EP0037549B1 - Coaxial adjacent supported strand guiding rollers in a continuous casting plant for steel - Google Patents

Coaxial adjacent supported strand guiding rollers in a continuous casting plant for steel Download PDF

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Publication number
EP0037549B1
EP0037549B1 EP81102404A EP81102404A EP0037549B1 EP 0037549 B1 EP0037549 B1 EP 0037549B1 EP 81102404 A EP81102404 A EP 81102404A EP 81102404 A EP81102404 A EP 81102404A EP 0037549 B1 EP0037549 B1 EP 0037549B1
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EP
European Patent Office
Prior art keywords
guide rollers
billet
bearing journals
coupling disc
adjacent
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Expired
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EP81102404A
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German (de)
French (fr)
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EP0037549A1 (en
Inventor
Hans Streubel
Hans Otto Thörner
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SMS Siemag AG
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SMS Schloemann Siemag AG
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Priority to AT81102404T priority Critical patent/ATE3253T1/en
Publication of EP0037549A1 publication Critical patent/EP0037549A1/en
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    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B22—CASTING; POWDER METALLURGY
    • B22D—CASTING OF METALS; CASTING OF OTHER SUBSTANCES BY THE SAME PROCESSES OR DEVICES
    • B22D11/00—Continuous casting of metals, i.e. casting in indefinite lengths
    • B22D11/12—Accessories for subsequent treating or working cast stock in situ
    • B22D11/128—Accessories for subsequent treating or working cast stock in situ for removing
    • B22D11/1287—Rolls; Lubricating, cooling or heating rolls while in use

Definitions

  • the invention relates to coaxially adjacent, independently supported strand guide rollers in a steel continuous casting plant for slabs according to the preamble of claim 1 and is based on a prior art as described in DE-B2-2 544 556.
  • the guide rollers of continuous casting plants are exposed to high mechanical alternating stresses with each revolution due to the ferrostatic pressure that acts on the strand, which can amount to more than 100 tons per roll in slab plants. Additional stress on the rollers is caused by the shock-like temperature increase of the roller surface with every contact with the hot strand. Depending on the strength of the roll material, these mechanical and thermal loads require a certain roll diameter.
  • the respective roll diameter requires a certain minimum distance and thus the size of the unsupported areas between successive rolls.
  • the interdependency between the permissible roll load, the strand width, the crust thickness, the ferrostatic pressure, the roll diameter and the distance between successive rolls limits the casting speed for large casting formats, since harmful bulges and breakthroughs must be avoided.
  • Strands with widths of, for example, over 2 m wide and at least 150 mm thick either require costly strand guiding frames or can only be cast with a relatively short liquid core or only at a relatively slow speed in the case of vertical or arched strand guiding.
  • a known strand guide roller consists of several roller sections, the one-sided pins of which are screwed into recesses in the adjacent roller section, a support bearing being provided between the roller sections.
  • a cooling channel (DE-B1-2 420 514) runs through the roller sections.
  • a strand guide is also known, two guide rollers each being mounted coaxially adjacent to one another over the strand width (DE-B2-2544556).
  • the guide rollers can be installed and removed more quickly.
  • the disadvantage here is that if there is a strand lying on one side only on one roll, the coaxially adjacent other roll stops and is subjected to high thermal stresses due to one-sided overheating by the strand. This promotes the formation of fire cracks in this area and, despite cooling, the roll is bent towards the strand.
  • the bearings are subjected to high loads.
  • the out-of-round running of the guide roller can lead to uneven support of the strand and thus to strand errors.
  • the cooling system is complex with two adjacent roles.
  • the invention is intended to avoid the disadvantages of the known strand guides. Your task is to create a structurally simple, maintenance-friendly and inexpensive strand guide with coaxially adjacent, independently mounted guide rollers, whereby non-uniform thermal stress on cooled guide rollers is avoided and uniform, good strand support is ensured without excessive roller and bearing loads leading to greater wear to lead. This is intended to extend the service life of such rollers with their bearings.
  • the clutch disk for receiving flatly formed drivers of the guide rollers in the manner of an Oldham clutch is provided on both sides with a slot which run perpendicular to one another, the outer diameter of the clutch disk being equal to or larger than the diameter of the roller journal. This coupling also makes it possible to compensate for larger axis deviations of the neighboring guide rollers.
  • the support of the casting strand can be further improved according to a further feature of the invention in that the clutch disc has the same outer diameter as the associated coaxially adjacent guide rollers. In this way, the unsupported area caused by the adjacent roller bearings is extended to the width of the Housing of a roller bearing reduced.
  • square pins can be arranged on the adjacent bearing pins of the guide rollers, to which a corresponding recess is assigned on each side of the clutch disc.
  • the square pin can advantageously be configured with cambered side surfaces in order to reduce the surface pressure in the event of radial displacements.
  • Simplification of the coolant flow into the interior of the roll can be achieved in that the clutch disc and / or the adjacent roll journals have devices for connecting the coolant flow from one roll to the adjacent roll.
  • the coolant can also flow through both rollers in one direction if the outer pin of one roller is provided with an inflow and the outer pin of the other roller is provided with a drain.
  • the coolant channel in the area of the clutch disc is expanded to form an annular groove.
  • the strand support is finally further improved in that the bearings of successive guide rollers in the strand running direction are offset in the axial direction.
  • the clutch disc can advantageously be designed in a ring shape, the driver surfaces being designed as internal teeth.
  • an arcuate strand guide arranged downstream of a mold 1 is formed by successively arranged guide rollers 2 and 3.
  • the guide rollers 3 are driven.
  • 2 and 3 show sections of two alternative configurations of the roller guide.
  • two strand guide rollers 2a, 2b, 3a, 3b, or 2c, 2d, 3c, 3d are coaxially adjacent in two bearings 4, 5 and 6, 7 and 8, 9 and 10, 11 each independently.
  • the guide rollers 2a and 2b or 2c and 2d are each provided with an inner channel 12 for the passage of a coolant, with rotary unions 13, 14 being arranged on the outer pins of the rollers.
  • the driven strand guide rollers 3b and 3d are provided with a drive flange 15.
  • the internal cooling of the coaxially mounted guide rollers 3a, 3b and 3c, 3d takes place according to the reversal principle in two concentric channels 16, 17, with the coolant being fed in and out through a double rotary feedthrough 18 on the outer pins of the guide rollers 3a and 3c he follows.
  • the adjacent bearings 5, 6 and 9, 10 of successive guide rollers are offset from one another in the axial direction for better support of the strand.
  • a clutch disc 19 is arranged between the guide rollers 2a, 2b and 3a, 3b, respectively. This area is shown enlarged in FIGS. 4 and 5.
  • the connection of the guide rollers 2a and 2b as well as 3a and 3b is based on the principle of the Oldham coupling, which enables the compensation of axis deviations.
  • the clutch disc 19, as shown in FIG. 5, is provided on both sides with a slot, 20 and 21, which are perpendicular to each other.
  • Flat pins 22 and 23 are arranged on the pins of the guide rollers 2a, 2b, 3a, 3b, which are slidably inserted into the slots 20, 21 of the clutch disc 19.
  • the diameter of the coupling disk 19 is larger than the largest height of the drivers 22 and 23. In this way, sufficiently strong transmission cross sections 24, 25 and 26, 27 are ensured.
  • the coolant channels 12 of the guide rollers 2a and 2b, 3a, 3b are connected by a tube piece 28 inserted sealingly into the roller journals.
  • the bearings 5, 6 are each provided on the strand side with a cooling jacket 33, 34 formed by the sheets 31, 32.
  • the sheets 31, 32 are guided for shielding via the clutch disc 19.
  • a clutch plate 35 is arranged between the bearings 9 and 10 of the guide rollers 2c, 2d and 3c, 3d.
  • This embodiment is shown enlarged in detail in FIGS. 6 and 7.
  • the clutch disc 35 is provided on both sides with holes 36 for centering on the pins of the rollers 2c, 2d, 3c, 3d.
  • the pins are each provided with a square 37, each of which fits into a corresponding recess 38 in the clutch disc 35.
  • the cooling channels 16 of the coaxial guide rollers 2c, 2d, 3c, 3d are connected by pipe pieces 39, 40 inserted into a through bore of the clutch disc 35, which are inserted in the cooling channels 16 in a sealing manner. Between the pipe sections 39, 40 is the Clutch disc 35 for cooling by an annular groove 41 extended.
  • the outer diameter of the clutch disc 35 is equal to the outer diameter of the adjacent guide rollers 2c, 2d and 3c, 3d.
  • the clutch disc 35 is provided on each side with an annular groove 42, in each of which a bearing ring 43 engages.
  • the clutch disc (19 or 35) can also be designed annular, the driving surfaces z. B. are designed as internal teeth.

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  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Continuous Casting (AREA)
  • Rolls And Other Rotary Bodies (AREA)
  • Metal Rolling (AREA)

Abstract

An arrangement of coaxial neighbouring, mutually independently mounted strand guide rolls for use in a continuous casting installation for casting steel slabs is disclosed. At the region of the path of travel of the cast slab mutually neighbouring bearing or roll journals of two cooled strand guide rolls are interconnected by a coupling means which can be mounted upon the bearing or roll journals. The coupling means is provided with entrainment surfaces for the rotational movement of the guide rolls. These entrainment surfaces coact with the bearing or roll journals.

Description

Die Erfindung betrifft koaxial benachbart, unabhängig voneinander gelagerte Strangführungsrollen in einer Stahl-Stranggießanlage für Brammen gemäß Oberbegriff von Anspruch 1 und geht hierbei von einem Stand der Technik aus wie er in der DE-B2-2 544 556 beschrieben ist.The invention relates to coaxially adjacent, independently supported strand guide rollers in a steel continuous casting plant for slabs according to the preamble of claim 1 and is based on a prior art as described in DE-B2-2 544 556.

Die Führungsrollen von Stranggießanlagen sind bei jeder Umdrehung durch den auf die Strang kruste wirkenden ferrostatischen Druck einer hohen mechanischen Wechselbeanspruchung ausgesetzt, welche bei Brammenanlagen über 100 Tonnen pro Rolle betragen kann. Eine zusätzliche Beanspruchung der Rollen wird durch die schockartige Temperaturerhöhung der Rollenoberfläche bei jedem Kontakt mit dem heißen Strang bewirkt. Diese mechanischen und thermischen Beanspruchungen erfordern je nach Festigkeit des Rollenmaterials einen bestimmten Rollendurchmesser.The guide rollers of continuous casting plants are exposed to high mechanical alternating stresses with each revolution due to the ferrostatic pressure that acts on the strand, which can amount to more than 100 tons per roll in slab plants. Additional stress on the rollers is caused by the shock-like temperature increase of the roller surface with every contact with the hot strand. Depending on the strength of the roll material, these mechanical and thermal loads require a certain roll diameter.

Der jeweilige Rollendurchmesser bedingt einen bestimmten Mindestabstand und damit die Größe der ungestützten Flächen zwischen aufeinanderfolgenden Rollen. Die wechselseitige Abhängigkeit zwischen zulässiger Rollenbelastung, der Strangbreite, der Krustendicke, des ferrostatischen Drucks, des Rollendurchmessers und des Abstandes aufeinanderfolgender Rollen begrenzt bei großen Gießformaten die Gießgeschwindigkeit, da schädliche Ausbauchungen und Durchbrüche vermieden werden müssen. Stränge mit Breiten von beispielsweise über 2 m Breite und mindestens 150 mm Dicke benötigen entweder kostspielige Strangführungsgerüste oder können bei senkrechter oder bogenförmiger Strangführung nur mit relativ kurzem flüssigem Kern bzw. nur mit relativ geringer Geschwindigkeit gegossen werden.The respective roll diameter requires a certain minimum distance and thus the size of the unsupported areas between successive rolls. The interdependency between the permissible roll load, the strand width, the crust thickness, the ferrostatic pressure, the roll diameter and the distance between successive rolls limits the casting speed for large casting formats, since harmful bulges and breakthroughs must be avoided. Strands with widths of, for example, over 2 m wide and at least 150 mm thick either require costly strand guiding frames or can only be cast with a relatively short liquid core or only at a relatively slow speed in the case of vertical or arched strand guiding.

Um ein Abgießen von Strängen größerer Breite bei höherer Gießgeschwindigkeit zu ermöglichen, ist es bereits bekannt, an Stelle durchgehender Führungsrollen mehrfach gelagerte Führungsrollen zu verwenden. Eine bekannte Strangführungsrolle besteht aus mehreren Rollenabschnitten, deren einseitige Zapfen in Ausnehmungen des benachbarten Rollenabschnittes eingeschraubt sind, wobei zwischen den Rollenabschnitten jeweils ein Stützlager vorgesehen ist. Durch die Rollenabschnitte verläuft ein Kühlkanal (DE-B1-2 420 514). Bei dieser konstruktiv aufwendigen Strangführungsrolle gestaltet sich die Montage und das Auswechseln der Rollen umständlich und zeitraubend. Da die Verbindungszapfen starken Biegebeanspruchungen ausgesetzt sind, können die Rollenabschnitte zur Verringerung der Lagerstellen nicht wesentlich verlängert werden. Ein weiterer Nachteil dieser Führungsrolle ist es, daß an der Verbindungsstelle zwischen Rolle und Zapfen der Wärmeübergang behindert wird, so daß eine gleichmäßige Kühlung über die Rollenlänge nicht gewährleistet ist.In order to enable casting of strands of greater width at a higher casting speed, it is already known to use guide rollers with multiple bearings instead of continuous guide rollers. A known strand guide roller consists of several roller sections, the one-sided pins of which are screwed into recesses in the adjacent roller section, a support bearing being provided between the roller sections. A cooling channel (DE-B1-2 420 514) runs through the roller sections. With this structurally complex strand guide roller, the assembly and replacement of the rollers is cumbersome and time-consuming. Since the connecting pins are exposed to strong bending stresses, the roller sections cannot be significantly lengthened to reduce the bearing points. Another disadvantage of this guide roller is that the heat transfer is hindered at the junction between the roller and the pin, so that uniform cooling over the length of the roller is not guaranteed.

Es ist weiterhin eine Strangführung bekannt, wobei über die Strangbreite jeweils zwei Führungsrollen koaxial benachbart gelagert sind (DE-B2-2544556). Bei dieser kostengünstigen Bauweise können die Führungsrollen schneller ein- und ausgebaut werden. Nachteilig ist hierbei jedoch, daß bei einseitig nur an einer Rolle anliegendem Strang die koaxial benachbarte andere Rolle stehenbleibt und wegen einseitiger Überhitzung durch den Strang thermisch hoch beansprucht wird. Dadurch wird in diesem Bereich die Brandrißbildung gefördert und die Rolle trotz Kühlung zum Strang hin durchgebogen. Bei erneutem Kontakt mit dem Strang werden die Lager stark beansprucht. Der unrunde Lauf der Führungsrolle kann zu einer ungleichmäßigen Abstützung des Stranges und damit zu Strangfehlern führen. Weiterhin ist das Kühlsystem bei zwei benachbarten Rollen aufwendig.A strand guide is also known, two guide rollers each being mounted coaxially adjacent to one another over the strand width (DE-B2-2544556). With this inexpensive design, the guide rollers can be installed and removed more quickly. The disadvantage here, however, is that if there is a strand lying on one side only on one roll, the coaxially adjacent other roll stops and is subjected to high thermal stresses due to one-sided overheating by the strand. This promotes the formation of fire cracks in this area and, despite cooling, the roll is bent towards the strand. When the strand comes into contact again, the bearings are subjected to high loads. The out-of-round running of the guide roller can lead to uneven support of the strand and thus to strand errors. Furthermore, the cooling system is complex with two adjacent roles.

Mit der Erfindung sollen die Nachteile der bekannten Strangführungen vermieden werden. Ihre Aufgabe ist die Schaffung einer konstruktiv einfachen, wartungsfreundlichen und kostengünstigen Strangführung mit koaxial benachbart, unabhängig voneinander gelagerten Führungsrollen, wobei eine ungleichmäßige thermische Beanspruchung von gekühlten Führungsrollen vermieden und eine gleichmäßige, gute Strangabstützung gewährleistet ist, ohne daß überhöhte Rollen- und Lagerbelastungen zu stärkerem Verschleiß führen. Dadurch soll die Standzeit solcher Rollen mit ihren Lagern verlängert werden.The invention is intended to avoid the disadvantages of the known strand guides. Your task is to create a structurally simple, maintenance-friendly and inexpensive strand guide with coaxially adjacent, independently mounted guide rollers, whereby non-uniform thermal stress on cooled guide rollers is avoided and uniform, good strand support is ensured without excessive roller and bearing loads leading to greater wear to lead. This is intended to extend the service life of such rollers with their bearings.

Nach der Erfindung wird dies gemäß den Kennzeichen merkmalen von Anspruch 1 erreicht.According to the invention, this is achieved according to the characteristics of claim 1.

Dadurch wird erreicht, daß sich die koaxial benachbart unabhängig voneinander gelagerten Strangführungsrollen unabhängig von einseitigem Strangkontakt fortlaufend drehen und nicht mehr auf einer Seite durch den Strang überhitzt werden. Auf diese Weise wird die Lebensdauer der Führungsrollen und Lager verlängert und eine gleichmäßige Strangabstützung gewährleistet.It is thereby achieved that the coaxially adjacent strand guide rollers, which are mounted independently of one another, rotate continuously, regardless of one-sided strand contact, and are no longer overheated on one side by the strand. This extends the life of the guide rollers and bearings and ensures even strand support.

Gemäß einem weiteren Merkmal der Erfindung ist die Kupplungsscheibe zur Aufnahme flach ausgebildeter Mitnehmer der Führungsrollen in der Art einer Oldham-Kupplung beidseits mit einem Schlitz versehen, die senkrecht zueinander verlaufen, wobei der Außendurchmesser der Kupplungsscheibe gleich oder größer ist als der Durchmesser der Rollenzapfen. Diese Kupplung ermöglicht auch den Ausgleich größerer Achsabweichungen der benachbarten Führungsrollen.According to a further feature of the invention, the clutch disk for receiving flatly formed drivers of the guide rollers in the manner of an Oldham clutch is provided on both sides with a slot which run perpendicular to one another, the outer diameter of the clutch disk being equal to or larger than the diameter of the roller journal. This coupling also makes it possible to compensate for larger axis deviations of the neighboring guide rollers.

Die Abstützung des Gießstranges kann gemäß einem weiteren Merkmal der Erfindung dadurch zusätzlich verbessert werden, daß die Kupplungsscheibe einen gleichen Außendurchmesser aufweist wie die zugeordneten koaxial benachbarten Führungsrollen. Auf diese Weise wird der durch die benachbart angeordneten Rollenlager bedingte ungestützte Bereich auf die Breite des Gehäuses eines Rollenlagers reduziert.The support of the casting strand can be further improved according to a further feature of the invention in that the clutch disc has the same outer diameter as the associated coaxially adjacent guide rollers. In this way, the unsupported area caused by the adjacent roller bearings is extended to the width of the Housing of a roller bearing reduced.

An den benachbarten Lagerzapfen der Führungsrollen können alternativ Vierkantzapfen angeordnet sein, denen an jeder Seite der Kupplungsscheibe eine entsprechende Ausnehmung zugeordnet ist.Alternatively, square pins can be arranged on the adjacent bearing pins of the guide rollers, to which a corresponding recess is assigned on each side of the clutch disc.

Der Vierkantzapfen kann vorteilhaft mit bombierten Seitenflächen ausgestaltet werden, um die Flächenpressung bei radialen Verlagerungen zu vermindern.The square pin can advantageously be configured with cambered side surfaces in order to reduce the surface pressure in the event of radial displacements.

Eine Vereinfachung der Kühlmittelführung in das Rolleninnere kann dadurch erreicht werden, daß die Kupplungsscheibe und/oder die benachbarten Rollenzapfen Einrichtungen zur Verbindung der Kühlmittelführungen von einer Rolle zur benachbarten Rolle aufweisen. Man erhält so die Möglichkeit bei im Gegenstrom geführtem Kühlmittel die Anschlüsse für beide Rollen raumsparend am äußeren Zapfen einer Führungsrolle anzuordnen. Man kann das Kühlmittel aber auch in einer Richtung durch beide Rollen strömen lassen, wenn der äußere Zapfen einer Rolle mit einem Zufluß und der äußere Zapfen der anderen Rolle mit einem Abfluß versehen wird.Simplification of the coolant flow into the interior of the roll can be achieved in that the clutch disc and / or the adjacent roll journals have devices for connecting the coolant flow from one roll to the adjacent roll. This gives the possibility of arranging the connections for both rollers in a space-saving manner on the outer journal of a guide roller with coolant guided in countercurrent. However, the coolant can also flow through both rollers in one direction if the outer pin of one roller is provided with an inflow and the outer pin of the other roller is provided with a drain.

Zur Erzielung einer guten Innenkühlung ist der Kühlmittelkanal im Bereich der Kupplungsscheibe zu einer Ringnut erweitert.In order to achieve good internal cooling, the coolant channel in the area of the clutch disc is expanded to form an annular groove.

Die Strangabstützung wird schließlich dadurch weiter verbessert, daß die Lager von in Stranglaufrichtung aufeinanderfolgenden Führungsrollen in Achsrichtung gegeneinander versetzt sind.The strand support is finally further improved in that the bearings of successive guide rollers in the strand running direction are offset in the axial direction.

Die Kupplungsscheibe kann vorteilhafterweise ringförmig gestaltet sein, wobei die Mitnehmerflächen als Innenverzahnung ausgebildet sind.The clutch disc can advantageously be designed in a ring shape, the driver surfaces being designed as internal teeth.

In der Zeichnung sind Ausführungsbeispiele der Erfindung dargestellt. Es zeigen ;

  • Figur 1 schematisch die Seitenansicht einer Stranggießanlage,
  • Figur 2 einen aus mehreren koaxial benachbart gelagerten Führungsrollen bestehenden Abschnitt der Strangführung,
  • Figur 3 einen anderen aus mehreren koaxial benachbart gelagerten Führungsrollen bestehenden Abschnitt der Strangführung,
  • Figur 4 im Teilschnitt zwei benachbart gelagerte Führungsrollen mit einer zwischengeordneten Kupplungsscheibe gemäß Fig. 2,
  • Figur 5 die Ansicht der Kupplungsscheibe gemäß Fig. 4,
  • Figur 6 im Teilschnitt zwei benachbart gelagerte Führungsrollen mit einer zwischengeordneten Kupplungsscheibe gemäß Fig. 3,
  • Figur 7 einen Querschnitt gemäß der Schnittlinie in Fig. 6.
Exemplary embodiments of the invention are shown in the drawing. Show it ;
  • FIG. 1 shows schematically the side view of a continuous caster,
  • FIG. 2 shows a section of the strand guide consisting of a plurality of coaxially adjacent guide rollers,
  • 3 shows another section of the strand guide consisting of a plurality of coaxially adjacent guide rollers, FIG.
  • 4 shows in partial section two adjacent guide rollers with an intermediate clutch disc according to FIG. 2,
  • 5 shows the view of the clutch disc according to FIG. 4,
  • FIG. 6 in partial section two adjacent guide rollers with an intermediate clutch disc according to FIG. 3,
  • 7 shows a cross section along the section line in FIG. 6.

In der in Fig. 1 dargestellten Stranggießanlage ist eine einer Kokille 1 nachgeordnete bogenförmige Strangführung durch aufeinanderfolgend angeordnete Führungsrollen 2 und 3 gebildet. Die Führungsrollen 3 sind angetrieben.In the continuous casting installation shown in FIG. 1, an arcuate strand guide arranged downstream of a mold 1 is formed by successively arranged guide rollers 2 and 3. The guide rollers 3 are driven.

Die Fig. 2 und 3 zeigen Ausschnitte zweier alternativer Ausbildungen der Rollenführung. In beiden Ausbildungen sind jeweils zwei Strangführungsrollen 2a, 2b, 3a, 3b, bzw. 2c, 2d, 3c, 3d koaxial benachbart in je zwei Lagern 4, 5 und 6, 7 bzw. 8, 9 und 10, 11 unabhängig voneinander gelagert. Die Führungsrollen 2a und 2b bzw. 2c und 2d sind mit je einem inneren Kanal 12 zum Durchfluß eines Kühlmittels versehen, wobei an den äußeren Zapfen der Rollen Drehdurchführungen 13, 14 angeordnet sind. Die angetriebenen Strangführungsrollen 3b und 3d sind mit einem Antriebsflansch 15 versehen. Hierbei erfolgt die Innenkühlung der koaxial gelagerten Führungsrollen 3a, 3b bzw. 3c, 3d nach dem Umkehrprinzip in zwei konzentrischen Kanälen 16, 17, wobei die Zu- und Ableitung des Kühlmittels durch eine doppelte Drehdurchführung 18 an den äußeren Zapfen der Führungsrollen 3a bzw. 3c erfolgt. Sowohl in der Ausbildung nach Fig. 2 als auch nach der Ausbildung in Fig. 3 sind die benachbarten Lager 5, 6 bzw. 9, 10 aufeinanderfolgender Führungsrollen zur besseren Abstützung des Stranges in Achsrichtung gegeneinander versetzt.2 and 3 show sections of two alternative configurations of the roller guide. In both designs, two strand guide rollers 2a, 2b, 3a, 3b, or 2c, 2d, 3c, 3d are coaxially adjacent in two bearings 4, 5 and 6, 7 and 8, 9 and 10, 11 each independently. The guide rollers 2a and 2b or 2c and 2d are each provided with an inner channel 12 for the passage of a coolant, with rotary unions 13, 14 being arranged on the outer pins of the rollers. The driven strand guide rollers 3b and 3d are provided with a drive flange 15. The internal cooling of the coaxially mounted guide rollers 3a, 3b and 3c, 3d takes place according to the reversal principle in two concentric channels 16, 17, with the coolant being fed in and out through a double rotary feedthrough 18 on the outer pins of the guide rollers 3a and 3c he follows. Both in the embodiment according to FIG. 2 and after the embodiment in FIG. 3, the adjacent bearings 5, 6 and 9, 10 of successive guide rollers are offset from one another in the axial direction for better support of the strand.

Gemäß Fig. 2 ist zwischen den Führungsrollen 2a, 2b bzw. 3a, 3b je eine Kupplungsscheibe 19 angeordnet. Dieser Bereich ist vergrößert in den Fig. 4 und 5 dargestellt. Die Verbindung der Führungsrollen 2a und 2b sowie 3a und 3b erfolgt nach dem Prinzip der Oldham-Kupplung, die einen Ausgleich von Achsabweichungen ermöglicht. Dazu ist die Kupplungsscheibe 19, wie Fig. 5 zeigt, auf beiden Seiten mit je einem Schlitz,20 und 21 versehen, die senkrecht zueinander verlaufen. An den Zapfen der Führungsrollen 2a, 2b, 3a 3b sind flach ausgebildete Mitnehmer 22 bzw. 23 angeordnet, die in die Schlitze 20, 21 der Kupplungsscheibe 19 passend eingeschoben sind. Der Durchmesser der Kupptungssoheibe 19 ist größer a)s die größte Höhe der Mitnehmer 22 und 23. Auf diese Weise werden ausreichend starke Kraftübertragungsquerschnitte 24, 25 und 26, 27 gewährleistet.2, a clutch disc 19 is arranged between the guide rollers 2a, 2b and 3a, 3b, respectively. This area is shown enlarged in FIGS. 4 and 5. The connection of the guide rollers 2a and 2b as well as 3a and 3b is based on the principle of the Oldham coupling, which enables the compensation of axis deviations. For this purpose, the clutch disc 19, as shown in FIG. 5, is provided on both sides with a slot, 20 and 21, which are perpendicular to each other. Flat pins 22 and 23 are arranged on the pins of the guide rollers 2a, 2b, 3a, 3b, which are slidably inserted into the slots 20, 21 of the clutch disc 19. The diameter of the coupling disk 19 is larger than the largest height of the drivers 22 and 23. In this way, sufficiently strong transmission cross sections 24, 25 and 26, 27 are ensured.

Die Kühlmittelkanäle 12 der Führungsrollen 2a und 2b, 3a, 3b sind durch ein in die Rollenzapfen dichtend eingesetztes Rohrstück 28 verbunden.The coolant channels 12 of the guide rollers 2a and 2b, 3a, 3b are connected by a tube piece 28 inserted sealingly into the roller journals.

Zum Schutze der Wälzlager 29, 30 sind die Lager 5, 6 an der Strangseite mit je einem durch die Bleche 31, 32 gebildeten Kühlmantel 33, 34 versehen. Die Bleche 31, 32 sind zur Abschirmung über die Kupplungsscheibe 19 geführt.To protect the roller bearings 29, 30, the bearings 5, 6 are each provided on the strand side with a cooling jacket 33, 34 formed by the sheets 31, 32. The sheets 31, 32 are guided for shielding via the clutch disc 19.

Bei der Ausführung gemäß Fig. 3 ist je eine Kupplungsscheibe 35 zwischen den Lagern 9 und 10 der Führungsrollen 2c, 2d bzw. 3c, 3d angeordnet. Diese Ausführung ist im Ausschnitt vergrößert in den Fig. 6 und 7 dargestellt. Danach ist die Kupplungsscheibe 35 beidseits mit Bohrungen 36 zur Zentrierung auf den Zapfen der Rollen 2c, 2d, 3c, 3d versehen. Zur Drehmomentübertragung sind die Zapfen mit je einem Vierkant 37 versehen, die in je eine entsprechende Ausnehmung 38 der Kupplungsscheibe 35 passen. Die Kühlkanäle 16 der koaxialen Führungsrollen 2c, 2d, 3c, 3d sind durch in eine Durchgangsbohrung der Kupplungsscheibe 35 eingesetzte Rohrstücke 39, 40 verbunden, die dichtend in den Kühlkanälen 16 eingeschoben sind. Zwischen den Rohrstücken 39, 40 ist die Kupplungsscheibe 35 zur Kühlung durch eine Ringnut 41 erweitert.3, a clutch plate 35 is arranged between the bearings 9 and 10 of the guide rollers 2c, 2d and 3c, 3d. This embodiment is shown enlarged in detail in FIGS. 6 and 7. Thereafter, the clutch disc 35 is provided on both sides with holes 36 for centering on the pins of the rollers 2c, 2d, 3c, 3d. For torque transmission, the pins are each provided with a square 37, each of which fits into a corresponding recess 38 in the clutch disc 35. The cooling channels 16 of the coaxial guide rollers 2c, 2d, 3c, 3d are connected by pipe pieces 39, 40 inserted into a through bore of the clutch disc 35, which are inserted in the cooling channels 16 in a sealing manner. Between the pipe sections 39, 40 is the Clutch disc 35 for cooling by an annular groove 41 extended.

Der Außendurchmesser der Kupplungsscheibe 35 ist gleich den Außendurchmessern der benachbarten Führungsrollen 2c, 2d bzw. 3c, 3d. Dadurch wird der Gießstrang zwischen den Lagern 9, 10 durch die Kupplungsscheibe 35 abgestützt, wodurch der ungestützte Bereich auf die Breite eines Lagers 9 bzw. 10 beschränkt wird.The outer diameter of the clutch disc 35 is equal to the outer diameter of the adjacent guide rollers 2c, 2d and 3c, 3d. As a result, the casting strand between the bearings 9, 10 is supported by the clutch disc 35, whereby the unsupported area is limited to the width of a bearing 9 and 10, respectively.

Zur Abdichtung ist die Kupplungsscheibe 35 auf jeder Seite mit einer Ringnut 42 versehen, in die je ein Lagerring 43 eingreift.For sealing purposes, the clutch disc 35 is provided on each side with an annular groove 42, in each of which a bearing ring 43 engages.

Die Kupplungsscheibe (19 bzw. 35) kann auch ringförmig gestaltet sein, wobei die Mitnehmerflächen z. B. als Innenverzahnung ausgebildet sind.The clutch disc (19 or 35) can also be designed annular, the driving surfaces z. B. are designed as internal teeth.

Claims (9)

1. In a continuous steel slab casting plant, billet guide rollers (2a, 2b, 3a, 3b, 2c, 2d, 3c, 3d) mounted coaxially and adjacently and provided with two bearing journals each, two billet guide rollers (2a, 2b, 3a, 3b, 2c, 2d, 3c, 3d) having respective bearing journals, of which the ends face one another with a gap therebetween, in the region of the slab billet, characterized in that the bearing journals with facing ends are interconnected by a coupling disc (19 or 35) which may be fitted onto the bearing journals and which has on both sides entrainment surfaces cooperating with the bearing journals for rotation.
2. Billet guide rollers according to Claim 1, characterized in that the coupling disc (19) is provided with a slot (20, 21) on both sides for receiving shallow entrainment members (22, 23) of the guide rollers (2a, 2b, 3a, 3b) in the manner of an Oldham coupling, the said slots extending at right angles to one another and the external diameter of the coupling disc being greater than the diameter of the bearing journals.
3. Billet guide rollers according to Claim 1, characterized in that the coupling disc (35) has an external diameter equal to the facing coaxially adjacent guide rollers (2c, 2d, 3c, 3d).
4. Billet guide rollers according to Claim 1 or 3, characterized in that square pins (37), with which a corresponding recess (38) is associated on each side of the coupling disc (35), are provided on the adjacent bearing journals of the guide rollers (2c, 2d, 3c, 3d).
5. Billet guide rollers according to any one of Claims 1 to 4, characterized in that one of the adjacent guide rollers (3b, 3d) is provided with a drive.
6. Billet guide rollers according to any one of Claims 1 to 5, characterized in that the coupling disc (19 or 35) and/or the adjacent bearing journals comprise means for connecting the coolant supply and discharge ducts from one roller to the adjacent roller.
7. Billet guide rollers according to Claim 6, characterized in that the coolant supply duct (16) is enlarged to form an annular groove (41) in the region of the coupling disc..
8. Billet guide rollers according to any one of Claims 1 to 7, characterized in that the bearings (5, 6 and 9, 10 respectively) of consecutive guide rollers (2a, 2b, 3a, 3b and 2c, 2d, 3c, 3d respectively) are offset relative to one another in the axial direction.
9. Billet guide rollers according to Claim 1, characterized in that the coupling disc (19 or 35) is annular, and the entrainment surfaces are internal toothing.
EP81102404A 1980-04-08 1981-03-31 Coaxial adjacent supported strand guiding rollers in a continuous casting plant for steel Expired EP0037549B1 (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
AT81102404T ATE3253T1 (en) 1980-04-08 1981-03-31 COAXIALLY POSITIONED STRAND GUIDE ROLLERS IN A STEEL CONTINUOUS CASTING PLANT FOR SLABS.

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE3013484 1980-04-08
DE19803013484 DE3013484A1 (en) 1980-04-08 1980-04-08 COAXIAL NEXT BEARING STRAIGHT GUIDE ROLLS IN A STEEL CONTINUOUS CASTING SYSTEM FOR SLABS

Publications (2)

Publication Number Publication Date
EP0037549A1 EP0037549A1 (en) 1981-10-14
EP0037549B1 true EP0037549B1 (en) 1983-05-11

Family

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Family Applications (1)

Application Number Title Priority Date Filing Date
EP81102404A Expired EP0037549B1 (en) 1980-04-08 1981-03-31 Coaxial adjacent supported strand guiding rollers in a continuous casting plant for steel

Country Status (7)

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US (1) US4485836A (en)
EP (1) EP0037549B1 (en)
JP (1) JPS574367A (en)
AT (1) ATE3253T1 (en)
CA (1) CA1170814A (en)
DE (2) DE3013484A1 (en)
ES (1) ES268984Y (en)

Families Citing this family (13)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR2604498B1 (en) * 1986-09-30 1988-12-02 Fives Cail Babcock SEALING DEVICE FOR THE INTERMEDIATE BEARING OF A ROLL WITH MULTIPLE SUPPORTS
US5649889A (en) * 1994-10-06 1997-07-22 Bethlehem Steel Corporation Stress alleviating guide roll for high temperature applications
DE19836537C1 (en) * 1998-08-06 1999-09-23 Mannesmann Ag Slab guide roll for a continuous metal, in particular, steel continuous casting installation
DE10109893C1 (en) * 2001-02-21 2002-08-22 Mannesmann Roehren Werke Ag Device for connecting the cooling medium guide coaxially mounted internally cooled rollers
DE102006040011A1 (en) * 2006-04-21 2007-10-25 Sms Demag Ag Guiding roller for guiding a cast strand, e.g. slab, comprises a plug-type connection between a second partial roller and the roller pin of a first partial roller to join the partial rollers together and a middle bearing
WO2010005354A1 (en) * 2008-07-08 2010-01-14 Aktiebolaget Skf A roll line in a continuous caster
US20110213486A1 (en) * 2008-11-04 2011-09-01 Sms Siemag Aktiengesellschaft Method and device for controlling the solidification of a cast strand in a strand casting plant in startup of the injection process
CN103587915A (en) * 2012-08-17 2014-02-19 中钢集团衡阳重机有限公司 Roller bed bearing block positioning device and manufacturing and application methods thereof
EP3041620B1 (en) * 2013-09-04 2019-11-06 Aktiebolaget SKF Roll line assembly for continuous casting
SE1451560A1 (en) * 2014-12-17 2015-11-10 Skf Ab Coupling arrangement for an idler roll line
AT517252B1 (en) * 2015-05-27 2019-03-15 Primetals Technologies Austria GmbH Avoidance of waterways in a strand guide
EP3880486A4 (en) 2018-11-16 2022-06-01 Hewlett-Packard Development Company, L.P. Co-axial split drive rollers
AT526034A1 (en) * 2022-08-09 2023-08-15 Primetals Technologies Austria GmbH Strand guide roller for guiding a metallic strand in a continuous casting plant

Family Cites Families (11)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3347308A (en) * 1965-09-10 1967-10-17 United Steel Companies Ltd Machines for continuously casting metal
DE2420514B1 (en) * 1974-04-27 1975-07-10 Kloeckner-Werke Ag, 4100 Duisburg Guide roller with multiple bearings and subdivided into roller sections for continuous casting plants
DE2428213C3 (en) * 1974-06-11 1980-10-09 Schloemann-Siemag Ag, 4000 Duesseldorf Strand guide frame in a continuous caster
DE2439359C3 (en) * 1974-08-16 1982-10-07 SMS Schloemann-Siemag AG, 4000 Düsseldorf Strand guide frame in a continuous caster
JPS5722124Y2 (en) * 1975-06-24 1982-05-13
AT336207B (en) * 1975-07-18 1977-04-25 Voest Ag FIXING FOR LONG-DIRECTIONAL MULTIPLE DIVIDED ROLLERS IN CONTINUOUS CASTING PLANTS
DE2544556C3 (en) * 1975-10-04 1978-09-21 Demag Ag, 4100 Duisburg Support roller frame for steel slab caster, especially for curved slab caster
US3981348A (en) * 1975-10-20 1976-09-21 Allis-Chalmers Corporation Support and lubrication system for continuous casting machine rollers
JPS554135Y2 (en) * 1976-05-18 1980-01-30
CH596911A5 (en) * 1976-09-24 1978-03-31 Concast Ag
AT344349B (en) * 1976-10-13 1978-07-10 Voest Ag STRIP GUIDE ROLLER FOR CONTINUOUS CASTING PLANTS

Also Published As

Publication number Publication date
ES268984U (en) 1983-10-16
US4485836A (en) 1984-12-04
DE3013484A1 (en) 1981-10-15
CA1170814A (en) 1984-07-17
ATE3253T1 (en) 1983-05-15
EP0037549A1 (en) 1981-10-14
ES268984Y (en) 1984-04-01
DE3160259D1 (en) 1983-06-16
JPS574367A (en) 1982-01-09

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