EP1752238B1 - Strand guide segment - Google Patents

Strand guide segment Download PDF

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Publication number
EP1752238B1
EP1752238B1 EP06020534A EP06020534A EP1752238B1 EP 1752238 B1 EP1752238 B1 EP 1752238B1 EP 06020534 A EP06020534 A EP 06020534A EP 06020534 A EP06020534 A EP 06020534A EP 1752238 B1 EP1752238 B1 EP 1752238B1
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EP
European Patent Office
Prior art keywords
strand guide
rolls
inner arc
segment frame
strand
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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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EP06020534A
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German (de)
French (fr)
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EP1752238A3 (en
EP1752238A2 (en
Inventor
Josef Guttenbrunner
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Primetals Technologies Austria GmbH
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Siemens VAI Metals Technologies GmbH and Co
Siemens VAI Metals Technologies GmbH Austria
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Publication of EP1752238A3 publication Critical patent/EP1752238A3/en
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    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B22—CASTING; POWDER METALLURGY
    • B22D—CASTING OF METALS; CASTING OF OTHER SUBSTANCES BY THE SAME PROCESSES OR DEVICES
    • B22D11/00—Continuous casting of metals, i.e. casting in indefinite lengths
    • B22D11/12—Accessories for subsequent treating or working cast stock in situ
    • B22D11/128—Accessories for subsequent treating or working cast stock in situ for removing
    • 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
    • B22D11/12—Accessories for subsequent treating or working cast stock in situ
    • B22D11/128—Accessories for subsequent treating or working cast stock in situ for removing
    • B22D11/1282—Vertical casting and curving the cast stock to the horizontal
    • 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
    • B22D11/12—Accessories for subsequent treating or working cast stock in situ
    • B22D11/128—Accessories for subsequent treating or working cast stock in situ for removing
    • B22D11/1284—Horizontal removing
    • 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
    • B22D11/12—Accessories for subsequent treating or working cast stock in situ
    • B22D11/128—Accessories for subsequent treating or working cast stock in situ for removing
    • B22D11/1285—Segment changing devices for supporting or guiding frames

Definitions

  • the invention relates to a strand guide segment in a slab or Dünnbrammenstrangg imaginestrom according to the preamble of claim 1.
  • Amaschinerollengerüst which is suitable for slab and Dünnbrammenstrangg intelligent fabric is from the AT-B 332 986 already known.
  • the strand guide rollers are supported with their roller pins in bearing chocks, which have vertical guides which cooperate with corresponding counter-guides onmaschinerollegerüstrahmen and attack on which pressure medium cylinder as adjusting. Since the two bearing chocks are loaded independently by the pressure cylinder, there is a risk of uneven loading of the strand and the tilting of the strand guide roller in the guides.
  • Strand guides are known in which a plurality of successively arranged roller sets are summarized to form a structural unit (segment), which is formed by an outer arc segment frame and an inner arc segment frame.
  • the inner arc segment frame is formed with all its strand guide rollers in its distance relative to the outer arc segment frame displaced.
  • driver rollers are carried out in the embodiment according to the AT-B 335 650 by two inclined to each other employed pressure cylinder, which engage at the edge regions of the driver rollers supporting cross member which is coupled via a parallel link system with the roller carriers of the other strand guide rollers on the inner arc segment frame.
  • This solution is mechanically complex and costly.
  • the object of the invention is therefore to avoid these disadvantages and to propose a strand guide segment, which enables the symmetrical application of a contact pressure on the cast strand with constructively little effort and reliably ensures the alignment of co-operating strand guide rolls. Furthermore, a reduction of investment and operating costs is sought.
  • the stated object is achieved according to the invention in that exclusively an adjusting device acting centrally on the displaceable roller carrier and on the inner curved segment frame is arranged, and guides on the displaceable roller carrier are engaged with counter guides on the inner curved segment frame.
  • the adjustment is fixed with swivel joints on the roller carrier and the inner arc segment frame. This effect is further enhanced if the connection line of the two pivot joints of the adjusting device, which corresponds to the line of action of the force application, is normal to the center axis of the displaceable strand guide rollers. Likewise, this effect is achieved when the connecting line of the two pivot joints intersects the central axes of a roller pair forming strand guide rollers.
  • the adjusting device is preferably formed by a controllable hydraulic cylinder.
  • An advantageous embodiment of the invention is that the guides on the roller carrier and the counter guides on the inner arc segment frame form contact surfaces, which are oriented parallel to the connecting line of the two pivot joints of the adjustment. This ensures that the line of action of the force application is consistent with the direction of movement of the roller carrier. By a corresponding length of the guides and counter guides tilting of the roller carrier in the guide element frame is avoided.
  • Fig. 1 an axonometric view of a strand guide segment with an integrated pair of driving wheels shows and Fig. 2 in a partial section of the Fig. 1 the arranged in the inner arc segment frame movable roller carrier.
  • a cast strand with a still liquid core and a thin strand shell is formed continuously in an oscillating cooled continuous casting mold.
  • downstream strand guide with several meters radius of curvature of the casting strand is deflected under constant cooling of substantially vertical direction in the horizontal direction and there.
  • a plurality of strand guide rollers which are arranged in two rows, form a transport channel for the cast strand, in which it is supported and guided.
  • Some of the strand guide rollers are designed as driver rollers and provided with a motor drive to ensure a controlled conveying speed for the casting strand and at the start of casting for the starter strand.
  • Such a continuous casting plant is for example from the DE-A 197 45 056 known.
  • the strand guide is composed of individual strand guide segments, such as one in Fig. 1 is shown schematically in axonometric representation. It is formed by an outer arch segment frame 1 and an inner arch segment frame 2 which are interconnected by four hydraulically actuable bracing devices 3a, 3b, 3c, 3d arranged in the corner regions of the segment frame, which allow a predetermined positioning of the inner arch segment frame 2 to the outer arch segment frame 1. This can be done in succession arranged roller carrier 4 mounted strand guide rollers 5 can be adjusted to the degree of strand thickness or casting start on the thickness of the Anfahrstranges. Each strand guide roller 5 is formed as a continuous, multi-bearing roller or a plurality of aligned rollers.
  • roller carriers 4 are firmly attached to the inner arch 2 or outer arch segment frame 1. However, the roller carriers 4 may also be formed only by the bearing housings 6, which are attached directly to the respective segment frame.
  • Fig. 2 shows in a partial section of Fig. 1 a arranged in the inner arc segment frame 2 roller carrier 7, the bearing 8 carries bearings that receive a multi-bearing, connected to a drive 9a strand guide roller 5a rotatably.
  • a similar driven strand guide roller 5b is disposed in the outer arch segment frame 1 opposite and in Fig. 1 indicated by the drive 9b, which is opposite to the drive 9a.
  • the driven strand guide roller 5 b is supported in stationary roller carriers 4 in the same way as the adjacent strand guide rollers 5 fastened in the outer arch segment frame 1.
  • the provided for the opposite driven strand guide roller 5a displaceable roller carrier 7 is connected on the one hand via a pivot joint 11 with a controllable pressure cylinder 10 and supported on the other hand via a pivot joint 12 on the inner arc segment frame 2.
  • the two pivot joints 11, 12 determine a connecting line 13, which corresponds to the line of action of the force application on the cast strand and in Fig. 2 coincides with the central axis of the pressure medium cylinder 10.
  • this connection line 13 intersects the central axis 14 of the driven strand guide roller 5a in the middle of its longitudinal extent. This ensures a uniform pressure distribution on the cast strand along the contact line of strand guide roll and cast strand.
  • Guides 15a, 16a are fastened on both sides to the displaceable roller carrier 7 in parallel with the connecting lines 13, which interact with corresponding counter-guides 15b, 16b on the inner arc segment frame 2.
  • the guides 15a are arranged on the broad sides of the roller carrier 7, approximately at a distance of half a strand guide roller 5a of its side edges.
  • the guides 16a bear against the end faces of the roller carrier.
  • the guides 15a and counter guides 15b stabilize the Roller carrier 7 in the casting direction G, the guides 16a and counter guides 16b in the transverse direction thereto.
  • a strand guide segment integrated by a movable roller carrier 7, a stationary roller carrier 4 the strand drive rollers driven 5a, 5b, the pressure cylinder 10 and the associated guides 15a, 16a formed strand guide element can also without the adjacent stationary strand guide rollers 5 as a narrow self-contained strand guide element be arranged in the strand guide a continuous casting.
  • the outer arc segment frame 1 and the inner arc segment frame 2 are thereby reduced to a guide element frame 17 for the displaceable roller carrier 7 with pressure medium cylinder 10 and the associated guides 15a, 15b, 16a, 16b.

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  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Continuous Casting (AREA)
  • Forging (AREA)

Description

Die Erfindung betrifft ein Strangführungssegment in einer Brammen- oder Dünnbrammenstranggießanlage gemäß dem Oberbegriff des Anspruchs 1.The invention relates to a strand guide segment in a slab or Dünnbrammenstranggießanlage according to the preamble of claim 1.

In einer Stranggießanlage sind im Bereich der Strangführung zwischen Kokille und dem horizontal angeordneten Auslaufrollgang in Abständen voneinander an den Gießstrang und bei Gießbeginn an den Anfahrstrang anstellbare und antreibbare Strangführungsrollen angeordnet. Durch die von diesen Strangführungsrollen aufgebrachten Anpresskräfte wird der kontrollierte Transport des Gießstranges bzw. des Anfahrstranges durch die Stranggießanlage mit einer vorbestimmten Fördergeschwindigkeit sichergestellt.In a continuous casting in the strand guide between mold and the horizontally arranged outfeed roller table at intervals from each other to the casting strand and at casting start to the Anfahrstrang engageable and drivable strand guide rollers are arranged. By the contact forces applied by these strand guide rollers, the controlled transport of the cast strand or the Anfahrstranges is ensured by the continuous casting at a predetermined conveying speed.

Bei Knüppelstranggießanlagen zum Gießen von Strängen mit nur geringer Querschnittsfläche bis etwa 200mm x 200mm ist es bekannt, einige Treibwalzengerüste in der Strangführung im Abstand voneinander anzuordnen, bei denen die anstellbare und antreibbare Strangführungsrolle des zusammenwirkenden Rollenpaares an einem Schwenkarm gelagert ist, der einerseits mit einer Anstelleinrichtung zum Anpressen der Strangführungsrolle an den Strang gekoppelt und andererseits im Treibwalzengerüstrahmen schwenkbar abgestützt ist ( DE-A 30 29 990 , DE-A 29 23 108 ). Eine Anstellvorrichtung für den Schwenkarm ist mit Schwenkgelenken am Schwenkarm und am Treibwalzengerüstrahmen angelenkt.In billet caster for casting strands with only small cross-sectional area to about 200mm x 200mm it is known to arrange some drive roller stands in the strand guide at a distance from each other, in which the engagable and drivable strand guide roller of the cooperating pair of rollers is mounted on a pivot arm, on the one hand with a Anstelleinrichtung coupled to press on the strand guide roller to the strand and on the other hand pivotally supported in Treibwalzengerüstrahmen ( DE-A 30 29 990 . DE-A 29 23 108 ). An adjusting device for the swivel arm is articulated with swivel joints on the swivel arm and the Treibwalzengerüstrahmen.

Ein Treibrollengerüst, welches für Brammen- und Dünnbrammenstranggießanlagen geeignet ist, ist aus der AT-B 332 986 bereits bekannt. Die Strangführungsrollen sind mit ihren Rollenzapfen in Lagereinbaustücken abgestützt, welche vertikale Führungen aufweisen, die mit entsprechenden Gegenführungen am Treibrollengerüstrahmen zusammenwirken und an denen Druckmittelzylinder als Verstelleinrichtungen angreifen. Da die beiden Lagereinbaustücke unabhängig voneinander durch die Druckmittelzylinder belastet werden, besteht die Gefahr ungleicher Belastung des Stranges und des Verkantens der Strangführungsrolle in den Führungen.A Treibrollengerüst, which is suitable for slab and Dünnbrammenstranggießanlagen is from the AT-B 332 986 already known. The strand guide rollers are supported with their roller pins in bearing chocks, which have vertical guides which cooperate with corresponding counter-guides on Treibrollegerüstrahmen and attack on which pressure medium cylinder as adjusting. Since the two bearing chocks are loaded independently by the pressure cylinder, there is a risk of uneven loading of the strand and the tilting of the strand guide roller in the guides.

Für die Anwendung in Brammenstranggießanlagen sind aus der AT-B 335 650 und der DE-A 197 45 056 bereits aus einzelnen Strangführungssegmenten gebildete Strangführungen bekannt, bei denen mehrere hintereinander angeordnete Rollensätze zu einer Baueinheit (Segment) zusammmengefasst sind, die von einem Außenbogensegmentrahmen und einem Innenbogensegmentrahmen gebildet ist. Der Innenbogensegmentrahmen ist mit allen seinen Strangführungsrollen in seinem Abstand relativ zum Außenbogensegmentrahmen verschiebbar ausgebildet. Zusätzlich ist mindestens eine Strangführungsrolle - nach der AT-B 335 650 eine randseitige Rolle, nach der DE-A 197 45 056 eine innen liegende Rolle - als angetriebene und unabhängig von den anderen Rollen anstellbare Treiberrolle ausgestaltet. Die Anstellung der Treiberrollen erfolgt bei der Ausführungsform nach der AT-B 335 650 durch zwei schräg zueinander angestellte Druckmittelzylinder, die an Randbereichen eines die Treiberrollen tragenden Querträgers angreifen, der über ein Parallellenkersystem mit den Rollenträgern der übrigen Strangführungsrollen am Innenbogensegmentrahmen gekoppelt ist. Diese Lösung ist mechanisch aufwendig und kostenintensiv.For use in slab casters are from the AT-B 335 650 and the DE-A 197 45 056 already formed from individual strand guide segments Strand guides are known in which a plurality of successively arranged roller sets are summarized to form a structural unit (segment), which is formed by an outer arc segment frame and an inner arc segment frame. The inner arc segment frame is formed with all its strand guide rollers in its distance relative to the outer arc segment frame displaced. In addition, at least one strand guide roller - after the AT-B 335 650 a peripheral role, after the DE-A 197 45 056 an internal roller - designed as driven and independently of the other roles engagable driver role. The employment of the driver rollers is carried out in the embodiment according to the AT-B 335 650 by two inclined to each other employed pressure cylinder, which engage at the edge regions of the driver rollers supporting cross member which is coupled via a parallel link system with the roller carriers of the other strand guide rollers on the inner arc segment frame. This solution is mechanically complex and costly.

Aus der Veröffentlichung Mörwald K. et al.: "Roll load measurements on thin slab caster for liquid core detection", Ironmaking and Steelmaking; Metals society, London, GB, Bd. 25, Nr. 2, 1. Januar 1998, Seiten 159-162 ist ein anstellbares Strangführungssegment einer Stranggießanlage mit zwei anstellbaren Druckmittelzylindern bekannt, wobei diese jeweils an einem Randbereich eines die Rollen tragenden Querträgers angreifen und mit einem Querträger des Innenbogensegmentrahmens gekoppelt sind. Durch die mechanische Konstruktion wird die symmetrische Aufbringung eines Anpressdrucks nicht sichergestellt.From the publication Mörwald K. et al .: "Roll load measurements on thin slabs for liquid core detection", Ironmaking and Steelmaking; Metals society, London, GB, Vol. 25, No. 2, Jan. 1, 1998, pages 159-162 is a engagable strand guide segment of a continuous casting with two adjustable pressure medium cylinders known, which each attack on an edge region of a roller supporting the cross member and are coupled to a cross member of the inner arc segment frame. Due to the mechanical construction, the symmetrical application of a contact pressure is not ensured.

Aus der AT 338 984 A ist ein anstellbares Strangführungssegment mit zwei Druckmittelzylindern bekannt, wobei diese an einem Querträger des Innenbogensegmentrahmens angreifen und über jeweils einen Führungsbolzen und Stützlaschen mit einem die Rollen tragenden Querträger gekoppelt sind. Diese Lösung ist mechanisch aufwendig und nicht spielfrei.From the AT 338 984 A is a engagable strand guide segment with two pressure cylinders known, which attack on a cross member of the inner arc segment frame and are coupled via a respective guide pin and support tabs with a roller supporting the cross member. This solution is mechanically complex and not free of play.

Aufgabe der Erfindung ist es daher diese Nachteile zu vermeiden und ein Strangführungssegment vorzuschlagen, welches mit konstruktiv geringem Aufwand die symmetrische Aufbringung eines Anpressdruckes auf den Gießstrang ermöglicht und das Fluchten zusammenwirkender Strangführungsrollen sicher gewährleistet. Weiters wird eine Reduktion der Investitions- und Betriebskosten angestrebt.The object of the invention is therefore to avoid these disadvantages and to propose a strand guide segment, which enables the symmetrical application of a contact pressure on the cast strand with constructively little effort and reliably ensures the alignment of co-operating strand guide rolls. Furthermore, a reduction of investment and operating costs is sought.

Die gestellte Aufgabe wird erfindungsgemäß dadurch gelöst, dass ausschließlich eine zentrisch am verlagerbaren Rollenträger und am Innenbogensegmentrahmen angreifende Verstelleinrichtung angeordnet ist und Führungen am verlagerbaren Rollenträger mit Gegenführungen am Innenbogensegmentrahmen in Eingriff sind.The stated object is achieved according to the invention in that exclusively an adjusting device acting centrally on the displaceable roller carrier and on the inner curved segment frame is arranged, and guides on the displaceable roller carrier are engaged with counter guides on the inner curved segment frame.

Um die symmetrische Verteilung des Anpressdruckes entlang der Berührungslinie von Gießstrang und angestellter Strangführungsrolle zu gewährleisten, ist die Verstelleinrichtung mit Schwenkgelenken am Rollenträger und am Innenbogensegmentrahmen befestigt. Dieser Effekt wird weiter verstärkt, wenn die Verbindungslinie der beiden Schwenkgelenke der Verstelleinrichtung, die der Wirkungslinie der Kraftaufbringung entspricht, normal auf der Mittenachse der verlagerbaren Strangführungsrollen steht. Gleichermaßen wird dieser Effekt erreicht, wenn die Verbindungslinie der beiden Schwenkgelenke die Mittelachsen der ein Rollenpaar bildenden Strangführungsrollen schneidet. Die Verstelleinrichtung wird vorzugsweise von einem regelbaren Hydraulikzylinder gebildet.In order to ensure the symmetrical distribution of the contact pressure along the contact line of cast strand and employee strand guide roller, the adjustment is fixed with swivel joints on the roller carrier and the inner arc segment frame. This effect is further enhanced if the connection line of the two pivot joints of the adjusting device, which corresponds to the line of action of the force application, is normal to the center axis of the displaceable strand guide rollers. Likewise, this effect is achieved when the connecting line of the two pivot joints intersects the central axes of a roller pair forming strand guide rollers. The adjusting device is preferably formed by a controllable hydraulic cylinder.

Eine vorteilhafte Ausgestaltung der Erfindung besteht darin, dass die Führungen am Rollenträger und die Gegenführungen am Innenbogensegmentrahmen Berührungsflächen bilden, die parallel zur Verbindungslinie der beiden Schwenkgelenke der Verstelleinrichtung orientiert sind. Damit wird erreicht, dass die Wirkungslinie der Kraftaufbringung gesichert mit der Bewegungsrichtung des Rollenträgers übereinstimmt. Durch eine entsprechende Länge der Führungen und Gegenführungen wird ein Verkanten des Rollenträgers im Führungselementrahmen vermieden.An advantageous embodiment of the invention is that the guides on the roller carrier and the counter guides on the inner arc segment frame form contact surfaces, which are oriented parallel to the connecting line of the two pivot joints of the adjustment. This ensures that the line of action of the force application is consistent with the direction of movement of the roller carrier. By a corresponding length of the guides and counter guides tilting of the roller carrier in the guide element frame is avoided.

Die Erfindung ist nachfolgend anhand eines nicht einschränkenden Ausführungsbeispieles näher erläutert, wobei Fig. 1 eine axonometrische Darstellung eines Strangführungssegmentes mit einem integrierten Treibrollenpaar zeigt und Fig. 2 in einem Teilschnitt der Fig. 1 den im Innenbogensegmentrahmen angeordneten verlagerbaren Rollenträger.The invention is explained below with reference to a non-limiting embodiment, wherein Fig. 1 an axonometric view of a strand guide segment with an integrated pair of driving wheels shows and Fig. 2 in a partial section of the Fig. 1 the arranged in the inner arc segment frame movable roller carrier.

In einer Stranggießanlage zur Herstellung von Strängen im Brammenformat wird in einer oszillierenden gekühlten Stranggießkokille kontinuierlich ein Gießstrang mit noch flüssigem Kern und einer dünnen Strangschale gebildet. In einer der Stranggießkokille in Gießrichtung nachgeordneten Strangführung mit mehreren Metern Krümmungsradius wird der Gießstrang unter ständiger Kühlung von im Wesentlichen vertikalen Richtung in die Horizontale umgelenkt und dort gerade gerichtet. Eine Vielzahl von Strangführungsrollen, die in zwei Reihen angeordnet sind, bilden einen Transportkanal für den Gießstrang, in dem er gestützt und geführt wird. Einige der Strangführungsrollen sind als Treiberrollen ausgebildet und mit einem motorischen Antrieb versehen, um eine kontrollierte Fördergeschwindigkeit für den Gießstrang und bei Gießbeginn für den Anfahrstrang zu gewährleisten. Eine derartige Stranggießanlage ist beispielsweise aus der DE-A 197 45 056 bekannt.In a continuous casting plant for producing strands in the slab format, a cast strand with a still liquid core and a thin strand shell is formed continuously in an oscillating cooled continuous casting mold. In one of the continuous casting mold in the casting direction downstream strand guide with several meters radius of curvature of the casting strand is deflected under constant cooling of substantially vertical direction in the horizontal direction and there. A plurality of strand guide rollers, which are arranged in two rows, form a transport channel for the cast strand, in which it is supported and guided. Some of the strand guide rollers are designed as driver rollers and provided with a motor drive to ensure a controlled conveying speed for the casting strand and at the start of casting for the starter strand. Such a continuous casting plant is for example from the DE-A 197 45 056 known.

Die Strangführung ist aus einzelnen Strangführungssegmenten zusammengesetzt, wie eines in Fig. 1 in axonometrischer Darstellung schematisch dargestellt ist. Es ist von je einem Außenbogensegmentrahmen 1 und einem Innenbogensegmentrahmen 2 gebildet, welche durch vier in den Eckbereichen der Segmentrahmen angeordnete, hydraulisch betätigbare Verspanneinrichtungen 3a, 3b, 3c, 3d miteinander verbunden sind, die eine vorgegebene Positionierung des Innenbogensegmentrahmen 2 zum Außenbogensegmentrahmen 1 zulassen. Damit können die in hintereinander angeordneten Rollenträger 4 gelagerten Strangführungsrollen 5 auf das Maß der Strangdicke oder bei Gießbeginn auf die Dicke des Anfahrstranges eingestellt werden. Jede Strangführungsrolle 5 ist als durchgehende, mehrfach gelagerte Rolle oder von mehreren fluchtenden Rollen gebildet. Einander gegenüberliegende Strangführungsrollen 5 bilden ein zusammenwirkendes Rollenpaar. Die Rollenträger 4 sind fest am Innenbogen- 2 bzw. Außenbogensegmentrahmen 1 befestigt. Die Rollenträger 4 können jedoch auch nur von den Lagergehäusen 6 gebildet sein, die direkt am jeweiligen Segmentrahmen befestigt sind.The strand guide is composed of individual strand guide segments, such as one in Fig. 1 is shown schematically in axonometric representation. It is formed by an outer arch segment frame 1 and an inner arch segment frame 2 which are interconnected by four hydraulically actuable bracing devices 3a, 3b, 3c, 3d arranged in the corner regions of the segment frame, which allow a predetermined positioning of the inner arch segment frame 2 to the outer arch segment frame 1. This can be done in succession arranged roller carrier 4 mounted strand guide rollers 5 can be adjusted to the degree of strand thickness or casting start on the thickness of the Anfahrstranges. Each strand guide roller 5 is formed as a continuous, multi-bearing roller or a plurality of aligned rollers. Opposite strand guide rollers 5 form a cooperating pair of rollers. The roller carriers 4 are firmly attached to the inner arch 2 or outer arch segment frame 1. However, the roller carriers 4 may also be formed only by the bearing housings 6, which are attached directly to the respective segment frame.

Fig. 2 zeigt in einem Teilschnitt der Fig. 1 einen im Innenbogensegmentrahmen 2 angeordneten Rollenträger 7, der Lagerstellen 8 trägt, die eine mehrfach gelagerte, mit einem Antrieb 9a verbundene Strangführungsrolle 5a drehbeweglich aufnehmen. Eine gleichartige angetriebene Strangführungsrolle 5b ist im Außenbogensegmentrahmen 1 gegenüberliegend angeordnet und in Fig. 1 durch den Antrieb 9b, der dem Antrieb 9a gegenüberliegt, angedeutet. Die angetriebene Strangführungsrolle 5b ist gleichermaßen wie die benachbarten im Außenbogensegmentrahmen 1 befestigten Strangführungsrollen 5 in stationären Rollenträgern 4 abgestützt. Der für die gegenüberliegende angetriebene Strangführungsrolle 5a vorgesehene verlagerbare Rollenträger 7 ist einerseits über ein Schwenkgelenk 11 mit einem ansteuerbaren Druckmittelzylinder 10 verbunden und andererseits über ein Schwenkgelenk 12 am Innenbogensegmentrahmen 2 abgestützt. Die beiden Schwenkgelenke 11, 12 bestimmen eine Verbindungslinie 13, die der Wirkungslinie der Kraftaufbringung auf dem Gießstrang entspricht und in Fig. 2 mit der Mittelachse des Druckmittelzylinders 10 zusammenfällt. Damit schneidet diese Verbindungslinie 13 die Mittelachse 14 der angetriebenen Strangführungsrolle 5a in der Mitte ihrer Längserstreckung. Damit ist eine gleichmäßige Druckverteilung auf den Gießstrang entlang der Berührungslinie von Strangführungsrolle und Gießstrang gewährleistet. Fig. 2 shows in a partial section of Fig. 1 a arranged in the inner arc segment frame 2 roller carrier 7, the bearing 8 carries bearings that receive a multi-bearing, connected to a drive 9a strand guide roller 5a rotatably. A similar driven strand guide roller 5b is disposed in the outer arch segment frame 1 opposite and in Fig. 1 indicated by the drive 9b, which is opposite to the drive 9a. The driven strand guide roller 5 b is supported in stationary roller carriers 4 in the same way as the adjacent strand guide rollers 5 fastened in the outer arch segment frame 1. The provided for the opposite driven strand guide roller 5a displaceable roller carrier 7 is connected on the one hand via a pivot joint 11 with a controllable pressure cylinder 10 and supported on the other hand via a pivot joint 12 on the inner arc segment frame 2. The two pivot joints 11, 12 determine a connecting line 13, which corresponds to the line of action of the force application on the cast strand and in Fig. 2 coincides with the central axis of the pressure medium cylinder 10. Thus, this connection line 13 intersects the central axis 14 of the driven strand guide roller 5a in the middle of its longitudinal extent. This ensures a uniform pressure distribution on the cast strand along the contact line of strand guide roll and cast strand.

Parallel zu den Verbindungslinien 13 sind Führungen 15a, 16a beidseitig am verlagerbaren Rollenträger 7 befestigt, die mit entsprechenden Gegenführungen 15b, 16b am Innenbogensegmentrahmen 2 zusammenwirken. Die Führungen 15a sind an den Breitseiten des Rollenträgers 7, etwa im Abstand einer halben Strangführungsrolle 5a von seinen Seitenrändern angeordnet. Die Führungen 16a liegen an den Stirnseiten des Rollenträgers an. Die Führungen 15a und Gegenführungen 15b stabilisieren den Rollenträger 7 in Gießrichtung G, die Führungen 16a und Gegenführungen 16b in Querrichtung dazu.Guides 15a, 16a are fastened on both sides to the displaceable roller carrier 7 in parallel with the connecting lines 13, which interact with corresponding counter-guides 15b, 16b on the inner arc segment frame 2. The guides 15a are arranged on the broad sides of the roller carrier 7, approximately at a distance of half a strand guide roller 5a of its side edges. The guides 16a bear against the end faces of the roller carrier. The guides 15a and counter guides 15b stabilize the Roller carrier 7 in the casting direction G, the guides 16a and counter guides 16b in the transverse direction thereto.

Das anhand der Fig. 1 und 2 dargestellte, in ein Strangführungssegment integrierte, von einem verlagerbaren Rollenträger 7, einem stationären Rollenträger 4, den angetriebenen Strangführungsrollen 5a, 5b, dem Druckmittelzylinder 10 und den zugeordneten Führungen 15a, 16a gebildete Strangführungselement kann auch ohne die benachbarten stationären Strangführungsrollen 5 als schmal gebautes eigenständiges Strangführungselement in der Strangführung einer Stranggießanlage angeordnet sein. Der Außenbogensegmentrahmen 1 und der Innenbogensegmentrahmen 2 reduzieren sich dadurch auf einen Führungselementrahmen 17 für den verlagerbaren Rollenträger 7 mit Druckmittelzylinder 10 und den zugeordneten Führungen 15a, 15b, 16a, 16b.That on the basis of Fig. 1 and 2 illustrated, in a strand guide segment integrated by a movable roller carrier 7, a stationary roller carrier 4, the strand drive rollers driven 5a, 5b, the pressure cylinder 10 and the associated guides 15a, 16a formed strand guide element can also without the adjacent stationary strand guide rollers 5 as a narrow self-contained strand guide element be arranged in the strand guide a continuous casting. The outer arc segment frame 1 and the inner arc segment frame 2 are thereby reduced to a guide element frame 17 for the displaceable roller carrier 7 with pressure medium cylinder 10 and the associated guides 15a, 15b, 16a, 16b.

Claims (6)

  1. Strand guide segment in a slab or thin-slab continuous casting plant, consisting of a multiplicity of strand guide rolls (5) which form cooperating pairs of rolls and which are each mounted in roll carriers (4) lying opposite one another, in each case roll carriers (4) arranged next to one another being supported in an outer arc segment frame (1) and in an inner arc segment frame (2) which, if appropriate, is displaceable in relation to the latter, at least one strand guide roll (5a, 5b) of a pair of rolls being connected to a rotary drive (9a, 9b), and the displaceable roll carrier (7) which carries a strand guide roll (5a) of this pair of rolls being connected via an adjustment device (10) to the inner arc segment frame (2) and being arranged movably in relation to the latter, characterized in that only one adjustment device (10) is arranged which engages centrically on the displaceable roll carrier (7) and on the inner arc segment frame (2), and guides (15a, 16a) on the displaceable roll carrier (7) are in engagement with counter guides (15b, 16b) on the inner arc segment frame (2).
  2. Strand guide segment according to Claim 1, characterized in that the adjustment device (10) is fastened by means of pivot joints (11, 12) to the roll carrier (7) and to the inner arc segment frame (2).
  3. Strand guide segment according to Claim 1 or 2, characterized in that the connecting line (13) of the two pivot joints (11, 12) of the adjustment device (10), the said connecting line corresponding to the line of action of the application of force, stands normally to the mid-axis (14) of the displaceable strand guide rolls (5a).
  4. Strand guide segment according to one of Claims 1 to 3, characterized in that the connecting line (13) of the two pivot joints (11, 12) intersects the mid-axes (14) of the strand guide rolls (5a, 5b) forming a pair of rolls.
  5. Strand guide segment according to one of Claims 1 to 4, characterized in that the adjustment device (10) is formed by a hydraulic cylinder.
  6. Strand guide segment according to one of Claims 1 to 5, characterized in that the guides (15a, 16) on the roll carrier (7) and the counter guides (15b, 16b) on the inner arc segment frame (2) form contact surfaces which are oriented parallel to the connecting line (13) of the two pivot joints (11, 12) of the adjustment device (10).
EP06020534A 2000-06-02 2001-04-20 Strand guide segment Expired - Lifetime EP1752238B1 (en)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
AT0041500U AT3953U3 (en) 2000-06-02 2000-06-02 STRING GUIDING ELEMENT AND STRING GUIDING SEGMENT WITH INTEGRATED STRING GUIDING ELEMENT
EP01933864A EP1289689B1 (en) 2000-06-02 2001-04-20 Strand guide element

Related Parent Applications (2)

Application Number Title Priority Date Filing Date
EP01933864A Division EP1289689B1 (en) 2000-06-02 2001-04-20 Strand guide element
EP01933864.9 Division 2001-04-20

Publications (3)

Publication Number Publication Date
EP1752238A2 EP1752238A2 (en) 2007-02-14
EP1752238A3 EP1752238A3 (en) 2008-08-13
EP1752238B1 true EP1752238B1 (en) 2010-06-16

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EP01933864A Expired - Lifetime EP1289689B1 (en) 2000-06-02 2001-04-20 Strand guide element
EP06020534A Expired - Lifetime EP1752238B1 (en) 2000-06-02 2001-04-20 Strand guide segment

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EP01933864A Expired - Lifetime EP1289689B1 (en) 2000-06-02 2001-04-20 Strand guide element

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EP (2) EP1289689B1 (en)
CN (1) CN1184034C (en)
AT (1) AT3953U3 (en)
BR (1) BR0111391B1 (en)
DE (2) DE50115522D1 (en)
WO (1) WO2001094051A1 (en)

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DE102004048618A1 (en) * 2004-10-06 2006-04-13 Sms Demag Ag Method and roller segment for determining the core solidification and / or the sump tip in the continuous casting of metals, in particular of steel materials
DE102005028703A1 (en) * 2005-06-20 2006-12-28 Siemens Ag Regulating and or controlling method e.g. for adjusting segment in continuous casting installation, involves having lower frame and upper frame positioned in relation to each other by adjusting elements
US8302662B2 (en) * 2008-01-14 2012-11-06 Sms Concast Ag Continuous casting plant particularly for long steel products, and a method for continuous casting
AT506549B1 (en) 2008-03-28 2011-06-15 Siemens Vai Metals Tech Gmbh TRAIN TOUR SEGMENT
AT506846B1 (en) * 2008-05-23 2011-08-15 Siemens Vai Metals Tech Gmbh TRAIN TOUR SEGMENT
DE102008025548A1 (en) * 2008-05-28 2009-12-03 Sms Siemag Aktiengesellschaft Strand guide, in particular for a continuous steel slab caster
AT509352B1 (en) * 2010-02-05 2014-06-15 Siemens Vai Metals Tech Gmbh ROAD GUIDE SEGMENT IN CASSETTE CONSTRUCTION WITH SINGLE ROLLING
DE102011003194A1 (en) * 2010-05-19 2011-11-24 Sms Siemag Ag roller device
AT510178A2 (en) 2010-07-27 2012-02-15 Siemens Vai Metals Tech Gmbh DEVICE FOR LIMITING THE SLICING OF AN ADJUSTABLE WHEEL SUPPORT
AT512214B1 (en) * 2011-12-05 2015-04-15 Siemens Vai Metals Tech Gmbh PROCESS ENGINEERING MEASURES IN A CONTINUOUS CASTING MACHINE AT THE CASTING STAGE, AT THE CASTING END AND AT THE PRODUCTION OF A TRANSITION PIECE
DE102014202995A1 (en) 2013-09-16 2015-03-19 Sms Siemag Ag Frame for a strand guide segment
DE102014206685A1 (en) 2013-12-23 2015-06-25 Sms Siemag Ag Adjustment device in a device for Kühlmittelbedüsung in a metallurgical plant
CN104057049B (en) * 2014-07-09 2016-06-15 北京科技大学 The continuous casting machine fan-shaped segment of the big pressure of continuous casting billet solidifying end and big reduction method thereof
AT516412B1 (en) * 2014-10-28 2017-07-15 Primetals Technologies Austria GmbH Strand guide roller unit for a continuous casting machine
CN108015244B (en) * 2017-12-05 2023-11-14 马鞍山钢铁股份有限公司 Sector section structure of continuous casting machine
AT521416B1 (en) * 2018-07-02 2024-01-15 Primetals Technologies Austria GmbH Strand guide segment with individually movable strand guide rollers
CN113369449A (en) * 2021-05-19 2021-09-10 宣化钢铁集团有限责任公司 Dual-drive arc-shaped transmission device

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DE19745056A1 (en) * 1997-10-11 1999-04-15 Schloemann Siemag Ag Process and plant for producing slabs in a continuous caster

Also Published As

Publication number Publication date
AT3953U2 (en) 2000-11-27
BR0111391B1 (en) 2009-01-13
AT3953U3 (en) 2001-04-25
DE50112740D1 (en) 2007-08-30
EP1289689A1 (en) 2003-03-12
CN1184034C (en) 2005-01-12
EP1752238A3 (en) 2008-08-13
EP1752238A2 (en) 2007-02-14
BR0111391A (en) 2003-06-10
WO2001094051A1 (en) 2001-12-13
EP1289689B1 (en) 2007-07-18
CN1431942A (en) 2003-07-23
DE50115522D1 (en) 2010-07-29

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