flexiblen Stutzelemtes und gleichzeitige Verringerung der Geschwindigkeit der nachfolgenden Forderrolle der Bandzug ausgeglichen werden Umgekehrt kann bei zu niedriger Geschwindigkeit der nachfolgenden Forderrolle die Spannung am flexiblen Stützelement verringert, die unterstutzte Lange damit vergrößert und gleichzeitig die Geschwindigkeit der nachfolgenden Forderrolle erhöht werden Bevorzugt wird die unterstutzte Lange des flexiblen Stutzelemeπtes durch Stelleinrichtungen verändert, die in Verbindung mit geeigneten Meß- und Verarbeituπgseinπchtungen nach dem Drehmoment der mitlaufenden Rolle an der Gießanlage geregelt einstellbar sindAccording to a further preferred embodiment, adjusting devices for adjusting the tension of the flexible support element in its longitudinal direction are arranged on the flexible support element, in particular the supported belt or the preferred chain with rolling elements. As a result, the slope curve and thus the length of the path supported by the flexible support element can be arranged As a result, in addition to supporting the belt and reducing the tension in the encapsulated belt, it is particularly advantageously achieved that a compensation of different rotational speeds of the conveying devices (conveyor rollers) is made possible. The flexible support element therefore also functions as a buffer for adjusting the belt tension.If the subsequent conveyor device has a higher speed relative to the previous one, the belt tension can be compensated for by shortening the flexible connector element and at the same time reducing the speed of the subsequent conveyor roller Conveyor roller reduces the tension on the flexible support element, thereby increasing the supported length and at the same time increasing the speed of the subsequent conveyor roller The supported length of the flexible support element is preferably changed by adjusting devices which, in conjunction with suitable measuring and processing devices, can be adjusted in a controlled manner according to the torque of the idling roller on the casting installation
Als Stellelemente können bei einem endlosen umlaufenden Band beziehungsweise Kette Spannrollen verwendet werdenTensioning rollers can be used as control elements in an endless circulating belt or chain
Bei einem endlichen Band beziehungsweise Kette sind bevorzugt hydrauliche Soaππzylinder an den Bandenden oder an einem Bandende angeordnet Insbesondere kann auch eine Kombination eines umlaufenden Banαes mit einer unterstutzenden Kette vorgesehen seinIn the case of a finite belt or chain, hydraulic hydraulic cylinders are preferably arranged at the belt ends or at a belt end. In particular, a combination of a rotating belt with a supporting chain can also be provided
Anhand eines in der beigefugten Abbildung schematisch dargestellten Ausführungsbeispieles wird die Erfindung naher erläutertThe invention is explained in more detail with reference to an exemplary embodiment shown schematically in the attached figure
Die erfmdungsgemaße Gießanlage besteht aus einer Gießeinrichtung 1 mit einem endlos umlaufenden Band, einer Ausgleichsstrecke 2 und einer nachfolgenden Fördereinrichtung 3. Der vergossene Strang 4 wird zwischen der Fördereinrichtung 3 und der Rolle 11 der Gießeinrichtung 1 gefordert Zwischen den neiden Fördereinrichtungen 3 1 1 ist in der Ausgleichsstrecke 2 das flexible Stutzelement 5 angeordnet. Das flexible Stutzelement 5 ist wie angedeutet als Kette mit Rollen ausgebildet Die Kette 5 wird über Stutzrollen 51 und Kettenspanner 52 gespannt. Die Haπgekurve der Kette 5 bestimmt die Lange des Bandes 4 Bei gespannter Lage wird das Band 4 praktisch in der gestrichelten Position fluchtend zwischen den Fördereinrichtungen 1 1 und 3 gefuhrt Bei verminderter Ketteπspanπung hangt das Band entsprechend der Hangekurve zwischen den Rollen 51 durchThe casting installation according to the invention consists of a casting device 1 with an endlessly rotating belt, a compensating section 2 and a subsequent conveyor device 3. The cast strand 4 is required between the conveyor device 3 and the roller 11 of the casting device 1 Compensating section 2 arranged the flexible support element 5. As indicated, the flexible support element 5 is designed as a chain with rollers. The chain 5 is tensioned via support rollers 51 and chain tensioner 52. The hanging curve of the chain 5 determines the length of the belt 4. When the tension is in position, the belt 4 is practically aligned between the conveyors 11 and 3 in the dashed position. With reduced chain tension, the belt sags between the rollers 51 in accordance with the hanging curve
In Verbindung mit nicht dargestellten Meß- und Regeleinrichtungen wird die Spannung der Kette 5 nach dem Drehmoment an der Rolle 12 geregelt Bevorzugt wird durch die Regeleinrichtung auch die Geschwindigkeit der Rollen der Fördereinrichtung 3 geregelt Die Anordnung eines flexiblen Stützelementes ist überall dort vorteilhaft, wo der vergossene Strang gestützt werden muß, um vertikale Belastungen zu verringern. Das flexible Stützelement kann daher vorteilhaft nicht nur bei Bandgießanlagen, sondern auch bei Gießanlagen für andere Abmessungen verwendet werden.In connection with measuring and control devices, not shown, the tension of the chain 5 is regulated according to the torque on the roller 12. The speed of the rollers of the conveyor device 3 is preferably also regulated by the control device The arrangement of a flexible support element is advantageous wherever the cast strand has to be supported in order to reduce vertical loads. The flexible support element can therefore advantageously be used not only in strip casting systems, but also in casting systems for other dimensions.
In einer weiter bevorzugten Anordnung wird die Länge des Stützelements so verändert, daß auf das aufliegende Band eine konstante, unterstützende Kraft ausgeübt wird. Hierzu wird z. B. die auf die Kette wirkende Kraft lageabhängig bestimmt. Aus der Differenz zur Kraftmessung mit Strang ergibt sich unter Berücksichtigung der Tragkeitskräfte die als Regelgröße einzustellende unterstützende Kraft.In a further preferred arrangement, the length of the support element is changed so that a constant, supporting force is exerted on the band lying thereon. For this, z. B. determines the force acting on the chain depending on the position. From the difference to the force measurement with a strand, the supporting force to be set as a controlled variable is obtained, taking into account the inertial forces.
In einer weiter bevorzugten Anordnung wird die Kette oder das Band an einer oder an mehreren Stellen drehend gelagert, so daß sich zwei oder mehrere Schlingen ergeben Hierdurch wird die Durchhangung vermindert, und eine Einhansung des Stützelementes zum Beispiel zur Einstellung einer Schutzgasatmosphäre kann ein geringeres Volumen aufweisen. In a further preferred arrangement, the chain or the belt is rotatably supported at one or more points, so that two or more loops are obtained. This reduces the sag, and a binding of the support element, for example for setting a protective gas atmosphere, can have a smaller volume .

Claims

Patentansprüche claims
1 Bandgießanlage mit einer Schmelzenzuführung und wenigstens einer Kühleinrichtung zur Kühlung der Schmelze, dadurch gekennzeichnet, daß für das erstarrte Band ein flexibles Führ- und Stützelement angeordnet ist.1 strip caster with a melt feed and at least one cooling device for cooling the melt, characterized in that a flexible guide and support element is arranged for the solidified strip.
2. Bandgießanlage nach Anspruch 1 , dadurch gekennzeichnet, daß die Länge des Stützelementes einstellbar ist.2. Belt caster according to claim 1, characterized in that the length of the support element is adjustable.
3. Gießanlage nach Anspruch 1 oder 2, dadurch gekennzeichnet, daß als flexibles Stützelement eine Kette angeordnet ist.3. Casting plant according to claim 1 or 2, characterized in that a chain is arranged as a flexible support element.
4. Gießanlage nach Anspruch 1 oder 2, dadurch gekennzeichnet, daß in dem flexiblen Stützelement Rollelemeπte angeordnet sind.4. Casting plant according to claim 1 or 2, characterized in that Rollelemeπte are arranged in the flexible support element.
5. Gießanlage nach Anspruch 1 oder 2, dadurch gekennzeichnet, daß als Stützelement ein Band angeordnet ist.5. Casting plant according to claim 1 or 2, characterized in that a band is arranged as a support element.
6. Gießanlage nach einem der Ansprüche 1 bis 5, dadurch gekennzeichnet, daß das Stützelement eine endlose Schlaufe bildet.6. Casting plant according to one of claims 1 to 5, characterized in that the supporting element forms an endless loop.
7. Gießanlage nach Anspruch 6, dadurch gekennzeichnet, daß das Stützelement umläuft.7. Casting plant according to claim 6, characterized in that the support element rotates.
8. Gießanlage nach einem der Ansprüche 1 bis 7, dadurch gekennzeichnet.daß an dem flexiblen Stützelement wenigstens eine Stelleinrichtung zur Regulierung der Spannung in Längsrichtung, insbesondere wenistens eine Spannrolle angeordnet ist. 8. Casting plant according to one of claims 1 to 7, characterized. That at least one adjusting device for regulating the tension in the longitudinal direction, in particular at least one tensioning roller, is arranged on the flexible support element.
EP97926984A 1996-06-07 1997-06-03 Strip casting plant Expired - Lifetime EP0906162B1 (en)

Applications Claiming Priority (5)

Application Number Priority Date Filing Date Title
DE19622928 1996-06-07
DE19622928 1996-06-07
DE19636699A DE19636699C2 (en) 1996-06-07 1996-09-10 Belt caster
DE19636699 1996-09-10
PCT/DE1997/001149 WO1997047410A1 (en) 1996-06-07 1997-06-03 Strip casting plant

Publications (2)

Publication Number Publication Date
EP0906162A1 true EP0906162A1 (en) 1999-04-07
EP0906162B1 EP0906162B1 (en) 2001-01-10

Family

ID=26026411

Family Applications (1)

Application Number Title Priority Date Filing Date
EP97926984A Expired - Lifetime EP0906162B1 (en) 1996-06-07 1997-06-03 Strip casting plant

Country Status (16)

Country Link
US (1) US6192973B1 (en)
EP (1) EP0906162B1 (en)
CN (1) CN1084649C (en)
AT (1) ATE198561T1 (en)
AU (1) AU727137B2 (en)
BR (1) BR9709656A (en)
CA (1) CA2257366C (en)
CZ (1) CZ290859B6 (en)
DK (1) DK0906162T3 (en)
ES (1) ES2153199T3 (en)
GR (1) GR3035611T3 (en)
HU (1) HU218882B (en)
PL (1) PL183556B1 (en)
SK (1) SK283520B6 (en)
TR (1) TR199802540T2 (en)
WO (1) WO1997047410A1 (en)

Families Citing this family (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE19823440C1 (en) * 1998-05-19 1999-12-09 Mannesmann Ag Method and device for the near-dimensional casting of metal
DE102007056192A1 (en) * 2007-11-21 2009-05-28 Sms Demag Ag Method and device for producing a strip of metal
RU2627827C2 (en) 2013-04-16 2017-08-11 Ламек Аг Transporter

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Publication number Priority date Publication date Assignee Title
DE588616C (en) * 1931-05-17 1933-11-28 Siemens Schuckertwerke Akt Ges Pull-through furnace, especially for annealing brass bands
US3283368A (en) * 1964-03-26 1966-11-08 Koppers Co Inc Roller apron conveyor continuous casting machine
US3446270A (en) * 1966-05-09 1969-05-27 Bliss Co Apparatus for continuous casting
US3627591A (en) * 1968-04-15 1971-12-14 Messer Griesheim Gmbh Process for supporting continuously cast workpieces during the cutting operation
US3797557A (en) * 1972-02-10 1974-03-19 A Tseitlin Device for ingot withdrawal from mould during continuous casting of metals
US3985618A (en) * 1975-05-02 1976-10-12 Irving Innerfield Method for detection of thrombosis and prethrombosis
SU1002087A1 (en) * 1981-02-17 1983-03-07 Всесоюзный научно-исследовательский институт металлургической теплотехники Plant for steel continuous casting
JPS6036855A (en) * 1983-08-05 1985-02-26 株式会社日立製作所 Refrigerator
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JPH02133150A (en) * 1988-11-10 1990-05-22 Ishikawajima Harima Heavy Ind Co Ltd Continuous casting equipment
JPH05200493A (en) * 1992-01-24 1993-08-10 Nippon Steel Corp Method for carrying and cooling cast strip in strip continuously casting method
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Also Published As

Publication number Publication date
CN1222873A (en) 1999-07-14
SK283520B6 (en) 2003-09-11
PL330403A1 (en) 1999-05-10
CA2257366A1 (en) 1997-12-18
AU727137B2 (en) 2000-12-07
CA2257366C (en) 2005-08-09
CZ290859B6 (en) 2002-10-16
HUP9901523A3 (en) 2000-01-28
ATE198561T1 (en) 2001-01-15
GR3035611T3 (en) 2001-06-29
CN1084649C (en) 2002-05-15
SK167198A3 (en) 1999-05-07
TR199802540T2 (en) 1999-03-22
BR9709656A (en) 1999-08-10
ES2153199T3 (en) 2001-02-16
PL183556B1 (en) 2002-06-28
HUP9901523A1 (en) 1999-08-30
CZ401498A3 (en) 1999-09-15
US6192973B1 (en) 2001-02-27
HU218882B (en) 2000-12-28
DK0906162T3 (en) 2001-02-05
WO1997047410A1 (en) 1997-12-18
EP0906162B1 (en) 2001-01-10
AU3164397A (en) 1998-01-07

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