EP1318883A1 - Strip casting machine for production of a metal strip - Google Patents

Strip casting machine for production of a metal strip

Info

Publication number
EP1318883A1
EP1318883A1 EP01966929A EP01966929A EP1318883A1 EP 1318883 A1 EP1318883 A1 EP 1318883A1 EP 01966929 A EP01966929 A EP 01966929A EP 01966929 A EP01966929 A EP 01966929A EP 1318883 A1 EP1318883 A1 EP 1318883A1
Authority
EP
European Patent Office
Prior art keywords
housing
casting
casting machine
machine according
rollers
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
EP01966929A
Other languages
German (de)
French (fr)
Other versions
EP1318883B1 (en
Inventor
Heinrich Marti
Jacques Barbe
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.)
Main Management Inspiration AG
SMS Siemag AG
Original Assignee
Main Management Inspiration AG
SMS Demag 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 PCT/EP2000/009158 external-priority patent/WO2001023120A1/en
Application filed by Main Management Inspiration AG, SMS Demag AG filed Critical Main Management Inspiration AG
Priority to EP01966929A priority Critical patent/EP1318883B1/en
Priority claimed from PCT/CH2001/000573 external-priority patent/WO2002024379A1/en
Publication of EP1318883A1 publication Critical patent/EP1318883A1/en
Application granted granted Critical
Publication of EP1318883B1 publication Critical patent/EP1318883B1/en
Anticipated expiration legal-status Critical
Expired - Lifetime legal-status Critical Current

Links

Definitions

  • the invention relates to a strip casting machine for producing a metal strip, with two casting rolls arranged next to one another, forming a casting gap, each with a jacket width, on which end seals are arranged on the front side, rotatably mounted on a machine stand and driven by at least one motor, the between these casting rolls and the side seals are protected from at least one gaseous medium by at least one pouring tube or the like fillable metal melt.
  • a box-shaped container is provided for sealing the solidified metal strip emerging between the casting rolls, the wall of which extends to the lower outer jacket of the respective casting roll, and a seal is generated by a sealing element.
  • a seal is relatively complex both in terms of construction and in terms of maintenance and causes undesired contact of the sealing element with the rotating casting roller. If there are any leaks, there is a risk that the metal strip will develop a scale that reduces its quality.
  • the present invention was based on the object of creating a strip casting machine of the type mentioned at the outset, with which a perfect seal against the ambient air both of the metal bath or of the metal strip produced and of the casting rolls and furthermore simplified operation and maintenance of the machine is made possible ,
  • the object is achieved according to the invention in that at least the casting rolls at least in each case over their jacket width and end faces and the side seals are surrounded by a preferably multi-part housing.
  • the casters and side seals can still be made quickly and easily accessible for servicing and maintenance, which can increase the operating performance of this machine.
  • a longitudinal housing with a chamber adjoins the housing for the metal strip emerging below these casting rolls through the casting gap formed, the chamber formed by the housing being connected through an opening to the subsequent chamber of the longitudinal housing.
  • FIG. 1 shows a schematic longitudinal section through a strip casting machine according to the invention
  • FIG. 2 shows a cross section of a housing through the axes of the casting rolls of a strip casting machine according to the invention
  • FIG. 4 shows a schematic view of a further variant of a strip casting machine.
  • FIG. 1 shows a strip casting machine 20 of a metal strip 15 that can be produced in a continuous casting process, in particular one Steel strip.
  • This band casting machine 20 stands on a stage 12 and is supplied with molten metal 16 by a distributor vessel 18 above it, as is known in conventional continuous casting plants.
  • the distributor vessel 18 expediently has a pouring opening 17 which can be closed with a stopper 19 or the like and has a pouring tube 13 which extends between the casting rollers 22, 24 and through which the melt can flow off.
  • this band casting machine 20 has two casting rolls 22, 24 arranged essentially parallel to one another with an approximately horizontal axis of rotation, which are each provided with a side seal 25 on both end faces, whereby an all-round opening 26 with a downwardly open casting gap 15 'is formed ,
  • the casting rolls 22, 24 are rotatably supported on both sides on an indicated machine stand 32 and driven by a motor integrated therein.
  • the casting rolls 22, 24 are surrounded by a closable housing 30, which has an opening 30 'on its upper side for the casting tube 13 extending between the casting rolls 22, 24 and an opening 30' 'for the emerging metal strip 15 on the underside , these openings 30 ', 30 "being sealed and the chamber 33 in the housing being filled with a protective gas, preferably an inert gas, during casting.
  • a protective gas preferably an inert gas
  • This box-shaped housing 30 is very advantageously arranged both laterally and at the top at a distance from the casting rollers 22, 24 or from the machine stand 32, so that no sealing elements shielding against the outside need be provided, as is the case for example is required for the casting machine according to EP-A-0 780 177 mentioned at the beginning.
  • this housing 30 is provided with two horizontally lying doors 35, which are designed in such a way that they can be moved from the closed position shown in FIG. 1 to a horizontally pushed position. For this purpose, they are guided laterally in corresponding rails (not illustrated), wherein they are advantageously lowered into the closed position shown in order to achieve the intended tightness of the housing 30.
  • the housing 30 is also assigned openings 39 which can be closed laterally by means of doors 36 and which serve to ensure that the side seals 25 of the casting rollers 22 ′′ , 24 are manipulated by a manipulator 40, which can be moved outside the housing 30, from the operating position shown through these openings 39 can be guided out of or into the housing 30.
  • the respective manipulator 40 has a holding arm 41 and a drive 42 that can be adjusted in height. It can be moved from an operating position to a retracted maintenance position and vice versa 40, a seal of the non-closed opening 39 can be brought about by means of a separate protective cover 38, this protective cover 38 enclosing the manipulator 40 and accordingly striking laterally against the housing 30.
  • cassettes 88 for the introduction and removal of side seals 25 are also indicated.
  • the cast metal strip 15 is guided below the housing 30 into an additional longitudinal housing 44, which forms a chamber 45, in which a protective gas is also contained, in order to prevent the metal strip 15 from coming into contact with oxygen and thus in particular to protect scale formation.
  • a plurality of rollers 46 and press rollers 47 are arranged in this chamber 44, so that the metal strip 15 is guided through this longitudinal housing 44 and through an opening 48 sealed in it. After exiting from this housing 44, this metal strip, which has cooled until then, can, for example, be rolled up or otherwise processed.
  • the longitudinal housing 44 has a depression 49 below the opening 30 ′′ or the casting gap 15 ′, in which there is a collecting container 52 placed in a system base 51.
  • This collecting container 52 has the task of removing the bottom from the casting rolls in the event of a leak to catch emerging liquid melt without causing any damage above this container 52 there are still pivotable guide flaps 54, 55 which form a passage * in the position shown, but in the dot-dash pivot position 54 ', 55' as a guideway for the metal strip 15 serve.
  • the upper opening 30 'in the housing 30 is sealed by a bellows 11 or the like which connects the vessel 18 to it, this sleeve-shaped bellows 11 enclosing the pouring tube 13.
  • the pouring tube could also be omitted and a freewheel could be provided.
  • the lower opening 30 ′′ of the housing, through which the band 15 passes, can be sealed, for example, as a sealing device by a gas screen produced by nozzles 34. In principle, however, this sealing device could be omitted and the opening 30 ′′ thus open continuously into the chamber 45.
  • the housing 30 has a feed line (not shown in more detail) for blowing protective gas into the interior 33. Shielding gas can also be passed additionally into the distributor vessel 18 provided with a lid. The gas introduced into the housing 30 can be cooled and returned through a gas circuit. After a casting process has been completed and before the housing is opened, the protective gas can be drawn off into a reservoir and, if necessary, the air can be filtered out in it.
  • Fig. 2 and Fig. 3 show in principle a variant of a strip casting machine, which is designed in itself the same as that of Fig. 1.
  • a housing 60 is provided, in which, according to the invention, the casting rollers 22, 24 are surrounded by the multi-part housing 60 over their jacket width and end faces, as well as the side seals 62, but not the motor stand 61 which supports the axes 64 of the casting rollers 22, 24.
  • This housing 60 encloses the axes and also the drive 66 of the seals 62 on both sides of the casting rolls. On the upper side it is spaced apart from the indicated melt container 18.
  • the multi-part housing 60 is provided with a base foot 67 which can be fastened to this longitudinal housing via a fastening member 69.
  • the longitudinal housing 65 is advantageously closed all around and only has a sealed outlet for the cast metal strip 15.
  • 4 shows a strip casting machine according to the invention, again with two casting rolls 22, 24, which are contained in a housing 80.
  • This housing 80 consists of a double-walled side wall 81 and a cover 82 which is held so that it can be lifted off, as is indicated by the lifted off cover 82 '.
  • the housing 80 surrounds the casting rollers 22, 24 and the side seals 83.
  • the housing has an opening 84 at the bottom, which opens into the chamber 85 ′ of a longitudinal housing 85.
  • This housing 80 is positioned in a frame 88 which has wheels 87 which are guided on rails 89.
  • both the housing 80 and the longitudinal housing 85 are advantageously water-cooled so that they do not heat up excessively over the course of the operating time.

Landscapes

  • Continuous Casting (AREA)

Abstract

The invention relates to a strip casting machine for production of a metal strip, comprising two adjacent case-width casting rollers (22, 24), forming a casting gap (15'), with side seals (25) arranged on the front face thereof. The rotating casting rollers are mounted on a machine mount (32). Between the above and the side seals (25), the metal melt, introduced by means of at least one casting tube (13), or similar, is protected by at least one gaseous medium. At least said casting rollers (22, 24) are surrounded on at least the case width and front face thereof as well as the side seals by a preferably multi-component housing (30, 60, 80). An optimal sealing of the casting rollers, as well as the metal strip and the metal strip appearing from between the rollers can thus be achieved in a simple manner.

Description

Bandgiessmaschine zur Erzeugung eines Metallbandes Belt casting machine for producing a metal belt
Die Erfindung betrifft Bandgiessmaschine zur Erzeugung eines Metallbandes, mit zwei nebeneinander angeordneten, einen Giessspalt bildenden, mit je einer Mantelbreite versehenen Giessrolle, an welchen stirnseitig Seitenabdichtungen angeordnet sind, auf einem Maschinenständer drehbar gelagert und von wenigstens einem Motor angetrieben sind, wobei die zwischen diesen Giessrollen und den Seitenabdichtungen durch wenigstens ein Giessrohr oder dergleichen einfüllbare Metallschmelze von mindestens einem gasförmigen Medium geschützt ist.The invention relates to a strip casting machine for producing a metal strip, with two casting rolls arranged next to one another, forming a casting gap, each with a jacket width, on which end seals are arranged on the front side, rotatably mounted on a machine stand and driven by at least one motor, the between these casting rolls and the side seals are protected from at least one gaseous medium by at least one pouring tube or the like fillable metal melt.
Bei einer gattungsmässigen Bandgiessmaschine gemäss der Druckschrift WO-A-97/34718 sind die horizontal angeordneten Giessrollen in einem diese tragenden Maschinenrahmen gelagert, auf welchem ein Verteiler- gefäss steht. Für die Abdichtung der Metallbadoberfläche ist eine annähernd parallel über dem Bad befindliche Platte vorgesehen, die bei den Giessrollen abdichtet. Unterhalb der Giessrollen sind an den Maschinenrahmen anschliessende separate Wandteile und ein an diese angrenzender mehrteiliger Kasten angeordnet, aus dem das Band austritt. Nachteilig bei dieser Bandgiessmaschine ist die relativ aufwendige Konstruktion für die Abdichtung des Metallbades bzw. des erzeugten Metallbandes.In a band casting machine of the generic type according to the publication WO-A-97/34718, the horizontally arranged casting rolls are in one these load-bearing machine frames are mounted on which there is a distributor vessel. For the sealing of the metal bath surface an approximately parallel plate is provided, which seals the casters. Below the casting rolls, separate wall parts adjoining the machine frame and a multi-part box adjoining them are arranged, from which the strip emerges. A disadvantage of this strip casting machine is the relatively complex construction for sealing the metal bath or the metal strip produced.
Bei einer weiteren bekannten Zweirollen-Bandgiessmaschine nach der Druckschrift EP-A-0 780 177 ist für die Abdichtung des unten zwischen den Giessrollen austretenden verfestigten Metallbandes ein kastenförmiger Behälter vorgesehen, der sich mit seiner Wandung bis an den unteren Aussenmantel der jeweiligen Giessrolle erstreckt, und durch ein Dichtelement eine Abdichtung erzeugt ist. Eine solche Abdichtung ist jedoch sowohl konstruktiv als auch in bezug auf die Wartung relativ aufwendig und bedingt eine unerwünschte Berührung des Dichtelementes mit der sich drehenden Giessrolle. Bei entstehenden Undichtheiten be- steht die Gefahr, dass bei dem Metallband eine dessen Qualität mindernde Zunderbildung entsteht.In a further known two-roll band casting machine according to the document EP-A-0 780 177, a box-shaped container is provided for sealing the solidified metal strip emerging between the casting rolls, the wall of which extends to the lower outer jacket of the respective casting roll, and a seal is generated by a sealing element. However, such a seal is relatively complex both in terms of construction and in terms of maintenance and causes undesired contact of the sealing element with the rotating casting roller. If there are any leaks, there is a risk that the metal strip will develop a scale that reduces its quality.
Der vorliegenden Erfindung wurde demgegenüber die Aufgabe zugrundegelegt, eine Bandgiessmaschine nach der eingangs erwähnten Gattung zu schaffen, mit der eine einwandfreie Abdichtung gegenüber der Umgebungsluft sowohl des Metallbades bzw. des erzeugten Metallbandes als auch der Giessrollen und ferner eine vereinfachte Bedienung und Instandstellung der Maschine ermöglicht wird.In contrast, the present invention was based on the object of creating a strip casting machine of the type mentioned at the outset, with which a perfect seal against the ambient air both of the metal bath or of the metal strip produced and of the casting rolls and furthermore simplified operation and maintenance of the machine is made possible ,
Die Aufgabe ist erfindungsgemäss dadurch gelöst, dass wenigstens die Giessrollen mindestens jeweils über ihre Mantelbreite und Stirnseiten und die Seitenabdichtungen von einem vorzugsweise mehrteiligen Gehäuse umgeben sind.The object is achieved according to the invention in that at least the casting rolls at least in each case over their jacket width and end faces and the side seals are surrounded by a preferably multi-part housing.
Mit dieser erfindungsgemässen Auslegung der Bandgiessmaschine lässt sich auf einfache Weise eine optimale Abdichtung sowohl des zwischen den Rollen eingefüllten Metallbades als auch des unten aus den Giessrollen austretenden Metallbandes erzielen.With this design of the strip casting machine according to the invention, optimum sealing of both the metal bath filled between the rollers and the metal strip emerging from the bottom of the casting rollers can be achieved in a simple manner.
Für die Instandstellung und Wartung können die Giessrollen und die Seitenabdichtungen aber trotzdem schnell und einfach zugänglich gemacht werden, wodurch die Betriebsleistung dieser Maschine gesteigert werden kann.However, the casters and side seals can still be made quickly and easily accessible for servicing and maintenance, which can increase the operating performance of this machine.
Bei einer sehr vorteilhaften Ausführung schliesst an das Gehäuse für das unten zwischen diesen Giessrollen durch den gebildeten Giessspalt austretende Metallband ein Längsgehäuse mit einer Kammer an, wobei die vom Gehäuse gebildete Kammer durch eine Öffnung mit der nachfolgenden Kammer des Längsgehäuses verbunden ist.In a very advantageous embodiment, a longitudinal housing with a chamber adjoins the housing for the metal strip emerging below these casting rolls through the casting gap formed, the chamber formed by the housing being connected through an opening to the subsequent chamber of the longitudinal housing.
Ausführungsbeispiele der Erfindung sowie weitere Vorteile derselben sind nachfolgend anhand der Zeichnung näher erläutert. Es zeigt:Exemplary embodiments of the invention and further advantages thereof are explained in more detail below with reference to the drawing. It shows:
Fig.1 einen schematischen Längsschnitt durch eine erfindungsgemäs- se Bandgiessmaschine,1 shows a schematic longitudinal section through a strip casting machine according to the invention,
Fig.2 einen Querschnitt eines Gehäuses durch die Achsen der Giessrollen einer erfindungsgemässen Bandgiessmaschine,2 shows a cross section of a housing through the axes of the casting rolls of a strip casting machine according to the invention,
Fig.3 einen Schnitt durch das Gehäuse nach Fig.2, und3 shows a section through the housing of Figure 2, and
Fig.4 eine schematische Ansicht einer weiteren Variante einer Bandgiessmaschine.4 shows a schematic view of a further variant of a strip casting machine.
Fig.1 zeigt eine Bandgiessmaschine 20 eines in einem kontinuierlichen Giessverfahren erzeugbaren Metallbandes 15, insbesondere eines Stahlbandes. Diese Bandgiessmaschine 20 steht auf einer Bühne 12 und wird von einem über ihr stehenden Verteilergefäss 18 mit Metallschmelze 16 versorgt, wie dies bei an sich herkömmlichen Stranggiessanlagen bekannt ist. Zweckmässigerweise weist das Verteilergefäss 18 eine mit einem Stopfen 19 oder dergleichen verschliessbare Ausgussöffnung 17 mit einem zwischen die Giessrollen 22, 24 sich erstreckenden Giessrohr 13 auf, durch welches die Schmelze abfliessen kann.1 shows a strip casting machine 20 of a metal strip 15 that can be produced in a continuous casting process, in particular one Steel strip. This band casting machine 20 stands on a stage 12 and is supplied with molten metal 16 by a distributor vessel 18 above it, as is known in conventional continuous casting plants. The distributor vessel 18 expediently has a pouring opening 17 which can be closed with a stopper 19 or the like and has a pouring tube 13 which extends between the casting rollers 22, 24 and through which the melt can flow off.
Zur Hauptsache hat diese Bandgiessmaschine 20 zwei im wesentlichen parallel nebeneinander angeordnete Giessrollen 22, 24 mit annähernd horizontalem Drehachsenverlauf, die an beiden Stirnseiten mit je einer Seitenabdichtung 25 versehen sind, wodurch eine rundum geschlossene Öffnung 26 mit einem nach unten hin offenen Giessspalt 15' gebildet ist. Die Giessrollen 22, 24 sind beidseits auf je einem angedeuteten Maschinenständer 32 drehbar gelagert und von je einem darin integrierten Motor gesteuert angetrieben.Mainly, this band casting machine 20 has two casting rolls 22, 24 arranged essentially parallel to one another with an approximately horizontal axis of rotation, which are each provided with a side seal 25 on both end faces, whereby an all-round opening 26 with a downwardly open casting gap 15 'is formed , The casting rolls 22, 24 are rotatably supported on both sides on an indicated machine stand 32 and driven by a motor integrated therein.
Erfindungsgemäss sind die Giessrollen 22, 24 von einem verschliessba- ren Gehäuse 30 umgeben, welches auf seiner Oberseite eine Öffnung 30' für das sich zwischen die Giessrollen 22, 24 erstreckende Giessrohr 13 und auf der Unterseite eine Öffnung 30" für das austretende Metallband 15 aufweist, wobei diese Öffnungen 30', 30" abgedichtet sind und die Kammer 33 im Gehäuse während des Giessens mit einem Schutzgas, vorzugsweise einem Inertgas, gefüllt ist. Auf der Oberseite könnten bei Verwendung von zwei oder mehreren Giessrohren auch mehrere Öffnungen 30', die rund oder schlitzförmig ausgebildet sein können, mit oder ohne Giessrohr vorhanden sein.According to the invention, the casting rolls 22, 24 are surrounded by a closable housing 30, which has an opening 30 'on its upper side for the casting tube 13 extending between the casting rolls 22, 24 and an opening 30' 'for the emerging metal strip 15 on the underside , these openings 30 ', 30 "being sealed and the chamber 33 in the housing being filled with a protective gas, preferably an inert gas, during casting. If two or more pouring tubes are used, a plurality of openings 30 ', which may be round or slit-shaped, with or without a pouring tube, could also be present on the top.
Dieses kastenförmig ausgebildete Gehäuse 30 ist sehr vorteilhaft sowohl seitlich als auch oben beabstandet zu den Giessrollen 22, 24 bzw. zum Maschinenständer 32 angeordnet, so dass keine gegen aussen abschirmende Dichtelemente vorgesehen sein müssen, wie dies zum Beispiel bei der Giessmaschine nach eingangs erwähnten Druckschrift EP-A-0 780 177 erforderlich ist.This box-shaped housing 30 is very advantageously arranged both laterally and at the top at a distance from the casting rollers 22, 24 or from the machine stand 32, so that no sealing elements shielding against the outside need be provided, as is the case for example is required for the casting machine according to EP-A-0 780 177 mentioned at the beginning.
Auf der Oberseite ist dieses Gehäuse 30 mit zwei horizontal liegenden Türen 35 versehen, welche derart ausgestaltet sind, dass sie von der in Fig.1 gezeigten geschlossenen in eine horizontal weggeschobene Position verschiebbar sind. Zu diesem Zwecke sind sie seitlich in entsprechenden, nicht veranschaulichten Schienen geführt, wobei sie vorteilhaft in die gezeigte Schliessposition abgesenkt sind, um die bezweckte Dichtheit des Gehäuses 30 zu erreichen.On the upper side, this housing 30 is provided with two horizontally lying doors 35, which are designed in such a way that they can be moved from the closed position shown in FIG. 1 to a horizontally pushed position. For this purpose, they are guided laterally in corresponding rails (not illustrated), wherein they are advantageously lowered into the closed position shown in order to achieve the intended tightness of the housing 30.
Es könnte aber auch nur eine Türe vorgesehen sein, um allenfalls Dichtspalten einzusparen. Mit Vorteil würde diese eine Türe eine Grosse annähernd der beiden gezeigten Türen 35 aufweisen und demnach mit der Öffnung 30' für den Schmelzendurchlass versehen sein.However, only one door could be provided in order to save sealing gaps if necessary. This one door would advantageously have a size approximately equal to the two doors 35 shown and would accordingly be provided with the opening 30 'for the melt passage.
Des weiteren sind dem Gehäuse 30 seitlich ebenfalls mittels Türen 36 verschliessbare Öffnungen 39 zugeordnet, welche dazu dienen, dass die Seitenabdichtungen 25 der Giessrollen 22", 24 von jeweils einem ausser- halb des Gehäuses 30 verfahrbaren Manipulator 40 von der gezeigten Betriebsposition durch diese Öffnungen 39 aus dem bzw. in das Gehäuse 30 geführt werden können. Der jeweilige Manipulator 40 hat zu diesem Zwecke einen Haltearm 41 und einen diesen höhenverstellbaren Antrieb 42. Er kann von einer Betriebs- in eine zurückgezogene Wartungsposition und umgekehrt verfahren werden. In der Betriebsposition des Manipulators 40 kann mittels einer separaten Schutzhülle 38 eine Abdichtung der nicht geschlossenen Öffnung 39 herbeigeführt werden, wobei diese Schutzhülle 38 den Manipulator 40 umschliesst und demnach seitlich an das Gehäuse 30 dicht anschlägt. Ferner sind noch Kassetten 88 für das Heranführen und Wegnehmen von Seitenabdichtungen 25 angedeutet. Als weiterer Vorteil ist im Rahmen der Erfindung das gegossene Metallband 15 unterhalb des Gehäuses 30 in ein zusätzliches Längsgehäuse 44 geführt, das eine Kammer 45 bildet, in der ebenfalls ein Schutzgas enthalten ist, um das Metallband 15 vor einem Kontakt mit Sauerstoff und damit insbesondere vor eine Zunderbildung zu schützen. In dieser Kammer 44 sind mehrere Rollen 46 und Presswalzen 47 angeordnet, so dass das Metallband 15 durch dieses Längsgehäuse 44 und durch eine in ihm endseitige abgedichtete Öffnung 48 geführt wird. Nach dem Austritt aus diesem Gehäuse 44 kann dieses bis dahin abgekühlte Metall- band beispielsweise aufgerollt oder anderweitig bearbeitet werden.Furthermore, the housing 30 is also assigned openings 39 which can be closed laterally by means of doors 36 and which serve to ensure that the side seals 25 of the casting rollers 22 ″ , 24 are manipulated by a manipulator 40, which can be moved outside the housing 30, from the operating position shown through these openings 39 can be guided out of or into the housing 30. For this purpose, the respective manipulator 40 has a holding arm 41 and a drive 42 that can be adjusted in height. It can be moved from an operating position to a retracted maintenance position and vice versa 40, a seal of the non-closed opening 39 can be brought about by means of a separate protective cover 38, this protective cover 38 enclosing the manipulator 40 and accordingly striking laterally against the housing 30. Furthermore, cassettes 88 for the introduction and removal of side seals 25 are also indicated. As a further advantage, in the context of the invention, the cast metal strip 15 is guided below the housing 30 into an additional longitudinal housing 44, which forms a chamber 45, in which a protective gas is also contained, in order to prevent the metal strip 15 from coming into contact with oxygen and thus in particular to protect scale formation. A plurality of rollers 46 and press rollers 47 are arranged in this chamber 44, so that the metal strip 15 is guided through this longitudinal housing 44 and through an opening 48 sealed in it. After exiting from this housing 44, this metal strip, which has cooled until then, can, for example, be rolled up or otherwise processed.
Ferner weist das Längsgehäuse 44 unterhalb der Öffnung 30" bzw. des Giessspaltes 15' eine Vertiefung 49 auf, bei der ein in einem Anlagenboden 51 hinein gestellter Auffangbehälter 52 vorhanden ist. Dieser Auffangbehälter 52 hat die Aufgabe, bei einer Leckage die unten aus den Giessrollen austretende flüssige Schmelze aufzufangen, ohne dass irgendwelcher Schaden entstehen würde. Oberhalb dieses Behälters 52 sind noch verschwenkbare Führungsklappen 54, 55 angeordnet, die in der dargestellten Position einen Durchlass* bilden, indessen in der strichpunktierten Schwenkposition 54', 55' als Führungsbahn des Metallbandes 15 dienen.Furthermore, the longitudinal housing 44 has a depression 49 below the opening 30 ″ or the casting gap 15 ′, in which there is a collecting container 52 placed in a system base 51. This collecting container 52 has the task of removing the bottom from the casting rolls in the event of a leak to catch emerging liquid melt without causing any damage above this container 52 there are still pivotable guide flaps 54, 55 which form a passage * in the position shown, but in the dot-dash pivot position 54 ', 55' as a guideway for the metal strip 15 serve.
Im dargestellten Giesszustand gemäss Fig.1 ist die obere Öffnung 30' im Gehäuse 30 von einem das Gefäss 18 bis zu ihr verbindenden Balg 1 1 oder dergleichen abgedichtet, wobei dieser hülsenförmige Balg 11 das Giessrohr 13 umschliesst. Das Giessrohr könnte auch weggelassen und ein Freilauf vorgesehen sein. Die untere Öffnung 30" des Gehäuses, bei der das Band 15 durchtritt, kann beispielsweise als Dichtvorrichtung durch einen von Düsen 34 erzeugten Gasschirm abgedichtet sein. Im Prinzip könnte aber diese Dichtvorrichtung weggelassen und die Öffnung 30" damit durchgehend in die Kammer 45 münden. Ferner weist das Gehäuse 30 eine nicht näher gezeigte Zuleitung für das Einblasen von Schutzgas ins Innere 33 auf. Schutzgas kann auch zusätzlich in das mit einem Deckel versehene Verteilergefäss 18 geleitet werden. Das in das Gehäuse 30 eingeführte Gas kann durch einen Gas- Kreislauf gekühlt und zurückgeführt werden. Nach Beendigung eines Giessvorganges und vor dem Öffnen des Gehäuses kann das Schutzgas in einen Speicher abgesogen und gegebenenfalls die Luft in diesem herausgefiltert werden.1, the upper opening 30 'in the housing 30 is sealed by a bellows 11 or the like which connects the vessel 18 to it, this sleeve-shaped bellows 11 enclosing the pouring tube 13. The pouring tube could also be omitted and a freewheel could be provided. The lower opening 30 ″ of the housing, through which the band 15 passes, can be sealed, for example, as a sealing device by a gas screen produced by nozzles 34. In principle, however, this sealing device could be omitted and the opening 30 ″ thus open continuously into the chamber 45. Furthermore, the housing 30 has a feed line (not shown in more detail) for blowing protective gas into the interior 33. Shielding gas can also be passed additionally into the distributor vessel 18 provided with a lid. The gas introduced into the housing 30 can be cooled and returned through a gas circuit. After a casting process has been completed and before the housing is opened, the protective gas can be drawn off into a reservoir and, if necessary, the air can be filtered out in it.
Fig.2 und Fig.3 zeigen prinziphaft eine Variante einer Bandgiessmaschine, welche an sich gleich wie diejenige nach Fig.1 konzipiert ist. Bei dieser Bandgiessmaschine ist ein Gehäuse 60 vorgesehen, bei welchem erfindungsgemäss die Giessrollen 22, 24 über ihre Mantelbreite und Stirnseiten als auch die Seitenabdichtungen 62 von dem mehrteiligen Gehäuse 60 umgeben sind, nicht aber der die Achsen 64 der Giessrollen 22, 24 lagernde Motorenständer 61. Dieses Gehäuse 60 umschliesst beidseitig der Giessrollen die Achsen und auch den Antrieb 66 der Abdichtungen 62. Auf der Oberseite ist es- beabstandet zu dem angedeuteten Schmelzebehälter 18 angeordnet.Fig. 2 and Fig. 3 show in principle a variant of a strip casting machine, which is designed in itself the same as that of Fig. 1. In this belt casting machine, a housing 60 is provided, in which, according to the invention, the casting rollers 22, 24 are surrounded by the multi-part housing 60 over their jacket width and end faces, as well as the side seals 62, but not the motor stand 61 which supports the axes 64 of the casting rollers 22, 24. This housing 60 encloses the axes and also the drive 66 of the seals 62 on both sides of the casting rolls. On the upper side it is spaced apart from the indicated melt container 18.
Das mehrteilige Gehäuse 60 ist beim Übergang zu einem Längsgehäuse 65 mit einem Sockelfuss 67 versehen, der über ein Befestigungsorgan 69 an diesem Längsgehäuse befestigbar ist.At the transition to a longitudinal housing 65, the multi-part housing 60 is provided with a base foot 67 which can be fastened to this longitudinal housing via a fastening member 69.
Zwischen diesem Gehäuse 60 und dem Längsgehäuse 65 ist eine Öffnung 70 vorhanden, durch die diese beiden Gehäuse 60 und 65 miteinander verbunden sind. Das Längsgehäuse 65 ist vorteilhaft rundum verschlossen und weist einzig einen abgedichteten Ausgang für das gegossene Metallband 15 auf. Fig.4 zeigt eine erfindungsgemässe Bandgiessmaschine mit wiederum zwei Giessrollen 22, 24, die in einem Gehäuse 80 enthalten sind. Dieses Gehäuse 80 besteht aus einer doppelwandigen Seitenwand 81 und einem Deckel 82, der abhebbar gehalten ist, wie dies durch den abgehobenen Deckel 82' angedeutet ist.Between this housing 60 and the longitudinal housing 65 there is an opening 70 through which these two housings 60 and 65 are connected to one another. The longitudinal housing 65 is advantageously closed all around and only has a sealed outlet for the cast metal strip 15. 4 shows a strip casting machine according to the invention, again with two casting rolls 22, 24, which are contained in a housing 80. This housing 80 consists of a double-walled side wall 81 and a cover 82 which is held so that it can be lifted off, as is indicated by the lifted off cover 82 '.
Im Rahmen der Erfindung umgibt das Gehäuse 80 die Giessrollen 22, 24 sowie die Seitenabdichtungen 83. Ausserdem weist das Gehäuse unten eine Öffnung 84 auf, welche in die Kammer 85' eines Längsgehäuses 85 mündet. Dieses Gehäuse 80 ist in einem Rahmengestell 88 positioniert, welcher Räder 87 hat, die auf Schienen 89 geführt sind.In the context of the invention, the housing 80 surrounds the casting rollers 22, 24 and the side seals 83. In addition, the housing has an opening 84 at the bottom, which opens into the chamber 85 ′ of a longitudinal housing 85. This housing 80 is positioned in a frame 88 which has wheels 87 which are guided on rails 89.
Ferner ist sowohl das Gehäuse 80 als auch das Längsgehäuse 85 vorteilhaft wassergekühlt, damit diese sich nicht mit fortwährender Betriebsdauer zu stark erhitzen.Furthermore, both the housing 80 and the longitudinal housing 85 are advantageously water-cooled so that they do not heat up excessively over the course of the operating time.
Mit dieser Bandgiessmaschine nach Fig.4 ist eine formatunabhängige Konstruktion geschaffen worden, da das Gehäuse je nach Giessrollen- durchmesser grösser oder kleiner gemacht werden kann. With this band casting machine according to Fig. 4, a format-independent construction has been created, since the housing can be made larger or smaller depending on the casting roll diameter.

Claims

Patentansprüche claims
1. Bandgiessmaschine zur Erzeugung eines Metallbandes, mit zwei nebeneinander angeordneten, einen Giessspalt (15') bildenden, mit je einer Mantelbreite versehenen Giessrollen (22, 24), an welchen stirnseitig Seitenabdichtungen (25) angeordnet sind, auf einem Maschinenständer (32) drehbar gelagert und von wenigstens einem Motor angetrieben sind, wobei die zwischen diesen Giessrollen (22, 24) und den Seitenabdichtungen (25) durch wenigstens ein Giessrohr (13) oder dergleichen einfüllbare Metallschmelze von mindestens einem gasförmigen Medium geschützt ist, dadurch gekennzeichnet, dass wenigstens die Giessrollen (22, 24) mindestens jeweils über ihre Mantelbreite und Stirnseiten und die Seitenabdichtungen (25) von einem vorzugsweise mehrteiligen Gehäuse (30, 60, 80) umgeben sind.1. A strip casting machine for producing a metal strip, with two casting rolls (22, 24) arranged next to one another, forming a casting gap (15 ') and each having a jacket width, on which side seals (25) are arranged on the end face, can be rotated on a machine stand (32) stored and driven by at least one motor, the metal melt which can be filled between these casting rollers (22, 24) and the side seals (25) by at least one pouring tube (13) or the like being protected by at least one gaseous medium, characterized in that at least the Casting rollers (22, 24) are surrounded by a preferably multi-part housing (30, 60, 80) at least in each case over their jacket width and end faces and the side seals (25).
2. Bandgiessmaschine nach Anspruch 1 , dadurch gekennzeichnet, dass das Gehäuse (30, 60, 80) auf seiner Oberseite mit einer jeweiligen Öffnung (30') für das sich zwischen die Giessrollen (22, 24) erstreckende Giessrohr (13) oder dergleichen und auf seiner Unterseite mit einer Öffnung (30", 70, 84) für das unten zwischen diesen Giessrollen (22, 24) durch den gebildeten Giessspalt (15') austretende Metallband (15) versehen ist. 2. Belt casting machine according to claim 1, characterized in that the housing (30, 60, 80) on its upper side with a respective opening (30 ') for the pouring pipe (13) or the like and between the casting rolls (22, 24) on its underside is provided with an opening (30 ", 70, 84) for the metal strip (15) emerging between these casting rolls (22, 24) through the casting gap (15 ') formed.
3. Bandgiessmaschine nach Anspruch 1 oder 2, dadurch gekennzeichnet, dass unterhalb des Gehäuses (30) ein zusätzliches Längsgehäuse (44) angeordnet ist, das eine Kammer (45) bildet, durch die das Metallband (15) durchgeführt wird.3. Belt casting machine according to claim 1 or 2, characterized in that an additional longitudinal housing (44) is arranged below the housing (30), which forms a chamber (45) through which the metal strip (15) is carried out.
4. Bandgiessmaschine nach Anspruch 1 , dadurch gekennzeichnet, dass die auf der Unterseite des Gehäuses (30, 60, 80) für das austretende Metallband (15) vorgesehene Öffnung (30", 70, 84) in das Längsgehäuse (44, 65, 85) mündet und entweder durchgehend oder durch eine Dichtvorrichtung die beiden Kammern des Gehäuses bzw. des Längsgehäuses voneinander annähernd gasdicht trennt.4. Belt casting machine according to claim 1, characterized in that the opening (30 ", 70, 84) provided on the underside of the housing (30, 60, 80) for the emerging metal strip (15) into the longitudinal housing (44, 65, 85 ) opens and either continuously or by a sealing device separates the two chambers of the housing or the longitudinal housing from each other almost gas-tight.
5. Bandgiessmaschine nach Anspruch 4, dadurch gekennzeichnet, dass die Dichtvorrichtung der unteren schlitzförmigen Öffnung (30") des Gehäuses (30) aus Dichtstreifen (66), Dichtrollen (76) oder dergleichen besteht, welche beidseitig das durch' diese Öffnung (30") austretende Metallband (15) führen.5. Belt casting machine according to claim 4, characterized in that the sealing device of the lower slot-shaped opening (30 ") of the housing (30) consists of sealing strips (66), sealing rollers (76) or the like, which on both sides through this opening (30" ) guide emerging metal band (15).
6. Bandgiessmaschine nach einem der vorhergehenden Ansprüche 1 bis 5, dadurch gekennzeichnet, dass das kastenförmig ausgebildete Gehäuse (30) sowohl seitlich als auch oben beabstandet zu den Giessrollen (22, 24) angeordnet ist.6. Belt casting machine according to one of the preceding claims 1 to 5, characterized in that the box-shaped housing (30) is arranged both laterally and above at a distance from the casting rollers (22, 24).
7. Bandgiessmaschine nach einem der vorhergehenden Ansprüche 1 bis 6, dadurch gekennzeichnet, dass das verschliessbare Gehäuse (30) auf der Oberseite mit wenigstens einer wegnehmbaren, annähernd horizontal liegenden Türe (35) versehen ist, welche im verschlossenen Zustand unmittelbar über den Giessrollen (22, 24) befindlich ist.7. Belt casting machine according to one of the preceding claims 1 to 6, characterized in that the lockable housing (30) is provided on the upper side with at least one removable, approximately horizontal door (35), which in the closed state is located directly above the casting rollers (22, 24).
8. Bandgiessmaschine nach einem der vorhergehenden Ansprüche 1 bis 7, dadurch gekennzeichnet, dass den Türen (35) auf der Unterseite je ein mit jeweils einer Giessrolle (22, 24) und den Seitenabdichtungen (25) zusammenwirkendes Dichtsystem (60) zugeordnet ist, welches eine über der Metallschmelze befindliche Kammer (33') bildet, die getrennt zu der übrigen Kammer (33) im Gehäuse ist.8. Belt casting machine according to one of the preceding claims 1 to 7, characterized in that the doors (35) on the underside each with a respective casting roller (22, 24) and the side seals (25) cooperating sealing system (60) is assigned, which forms a chamber (33 ') located above the molten metal, which is separate from the remaining chamber (33) in the housing.
9. Bandgiessmaschine nach Anspruch 8, dadurch gekennzeichnet, dass die vom Dichtsystem (60) gebildete Kammer (33') mit einem Inertgas, indessen die übrige Kammer (33) im Gehäuse ein anderes Inertgas oder das Gehäuse und vorzugsweise auch das" Längsgehäuse eine Wärmeisolation bilden.9. Belt casting machine according to claim 8, characterized in that the chamber (33 ') formed by the sealing system (60) with an inert gas, meanwhile the remaining chamber (33) in the housing another inert gas or the housing and preferably also the " longitudinal housing a thermal insulation form.
10. Bandgiessmaschine nach Anspruch 8, dadurch gekennzeichnet, dass das einen Rahmen bildende Gehäuse (80) wassergekühlt ist. 10. Belt casting machine according to claim 8, characterized in that the housing (80) forming a frame is water-cooled.
EP01966929A 2000-09-19 2001-09-19 Strip casting machine for production of a metal strip Expired - Lifetime EP1318883B1 (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
EP01966929A EP1318883B1 (en) 2000-09-19 2001-09-19 Strip casting machine for production of a metal strip

Applications Claiming Priority (4)

Application Number Priority Date Filing Date Title
PCT/EP2000/009158 WO2001023120A1 (en) 1999-09-24 2000-09-19 Strip-casting machine for producing a metal band
WOPCT/EP00/09158 2000-09-19
PCT/CH2001/000573 WO2002024379A1 (en) 2000-09-19 2001-09-19 Strip casting machine for production of a metal strip
EP01966929A EP1318883B1 (en) 2000-09-19 2001-09-19 Strip casting machine for production of a metal strip

Publications (2)

Publication Number Publication Date
EP1318883A1 true EP1318883A1 (en) 2003-06-18
EP1318883B1 EP1318883B1 (en) 2007-04-25

Family

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Family Applications (1)

Application Number Title Priority Date Filing Date
EP01966929A Expired - Lifetime EP1318883B1 (en) 2000-09-19 2001-09-19 Strip casting machine for production of a metal strip

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EP (1) EP1318883B1 (en)

Non-Patent Citations (1)

* Cited by examiner, † Cited by third party
Title
See references of WO0224379A1 *

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