EP3934828B1 - Strand guide and method for guiding a cast strand from a mould - Google Patents

Strand guide and method for guiding a cast strand from a mould Download PDF

Info

Publication number
EP3934828B1
EP3934828B1 EP20710473.8A EP20710473A EP3934828B1 EP 3934828 B1 EP3934828 B1 EP 3934828B1 EP 20710473 A EP20710473 A EP 20710473A EP 3934828 B1 EP3934828 B1 EP 3934828B1
Authority
EP
European Patent Office
Prior art keywords
segment
strip
travel
strand
strip guide
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.)
Active
Application number
EP20710473.8A
Other languages
German (de)
French (fr)
Other versions
EP3934828A1 (en
Inventor
Martin Becker
Klaus-Peter Eberwein
Axel Stavenow
Ulrich Kerp
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.)
SMS Group GmbH
Original Assignee
SMS Group GmbH
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
Application filed by SMS Group GmbH filed Critical SMS Group GmbH
Publication of EP3934828A1 publication Critical patent/EP3934828A1/en
Application granted granted Critical
Publication of EP3934828B1 publication Critical patent/EP3934828B1/en
Active legal-status Critical Current
Anticipated expiration legal-status Critical

Links

Images

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
    • B22D11/12—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
    • B22D11/14—Plants for continuous casting
    • 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
    • B22D11/16—Controlling or regulating processes or operations
    • B22D11/20—Controlling or regulating processes or operations for removing cast stock

Definitions

  • the invention relates to a strand guide and a method for guiding a cast strand after it has emerged from a mold.
  • the mold and the strand guide are typically components of a casting plant for casting metal, in particular steel.
  • the German Offenlegungsschrift DE 10 2010 054 398 A1 discloses a continuous casting plant with a continuous casting mold and a strand guide which is connected to the continuous casting mold in the casting direction.
  • the strand guide consists of a plurality of strand guide segments arranged one behind the other in the casting direction.
  • a first and a second strand guide segment can each be aligned horizontally on an oscillator base frame.
  • the second strand guide segment is supported with its foot area for horizontal and vertical position determination on a segment support frame.
  • the German Offenlegungsschrift DE 10 2017 117 634 A1 relates to a continuous casting plant, on the continuous casting mold of which there are several, each with strand guide rollers connect provided segments.
  • the segments are arranged on a support structure and are each connected to the support structure at a number of bearing points. At least one of the bearing points of the segment directly adjoining the continuous casting mold is a floating bearing.
  • the international Patent application WO 2009/141210 discloses a continuous casting installation with a mold and a strand guide connected to the mold, the strand guide comprising a plurality of strand guide segments.
  • Each strand guide segment is supported by a segment support frame in the structure of the continuous caster.
  • the first strand-guiding segment immediately following the mold is detachably fastened to the first segment support frame on essentially vertical support surfaces and can be removed from and installed in the continuous casting plant independently of the following strand-guiding segments.
  • At least the last strand guide segment supported on the first segment support frame forms a structural unit exclusively together with this and is designed so that it can be removed from and installed in the continuous casting plant.
  • the invention is based on the object of developing a known strand guide and a known method for its operation such that the risk of damage to strand guide rollers in a segment or to the inner walls or the copper plates of the mold by a dummy strand guided in the strand guide is reduced.
  • the at least one travel limiting element is designed to be adjustable to its stop position to limit the displacement path of the segment or to a rest position to release the displacement path of the segment in the x-direction; and that a control device (150) is provided for moving at least one of the travel limiting elements (140-1, ... -3) into its respective stop position during the movement of a dummy bar in the strand guide or during casting and for moving the travel limiting element back out of its position Stop position in its rest position, in which the displacement in the x-direction for the segment (110) is released during a casting operation.
  • z basically designates the vertical and x and y basically span a horizontal plane.
  • y denotes the widthwise direction of the strand
  • x denotes the direction perpendicular to the broadside of the cast strand.
  • said coordinates are not limited to purely vertical and purely horizontal. Rather, the z-direction can also mean the pouring direction.
  • the x, y plane is then also perpendicular to the z direction.
  • the x-direction designates the radial direction of the arc of the strand guidance.
  • the y-direction always remains the width direction of the cast strand.
  • segment as part of a strand guide means an upper frame and a lower frame, on each of which strand guide rollers are rotatably mounted.
  • the upper frame and the lower frame are typically connected to each other via four tie rods or hydraulic cylinders.
  • the strand guide rollers of the upper frame and the strand guide rollers of the lower frame are arranged opposite one another and form a channel for guiding the cast strand when it is pulled out of the mold.
  • a plurality of segments are typically arranged one behind the other in the casting direction for guiding the cast strand.
  • segment zero refers to the first segment in the strand guide in the casting direction behind the mold.
  • the claimed path limiting elements are advantageously used for the targeted setting of a guide path for, in particular, the dummy bar within a bar guide.
  • the freedom of movement of the segments in the x-direction is limited to such stop positions that the risk of damage to the inner walls or the copper plates of the mold or the strand guide rollers of adjacent segments, in particular by a Dummy strand introduced into the strand guide counter to the casting direction is advantageously very significantly reduced.
  • the claimed travel limitation for a segment advantageously takes place only before the start of an actual casting sequence, namely during the entry of the dummy bar into the strand guide and/or during casting, i.e. when the dummy bar with the front end of the cast bar attached thereto is pulled out of the mold and the strand guide in the direction of casting.
  • the travel limitation is advantageously lifted, so that the segment, in particular the zero segment, is then freely movably mounted in the x-direction, i.e. at least no longer limited by the travel limitation elements is.
  • a control device for moving at least one of the path limiting elements into its respective stop position during the movement of a dummy bar in the bar guide or during casting. Furthermore, the control device is designed to retract at least one of the path-limiting elements from its stop position into a rest position, in which the displacement in the x-direction for the segment is released during a casting operation.
  • the control device is designed in the form of a manually operated changeover switch. Alternatively, however, it can also be designed for electronic or hydraulic or pneumatic control and adjustment of the travel limiting elements.
  • the path limiting element is an upper path limiting element on the fixed side, which is preferably designed to be adjustable to limit the displacement path of the segment mounted on the floating bearing in the x-direction to a stop position in which the rear edge of the strand is aligned on the input side of the segment on the trailing edge of the strand of the segment located in front upstream of the casting direction - or, if the segment mounted on the movable bearing is the Segment zero acts - is aligned with the trailing edge of the strand of the mold outlet upstream of the casting direction.
  • the term “rear edge of strand” means less the strand itself, but rather the stop position for the strand defined by the strand guide rollers on the fixed side of the segments, in particular at its rear edge when it is guided through the segments.
  • the term “front edge of the strand” means the stop position for the strand defined by the strand guide rollers on the loose side of the segments.
  • the travel-limiting element can also be a loose-side, upper travel-limiting element.
  • This is preferably designed to be adjustable in order to limit the displacement path of the segment mounted on the floating bearing in the x-direction to a stop position in which the front edge of the strand on the input side of the segment is aligned with the front edge of the strand of the segment located upstream of the casting direction - or, if it is the segment mounted on the loose bearing is segment zero - is aligned with the front edge of the strand of the outlet of the mold upstream of the casting direction.
  • a fixed-side, lower path-limiting element can also be provided and preferably designed to be adjustable to limit the displacement path of the segment mounted on the floating bearing in the x-direction to a stop position in which the trailing edge of the strand on the output side of the segment is aligned with the trailing edge of the strand of the Input side of the following segment in the casting direction is aligned.
  • This alignment has the specific advantage that damage caused by the dummy bar head on the strand guide rollers on the output side of a segment, in particular the zero segment in the strand guide, is prevented.
  • All three described exemplary embodiments offer the advantage that the path for a dummy bar in a strand guide in the x-direction, i.e. laterally, is limited in such a way that the dummy bar does not hit a strand guide roller or the inside of the mold and does not damage it by hitting it .
  • the upper and/or lower path-limiting elements can be designed to be damped by springs, either disk spring assemblies or coil springs, or by an elastomer. This advantageously prevents damage to the surface of the cast strand.
  • the path limiting elements can be designed as plunger cylinders or as hydraulic cylinders. At least one displacement measuring device and/or one pressure measuring device is preferably assigned to the travel limiting elements for detecting the respective position of the travel limiting elements or their displacement paths and/or for detecting the pressures on the contact surface of the travel limiting elements Strand, each preferably as a function of time. These functionalities advantageously enable a statistical evaluation of the movement of the segment, in particular the zero segment, in various phases before and during a casting process.
  • figure 1 shows a casting system with a mold 200 and a strand guide 100 downstream of the mold in the casting direction G.
  • the strand guide serves to guide a cast strand after it has exited the mold 200 arranged segments 110-0, 110-1, wherein the segment zero 100-0 denotes the first segment in the casting direction G behind the mold 200.
  • the zero segment is rotatably mounted on a rotary bearing 120 about the y-axis.
  • the pivot bearing 120 in figure 1 arranged at the exit of the mold 200 facing input side of segment zero. Its axis of rotation is advantageously at the same height or on a line with the axes of rotation of the two first strand guide rollers 112 on the entry side E of segment zero 110-0.
  • the rotary bearing 120 is mounted in a receptacle 130 such that it can be displaced in the x-direction.
  • the pivot bearing 120 and the receptacle 130 together form a floating bearing.
  • the receptacle 130 is fixedly arranged, for example, on the support frame of an oscillator device (not shown) for the mold, this support frame in turn being connected to the foundation.
  • the segment is rotatably mounted on the pivot bearing and, together with the pivot bearing, can be displaced in the x-direction within the receptacle.
  • pivot bearing it would also be possible for the pivot bearing to be firmly connected to the foundation and for the receptacle (130) to be rotatably mounted on the pivot bearing (120) with the segment (110) connected thereto so that it can be displaced in the x-direction.
  • figure 2 shows the receptacle 130 for the pivot bearing 120 in a perspective detail view.
  • a plurality of path limiting elements 140-n with n 1 (Not shown).
  • the pivot bearing (120) also limits the freedom of movement in the x-direction of segment zero 110-0, which is pendulously suspended from the pivot bearing, on the fixed side 100-F and preferably also on the loose side 100-L of the strand guide 100.
  • the upper path limiting element 140-1 is preferably adjustable to limit the displacement of the rotary bearing 120 or the segment on the fixed side 100-F of the strand guide to such a stop position that the "rear edge of strand" on the input side of the segment is zero 110-0 aligned with the "rear edge strand” of the outlet of the mold 200.
  • the upper travel limiting element 140-2 on the loose side is designed to be adjustable, so that the displacement of the rotary bearing or segment on the loose side 100-L of the strand guide 100 is limited to such a stop position that the "front edge of the strand" 111-2 on the input side of the Segment zero 110-0 is aligned with the "leading edge strand" of the outlet of the mold 200.
  • the path limiting elements are typically designed in the form of plunger cylinders or hydraulic cylinders. They can be dampened, for example by means of disk spring assemblies 165, as in figure 2 shown. Alternatively, the disc spring packs can also be replaced by a spiral spring or by an elastomer as a buffer element.
  • the strand guide 100 also has a lower limiting element 140-3 which is attached to the Segment support frame or is attached to an upper bearing of the support frame.
  • the lower path-limiting element 140-3 serves to limit the pendulum and/or displacement movement of segment zero in the x-direction on the fixed side 100-F of the strand guide.
  • the lower movement element 140-3 can be adjusted to such a stop position in which the "rear edge of line” 116-1 on the output side of segment zero is aligned with the "rear edge of line” 116-2 of the input side of subsequent segment one 110-1 is.
  • the lower path limiting element 140-3 can be designed in the same way as the upper path limiting elements 140-1, 140-2 in the form of plunger or hydraulic cylinders, each with or without buffer elements.
  • a displacement measuring device 160 can be assigned to the upper and/or lower displacement limiting element 140, as shown in FIG figure 2 can be seen.
  • the path measuring device 160 is used to record the stop positions of the path limiting elements, preferably as a function of time, for statistical or evaluation purposes.
  • each of the travel limiting elements 140 can also be assigned a pressure measuring device 170 for detecting the forces that may be exerted on the (cold) leg by the travel limiting elements in their stop positions.
  • the path-limiting elements in the form of plunger or hydraulic cylinders are preferably integrated into the side walls of receptacle 130, as is shown in figure 2 is shown.
  • This arrangement of the path limiting elements 140 is particularly recommended for the in figure 1 shown exemplary oscillating suspension of the zero segment on its input side facing the output of the mold 200 .
  • this oscillating suspension of the zero segment is by no means mandatory; rather, the segment zero with the help of the pivot bearing 120 as well for example, be rotatably mounted at its center of gravity, as in figure 3 shown.
  • a travel limitation in the x-direction at the height of the pivot bearing would then make little sense, because with a travel limitation there at the height of the center of gravity, neither the input side of the segment has access to the upstream components, be it a mold or an upstream segment, nor the output of the segment could be aligned with the entrance of a subsequent segment.
  • the present invention provides that the path limiting elements - regardless of the location of the rotary bearing of the segment - are always arranged at the level of the input side and/or on the output side of the segment, as is shown in figure 3 is shown. Only then is it guaranteed that the path limiting elements 140 guarantee their intended function, namely ensuring a smooth transition from a strand guided in the segment to an upstream component, be it a mold or an upstream segment, or to a downstream segment.
  • this fourth possible path limiting element 140-4 on the loose side at the exit of segment zero. It is used to limit the pendulum and/or displacement movement of segment zero in the x-direction on the loose side 100-L of the strand guide 100. Specifically, this fourth travel limiting element 140-4 can be set to such a stop position that the leading edge of the strand at the loose-side exit of the segment is aligned with the leading edge of the strand at the loose-end entrance of the following segment.
  • a dummy bar is typically run counter to the casting direction G through the segments up to the outlet of mold 200 introduced.
  • the dummy bar is used to close the mold before it is filled with molten metal for a new casting sequence.
  • the dummy bar then typically connects to the front end of the cast strand and is used to pull the still fresh cast strand out of the mold 200 (casting).
  • the direction of movement of the dummy bar is then reversed and it is pulled out of the strand guide in the casting direction.
  • the movement of segment zero in the x-direction is preferably also limited at its exit.
  • the movement of the output side of the zero segment that takes place there in the x-direction due to a pendulum and/or displacement movement of the zero segment is limited to a stop position in which the rear edge strand 116-1 on the output side A of the zero segment is aligned with the "rear edge Strand" 116-2 of the input side E of the subsequent segment one is aligned.
  • At least one of the travel limitation elements 140 is moved from a rest position to its respective stop position with the aid of a control device 150 .
  • said travel limitation for segment zero can be abandoned at its input side E and/or at its output side A for a subsequent casting operation.
  • the respective path limiting element 140-1 . . . -4 then moves—controlled by a control device 150—from its stop position to a rest position.
  • the segment zero is then freely movable in the x-direction--preferably within predetermined enlarged travel limits--in the x-direction and it can oscillate freely about the y-axis in the rotary bearing 120.
  • said release of the zero segment enables self-alignment of the zero segment in the x-direction, in particular during the casting operation, i. H.
  • segment zero advantageously always automatically aligns itself correctly during the casting operation with its input side toward the output of the mold 200 and with its output side toward the input of the following segment one.
  • the alignment is always done in such a way that as few forces as possible have to be applied to guide the cast strand.
  • the core idea according to the invention of limiting the travel of the segments of a strand guide in the x-direction was described in the above-described exemplary embodiments with reference to the figures primarily for the first segment in the casting direction behind the mold, ie for segment zero. However, this core idea is equally applicable to any other segment in a strand guide. Also, their shift in the x-direction is due to the path limiting elements
  • the entry side and/or the exit side can be limited on the fixed side and/or on the loose side. This applies regardless of whether the rotary bearing for rotatably supporting the segment is attached to its entry side, in its center of gravity or on its exit side or at any other point in relation to the segment.
  • the path limitation in the x-direction then takes place on the input side - in contrast to segment zero, in which the input side was aligned with the output of the mold - on the output of the upstream segment in the casting direction.

Landscapes

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

Description

Die Erfindung betrifft eine Strangführung und ein Verfahren zum Führen eines Gießstrangs nach seinem Austritt aus einer Kokille. Die Kokille und die Strangführung sind typischerweise Bestandteile einer Gießanlage zum Gießen von Metall, insbesondere von Stahl.The invention relates to a strand guide and a method for guiding a cast strand after it has emerged from a mold. The mold and the strand guide are typically components of a casting plant for casting metal, in particular steel.

Aus der nicht vorveröffentlichten deutschen Patentanmeldung mit dem Aktenzeichen DE 10 2017 221 756.1 ist eine Strangführung mit einer Mehrzahl von in Gießrichtung hintereinander angeordneten Segmenten bekannt, wobei ein Segment Null das erste Segment in Gießrichtung hinter der Kokille ist. Des Weiteren ist aus dieser Patentanmeldung ein Drehlager für das Segment Null bekannt zum Verbinden des Segmentes Null mit der Festseite der Strangführung. Darüber hinaus ist das Segment in x-Richtung frei verschieblich. Dadurch besteht die Gefahr, dass der Kaltstrang bei seiner Einführung in die Kokille die Kupferplatten an der Innenseite der Kokille beschädigen könnte.From the unpublished German patent application with the reference number DE 10 2017 221 756.1 a strand guide with a plurality of segments arranged one behind the other in the casting direction is known, with a zero segment being the first segment behind the mold in the casting direction. Furthermore, from this patent application, a rotary bearing for the zero segment is known for connecting the zero segment to the fixed side of the strand guide. In addition, the segment can be moved freely in the x-direction. As a result, there is a risk that the dummy bar could damage the copper plates on the inside of the mold when it is introduced into the mold.

Die deutsche Offenlegungsschrift DE 10 2010 054 398 A1 offenbart eine Stranggießanlage mit einer Stranggießkokille und einer in Gießrichtung an die Stranggießkokille anschließenden Strangführung. Die Strangführung besteht aus einer Mehrzahl von in Gießrichtung hintereinander angeordneten Strangführungssegmenten. Ein erstes und ein zweites Strangführungssegment sind jeweils an einem Oszillatorgrundrahmen horizontal ausrichtbar. Darüber hinaus ist das zweite Strangführungssegment mit seinem Fußbereich zur horizontalen und zur vertikalen Lagebestimmung an einem Segmenttragrahmen abgestützt.The German Offenlegungsschrift DE 10 2010 054 398 A1 discloses a continuous casting plant with a continuous casting mold and a strand guide which is connected to the continuous casting mold in the casting direction. The strand guide consists of a plurality of strand guide segments arranged one behind the other in the casting direction. A first and a second strand guide segment can each be aligned horizontally on an oscillator base frame. In addition, the second strand guide segment is supported with its foot area for horizontal and vertical position determination on a segment support frame.

Die deutsche Offenlegungsschrift DE 10 2017 117 634 A1 betrifft eine Stranggießanlage, an deren Stranggießkokille sich mehrere, jeweils mit Strangführungsrollen versehene Segmente anschließen. Die Segmente sind auf einer Trägerkonstruktion angeordnet und an jeweils mehreren Lagerpunkten mit der Trägerkonstruktion verbunden. Zumindest einer der Lagerpunkte des sich direkt an die Stranggießkokille anschließenden Segmentes ist ein Loslager.The German Offenlegungsschrift DE 10 2017 117 634 A1 relates to a continuous casting plant, on the continuous casting mold of which there are several, each with strand guide rollers connect provided segments. The segments are arranged on a support structure and are each connected to the support structure at a number of bearing points. At least one of the bearing points of the segment directly adjoining the continuous casting mold is a floating bearing.

Die internationale Patentanmeldung WO 2009/141210 offenbart eine Stranggießanlage mit einer Kokille und einer sich an die Kokille anschließenden Strangführung, wobei die Strangführung eine Mehrzahl von Strangführungssegmenten umfasst. Jedes Strangführungssegment ist über einen Segmenttragrahmen im Anlagentragwerk der Stranggießanlage abgestützt. Das erste der Kokille unmittelbar nachfolgende Strangführungssegment ist lösbar am ersten Segmenttragrahmen an im Wesentlichen Vertikalstützflächen befestigt und unabhängig von den nachfolgenden Strangführungssegmenten aus der Stranggießanlage aus- und in diese einbaubar ausgebildet. Zumindest das letzte am ersten Segmenttragrahmen abgestützte Strangführungssegment bildet ausschließlich gemeinsam mit diesem eine Baueinheit und ist aus der Stranggießanlage aus- und in diese einbaubar ausgebildet.The international Patent application WO 2009/141210 discloses a continuous casting installation with a mold and a strand guide connected to the mold, the strand guide comprising a plurality of strand guide segments. Each strand guide segment is supported by a segment support frame in the structure of the continuous caster. The first strand-guiding segment immediately following the mold is detachably fastened to the first segment support frame on essentially vertical support surfaces and can be removed from and installed in the continuous casting plant independently of the following strand-guiding segments. At least the last strand guide segment supported on the first segment support frame forms a structural unit exclusively together with this and is designed so that it can be removed from and installed in the continuous casting plant.

Der Erfindung liegt die Aufgabe zugrunde, eine bekannte Strangführung sowie ein bekanntes Verfahren zu deren Betrieb dahingehend weiterzubilden, dass das Risiko einer Beschädigung von Strangführungsrollen bei einem Segment oder der der Innenwände bzw. der Kupferplatten der Kokille durch einen in der Strangführung geführten Kaltstrang reduziert wird.The invention is based on the object of developing a known strand guide and a known method for its operation such that the risk of damage to strand guide rollers in a segment or to the inner walls or the copper plates of the mold by a dummy strand guided in the strand guide is reduced.

Diese Aufgabe wird durch den Gegenstand des Patentanspruchs 1 gelöst. Demnach ist die beanspruchte Strangführung das mindestens eine Wegbegrenzungselement wahlweise auf seine Anschlagsposition einstellbar ausgebildet ist zum Begrenzen des Verschiebeweges des Segmentes oder auf eine Ruheposition einstellbar ausgebildet ist zum Freigeben des Verschiebeweges des Segmentes in x-Richtung; und dass eine Steuereinrichtung (150) vorgesehen ist zum Fahren mindestens eines der Wegbegrenzungselemente (140-1, ... -3) in seine jeweilige Anschlagposition während des Verfahrens eines Kaltstrangs in der Strangführung oder während eines Angießens und zum Zurückfahren des Wegbegrenzungselementes aus seiner Anschlagposition in seine Ruheposition, in welcher die Verschiebung in x-Richtung für das Segment (110) während eines Gießbetriebs freigegeben ist.This object is solved by the subject matter of patent claim 1. According to the claimed strand guide, the at least one travel limiting element is designed to be adjustable to its stop position to limit the displacement path of the segment or to a rest position to release the displacement path of the segment in the x-direction; and that a control device (150) is provided for moving at least one of the travel limiting elements (140-1, ... -3) into its respective stop position during the movement of a dummy bar in the strand guide or during casting and for moving the travel limiting element back out of its position Stop position in its rest position, in which the displacement in the x-direction for the segment (110) is released during a casting operation.

Für die Definition der x-, y- und z-Richtung gilt das in den Figuren angegebene Koordinatensystem. Dabei bezeichnet z grundsätzlich die Vertikale und x und y spannen grundsätzlich eine Ebene in der Horizontalen auf. Insbesondere bezeichnet y die Breitenrichtung des Strangs und x die Richtung senkrecht zur Breitseite des Gießstrangs. Zur Beschreibung der vorliegenden Erfindung sind die besagten Koordinaten jedoch nicht nur auf die reine Vertikale und die reine Horizontale beschränkt. Vielmehr kann die z-Richtung auch die Gießrichtung meinen. Die x-, y-Ebene steht auch dann senkrecht auf der z-Richtung. Bei bogenförmiger Strangführung bezeichnet die x-Richtung dann die radiale Richtung des Bogens der Strangführung. Die y-Richtung bleibt immer die Breitenrichtung des Gießstrangs.The coordinate system given in the figures applies to the definition of the x, y and z directions. In this case, z basically designates the vertical and x and y basically span a horizontal plane. In particular, y denotes the widthwise direction of the strand and x denotes the direction perpendicular to the broadside of the cast strand. However, for the purpose of describing the present invention, said coordinates are not limited to purely vertical and purely horizontal. Rather, the z-direction can also mean the pouring direction. The x, y plane is then also perpendicular to the z direction. In the case of arcuate strand guidance, the x-direction then designates the radial direction of the arc of the strand guidance. The y-direction always remains the width direction of the cast strand.

Der Begriff "Segment" als Teil einer Strangführung meint einen Oberrahmen und einen Unterrahmen, an denen jeweils Strangführungsrollen drehbar gelagert sind. Der Oberrahmen und der Unterrahmen sind über typischerweise vier Zuganker oder Hydraulikzylinder miteinander verbunden. Die Strangführungsrollen des Oberrahmens und die Strangführungsrollen des Unterrahmens sind einander gegenüberliegend angeordnet und bilden einen Kanal zur Führung des Gießstrangs, wenn dieser aus der Kokille ausgezogen wird. In der Strangführung sind typischerweise eine Mehrzahl von Segmenten in Gießrichtung hintereinander angeordnet zum Führen des Gießstrangs.The term "segment" as part of a strand guide means an upper frame and a lower frame, on each of which strand guide rollers are rotatably mounted. The upper frame and the lower frame are typically connected to each other via four tie rods or hydraulic cylinders. The strand guide rollers of the upper frame and the strand guide rollers of the lower frame are arranged opposite one another and form a channel for guiding the cast strand when it is pulled out of the mold. In the strand guide, a plurality of segments are typically arranged one behind the other in the casting direction for guiding the cast strand.

Der Begriff "Segment Null" bezeichnet das erste Segment in der Strangführung in Gießrichtung hinter der Kokille.The term "segment zero" refers to the first segment in the strand guide in the casting direction behind the mold.

Die beanspruchten Wegbegrenzungselemente dienen vorteilhafterweise zum gezielten Einstellen eines Führungsweges für insbesondere den Kaltstrang innerhalb einer Strangführung. Mit Hilfe der Wegbegrenzungselemente wird die Bewegungsfreiheit der Segmente in x-Richtung auf solche Anschlagpositionen begrenzt, dass das Risiko einer Beschädigung der Innenwände bzw. der Kupferplatten der Kokille oder der Strangführungsrollen von benachbarten Segmenten, insbesondere durch einen entgegen der Gießrichtung in die Strangführung eingeführten Kaltstrang vorteilhafterweise sehr deutlich reduziert wird.The claimed path limiting elements are advantageously used for the targeted setting of a guide path for, in particular, the dummy bar within a bar guide. With the help of the path limiting elements, the freedom of movement of the segments in the x-direction is limited to such stop positions that the risk of damage to the inner walls or the copper plates of the mold or the strand guide rollers of adjacent segments, in particular by a Dummy strand introduced into the strand guide counter to the casting direction is advantageously very significantly reduced.

Die beanspruchte Wegbegrenzung für ein Segment, insbesondere für das Segment Null, erfolgt vorteilhafterweise nur vor Beginn einer eigentlichen Gießsequenz, nämlich während dem Einfahren des Kaltstrangs in die Strangführung und/oder während eines Angießens, d.h. wenn der Kaltstrang mit dem daran angelagerten vorderen Ende des Gießstrangs in Gießrichtung aus der Kokille und der Strangführung herausgezogen wird. Danach, d.h. nachdem der Kaltstrang von dem Gießstrang abgetrennt wurde und während des eigentlichen Gießbetriebes wird die Wegbegrenzung vorteilhafterweise aufgehoben, so dass das Segment, insbesondere das Segment Null, dann in x-Richtung frei, d.h. zumindest nicht mehr begrenzt durch die Wegbegrenzungselemente, beweglich gelagert ist.The claimed travel limitation for a segment, in particular for the zero segment, advantageously takes place only before the start of an actual casting sequence, namely during the entry of the dummy bar into the strand guide and/or during casting, i.e. when the dummy bar with the front end of the cast bar attached thereto is pulled out of the mold and the strand guide in the direction of casting. After that, i.e. after the dummy bar has been separated from the cast strand and during the actual casting operation, the travel limitation is advantageously lifted, so that the segment, in particular the zero segment, is then freely movably mounted in the x-direction, i.e. at least no longer limited by the travel limitation elements is.

Um die Wegbegrenzungselemente entsprechend anzusteuern, ist eine Steuereinrichtung vorgesehen zum Fahren mindestens eines der Wegbegrenzungselemente in seine jeweilige Anschlagposition während des Verfahrens eines Kaltstrangs in der Strangführung oder während eines Angießens. Weiterhin ist die Steuereinrichtung ausgebildet zum Zurückfahren mindestens eines der Wegbegrenzungselemente aus seiner Anschlagposition in eine Ruheposition, in welcher die Verschiebung in x-Richtung für das Segment während eines Gießbetriebs freigegeben ist. Die Steuereinrichtung ist im einfachsten Fall in Form eines manuell bedienbaren Umschalters ausgebildet. Alternativ kann sie jedoch auch ausgebildet sein für eine elektronische oder hydraulische oder pneumatische Ansteuerung und Einstellung der Wegbegrenzungselemente.In order to control the path limiting elements accordingly, a control device is provided for moving at least one of the path limiting elements into its respective stop position during the movement of a dummy bar in the bar guide or during casting. Furthermore, the control device is designed to retract at least one of the path-limiting elements from its stop position into a rest position, in which the displacement in the x-direction for the segment is released during a casting operation. In the simplest case, the control device is designed in the form of a manually operated changeover switch. Alternatively, however, it can also be designed for electronic or hydraulic or pneumatic control and adjustment of the travel limiting elements.

Gemäß einem ersten Ausführungsbeispiel handelt es sich bei dem Wegbegrenzungselement um ein festseitiges oberes Wegbegrenzungselement, welches vorzugsweise einstellbar ausgebildet ist zum Begrenzen des Verschiebeweges des an dem Loslager gelagerten Segmentes in x-Richtung auf eine Anschlagposition, in welcher die Hinterkante Strang an der Eingangsseite des Segmentes fluchtend auf die Hinterkante Strang des stromaufwärts der Gießrichtung vorgelagerten Segmentes - oder, wenn es sich bei dem an dem Loslager gelagerten Segment um das Segment Null handelt - auf die Hinterkante Strang des stromaufwärts der Gießrichtung vorgelagerten Ausgangs der Kokille ausgerichtet ist.According to a first exemplary embodiment, the path limiting element is an upper path limiting element on the fixed side, which is preferably designed to be adjustable to limit the displacement path of the segment mounted on the floating bearing in the x-direction to a stop position in which the rear edge of the strand is aligned on the input side of the segment on the trailing edge of the strand of the segment located in front upstream of the casting direction - or, if the segment mounted on the movable bearing is the Segment zero acts - is aligned with the trailing edge of the strand of the mold outlet upstream of the casting direction.

Der Begriff "Hinterkante Strang" meint im Rahmen der vorliegenden Beschreibung weniger den Strang selber, sondern die durch die Strangführungsrollen auf der Festseite der Segmente definierte Anschlagsposition für den Strang, insbesondere zu dessen Hinterkante, wenn er durch die Segmente hindurchgeführt wird. Analog meint der Begriff "Vorderkante Strang" die durch die Strangführungsrollen auf der Losseite der Segmente definierte Anschlagsposition für den Strang.In the context of the present description, the term "rear edge of strand" means less the strand itself, but rather the stop position for the strand defined by the strand guide rollers on the fixed side of the segments, in particular at its rear edge when it is guided through the segments. Analogously, the term "front edge of the strand" means the stop position for the strand defined by the strand guide rollers on the loose side of the segments.

Alternativ oder zusätzlich zu dem festseitigen oberen Verschiebungslager kann auch es sich gemäß einem zweiten Ausführungsbeispiel bei dem Wegbegrenzungselement auch um ein losseitiges oberes Wegbegrenzungselement handeln. Dieses ist vorzugsweise einstellbar ausgebildet zum Begrenzen des Verschiebeweges des an dem Loslager gelagerten Segmentes in x-Richtung auf eine Anschlagposition, in welcher die Vorderkante Strang an der Eingangsseite des Segmentes fluchtend auf die Vorderkante Strang des stromaufwärts der Gießrichtung vorgelagerten Segmentes - oder, wenn es sich bei dem an dem Loslager gelagerten Segment um das Segment Null handelt - auf die Vorderkante Strang des stromaufwärts der Gießrichtung vorgelagerten Ausgangs der Kokille ausgerichtet ist.Alternatively or in addition to the fixed-side upper displacement bearing, according to a second exemplary embodiment, the travel-limiting element can also be a loose-side, upper travel-limiting element. This is preferably designed to be adjustable in order to limit the displacement path of the segment mounted on the floating bearing in the x-direction to a stop position in which the front edge of the strand on the input side of the segment is aligned with the front edge of the strand of the segment located upstream of the casting direction - or, if it is the segment mounted on the loose bearing is segment zero - is aligned with the front edge of the strand of the outlet of the mold upstream of the casting direction.

Auch eine zeitgleiche Wegbegrenzung auf der Festseite und der Losseite ist möglich, wobei die jeweiligen gegenüberliegenden Wegbegrenzungselemente dann so eingestellt werden, dass für den in der Strangführung geführten Kaltstrang keinerlei Bewegungsfreiheit mehr in x-Richtung verbleibt, er aber dennoch für eine Bewegung in Gießrichtung bzw. z-Richtung nicht eingeklemmt wird.Simultaneous path limitation on the fixed side and the loose side is also possible, with the respective opposing path limiting elements then being set in such a way that the dummy bar guided in the strand guide has no freedom of movement in the x-direction, but it is still able to move in the casting direction or in the casting direction. z-direction is not pinched.

Gemäß einem dritten Ausführungsbeispiel kann weiterhin ein festseitiges unteres Wegbegrenzungselement vorgesehen und vorzugsweise einstellbar ausgebildet sein zum Begrenzen des Verschiebeweges des an dem Loslager gelagerten Segmentes in x-Richtung auf eine Anschlagposition, in welcher die Hinterkante Strang an der Ausgangsseite des Segmentes fluchtend auf die Hinterkante Strang der Eingangsseite des in Gießrichtung nachfolgenden Segmentes ausgerichtet ist. Diese Ausrichtung hat konkret den Vorteil, dass Beschädigungen durch den Kaltstrangkopf an den Strangführungsrollen an der Ausgangsseite eines Segmentes, insbesondere des Segmentes Null in der Strangführung verhindert werden.According to a third exemplary embodiment, a fixed-side, lower path-limiting element can also be provided and preferably designed to be adjustable to limit the displacement path of the segment mounted on the floating bearing in the x-direction to a stop position in which the trailing edge of the strand on the output side of the segment is aligned with the trailing edge of the strand of the Input side of the following segment in the casting direction is aligned. This alignment has the specific advantage that damage caused by the dummy bar head on the strand guide rollers on the output side of a segment, in particular the zero segment in the strand guide, is prevented.

Alle drei beschriebenen Ausführungsbeispiele bieten den Vorteil, dass der Weg für einen Kaltstrang in einer Strangführung in x-Richtung, d.h. seitlich, derart begrenzt wird, dass der Kaltstrang nicht an eine Strangführungsrolle oder an die Innenseite der Kokille anstößt und diese durch das Anstoßen nicht beschädigt.All three described exemplary embodiments offer the advantage that the path for a dummy bar in a strand guide in the x-direction, i.e. laterally, is limited in such a way that the dummy bar does not hit a strand guide roller or the inside of the mold and does not damage it by hitting it .

Die oberen und/oder unteren Wegbegrenzungselemente können durch Federn, entweder Tellerfederpakete oder Spiralfedern oder durch ein Elastomer gedämpft ausgebildet sein. Vorteilhafterweise werden dadurch Beschädigungen an der Oberfläche des Gießstrangs vermieden.The upper and/or lower path-limiting elements can be designed to be damped by springs, either disk spring assemblies or coil springs, or by an elastomer. This advantageously prevents damage to the surface of the cast strand.

Die Wegbegrenzungselemente können als Plungerzylinder oder als Hydraulikzylinder ausgebildet sein. Vorzugsweise ist den Wegbegrenzungselementen zumindest eine Wegmesseinrichtung und/oder eine Druckmesseinrichtung zugeordnet zum Erfassen der jeweiligen Stellung der Wegbegrenzungselemente bzw. von deren Verschiebewegen und/oder zum Erfassen der Drücke an der Anlagefläche der Wegbegrenzungselemente zum Strang, jeweils vorzugsweise in Abhängigkeit der Zeit. Diese Funktionalitäten ermöglichen vorteilhafterweise eine statistische Auswertung der Bewegung des Segmentes, insbesondere des Segmentes Null in verschiedenen Phasen vor und während eines Gießprozesses.The path limiting elements can be designed as plunger cylinders or as hydraulic cylinders. At least one displacement measuring device and/or one pressure measuring device is preferably assigned to the travel limiting elements for detecting the respective position of the travel limiting elements or their displacement paths and/or for detecting the pressures on the contact surface of the travel limiting elements Strand, each preferably as a function of time. These functionalities advantageously enable a statistical evaluation of the movement of the segment, in particular the zero segment, in various phases before and during a casting process.

Die oben genannte Aufgabe wird weiterhin durch ein Verfahren zum Betreiben einer Stranggießanlage gemäß einem der vorangegangenen Ansprüche gelöst. Die Vorteile dieses Verfahrens entsprechen den oben mit Bezug auf die beanspruchte Strangführung genannten Vorteilen.The object mentioned above is also achieved by a method for operating a continuous casting plant according to one of the preceding claims. The advantages of this method correspond to the advantages mentioned above in relation to the strand guide claimed.

Der Beschreibung sind drei Figuren beigefügt, wobei

Figur 1
die erfindungsgemäße Strangführung mit dem an seiner Eingangsseite drehgelagerten Segment Null;
Figur 2
eine erfindungsgemäße Aufnahme für ein Drehlager und
Figur 3
die erfindungsgemäße Strangführung mit dem in seinem Schwerpunkt drehgelagerten Segment Null
zeigt.
The description is accompanied by three figures, where
figure 1
the strand guide according to the invention with the segment zero rotatably mounted on its input side;
figure 2
an inventive recording for a pivot bearing and
figure 3
the strand guide according to the invention with the zero segment rotatably mounted in its center of gravity
shows.

Die Erfindung wird nachfolgend in Form von Ausführungsbeispielen unter Bezugnahme auf die genannten Figuren detailliert beschrieben. In allen Figuren sind gleiche technische Elemente mit gleichen Bezugszeichen bezeichnet.The invention is described in detail below in the form of exemplary embodiments with reference to the figures mentioned. The same technical elements are denoted by the same reference symbols in all figures.

Figur 1 zeigt eine Gießanlage mit einer Kokille 200 und einer der Kokille in Gießrichtung G nachgeordneten Strangführung 100. Die Strangführung dient zum Führen eines Gießstranges nach seinem Austritt aus der Kokille 200. Die Strangführung 100 umfasst eine Mehrzahl von in Gießrichtung G hintereinander angeordneten Segmenten 110-0, 110-1, wobei das Segment Null 100-0 das erste Segment in Gießrichtung G hinter der Kokille 200 bezeichnet. figure 1 shows a casting system with a mold 200 and a strand guide 100 downstream of the mold in the casting direction G. The strand guide serves to guide a cast strand after it has exited the mold 200 arranged segments 110-0, 110-1, wherein the segment zero 100-0 denotes the first segment in the casting direction G behind the mold 200.

Das Segment Null ist an einem Drehlager 120 um die y-Achse drehbar gelagert. Lediglich beispielhaft ist das Drehlager 120 in Figur 1 an der dem Ausgang der Kokille 200 zugewandten Eingangsseite des Segmentes Null angeordnet. Seine Drehachse liegt vorteilhafterweise auf einer Höhe bzw. auf einer Linie mit den Drehachsen der beiden ersten Strangführungsrollen 112 an der Eingangsseite E des Segmentes Null 110-0.The zero segment is rotatably mounted on a rotary bearing 120 about the y-axis. The pivot bearing 120 in figure 1 arranged at the exit of the mold 200 facing input side of segment zero. Its axis of rotation is advantageously at the same height or on a line with the axes of rotation of the two first strand guide rollers 112 on the entry side E of segment zero 110-0.

Durch diese beanspruchte Anordnung des Drehlagers 120 an der Eingangsseite E des Segmentes Null ist das Segment Null pendelnd an dem Drehlager aufgehangen. Die Erstreckung des Segmentes Null oberhalb der Drehachse des Drehlagers 120 ist deshalb vernachlässigbar gegenüber der Erstreckung des Segmentes Null in Gießrichtung unterhalb der Drehachse. Dementsprechend ist im Falle einer Pendelbewegung des Segmentes Null der Schwingungsweg der Eingangsseite des Segmentes Null in x-Richtung klein im Vergleich zu dem Schwingungsweg in x-Richtung am Ausgang des Segmentes Null 110-0.Due to this claimed arrangement of the pivot bearing 120 on the input side E of the zero segment, the zero segment is hung in an oscillating manner on the pivot bearing. The extent of segment zero above the axis of rotation of pivot bearing 120 is therefore negligible compared to the extent of segment zero in the casting direction below the axis of rotation. Accordingly, in the case of an oscillating movement of segment zero, the oscillation displacement in the x-direction of the entrance side of segment zero is small compared to the oscillation displacement in the x-direction at the exit of segment zero 110-0.

Das Drehlager 120 ist in x-Richtung in einer Aufnahme 130 verschiebbar gelagert. Das Drehlager 120 und die Aufnahme 130 bilden zusammen ein Loslager. Die Aufnahme 130 ist beispielsweise an dem Tragrahmen einer Oszillatoreinrichtung (nicht gezeigt) für die Kokille fest angeordnet, wobei dieser Tragrahmen seinerseits wiederum mit dem Fundament verbunden ist. Das Segment ist an dem Drehlager drehbar gelagert und zusammen mit dem Drehlager innerhalb der Aufnahme in x-Richtung verschiebbar. Alternativ wäre es auch möglich, dass das Drehlager fest mit dem Fundament verbunden ist und die Aufnahme (130) mit dem daran in x-Richtung verschiebbar angeschlossenen Segment (110) an dem Drehlager (120) drehbar gelagert ist.The rotary bearing 120 is mounted in a receptacle 130 such that it can be displaced in the x-direction. The pivot bearing 120 and the receptacle 130 together form a floating bearing. The receptacle 130 is fixedly arranged, for example, on the support frame of an oscillator device (not shown) for the mold, this support frame in turn being connected to the foundation. The segment is rotatably mounted on the pivot bearing and, together with the pivot bearing, can be displaced in the x-direction within the receptacle. Alternatively, it would also be possible for the pivot bearing to be firmly connected to the foundation and for the receptacle (130) to be rotatably mounted on the pivot bearing (120) with the segment (110) connected thereto so that it can be displaced in the x-direction.

Figur 2 zeigt die Aufnahme 130 für das Drehlager 120 in einer perspektivischen Detaildarstellung. Zu erkennen sind eine Mehrzahl von Wegbegrenzungselementen 140-n mit n = 1... N, insbesondere (obere) Wegbegrenzungselemente 140-1, 140-2 zum Begrenzen der Verschiebung des Drehlagers 120 in x-Richtung, wenn dieses in die Aufnahme eingesetzt ist (nicht gezeigt). Mit dem Drehlager (120) wird auch das an dem Drehlager pendelnd aufgehangene Segment Null 110-0 auf der Festseite 100-F und vorzugsweise auch auf der Losseite 100-L der Strangführung 100 in seiner Bewegungsfreiheit in x-Richtung begrenzt. figure 2 shows the receptacle 130 for the pivot bearing 120 in a perspective detail view. A plurality of path limiting elements 140-n with n=1 (Not shown). The pivot bearing (120) also limits the freedom of movement in the x-direction of segment zero 110-0, which is pendulously suspended from the pivot bearing, on the fixed side 100-F and preferably also on the loose side 100-L of the strand guide 100.

Das obere Wegbegrenzungselement 140-1 ist vorzugsweise einstellbar ausgebildet, die Verschiebung des Drehlagers 120 bzw. des Segmentes auf der Festseite 100-F der Strangführung auf eine solche Anschlagsposition zu begrenzen, dass die "Hinterkante Strang" an der Eingangsseite des Segmentes Null 110-0 fluchtend auf die "Hinterkante Strang" des Ausgangs der Kokille 200 ausgerichtet ist.The upper path limiting element 140-1 is preferably adjustable to limit the displacement of the rotary bearing 120 or the segment on the fixed side 100-F of the strand guide to such a stop position that the "rear edge of strand" on the input side of the segment is zero 110-0 aligned with the "rear edge strand" of the outlet of the mold 200.

Analog ist das obere losseitige Wegbegrenzungselement 140-2 vorzugsweise einstellbar ausgebildet, die Verschiebung des Drehlagers bzw. des Segmentes auf der Losseite 100-L der Strangführung 100 auf eine solche Anschlagsposition zu begrenzen, dass die "Vorderkante Strang" 111-2 an der Eingangsseite des Segmentes Null 110-0 fluchtend auf die "Vorderkante Strang" des Ausgangs der Kokille 200 ausgerichtet ist.Similarly, the upper travel limiting element 140-2 on the loose side is designed to be adjustable, so that the displacement of the rotary bearing or segment on the loose side 100-L of the strand guide 100 is limited to such a stop position that the "front edge of the strand" 111-2 on the input side of the Segment zero 110-0 is aligned with the "leading edge strand" of the outlet of the mold 200.

Die Wegbegrenzungselemente sind typischerweise in Form von Plungerzylindern oder Hydraulikzylindern ausgebildet. Sie können gedämpft gelagert sein, beispielsweise über Tellerfederpakete 165, wie in Figur 2 dargestellt. Alternativ können die Tellerfederpakete auch ersetzt sein durch eine Spiralfeder oder durch eine Elastomer als Pufferelement.The path limiting elements are typically designed in the form of plunger cylinders or hydraulic cylinders. They can be dampened, for example by means of disk spring assemblies 165, as in figure 2 shown. Alternatively, the disc spring packs can also be replaced by a spiral spring or by an elastomer as a buffer element.

Wieder bezugnehmend auf Figur 1 weist die erfindungsgemäße Strangführung 100 weiterhin ein unteres Begrenzungselement 140-3 auf, welches an dem Segmenttragrahmen oder auf einer oberen Lagerung des Tragrahmens befestigt ist. Das untere Wegbegrenzungselement 140-3 dient zum Begrenzen der Pendel- und/oder Verschiebebewegung des Segmentes Null in x-Richtung auf der Festseite 100-F der Strangführung. Konkret ist das untere Bewegungselement 140-3 auf eine solche Anschlagposition einstellbar, in welcher die "Hinterkante Strang" 116-1 an der Ausgangsseite des Segmentes Null fluchtend auf die "Hinterkante Strang" 116-2 der Eingangsseite des nachfolgenden Segmentes Eins 110-1 ausgerichtet ist. Das untere Wegbegrenzungselement 140-3 kann gleichartig wie die oberen Wegbegrenzungselemente 140-1, 140-2 in Form von Plunger- oder Hydraulikzylindern, jeweils mit oder ohne Pufferelementen ausgebildet sein.Referring again to figure 1 the strand guide 100 according to the invention also has a lower limiting element 140-3 which is attached to the Segment support frame or is attached to an upper bearing of the support frame. The lower path-limiting element 140-3 serves to limit the pendulum and/or displacement movement of segment zero in the x-direction on the fixed side 100-F of the strand guide. Specifically, the lower movement element 140-3 can be adjusted to such a stop position in which the "rear edge of line" 116-1 on the output side of segment zero is aligned with the "rear edge of line" 116-2 of the input side of subsequent segment one 110-1 is. The lower path limiting element 140-3 can be designed in the same way as the upper path limiting elements 140-1, 140-2 in the form of plunger or hydraulic cylinders, each with or without buffer elements.

Darüber hinaus kann dem oberen und/oder unteren Wegbegrenzungselement 140 eine Wegmesseinrichtung 160 zugeordnet sein, wie in Figur 2 zu erkennen ist. Die Wegmesseinrichtung 160 dient zur Erfassung der Anschlagpositionen der Wegbegrenzungselemente vorzugsweise in Abhängigkeit der Zeit zu statistischen oder Auswertezwecken. Alternativ oder zusätzlich können den Wegbegrenzungselementen 140 auch jeweils eine Druckmesseinrichtung 170 zugeordnet sein zum Erfassen der von den Wegbegrenzungselementen in ihren Anschlagspositionen gegebenenfalls auf den (Kalt-)Strang ausgeübten Kräften.In addition, a displacement measuring device 160 can be assigned to the upper and/or lower displacement limiting element 140, as shown in FIG figure 2 can be seen. The path measuring device 160 is used to record the stop positions of the path limiting elements, preferably as a function of time, for statistical or evaluation purposes. As an alternative or in addition, each of the travel limiting elements 140 can also be assigned a pressure measuring device 170 for detecting the forces that may be exerted on the (cold) leg by the travel limiting elements in their stop positions.

Bei dem in den Figuren 1 und 2 gezeigten Ausführungsbeispielen sind die Wegbegrenzungselemente in Form der Plunger- oder Hydraulikzylinder vorzugsweise in die Seitenwände der Aufnahme 130 integriert, wie dies in Figur 2 dargestellt ist. Diese Anordnung der Wegbegrenzungselemente 140 empfiehlt sich insbesondere für die in Figur 1 gezeigte beispielhafte pendelnde Aufhängung des Segmentes Null an seiner dem Ausgang der Kokille 200 zugewandten Eingangsseite.At the in the figures 1 and 2 In the exemplary embodiments shown, the path-limiting elements in the form of plunger or hydraulic cylinders are preferably integrated into the side walls of receptacle 130, as is shown in figure 2 is shown. This arrangement of the path limiting elements 140 is particularly recommended for the in figure 1 shown exemplary oscillating suspension of the zero segment on its input side facing the output of the mold 200 .

Diese pendelnde Aufhängung des Segmentes Null ist jedoch keineswegs zwingend; vielmehr kann das Segment Null mit Hilfe des Drehlagers 120 auch beispielsweise in seinem Schwerpunkt drehbar gelagert sein, wie in Figur 3 gezeigt. Eine Wegbegrenzung in x-Richtung auf Höhe des Drehlagers würde dann wenig Sinn machen, weil mit einer dortigen Wegbegrenzung auf Höhe des Schwerpunktes weder die Eingangsseite des Segmentes auf die vorgelagerten Bauteile, sei es eine Kokille oder sei es ein vorgelagertes Segment, noch der Ausgang des Segmentes auf den Eingang eines nachfolgenden Segmentes ausgerichtet werden könnte. Deshalb sieht die vorliegende Erfindung vor, dass die Wegbegrenzungselemente - unabhängig von dem Ort der Drehlagerung des Segmentes - immer auf Höhe der Eingangsseite und/oder an der Ausgangsseite des Segmentes angeordnet sind, wie dies in Figur 3 dargestellt ist. Nur dann ist gewährleistet, dass die Wegbegrenzungselemente 140 die ihnen zugedachte Funktion gewährleisten, nämlich einen gleitenden Übergang zu einem in dem Segment geführten Strang auf ein vorgelagertes Bauteil, sei es eine Kokille oder ein vorgelagertes Segment, oder auf ein nachgelagertes Segment sicherzustellen.However, this oscillating suspension of the zero segment is by no means mandatory; rather, the segment zero with the help of the pivot bearing 120 as well for example, be rotatably mounted at its center of gravity, as in figure 3 shown. A travel limitation in the x-direction at the height of the pivot bearing would then make little sense, because with a travel limitation there at the height of the center of gravity, neither the input side of the segment has access to the upstream components, be it a mold or an upstream segment, nor the output of the segment could be aligned with the entrance of a subsequent segment. Therefore, the present invention provides that the path limiting elements - regardless of the location of the rotary bearing of the segment - are always arranged at the level of the input side and/or on the output side of the segment, as is shown in figure 3 is shown. Only then is it guaranteed that the path limiting elements 140 guarantee their intended function, namely ensuring a smooth transition from a strand guided in the segment to an upstream component, be it a mold or an upstream segment, or to a downstream segment.

Neben den bereits erwähnten oberen Wegbegrenzungselementen 140-1 und 140-2 sowie dem unteren festseitigen Wegbegrenzungselement 140-3 zeigt Figur 3 auch ein viertes mögliches Wegbegrenzungselement 140-4 auf der Losseite am Ausgang des Segmentes Null. Es dient zum Begrenzen der Pendel- und/oder Verschiebebewegung des Segmentes Null in x-Richtung auf der Losseite 100-L der Strangführung 100. Konkret kann dieses vierte Wegbegrenzungselement 140-4 auf eine solche Anschlagposition eingestellt werden, dass die Vorderkante Strang am losseitigen Ausgang des Segmentes auf die Vorderkante Strang an dem losseitigen Eingang des nachfolgenden Segmentes ausgerichtet ist.In addition to the already mentioned upper path limiting elements 140-1 and 140-2 and the lower fixed-side path limiting element 140-3 figure 3 also a fourth possible path limiting element 140-4 on the loose side at the exit of segment zero. It is used to limit the pendulum and/or displacement movement of segment zero in the x-direction on the loose side 100-L of the strand guide 100. Specifically, this fourth travel limiting element 140-4 can be set to such a stop position that the leading edge of the strand at the loose-side exit of the segment is aligned with the leading edge of the strand at the loose-end entrance of the following segment.

Nachfolgend wird das erfindungsgemäße Verfahren zum Betreiben der zuvor unter Bezugnahme auf die Figuren 1 bis 3 beschriebenen Strangführung näher erläutert. Dabei ist zu unterscheiden zwischen einem Betrieb vor Beginn des eigentlichen Gießprozesses und dem eigentlichen Gießprozess. Vor dem eigentlichen Gießprozess wird typischerweise zunächst ein Kaltstrang entgegen der Gießrichtung G durch die Segmente bis hoch in den Ausgang der Kokille 200 eingeführt. Der Kaltstrang dient zum Verschließen der Kokille vor deren Befüllung mit flüssiger Metallschmelze für eine jeweils neue Gießsequenz. Der Kaltstrang verbindet sich dann typischerweise mit dem vorderen Ende des gegossenen Gießstrangs und er dient zum Herausziehen des noch frischen Gießstrangs aus der Kokille 200 (Angießen). Dazu kehrt sich dann die Bewegungsrichtung des Kaltstrangs um und er wird in Gießrichtung aus der Strangführung herausgezogen.The inventive method for operating the above with reference to the Figures 1 to 3 described strand guide explained in more detail. A distinction must be made between operation before the actual casting process begins and the actual casting process. Before the actual casting process, a dummy bar is typically run counter to the casting direction G through the segments up to the outlet of mold 200 introduced. The dummy bar is used to close the mold before it is filled with molten metal for a new casting sequence. The dummy bar then typically connects to the front end of the cast strand and is used to pull the still fresh cast strand out of the mold 200 (casting). For this purpose, the direction of movement of the dummy bar is then reversed and it is pulled out of the strand guide in the casting direction.

Um eine Beschädigung der Innenseite der Kokille 200, d. h. insbesondere von deren Kupferplatten durch den ausgangsseitig eingeführten Kaltstrang zu verhindern, sieht das erfindungsgemäße Verfahren vor, dass vor dem Einfahren des Kaltstrangs in das Segment Null 110-0 oder vor Beginn des Angießens folgende Schritte ausgeführt werden:

  • Drehbare Lagerung des Segmentes, insbesondere des Segmentes Null 110-0 um die y-Achse bei vorzugsweise gleichzeitigem Freiheitsgrad zur Verschiebung in x-Richtung. Erfindungsgemäß wird dabei die Verschiebung des Drehlagers mit dem daran hängenden Segment insbesondere auf der Festseite 100-F der Strangführung auf eine Anschlagposition begrenzt, in welcher die Hinterkante Strang an der Eingangsseite des Segmentes Null fluchtend auf die Hinterkante Strang des Ausgangs der Kokille 200 ausgerichtet ist.
In order to prevent damage to the inside of the mold 200, ie in particular to its copper plates, by the dummy bar introduced on the outlet side, the method according to the invention provides that the following steps are carried out before the dummy bar is moved into segment zero 110-0 or before the start of casting :
  • Rotatable mounting of the segment, in particular the segment zero 110-0, about the y-axis with preferably a simultaneous degree of freedom for displacement in the x-direction. According to the invention, the displacement of the rotary bearing with the segment hanging from it is limited, in particular on the fixed side 100-F of the strand guide, to a stop position in which the trailing edge of the strand on the input side of segment zero is aligned with the trailing edge of the strand at the exit of mold 200.

Vorzugsweise wird die Bewegung des Segmentes Null in x-Richtung auch an seinem Ausgang begrenzt. Die dort stattfindende Bewegung der Ausgangsseite des Segmentes Null in x-Richtung aufgrund einer Pendel- und/oder Verschiebebewegung des Segmentes Null wird auf eine Anschlagposition begrenzt, in welcher die Hinterkante Strang 116-1 an der Ausgangsseite A des Segmentes Null fluchtend auf die "Hinterkante Strang" 116-2 der Eingangsseite E des nachfolgenden Segmentes Eins ausgerichtet ist.The movement of segment zero in the x-direction is preferably also limited at its exit. The movement of the output side of the zero segment that takes place there in the x-direction due to a pendulum and/or displacement movement of the zero segment is limited to a stop position in which the rear edge strand 116-1 on the output side A of the zero segment is aligned with the "rear edge Strand" 116-2 of the input side E of the subsequent segment one is aligned.

Zur Realisierung der Wegbegrenzung in x-Richtung und der damit verbundenen besagten Ausrichtung wird mindestens eines der Wegbegrenzungselemente 140 mit Hilfe einer Steuereinrichtung 150 aus einer Ruheposition in seine jeweilige Anschlagsposition verfahren.In order to implement the travel limitation in the x-direction and the said alignment associated therewith, at least one of the travel limitation elements 140 is moved from a rest position to its respective stop position with the aid of a control device 150 .

Nach dem Herausziehen des Kaltstrangs aus der Strangführung mit dem frisch gegossenen Gießstrang bzw. nach dem Angießen kann die besagte Wegbegrenzung für das Segment Null an dessen Eingangsseite E und/oder an dessen Ausgangsseite A für einen nachfolgenden Gießbetriebs aufgegeben werden. Dazu verfährt das jeweilige Wegbegrenzungselement 140-1 ... -4 dann - gesteuert von einer Steuereinrichtung 150- aus seiner Anschlagsposition in eine Ruheposition. Das Segment Null ist dann in x-Richtung - vorzugsweise innerhalb von vorgegebenen vergrößerten Weggrenzen - in x-Richtung frei beweglich und es kann in dem Drehlager 120 frei um die y-Achse pendeln. Vorteilhafterweise ermöglicht die besagte Freigabe des Segmentes Null eine Selbstausrichtung des Segmentes Null in x-Richtung insbesondere während des Gießbetriebs, d. h. während das Segment Null von einem Gießstrang kontinuierlich durchlaufen wird. Aufgrund der besagten Freiheitsgrade richtet sich das Segment Null vorteilhafterweise während des Gießbetriebs automatisch immer richtig mit seiner Eingangsseite auf den Ausgang der Kokille 200 und mit seiner Ausgangsseite auf den Eingang des nachfolgenden Segmentes Eins aus. Die Ausrichtung erfolgt immer so, dass zum Führen des Gießstrangs möglichst wenige Kräfte aufgebracht werden müssen.After the dummy bar has been pulled out of the strand guide with the freshly cast strand or after casting, said travel limitation for segment zero can be abandoned at its input side E and/or at its output side A for a subsequent casting operation. For this purpose, the respective path limiting element 140-1 . . . -4 then moves—controlled by a control device 150—from its stop position to a rest position. The segment zero is then freely movable in the x-direction--preferably within predetermined enlarged travel limits--in the x-direction and it can oscillate freely about the y-axis in the rotary bearing 120. Advantageously, said release of the zero segment enables self-alignment of the zero segment in the x-direction, in particular during the casting operation, i. H. while segment zero is continuously traversed by a cast strand. Due to said degrees of freedom, segment zero advantageously always automatically aligns itself correctly during the casting operation with its input side toward the output of the mold 200 and with its output side toward the input of the following segment one. The alignment is always done in such a way that as few forces as possible have to be applied to guide the cast strand.

Der erfindungsgemäße Kerngedanke einer Wegbegrenzung der Segmente einer Strangführung in x-Richtung wurde in den zuvor beschriebenen Ausführungsbeispielen unter Bezugnahme auf die Figuren primär für das erste Segment in Gießrichtung hinter der Kokille, d. h. für das Segment Null beschrieben. Dieser Kerngedanke ist jedoch gleichermaßen auch auf jedes beliebige andere Segment in einer Strangführung anwendbar. Auch deren Verschiebung in x-Richtung ist durch Wegbegrenzungselemente an der Eingangsseite und/oder an der Ausgangsseite auf der Festseite und/oder auf der Losseite begrenzbar. Das gilt unabhängig davon, ob das Drehlager zur drehbaren Lagerung des Segmentes an dessen Eingangsseite, in dessen Schwerpunkt oder an dessen Ausgangsseite oder an einer beliebigen anderen Stelle in Bezug auf das Segment angebracht ist. Die Wegbegrenzung in x-Richtung erfolgt dann an der Eingangsseite - anders als bei dem Segment Null, bei dem die Eingangsseite auf den Ausgang der Kokille ausgerichtet wurde - auf den Ausgang des in Gießrichtung stromaufwärts vorgelagerten Segmentes.The core idea according to the invention of limiting the travel of the segments of a strand guide in the x-direction was described in the above-described exemplary embodiments with reference to the figures primarily for the first segment in the casting direction behind the mold, ie for segment zero. However, this core idea is equally applicable to any other segment in a strand guide. Also, their shift in the x-direction is due to the path limiting elements The entry side and/or the exit side can be limited on the fixed side and/or on the loose side. This applies regardless of whether the rotary bearing for rotatably supporting the segment is attached to its entry side, in its center of gravity or on its exit side or at any other point in relation to the segment. The path limitation in the x-direction then takes place on the input side - in contrast to segment zero, in which the input side was aligned with the output of the mold - on the output of the upstream segment in the casting direction.

BezugszeichenlisteReference List

100100
Strangführungstrand guide
100-F100-F
Festseite der StrangführungFixed side of the strand guide
100-L100-L
Losseite der StrangführungLoose side of the strand guide
110110
Segmentsegment
110-0110-0
Segment Nullsegment zero
110-1110-1
Segment EinsSegment One
111-1111-1
Hinterkante Strang an der Eingangsseite eines Segmentes (Festseite)Trailing edge strand on the entry side of a segment (fixed side)
111-2111-2
Vorderkante Strang an der Eingangsseite eines Segmentes (Losseite)Front edge strand on the entry side of a segment (loose side)
112112
Strangführungsrollenstrand guide rollers
116-1116-1
Hinterkante Strang an der Ausgangsseite des Segmentes (Null) (Festseite)Trailing edge strand on the exit side of the segment (zero) (fixed side)
116-3116-3
Hinterkante Strang an der Eingangsseite des nachfolgenden Segments (Eins) (Festseite)Trailing edge strand on the entry side of the following segment (one) (fixed side)
120120
Drehlagerpivot bearing
130130
AufnahmeRecording
140-n140-n
Wegbegrenzungselementpath limiting element
140-1140-1
oberes Wegbegrenzungselement (Festseite)upper path limiting element (fixed side)
140-2140-2
oberes Wegbegrenzungselement (Losseite)upper path limiting element (loose side)
140-3140-3
unteres Wegbegrenzungselement (Festseite)lower path limiting element (fixed side)
140-4140-4
unteres Wegbegrenzungselement (Losseite)lower path limiting element (loose side)
150150
Steuereinrichtungcontrol device
160160
Wegmesseinrichtungdistance measuring device
165165
Pufferelementbuffer element
170170
Druckmesseinrichtungpressure gauge
200200
Kokillemold
200-1200-1
Hinterkante Strang am Ausgang der Kokille (Festseite)Trailing edge strand at the exit of the mold (fixed side)
200-2200-2
Vorderkante Strang am Ausgang der Kokille (Losseite)Front edge strand at the exit of the mold (loose side)
AA
Ausgangsseiteexit page
EE
Eingangsseiteentry page
GG
Gießrichtungpouring direction
x, y, zx, y, z
Koordinatenachsencoordinate axes

Claims (16)

  1. Strip guide (100) for guiding a cast strip after exit thereof from a mould (200), wherein the strip guide comprises:
    a plurality of segments (110-0, 110-1) arranged in succession in casting direction (G);
    at least one movable bearing (120, 130) for rotatable mounting of at least one of the segments (110-0, 110-1), wherein the movable bearing is constructed to fix the segment, which is mounted thereon, in z direction, but to allow it to be movable in x direction; and
    at least one travel limiting element (140-n) for limiting displacement travel of the segment (110), which is mounted on the movable bearing (120, 130), in x direction, wherein z basically denotes the vertical and x and y basically span a plane in the horizontal;
    characterised in that
    the at least one travel limiting element is constructed to be selectably settable with respect to its abutment position for limiting the displacement travel of the segment or is constructed to be settable with respect to a rest position for freeing the displacement travel of the segment in x direction; and
    a control device (150) is provided for moving at least one of the travel limiting elements (140-1, ... 140-3) in its respective abutment position during travel of a cold strip in the strip guide or during casting-on and for returning the travel limiting element from its abutment position to its rest position in which the displacement in x direction for the segment (110) is freed during A casting operation.
  2. Strip guide (100) according to claim 1,
    characterised in that
    the movable bearing is constructed with a rotary bearing (120) and a receptacle (130) for the rotary bearing (120) for rotatable mounting of the segment about the y axis, wherein the rotary bearing (120) and the receptacle (130) are mounted to be displaceable relative to one another in x direction.
  3. Strip guide (100) according to claim 2,
    characterised in that
    the at least one travel limiting element (140) is arranged in or at the receptacle.
  4. Strip guide (100) according to claim 2 or 3,
    characterised in that
    the rotary bearing (120) is arranged at the entry side of the segment (110-0) for pendulating mounting of the segment about the y axis.
  5. Strip guide (100) according to claim 4,
    characterised in that
    the axis of rotation of the rotary bearing (120) lies in a plane with the axis of rotation of at least one of the two first strip guide rollers (112) of the segment, particularly the segment zero (110-0).
  6. Strip guide (100) according to any one of claims 2 to 5,
    characterised in that
    the segment (110) is rotatably mounted on the rotary bearing (120), the rotary bearing is mounted to be displaceable in the receptacle (130) in x direction and the receptacle (130) is connected with the foundation of the strip guide (100) preferably by way of the support frame of an oscillatory device for the mould (200); or
    alternatively the rotary bearing is fixedly connected with the foundation and the receptacle (130) together with the segment (110) connected to be displaceable thereat in x direction is rotatably mounted on the rotary bearing (120).
  7. Strip guide (100) according to any one of the preceding claims,
    characterised in that
    at least one travel measuring device (160) is provided for detecting the setting or the displacement travel of at least one of the travel limiting elements, preferably in dependence on time.
  8. Strip guide (100) according to any one of the preceding claims,
    characterised in that
    at least one pressure measuring device (170) is provided for detection of the pressure by which the travel limiting element in the abutment position presses against the (cold) strip, preferably in dependence on time.
  9. Strip guide (100) according to any one of the preceding claims,
    characterised in that
    the at least one travel limiting element (140) is constructed in the form of a plunger cylinder.
  10. Strip guide (100) according to one of claims 7 and 8,
    characterised in that
    the at least one travel limiting element (140) is constructed in the form of a position-regulated hydraulic cylinder in which the travel measuring device (160) is preferably integrated.
  11. Strip guide (100) according to any one of the preceding claims,
    characterised in that
    a buffer element (165), for example a plate spring assembly, a helical spring or a body of an elastomer, is provided for buffering the travel limiting element, particularly when this is set to its abutment position and is subjected to a force action.
  12. Method of operating a strip guide (100) according to any one of the preceding claims for guiding a cast strip after exit thereof from a mould (200),
    characterised by the following steps prior to movement of a cold strip into the strip guide or prior to casting-on:
    - limiting a displacement of the segment (140), particularly the segment zero, which is mounted on the movable bearing (120, 130), with respect to an abutment position in x direction.
  13. Method according to claim 12,
    characterised in that
    in a first abutment position the strip rear edge (111-1) is oriented at the entry side of the segment zero (110-0) in alignment with the strip rear edge (200-1) of the outlet of the mould (200).
  14. Method according to claim 12 or 13,
    characterised in that
    in a second abutment position the strip front edge (111-2) is oriented at the entry side of the segment zero (110-0) in alignment with the strip front edge (200-2) of the outlet of the mould (200).
  15. Method according to any one of claims 12 to 14,
    characterised in that
    in a third abutment position the strip rear edge (116-1) is oriented at the outlet side (A) of the segment in alignment with the strip rear edge (116-3) of the entry side of the segment (110-1) following in casting direction (G).
  16. Method according to any one of claims 12 to 15,
    characterised in that
    the travel limitation for the segment, particularly for the segment zero (110-0), at the entry side thereof and/or at outlet side thereof is cancelled after the casting-on, before or during a succeeding casting operation, so that the segment is then freely movable in x direction.
EP20710473.8A 2019-03-07 2020-03-06 Strand guide and method for guiding a cast strand from a mould Active EP3934828B1 (en)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE102019203141.2A DE102019203141A1 (en) 2019-03-07 2019-03-07 Strand guide and method for guiding a cast strand from a mold
PCT/EP2020/056002 WO2020178425A1 (en) 2019-03-07 2020-03-06 Strand guide and method for guiding a cast strand from a mould

Publications (2)

Publication Number Publication Date
EP3934828A1 EP3934828A1 (en) 2022-01-12
EP3934828B1 true EP3934828B1 (en) 2023-06-28

Family

ID=69784433

Family Applications (1)

Application Number Title Priority Date Filing Date
EP20710473.8A Active EP3934828B1 (en) 2019-03-07 2020-03-06 Strand guide and method for guiding a cast strand from a mould

Country Status (3)

Country Link
EP (1) EP3934828B1 (en)
DE (1) DE102019203141A1 (en)
WO (1) WO2020178425A1 (en)

Citations (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP2276594B1 (en) * 2008-05-23 2016-09-28 Primetals Technologies Austria GmbH Continuous casting system for casting a metal strand having a billet or bloom cross-section

Family Cites Families (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE102010054398A1 (en) * 2010-12-08 2012-06-14 Sms Siemag Ag continuous casting plant
DE102017117634A1 (en) * 2017-08-03 2019-02-07 Salzgitter Flachstahl Gmbh Optimized continuous casting plant and process for the optimized alignment of components of a continuous casting plant
DE102017221756A1 (en) 2017-08-04 2019-02-07 Sms Group Gmbh Storage for a segment in a strand guide

Patent Citations (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP2276594B1 (en) * 2008-05-23 2016-09-28 Primetals Technologies Austria GmbH Continuous casting system for casting a metal strand having a billet or bloom cross-section

Also Published As

Publication number Publication date
WO2020178425A1 (en) 2020-09-10
DE102019203141A1 (en) 2020-09-10
EP3934828A1 (en) 2022-01-12

Similar Documents

Publication Publication Date Title
CH345121A (en) Process for the continuous casting of a metal strand and continuous casting plant for carrying out this process
EP0834364B1 (en) Method and device for high-speed continuous casting plants with reduction of the width during solidification
DE1483659A1 (en) Device for continuous casting of metal
EP0734800A1 (en) Strand guide in a continuous casting plant for thin slabs
DE102010050647A1 (en) Plant and method for casting and rolling metal
AT408420B (en) PLANT FOR PRODUCING HOT-ROLLED STEEL STRIP
DE2644096C2 (en) Support and guide bends for cast strands, in particular for cast slab strands
EP2190601B1 (en) Device for adjusting the distance of a stripper chisel
DE1558220C3 (en) Storage of rollers for changing the shape of a metallic strand coming from a continuous casting mold
EP3934828B1 (en) Strand guide and method for guiding a cast strand from a mould
DE2646295A1 (en) SUPPORT BOW AND GUIDE BEND FOR CAST STRUCTURE, IN PARTICULAR FOR CAST IRON BEAM
EP1365874B1 (en) Method and device for producing thin slabs
DE2021780C3 (en) Method for adapting the arch guide of a strand emerging from a continuous casting mold and device for this
EP3661671B1 (en) Mount for a segment in a strand guide and strand guide
DE10160636B4 (en) Method for setting a casting gap on a strand guide of a continuous casting plant and continuous casting plant for carrying out the process
DE2361820C3 (en) Method and device for the further transport of a molding strand formed from horizontally divided boxless casting molds along a casting and cooling section
DE3528328C2 (en)
DE3219161C1 (en) Method and device for decoupling the dummy bar from the cast strand in the continuous casting of metal, especially steel
DE2618747A1 (en) PROCESS FOR REPLACING SUPPORT ROLLERS OR DRIVE ROLLERS IN A CONTINUOUS CASTING PLANT AND EQUIPMENT FOR PERFORMING THE PROCESS
EP3706933B1 (en) Strand guide segment and continuous casting plant
EP2089172B1 (en) Method of operating a strand guiding device
WO1998020998A1 (en) Method and device for continuous thin slab steel casting
EP0064238A1 (en) Process and device for bending a strand in a continuous steel casting machine
DE2063545B2 (en) Square continuous casting mold
AT206129B (en)

Legal Events

Date Code Title Description
STAA Information on the status of an ep patent application or granted ep patent

Free format text: STATUS: UNKNOWN

STAA Information on the status of an ep patent application or granted ep patent

Free format text: STATUS: THE INTERNATIONAL PUBLICATION HAS BEEN MADE

STAA Information on the status of an ep patent application or granted ep patent

Free format text: STATUS: THE INTERNATIONAL PUBLICATION HAS BEEN MADE

PUAI Public reference made under article 153(3) epc to a published international application that has entered the european phase

Free format text: ORIGINAL CODE: 0009012

STAA Information on the status of an ep patent application or granted ep patent

Free format text: STATUS: REQUEST FOR EXAMINATION WAS MADE

17P Request for examination filed

Effective date: 20211007

AK Designated contracting states

Kind code of ref document: A1

Designated state(s): AL AT BE BG CH CY CZ DE DK EE ES FI FR GB GR HR HU IE IS IT LI LT LU LV MC MK MT NL NO PL PT RO RS SE SI SK SM TR

DAV Request for validation of the european patent (deleted)
DAX Request for extension of the european patent (deleted)
GRAP Despatch of communication of intention to grant a patent

Free format text: ORIGINAL CODE: EPIDOSNIGR1

STAA Information on the status of an ep patent application or granted ep patent

Free format text: STATUS: GRANT OF PATENT IS INTENDED

INTG Intention to grant announced

Effective date: 20230209

GRAS Grant fee paid

Free format text: ORIGINAL CODE: EPIDOSNIGR3

GRAA (expected) grant

Free format text: ORIGINAL CODE: 0009210

STAA Information on the status of an ep patent application or granted ep patent

Free format text: STATUS: THE PATENT HAS BEEN GRANTED

AK Designated contracting states

Kind code of ref document: B1

Designated state(s): AL AT BE BG CH CY CZ DE DK EE ES FI FR GB GR HR HU IE IS IT LI LT LU LV MC MK MT NL NO PL PT RO RS SE SI SK SM TR

REG Reference to a national code

Ref country code: CH

Ref legal event code: EP

REG Reference to a national code

Ref country code: AT

Ref legal event code: REF

Ref document number: 1582251

Country of ref document: AT

Kind code of ref document: T

Effective date: 20230715

REG Reference to a national code

Ref country code: IE

Ref legal event code: FG4D

Free format text: LANGUAGE OF EP DOCUMENT: GERMAN

REG Reference to a national code

Ref country code: DE

Ref legal event code: R096

Ref document number: 502020003952

Country of ref document: DE

P01 Opt-out of the competence of the unified patent court (upc) registered

Effective date: 20230707

REG Reference to a national code

Ref country code: LT

Ref legal event code: MG9D

PG25 Lapsed in a contracting state [announced via postgrant information from national office to epo]

Ref country code: SE

Free format text: LAPSE BECAUSE OF FAILURE TO SUBMIT A TRANSLATION OF THE DESCRIPTION OR TO PAY THE FEE WITHIN THE PRESCRIBED TIME-LIMIT

Effective date: 20230628

Ref country code: NO

Free format text: LAPSE BECAUSE OF FAILURE TO SUBMIT A TRANSLATION OF THE DESCRIPTION OR TO PAY THE FEE WITHIN THE PRESCRIBED TIME-LIMIT

Effective date: 20230928

REG Reference to a national code

Ref country code: NL

Ref legal event code: MP

Effective date: 20230628

PG25 Lapsed in a contracting state [announced via postgrant information from national office to epo]

Ref country code: RS

Free format text: LAPSE BECAUSE OF FAILURE TO SUBMIT A TRANSLATION OF THE DESCRIPTION OR TO PAY THE FEE WITHIN THE PRESCRIBED TIME-LIMIT

Effective date: 20230628

Ref country code: NL

Free format text: LAPSE BECAUSE OF FAILURE TO SUBMIT A TRANSLATION OF THE DESCRIPTION OR TO PAY THE FEE WITHIN THE PRESCRIBED TIME-LIMIT

Effective date: 20230628

Ref country code: LV

Free format text: LAPSE BECAUSE OF FAILURE TO SUBMIT A TRANSLATION OF THE DESCRIPTION OR TO PAY THE FEE WITHIN THE PRESCRIBED TIME-LIMIT

Effective date: 20230628

Ref country code: LT

Free format text: LAPSE BECAUSE OF FAILURE TO SUBMIT A TRANSLATION OF THE DESCRIPTION OR TO PAY THE FEE WITHIN THE PRESCRIBED TIME-LIMIT

Effective date: 20230628

Ref country code: HR

Free format text: LAPSE BECAUSE OF FAILURE TO SUBMIT A TRANSLATION OF THE DESCRIPTION OR TO PAY THE FEE WITHIN THE PRESCRIBED TIME-LIMIT

Effective date: 20230628

Ref country code: GR

Free format text: LAPSE BECAUSE OF FAILURE TO SUBMIT A TRANSLATION OF THE DESCRIPTION OR TO PAY THE FEE WITHIN THE PRESCRIBED TIME-LIMIT

Effective date: 20230929

PG25 Lapsed in a contracting state [announced via postgrant information from national office to epo]

Ref country code: FI

Free format text: LAPSE BECAUSE OF FAILURE TO SUBMIT A TRANSLATION OF THE DESCRIPTION OR TO PAY THE FEE WITHIN THE PRESCRIBED TIME-LIMIT

Effective date: 20230628

PG25 Lapsed in a contracting state [announced via postgrant information from national office to epo]

Ref country code: SK

Free format text: LAPSE BECAUSE OF FAILURE TO SUBMIT A TRANSLATION OF THE DESCRIPTION OR TO PAY THE FEE WITHIN THE PRESCRIBED TIME-LIMIT

Effective date: 20230628

PG25 Lapsed in a contracting state [announced via postgrant information from national office to epo]

Ref country code: ES

Free format text: LAPSE BECAUSE OF FAILURE TO SUBMIT A TRANSLATION OF THE DESCRIPTION OR TO PAY THE FEE WITHIN THE PRESCRIBED TIME-LIMIT

Effective date: 20230628

PG25 Lapsed in a contracting state [announced via postgrant information from national office to epo]

Ref country code: IS

Free format text: LAPSE BECAUSE OF FAILURE TO SUBMIT A TRANSLATION OF THE DESCRIPTION OR TO PAY THE FEE WITHIN THE PRESCRIBED TIME-LIMIT

Effective date: 20231028

PG25 Lapsed in a contracting state [announced via postgrant information from national office to epo]

Ref country code: SM

Free format text: LAPSE BECAUSE OF FAILURE TO SUBMIT A TRANSLATION OF THE DESCRIPTION OR TO PAY THE FEE WITHIN THE PRESCRIBED TIME-LIMIT

Effective date: 20230628

Ref country code: SK

Free format text: LAPSE BECAUSE OF FAILURE TO SUBMIT A TRANSLATION OF THE DESCRIPTION OR TO PAY THE FEE WITHIN THE PRESCRIBED TIME-LIMIT

Effective date: 20230628

Ref country code: RO

Free format text: LAPSE BECAUSE OF FAILURE TO SUBMIT A TRANSLATION OF THE DESCRIPTION OR TO PAY THE FEE WITHIN THE PRESCRIBED TIME-LIMIT

Effective date: 20230628

Ref country code: PT

Free format text: LAPSE BECAUSE OF FAILURE TO SUBMIT A TRANSLATION OF THE DESCRIPTION OR TO PAY THE FEE WITHIN THE PRESCRIBED TIME-LIMIT

Effective date: 20231030

Ref country code: IS

Free format text: LAPSE BECAUSE OF FAILURE TO SUBMIT A TRANSLATION OF THE DESCRIPTION OR TO PAY THE FEE WITHIN THE PRESCRIBED TIME-LIMIT

Effective date: 20231028

Ref country code: ES

Free format text: LAPSE BECAUSE OF FAILURE TO SUBMIT A TRANSLATION OF THE DESCRIPTION OR TO PAY THE FEE WITHIN THE PRESCRIBED TIME-LIMIT

Effective date: 20230628

Ref country code: EE

Free format text: LAPSE BECAUSE OF FAILURE TO SUBMIT A TRANSLATION OF THE DESCRIPTION OR TO PAY THE FEE WITHIN THE PRESCRIBED TIME-LIMIT

Effective date: 20230628

Ref country code: CZ

Free format text: LAPSE BECAUSE OF FAILURE TO SUBMIT A TRANSLATION OF THE DESCRIPTION OR TO PAY THE FEE WITHIN THE PRESCRIBED TIME-LIMIT

Effective date: 20230628

PG25 Lapsed in a contracting state [announced via postgrant information from national office to epo]

Ref country code: PL

Free format text: LAPSE BECAUSE OF FAILURE TO SUBMIT A TRANSLATION OF THE DESCRIPTION OR TO PAY THE FEE WITHIN THE PRESCRIBED TIME-LIMIT

Effective date: 20230628

REG Reference to a national code

Ref country code: DE

Ref legal event code: R097

Ref document number: 502020003952

Country of ref document: DE

PG25 Lapsed in a contracting state [announced via postgrant information from national office to epo]

Ref country code: DK

Free format text: LAPSE BECAUSE OF FAILURE TO SUBMIT A TRANSLATION OF THE DESCRIPTION OR TO PAY THE FEE WITHIN THE PRESCRIBED TIME-LIMIT

Effective date: 20230628

PGFP Annual fee paid to national office [announced via postgrant information from national office to epo]

Ref country code: DE

Payment date: 20240320

Year of fee payment: 5

PLBE No opposition filed within time limit

Free format text: ORIGINAL CODE: 0009261

STAA Information on the status of an ep patent application or granted ep patent

Free format text: STATUS: NO OPPOSITION FILED WITHIN TIME LIMIT

PGFP Annual fee paid to national office [announced via postgrant information from national office to epo]

Ref country code: IT

Payment date: 20240329

Year of fee payment: 5

26N No opposition filed

Effective date: 20240402