EP0369555A2 - Apparatus for the production of hot-rolled steel strip from a continuously cast material - Google Patents

Apparatus for the production of hot-rolled steel strip from a continuously cast material Download PDF

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Publication number
EP0369555A2
EP0369555A2 EP89250047A EP89250047A EP0369555A2 EP 0369555 A2 EP0369555 A2 EP 0369555A2 EP 89250047 A EP89250047 A EP 89250047A EP 89250047 A EP89250047 A EP 89250047A EP 0369555 A2 EP0369555 A2 EP 0369555A2
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EP
European Patent Office
Prior art keywords
sets
stand
rolling
strip
stretch
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EP89250047A
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German (de)
French (fr)
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EP0369555A3 (en
Inventor
Emil Kersting
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Vodafone GmbH
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Mannesmann AG
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    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B21—MECHANICAL METAL-WORKING WITHOUT ESSENTIALLY REMOVING MATERIAL; PUNCHING METAL
    • B21B—ROLLING OF METAL
    • B21B1/00—Metal-rolling methods or mills for making semi-finished products of solid or profiled cross-section; Sequence of operations in milling trains; Layout of rolling-mill plant, e.g. grouping of stands; Succession of passes or of sectional pass alternations
    • B21B1/46—Metal-rolling methods or mills for making semi-finished products of solid or profiled cross-section; Sequence of operations in milling trains; Layout of rolling-mill plant, e.g. grouping of stands; Succession of passes or of sectional pass alternations for rolling metal immediately subsequent to continuous casting
    • B21B1/463—Metal-rolling methods or mills for making semi-finished products of solid or profiled cross-section; Sequence of operations in milling trains; Layout of rolling-mill plant, e.g. grouping of stands; Succession of passes or of sectional pass alternations for rolling metal immediately subsequent to continuous casting in a continuous process, i.e. the cast not being cut before rolling
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B21—MECHANICAL METAL-WORKING WITHOUT ESSENTIALLY REMOVING MATERIAL; PUNCHING METAL
    • B21B—ROLLING OF METAL
    • B21B31/00—Rolling stand structures; Mounting, adjusting, or interchanging rolls, roll mountings, or stand frames
    • B21B31/02—Rolling stand frames or housings; Roll mountings ; Roll chocks
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B21—MECHANICAL METAL-WORKING WITHOUT ESSENTIALLY REMOVING MATERIAL; PUNCHING METAL
    • B21B—ROLLING OF METAL
    • B21B2265/00—Forming parameters
    • B21B2265/02—Tension
    • B21B2265/06—Interstand tension

Definitions

  • the invention relates to a method and a device for carrying out the method for producing hot-rolled steel strip from a strip-shaped continuous material.
  • Such a method and a device for carrying out the method is known for example from DE-OS 36 37 893.
  • the rolling out to the finished strip be carried out continuously in a maximum of three or four roll stands with the greatest possible pass reduction in order to keep the investment costs of a hot strip rolling mill low and to be able to work economically even with small production quantities.
  • the proposed solution is to be seen in connection with the idea of casting the continuously cast starting material with a small thickness in order to arrive at a strip that is ready for further processing or finished with as few passes as possible.
  • the basic requirement is to roll out the final cross-section of the rolled strip that is capable of further processing with as few rolling passes as possible or on as few stands as possible; it would be ideal to completely do without roll stands can, that is, to produce a further processable band only by casting.
  • a major problem with the rolling of continuously cast primary material is the very slow tapping speed in the first roll stand, which is influenced by the casting speed and which causes a great temperature loss between the successive stands.
  • the object of the invention is to create a method and an apparatus for carrying out the method with which it is possible to perform a perform maximum stitch acceptance in minimum rolling passes.
  • a method is proposed according to the invention, which is characterized in that the preliminary strip is stretched at least in two successive sets of rolls under controlled tension.
  • the stretch of the rolled strip ie the setting of a defined tension between two successive sets of rolls, it becomes possible to place the sets of rolls so closely together that the cooling between the successive sets of rolls becomes low.
  • the train also enables more favorable deformation and an improvement in rolling flatness by stretching the rolled pre-strip while reducing it.
  • the device for carrying out the method is characterized in that the stretch-reducing roller sets are arranged one behind the other with a minimal distance.
  • the direct arrangement behind one another results in less heat radiation, so that it is also possible to drive with higher stitch reductions.
  • the close arrangement of the roller sets one after the other depends on the design conditions.
  • a particularly favorable constructive arrangement is seen in the fact that the space-consuming roller stands between the two successive roller sets are dispensed with, in that the roller sets are accommodated in a common stand.
  • tension members reducing the springing of the stand are arranged between the stretch-reducing roller sets. These tension members take up little space and still guarantee good stability of the rolling stand against bending from the rolling forces.
  • the tension members can be adapted to different rolling forces if, according to a further proposal of the invention, the tension members are designed to be variable in length. In connection with a control of the length changeability of the tension members depending on the rolling force, those forces can be set which are necessary to achieve a flat strip cross-section with a precisely defined thickness.
  • the reduced-stretch roller sets can have a common drive, the stretching being adjustable via torque or speed-controlled superimposed motors.
  • a device for regulating the rolling temperature is provided behind a stand which holds the stretch-reducing roll set.
  • This can consist, for example, in an oven and / or a cooling device, so that the rolling temperature or the subsequent stands can be set in an optimal manner.
  • the continuous casting mold to which the continuous sheet casting installation 2 of conventional construction is connected, is designated in a highly simplified manner by 1. If necessary, the continuous casting strand can already be deformed in the curved part or immediately thereafter.
  • a furnace 4 is connected to the continuous caster behind a pair of scissors 3, behind which the rolling mill according to the invention is arranged, which will be described in detail below.
  • a further pair of scissors 6 and a winding device for the rolled strip 7 are provided.
  • the first two sets of rolls in 8a, 8b in the rolling mill are arranged in a common stand 8 such that the rolls are immediately adjacent.
  • a cross-sectional reduction of 50% is carried out in the roller set 8b, for example of 40%.
  • the roller set 8b is driven at a slightly higher speed than the roller set 8a, so that in addition to the reduction of the rolling stock, a train is exerted on it.
  • the direct succession of the roller sets 8a and 8b keeps the cooling between the roller sets low
  • the rolling in the roll stand 8 enables a reduction in the rolling force and thus a higher pass reduction and an improvement in the flatness of the rolling stock.
  • the arrangement also saves space, so that a very compact system design is possible.
  • the rolling stock After leaving the rolling stand 8, the rolling stock passes through one or two roller sets 9, if necessary, before it is wound up at 7 and separated by the scissors 6 after the coil weight has been reached.
  • the first roll stand here consists of three roll sets which are arranged in the stand 8 and are designated 8a, 8b and 8c.
  • the three Roll sets are also directly adjacent here, so that the same advantages are achieved as are described for FIG. 1.
  • the stitch reduction in the first stand for example, is also 50% in the second stand, 40% and in the third stand, 35%.
  • the rolling stock is finally rolled and treated as described in FIG. 1.
  • FIG 3 shows an alternative in which two stands are provided, in each of which two sets of rollers are installed.
  • the roller sets of the first stand 8 are designated 8a and 8b, those of the second stand 8c and 8d.
  • a device 10 for tempering the strip is arranged between the two stands, which may consist of an oven for heating the rolling stock or a device for cooling the rolling stock.
  • a temperature increase can take place, which necessitates cooling. With less deformation, the temperature can also drop, so that heating is necessary.
  • a roll stand is indicated schematically in FIG. 4 that a particularly space-saving arrangement of the two sets of rolls is possible in that a common large stand window 12 is provided on each stand side, in which tie rods 11 are provided between the roll sets, acting parallel to the rolling force.
  • These tie rods 11 can be formed from rods which are variable in length according to the proposals of the invention and the lengths of which can be regulated as a function of the rolling force. In this way, a space-consuming stand is spared, without having to fear an unauthorized opening of the scaffold.
  • the invention advantageously enables controlled rolling in closely arranged roller sets, which becomes particularly important when working with small work rolls and relatively large back-up rolls which specify the distance between the work rolls of two adjacent roll sets because of the high deformation.
  • the support rollers can be built so close together that the distance between the work rolls is optimally close to each other in terms of heat loss.

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  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Metal Rolling (AREA)

Abstract

The invention relates to a method for the production of hot-rolled steel strip from a continuously cast material, in which the material, after solidification, is fed into a continuous rolling mill which works the material with as high a reduction per pass as possible and whose sets of rolls are arranged at a minimum distance one behind the other. In order to provide a method and an apparatus for the method with which method or apparatus it is possible to carry out a maximum reduction per pass in minimum roll passes, it is proposed that the feed strip be reduced under controlled tension at least in two successive sets of rolls. <IMAGE>

Description

Die Erfindung betrifft ein Verfahren und eine Vorrichtung zum Durchführen des Verfahrens zum Herstellen von warmgewalztem Stahlband aus einem bandförmig stranggegossenem Vormaterial.The invention relates to a method and a device for carrying out the method for producing hot-rolled steel strip from a strip-shaped continuous material.

Ein derartiges Verfahren und eine Vorrichtung zur Durchführung des Verfahrens ist beispielsweise aus der DE-OS 36 37 893 bekannt. Bei diesem Stand der Technik wird vorgeschlagen, das Auswalzen zum Fertigband kontinuierlich in maximal drei oder vier Walzgerüsten mit möglichst hoher Stichabnahme vorzunehmen, um den Investitionsaufwand eines Warmbandwalzwerkes niedrig zu halten und auch bei kleinen Produktionsmengen wirtschaftlich arbeiten zu können. Die vorgesehene Lösung ist im Zusammenhang mit der Idee zu sehen, das stranggegossene Vormaterial mit geringer Dicke zu gießen, um mit so wenig wie möglich Walzstichen zu einem weiterverarbeitungsfähigen oder fertigen Band zu gelangen.Such a method and a device for carrying out the method is known for example from DE-OS 36 37 893. In this prior art, it is proposed that the rolling out to the finished strip be carried out continuously in a maximum of three or four roll stands with the greatest possible pass reduction in order to keep the investment costs of a hot strip rolling mill low and to be able to work economically even with small production quantities. The proposed solution is to be seen in connection with the idea of casting the continuously cast starting material with a small thickness in order to arrive at a strip that is ready for further processing or finished with as few passes as possible.

Gleichgültig, ob das vorgesehene Verfahren on-line, d. h. kontinuierlich vom gegossenen Vorband bis zum ausgewalzten Fertigband betrieben wird oder eine Zwischenspeicherung vorgenommen wird, es sind jeweils die Gesetzmäßigkeiten des Konti-Gesetzes zu beachten, die Abhängigkeiten zwischen der Querschnittabnahme des Walzgutes und der Walzgeschwindigkeit festlegt.Regardless of whether the proposed method is on-line, i. H. is continuously operated from the cast pre-strip to the rolled-out finished strip or is stored temporarily, the laws of the Konti Act must be observed in each case, which determines the dependencies between the cross-sectional decrease of the rolling stock and the rolling speed.

Wie oben bereits dargelegt, besteht die Grundforderung, den weiterverarbeitungsfähigen Endquerschnitt des gewalzten Bandes mit möglichst wenigen Walzstichen bzw. auf möglichst wenigen Gerüsten auszuwalzen; ideal wäre es, vollkommen auf Walzgerüste verzichten zu können, d.h., ein weiterverarbeitungsfähiges Band nur durch Gießen herzustellen.As already explained above, the basic requirement is to roll out the final cross-section of the rolled strip that is capable of further processing with as few rolling passes as possible or on as few stands as possible; it would be ideal to completely do without roll stands can, that is, to produce a further processable band only by casting.

Ein wesentliches Problem beim Walzen stranggegossenem Vormaterials besteht in der von der Gießgeschwindigkeit beeinflußten sehr langsamen Anstichgeschwindigkeit im ersten Walzgerüst, die einen starken Temperaturverlust zwischen den aufeinanderfolgenden Gerüsten verursacht.A major problem with the rolling of continuously cast primary material is the very slow tapping speed in the first roll stand, which is influenced by the casting speed and which causes a great temperature loss between the successive stands.

Ausgehend von den Forderungen, ein Walzen mit geringer Geschwindigkeit auf möglichst wenigen Gerüsten in platz- und kostensparender Weise durchzuführen liegt der Erfindung die Aufgabe zugrunde, ein Verfahren und eine Vorrichtung zur Durchführung des Verfahrens zu schaffen, mit dem bzw. der es möglich ist, eine maximale Stichabnahme in minimalen Walzstichen durchzuführen.Based on the requirements to perform rolling at a low speed on as few stands as possible in a space-saving and cost-saving manner, the object of the invention is to create a method and an apparatus for carrying out the method with which it is possible to perform a perform maximum stitch acceptance in minimum rolling passes.

Zur Lösung der Aufgabe wird erfindungsgemäß ein Verfahren vorgeschlagen, das dadurch gekennzeichnet ist, daß das Vorband mindestens in zwei aufeinanderfolgenden Walzensätzen unter geregeltem Zug streckreduziert wird. Durch das Streckreduzieren des Walzbandes, d. h. der Einstellung eines definierten Zuges zwischen zwei aufeinanderfolgenden Walzensätzen wird es möglich, die Walzensätze so eng aneinanderzusetzen, daß die Abkühlung zwischen den aufeinanderfolgenden Walzensätzen gering wird. Der Zug ermöglichst darüber hinaus eine günstigere Verformung und eine Verbesserung der Walzplanheit durch das Strecken des gewalzten Vorbandes bei gleichzeitigem Reduzieren.To achieve the object, a method is proposed according to the invention, which is characterized in that the preliminary strip is stretched at least in two successive sets of rolls under controlled tension. By reducing the stretch of the rolled strip, ie the setting of a defined tension between two successive sets of rolls, it becomes possible to place the sets of rolls so closely together that the cooling between the successive sets of rolls becomes low. The train also enables more favorable deformation and an improvement in rolling flatness by stretching the rolled pre-strip while reducing it.

Die Vorrichtung zur Durchführung des Verfahrens ist dadurch gekennzeichnet, daß die streckreduzierenden Walzensätze mit minimalem Abstand hintereinander angeordnet sind. Wie bereits dargelegt, ergibt sich durch die unmittelbare Hintereinanderanordnung eine geringere Wärmeabstrahlung, so daß auch mit höheren Stichabnahmen gefahren werden kann.The device for carrying out the method is characterized in that the stretch-reducing roller sets are arranged one behind the other with a minimal distance. As already explained, the direct arrangement behind one another results in less heat radiation, so that it is also possible to drive with higher stitch reductions.

Die enge Hintereinanderanordnung der Walzensätze ist von den konstruktiven Gegebenheiten abhängig. Eine besonders günstige konstruktive Anordnung wird darin gesehen, daß auf die platzbeanspruchenden Walzenständer zwischen den beiden aufeinanderfolgenden Walzensätzen verzichtet wird, indem die Walzensätze in einem gemeinsamen Gerüst untergebracht sind.The close arrangement of the roller sets one after the other depends on the design conditions. A particularly favorable constructive arrangement is seen in the fact that the space-consuming roller stands between the two successive roller sets are dispensed with, in that the roller sets are accommodated in a common stand.

Nach einer günstigen Ausgestaltung der Erfindung sind zwischen den Streckreduzierenden Walzensätzen die Auffederung des Gerüstes mindernde Zugglieder angeordnet. Diese Zugglieder benötigen wenig Platz und garantieren trotzdem eine gute Stabilität des Walzgerüstes gegen Aufbiegung aus den Walzkräften.According to a favorable embodiment of the invention, tension members reducing the springing of the stand are arranged between the stretch-reducing roller sets. These tension members take up little space and still guarantee good stability of the rolling stand against bending from the rolling forces.

Eine Anpassung der Zugglieder an unterschiedliche Walzkräfte ist dann möglich, wenn nach einem weiteren Vorschlag der Erfindung vorgesehen ist, die Zugglieder längenveränderbar zu gestalten. In Verbindung mit einer walzkraftabhängigen Regelung der Längenveränderbarkeit der Zugglieder sind diejenigen Kräfte einstellbar, die zur Erlangung eines planen Bandquerschnittes mit exakt definierter Dicke notwendig sind.The tension members can be adapted to different rolling forces if, according to a further proposal of the invention, the tension members are designed to be variable in length. In connection with a control of the length changeability of the tension members depending on the rolling force, those forces can be set which are necessary to achieve a flat strip cross-section with a precisely defined thickness.

Die streckreduzierten Walzensätze können einen gemeinsamen Antrieb aufweisen, wobei die Streckung über drehmoment- oder drehzahlgeregelte Überlagerungsmotoren einstellbar ist.The reduced-stretch roller sets can have a common drive, the stretching being adjustable via torque or speed-controlled superimposed motors.

Schließlich wird vorgeschlagen, daß hinter einem den streckreduzierenden Walzensatz aufnehmenden Gerüst eine Einrichtung zum Regeln der Walztemperatur vorgesehen ist. Diese kann beispielsweise in einem Ofen und/oder einer Kühleinrichtung bestehen, so daß die Walztemperatur das oder die nachfolgenden Gerüste in optimaler Weise eingestellt werden kann.Finally, it is proposed that a device for regulating the rolling temperature is provided behind a stand which holds the stretch-reducing roll set. This can consist, for example, in an oven and / or a cooling device, so that the rolling temperature or the subsequent stands can be set in an optimal manner.

Ausführungsbeispiele der Erfindung sind in Zeichnungen dargestellt und werden nachfolgend beschreiben. Es zeigt:

  • Fig. 1 eine erfindungsgemäße Walzstraße im Anschluß an eine Stranggießanlage mit im ersten Gerüst angeordneten zwei Walzensätzen,
  • Fig. 2 ein erstes Walzgerüst mit drei Walzensätzen,
  • Fig. 3 zwei Gerüste mit jeweils zwei Walzensätzen und dazwischen angeordneter Einrichtung zur Temperaturregelung und
  • Fig. 4 grob schematisch ein erfindungsgemäßes Walzgerüst mit zwei Walzensätzen und Zuganker.
Embodiments of the invention are shown in drawings and are described below. It shows:
  • 1 shows a rolling mill according to the invention following a continuous caster with two sets of rolls arranged in the first stand,
  • 2 shows a first roll stand with three sets of rolls,
  • Fig. 3 two stands, each with two sets of rollers and a device for temperature control and arranged in between
  • Fig. 4 roughly schematically an inventive roll stand with two sets of rolls and tie rods.

In Figur 1 ist groß vereinfacht mit 1 die Stranggießkokille bezeichnet, an die sich die Bogenstranggießanlage 2 herkömmlicher Bauart anschließt. Gegebenenfalls kann im Bogenteil oder unmittelbar daran schließend bereits eine Verformung des Stranggießstranges vorgenommen werden.In FIG. 1, the continuous casting mold, to which the continuous sheet casting installation 2 of conventional construction is connected, is designated in a highly simplified manner by 1. If necessary, the continuous casting strand can already be deformed in the curved part or immediately thereafter.

An die Stranggießanlage schließt sich hinter einer Schere 3 ein Ofen 4 an, hinter dem das erfindungsgemäße Walzwerk angeordnet ist, welches nachfolgend noch im einzelnen beschrieben wird. Im Anschluß an das Walzwerk 5 ist eine weitere Schere 6 sowie eine Aufwickelvorrichtung für das gewalzte Band 7 vorgesehen.A furnace 4 is connected to the continuous caster behind a pair of scissors 3, behind which the rolling mill according to the invention is arranged, which will be described in detail below. Following the rolling mill 5, a further pair of scissors 6 and a winding device for the rolled strip 7 are provided.

Wie in Figur 1 schematisch dargestellt, sind die im Walzwerk ersten beiden Walzensätze in 8a, 8b in einem gemeinsamen Gerüst 8 derart angeordnet, daß die Walzen unmittelbar benachbart sind. In dem ersten Walzensatz 8a wird beispielsweise eine Querschnittsreduktion von 50 % in dem Walzensatz 8b beispielsweise von 40 % vorgenommen. Der Walzensatz 8b ist gegenüber dem Walzensatz 8a mit geringfügig höherer Geschwindigkeit angetrieben, so daß neben der Reduktion des Walzgutes auf dieses ein Zug ausgeübt wird. Während die unmittelbare Hintereinanderanordnung der Walzensätze 8a und 8b die Abkühlung zwischen den Walzensätzen gering hält, ermöglicht das Walzen im Walzgerüst 8 eine Walzkraftminderung und damit höhere Stichabnahme sowie eine Verbesserung der Planheit des Walzgutes. Die Anordnung spart darüber hinaus auch Platz, so daß eine sehr kompakte Anlagenkonstruktion möglich wird.As shown schematically in FIG. 1, the first two sets of rolls in 8a, 8b in the rolling mill are arranged in a common stand 8 such that the rolls are immediately adjacent. In the first roller set 8a, for example, a cross-sectional reduction of 50% is carried out in the roller set 8b, for example of 40%. The roller set 8b is driven at a slightly higher speed than the roller set 8a, so that in addition to the reduction of the rolling stock, a train is exerted on it. While the direct succession of the roller sets 8a and 8b keeps the cooling between the roller sets low, the rolling in the roll stand 8 enables a reduction in the rolling force and thus a higher pass reduction and an improvement in the flatness of the rolling stock. The arrangement also saves space, so that a very compact system design is possible.

Nach Verlassen des Walzgerüstes 8 durchläuft das Walzgut bei Bedarf noch ein oder zwei Walzensätze 9, bevor es bei 7 aufgehaspelt und nach Erreichen des Bundgewichtes durch die Schere 6 abgetrennt wird.After leaving the rolling stand 8, the rolling stock passes through one or two roller sets 9, if necessary, before it is wound up at 7 and separated by the scissors 6 after the coil weight has been reached.

In Figur 2 sind gleiche Teile 2 bezeichnet. Im Unterschied zur Figur 1 besteht hier das erste Walzgerüst aus drei Walzensätzen, die in dem Gerüst 8 angeordnet und mit 8a, 8b und 8c bezeichnet sind. Die drei Walzensätze sind auch hier unmittelbar benachbart, so daß die gleichen Vorteile erreicht werden, wie sie zur Figur 1 beschrieben sind. Die Stichabnahme beträgt im ersten Gerüst beispielsweise ebenfalls 50 % im zweiten Gerüst 40 % und im dritten Gerüst 35 %. In einem letzten Stich im Gerüst 9 wird das Walzgut endgewalzt und wie in Figur 1 beschrieben, weiterbehandelt.The same parts 2 are designated in FIG. In contrast to FIG. 1, the first roll stand here consists of three roll sets which are arranged in the stand 8 and are designated 8a, 8b and 8c. The three Roll sets are also directly adjacent here, so that the same advantages are achieved as are described for FIG. 1. The stitch reduction in the first stand, for example, is also 50% in the second stand, 40% and in the third stand, 35%. In a last pass in the stand 9, the rolling stock is finally rolled and treated as described in FIG. 1.

Figur 3 zeigt eine Alternative, bei der zwei Gerüste vorgesehen sind, in denen jeweils zwei Walzensätze installiert sind. Die Walzensätze des ersten Gerüstes 8 sind mit 8a und 8b, die des zweiten Gerüstes mit 8c und 8d bezeichnet. Zwischen beiden Gerüsten ist eine Einrichtung 10 zum Temperieren des Bandes angeordnet, die aus einem Ofen zum Erwärmen des Walzgutes oder einer Einrichtung zum Kühlen des Walzgutes bestehen kann. Infolge der hohen Verformung im ersten Walzgerüst kann eine Temperaturerhöhung erfolgen, die ein Kühlen erforderlich macht. Bei geringerer Verformung kann die Temperatur auch absinken, so daß ein Erwärmen notwendig ist.Figure 3 shows an alternative in which two stands are provided, in each of which two sets of rollers are installed. The roller sets of the first stand 8 are designated 8a and 8b, those of the second stand 8c and 8d. A device 10 for tempering the strip is arranged between the two stands, which may consist of an oven for heating the rolling stock or a device for cooling the rolling stock. As a result of the high deformation in the first roll stand, a temperature increase can take place, which necessitates cooling. With less deformation, the temperature can also drop, so that heating is necessary.

In Figur 4 ist schematisch ein Walzgerüst angedeutet, daß eine besonders platzsparende Hintereinanderanordnung der beiden Walzensätze dadurch ermöglicht, daß ein gemeinsames großes Ständerfenster 12 auf jeder Gerüstseite vorgesehen ist, in denen zwischen den Walzensätzen parallel zur Walzkraft wirkende Zuganker 11 vorgesehen sind. Diese Zuganker 11 können aus Stangen gebildet werden, die nach den Vorschlägen der Erfindung längenveränderbar und deren Längen walzkraftabhängig regelbar sind. Auf diese Weise wird ein platzaufwendiger Ständer erspart, ohne eine unzulässige Auffederung des Gerüstes befürchten zu müssen.A roll stand is indicated schematically in FIG. 4 that a particularly space-saving arrangement of the two sets of rolls is possible in that a common large stand window 12 is provided on each stand side, in which tie rods 11 are provided between the roll sets, acting parallel to the rolling force. These tie rods 11 can be formed from rods which are variable in length according to the proposals of the invention and the lengths of which can be regulated as a function of the rolling force. In this way, a space-consuming stand is spared, without having to fear an unauthorized opening of the scaffold.

Die Erfindung ermöglicht in vorteilhafter Weise ein geregeltes Walzen in dicht hintereinander angeordneten Walzensätzen, was besonders dann Bedeutung erlangt, wenn wegen der hohen Verformung mit kleinen Arbeits- und relativ großen Stützwalzen gearbeitet wird, die den Abstand der Arbeitswalzen zweier benachbarter Walzensätze vorgeben. Durch die Anordnung der zwei oder drei Walzensätze in einem Gerüst können die Stützwalzen so optimal dicht nebeneinander gebaut werden, daß der Abstand der Arbeitswalzen wärmeverlustmäßig optimal dicht nebeneinander möglich ist.The invention advantageously enables controlled rolling in closely arranged roller sets, which becomes particularly important when working with small work rolls and relatively large back-up rolls which specify the distance between the work rolls of two adjacent roll sets because of the high deformation. By arranging the two or three sets of rollers in a stand, the support rollers can be built so close together that the distance between the work rolls is optimally close to each other in terms of heat loss.

Claims (7)

1. Verfahren zum Herstellen von warmgewalztem Stahlband aus einem bandförmig stranggegossenem Vormaterial, bei dem das Vormaterial nach Erstarrung in ein mit möglichst hoher Stichabnahme verformendes kontinuierliches Walzwerk eingeführt wird, dessen Walzensätze mit minimalem Abstand hintereinander angeordnet sind, dadurch gekennzeichnet,
daß das Vorband mindestens in zwei aufeinanderfolgenden Walzensätzen unter geregeltem Zug reduziert wird.1. A process for the production of hot-rolled steel strip from a strip-shaped, continuously cast starting material, in which, after solidification, the starting material is introduced into a continuous rolling mill that deforms with the greatest possible decrease in pass, the roll sets of which are arranged one behind the other, characterized in that
that the support strip is reduced at least in two successive sets of rolls under controlled tension. 2. Vorrichtung nach Anspruch 1,
dadurch gekennzeichnet,
daß die streckreduzierenden Walzensätze in einem gemeinsamen Gerüst angeordnet sind.2. Device according to claim 1,
characterized,
that the stretch-reducing roller sets are arranged in a common frame. 3. Vorrichtung nach Anspruch 1,
dadurch gekennzeichnet,
daß zwischen den streckreduzierenden Walzensätzen die Auffederung des Gerüstes mindernde, in Walzkraftrichtung angeordnete Zugglieder vorgesehen sind.3. Device according to claim 1,
characterized,
that tension elements which reduce the spring deflection of the stand and are arranged in the direction of the rolling force are provided between the stretch-reducing roller sets. 4. Vorrichtung nach Anspruch 3,
dadurch gekennzeichnet,
daß die Zugglieder längenveränderbar sind.4. The device according to claim 3,
characterized,
that the tension members are adjustable in length. 5. Vorrichtung nach Anspruch 4,
dadurch gekennzeichnet,
daß die Längenveränderbarkeit der Zugglieder walzkraftabhängig regelbar ist.5. The device according to claim 4,
characterized,
that the length variability of the tension members can be regulated depending on the rolling force. 6. Vorrichtung nach Anspruch 2,
dadurch gekennzeichnet,
daß die streckreduzierenden Walzensätze einen gemeinsamen Antrieb aufweisen.6. The device according to claim 2,
characterized,
that the stretch-reducing roller sets have a common drive. 7. Vorrichtung nach Anspruch 1 und 2,
dadurch gekennzeichnet,
daß hinter einem den streckreduzierenden Walzensatz aufnehmenden Gerüst eine Einrichtung zum Regeln der Walztemperatur vorgesehen ist.7. The device according to claim 1 and 2,
characterized,
that a device for regulating the rolling temperature is provided behind a stand which receives the stretch-reducing roll set.
EP19890250047 1988-11-17 1989-10-02 Apparatus for the production of hot-rolled steel strip from a continuously cast material Withdrawn EP0369555A3 (en)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE3839151 1988-11-17
DE19883839151 DE3839151A1 (en) 1988-11-17 1988-11-17 METHOD FOR PRODUCING HOT-ROLLED STEEL STRIP FROM A STRIP-SHAPED PRE-MATERIAL

Publications (2)

Publication Number Publication Date
EP0369555A2 true EP0369555A2 (en) 1990-05-23
EP0369555A3 EP0369555A3 (en) 1991-01-16

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EP (1) EP0369555A3 (en)
DE (1) DE3839151A1 (en)

Cited By (9)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP0553480A2 (en) * 1991-12-27 1993-08-04 Hitachi, Ltd. Rolling mill, rolling method and rolling mill system
DE4322924C1 (en) * 1993-07-05 1994-10-27 Mannesmann Ag Method and apparatus for the production of hot-rolled carbon-containing steel strip
EP0666122A1 (en) * 1994-01-27 1995-08-09 Sms Schloemann-Siemag Aktiengesellschaft Method and installation for manufacturing hot-rolled steel strip from a continuously cast material
WO1997027012A1 (en) * 1996-01-23 1997-07-31 Siemens Aktiengesellschaft System and method for rolling slabs
WO1997036699A1 (en) * 1996-03-28 1997-10-09 Mannesmann Ag Method and arrangement for producing hot-rolled steel strip
GB2322320A (en) * 1997-02-21 1998-08-26 Kvaerner Metals Cont Casting Continuous casting with rolling stages separated by a temperature controlling stage
US5806357A (en) * 1996-01-23 1998-09-15 Siemens Aktiengesellschaft System and method for rolling tapered slabs
US5810069A (en) * 1993-02-16 1998-09-22 Voest-Alpine Industrieanlagen Gmbh Process for the production of a strip, a pre-strip or a slab
DE102011006357A1 (en) 2010-10-08 2012-04-12 Sms Siemag Ag Rolling mill for producing a metal strip and method for producing a rolling mill

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* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE4203984C3 (en) * 1992-02-12 2000-07-27 Eko Stahl Gmbh Process for reducing work roll wear in the production of hot wide strip from thin slabs
JP3174457B2 (en) * 1994-05-17 2001-06-11 株式会社日立製作所 Continuous casting direct hot rolling equipment and rolling method
CN101618398B (en) * 2009-08-06 2013-03-20 攀钢集团攀枝花钢铁研究院有限公司 Method for controlling internal defects of steel

Citations (9)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3368381A (en) * 1964-04-29 1968-02-13 Josef F Frohling Preloaded roll frame structure
DE1816799A1 (en) * 1968-05-29 1969-12-04 Voest Ag Process for rolling strands cast using the continuous casting process
US3580033A (en) * 1968-02-16 1971-05-25 Loire Atel Forges Rolling mill for producing thin strip stock
DE2057960A1 (en) * 1970-11-25 1972-06-08 Schloemann Ag Double duo-mill stand - exchangeable top casting for rolling semi-finished prod
JPS6156708A (en) * 1984-08-28 1986-03-22 Sumitomo Metal Ind Ltd Line of continuous hot rolling mill equipment
JPS6250008A (en) * 1985-08-30 1987-03-04 Mitsubishi Heavy Ind Ltd Rolling mill
JPS63177904A (en) * 1987-01-16 1988-07-22 Sumitomo Metal Ind Ltd Continuous hot finish rolling equipment
EP0311126A2 (en) * 1987-10-09 1989-04-12 Hitachi, Ltd. Control method for plate material hot rolling equipment
EP0266564B1 (en) * 1986-11-06 1992-04-01 Sms Schloemann-Siemag Aktiengesellschaft Strip casting installation with a following multiple stand continuous rolling mill

Patent Citations (9)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3368381A (en) * 1964-04-29 1968-02-13 Josef F Frohling Preloaded roll frame structure
US3580033A (en) * 1968-02-16 1971-05-25 Loire Atel Forges Rolling mill for producing thin strip stock
DE1816799A1 (en) * 1968-05-29 1969-12-04 Voest Ag Process for rolling strands cast using the continuous casting process
DE2057960A1 (en) * 1970-11-25 1972-06-08 Schloemann Ag Double duo-mill stand - exchangeable top casting for rolling semi-finished prod
JPS6156708A (en) * 1984-08-28 1986-03-22 Sumitomo Metal Ind Ltd Line of continuous hot rolling mill equipment
JPS6250008A (en) * 1985-08-30 1987-03-04 Mitsubishi Heavy Ind Ltd Rolling mill
EP0266564B1 (en) * 1986-11-06 1992-04-01 Sms Schloemann-Siemag Aktiengesellschaft Strip casting installation with a following multiple stand continuous rolling mill
JPS63177904A (en) * 1987-01-16 1988-07-22 Sumitomo Metal Ind Ltd Continuous hot finish rolling equipment
EP0311126A2 (en) * 1987-10-09 1989-04-12 Hitachi, Ltd. Control method for plate material hot rolling equipment

Cited By (15)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP0553480B1 (en) * 1991-12-27 1996-03-13 Hitachi, Ltd. Rolling mill, rolling method and rolling mill system
EP0553480A2 (en) * 1991-12-27 1993-08-04 Hitachi, Ltd. Rolling mill, rolling method and rolling mill system
US5810069A (en) * 1993-02-16 1998-09-22 Voest-Alpine Industrieanlagen Gmbh Process for the production of a strip, a pre-strip or a slab
DE4322924C1 (en) * 1993-07-05 1994-10-27 Mannesmann Ag Method and apparatus for the production of hot-rolled carbon-containing steel strip
EP0633074A1 (en) * 1993-07-05 1995-01-11 MANNESMANN Aktiengesellschaft Method and production of hot-rolled band steel containing carbon
EP0666122A1 (en) * 1994-01-27 1995-08-09 Sms Schloemann-Siemag Aktiengesellschaft Method and installation for manufacturing hot-rolled steel strip from a continuously cast material
US5611232A (en) * 1994-01-27 1997-03-18 Sms Schloemann-Siemag Aktiengesellschaft Method and arrangement for manufacturing hot rolled steel strip from continuously cast input stock
DE4402402B4 (en) * 1994-01-27 2004-05-13 Sms Demag Ag Process for producing hot-rolled steel strip from continuously cast starting material and plant for carrying out the process
WO1997027012A1 (en) * 1996-01-23 1997-07-31 Siemens Aktiengesellschaft System and method for rolling slabs
US5806357A (en) * 1996-01-23 1998-09-15 Siemens Aktiengesellschaft System and method for rolling tapered slabs
CN1103647C (en) * 1996-03-28 2003-03-26 曼内斯曼股份公司 Method and arrangement for producing hot-rolled strip
WO1997036699A1 (en) * 1996-03-28 1997-10-09 Mannesmann Ag Method and arrangement for producing hot-rolled steel strip
GB2322320A (en) * 1997-02-21 1998-08-26 Kvaerner Metals Cont Casting Continuous casting with rolling stages separated by a temperature controlling stage
DE102011006357A1 (en) 2010-10-08 2012-04-12 Sms Siemag Ag Rolling mill for producing a metal strip and method for producing a rolling mill
WO2012045585A2 (en) 2010-10-08 2012-04-12 Sms Siemag Ag Rolling train for producing a metal strip and method for producing a rolling train

Also Published As

Publication number Publication date
DE3839151A1 (en) 1990-05-23
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