EP1850978B1 - Milling device for inline-rolling a steel band produced especially by means of a twin-roll continuous casting process - Google Patents

Milling device for inline-rolling a steel band produced especially by means of a twin-roll continuous casting process Download PDF

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Publication number
EP1850978B1
EP1850978B1 EP06723098A EP06723098A EP1850978B1 EP 1850978 B1 EP1850978 B1 EP 1850978B1 EP 06723098 A EP06723098 A EP 06723098A EP 06723098 A EP06723098 A EP 06723098A EP 1850978 B1 EP1850978 B1 EP 1850978B1
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EP
European Patent Office
Prior art keywords
rolling
steel band
working
rolling device
rolls
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Not-in-force
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EP06723098A
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German (de)
French (fr)
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EP1850978A1 (en
Inventor
Heinrich Marti
John Turley
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Main Management Inspiration AG
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Main Management Inspiration AG
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    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B21—MECHANICAL METAL-WORKING WITHOUT ESSENTIALLY REMOVING MATERIAL; PUNCHING METAL
    • B21B—ROLLING OF METAL
    • B21B13/00—Metal-rolling stands, i.e. an assembly composed of a stand frame, rolls, and accessories
    • B21B13/22—Metal-rolling stands, i.e. an assembly composed of a stand frame, rolls, and accessories for rolling metal immediately subsequent to continuous casting, i.e. in-line rolling of steel
    • 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
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B21—MECHANICAL METAL-WORKING WITHOUT ESSENTIALLY REMOVING MATERIAL; PUNCHING METAL
    • B21B—ROLLING OF METAL
    • B21B13/00—Metal-rolling stands, i.e. an assembly composed of a stand frame, rolls, and accessories
    • B21B13/14—Metal-rolling stands, i.e. an assembly composed of a stand frame, rolls, and accessories having counter-pressure devices acting on rolls to inhibit deflection of same under load; Back-up rolls
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B21—MECHANICAL METAL-WORKING WITHOUT ESSENTIALLY REMOVING MATERIAL; PUNCHING METAL
    • B21B—ROLLING OF METAL
    • B21B13/00—Metal-rolling stands, i.e. an assembly composed of a stand frame, rolls, and accessories
    • B21B2013/003—Inactive rolling stands
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B21—MECHANICAL METAL-WORKING WITHOUT ESSENTIALLY REMOVING MATERIAL; PUNCHING METAL
    • B21B—ROLLING OF METAL
    • B21B13/00—Metal-rolling stands, i.e. an assembly composed of a stand frame, rolls, and accessories
    • B21B13/02—Metal-rolling stands, i.e. an assembly composed of a stand frame, rolls, and accessories with axes of rolls arranged horizontally
    • B21B2013/021—Twin mills
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B21—MECHANICAL METAL-WORKING WITHOUT ESSENTIALLY REMOVING MATERIAL; PUNCHING METAL
    • B21B—ROLLING OF METAL
    • B21B13/00—Metal-rolling stands, i.e. an assembly composed of a stand frame, rolls, and accessories
    • B21B13/02—Metal-rolling stands, i.e. an assembly composed of a stand frame, rolls, and accessories with axes of rolls arranged horizontally
    • B21B2013/025—Quarto, four-high stands
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B21—MECHANICAL METAL-WORKING WITHOUT ESSENTIALLY REMOVING MATERIAL; PUNCHING METAL
    • B21B—ROLLING OF METAL
    • B21B2265/00—Forming parameters
    • B21B2265/12—Rolling load or rolling pressure; roll force
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B21—MECHANICAL METAL-WORKING WITHOUT ESSENTIALLY REMOVING MATERIAL; PUNCHING METAL
    • B21B—ROLLING OF METAL
    • B21B2269/00—Roll bending or shifting
    • B21B2269/12—Axial shifting the rolls
    • B21B2269/14—Work rolls
    • 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
    • B21B31/00—Rolling stand structures; Mounting, adjusting, or interchanging rolls, roll mountings, or stand frames
    • B21B31/08—Interchanging rolls, roll mountings, or stand frames, e.g. using C-hooks; Replacing roll chocks on roll shafts
    • B21B31/10—Interchanging rolls, roll mountings, or stand frames, e.g. using C-hooks; Replacing roll chocks on roll shafts by horizontally displacing, i.e. horizontal roll changing
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B21—MECHANICAL METAL-WORKING WITHOUT ESSENTIALLY REMOVING MATERIAL; PUNCHING METAL
    • B21B—ROLLING OF METAL
    • B21B37/00—Control devices or methods specially adapted for metal-rolling mills or the work produced thereby
    • B21B37/48—Tension control; Compression control
    • B21B37/52—Tension control; Compression control by drive motor control
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B21—MECHANICAL METAL-WORKING WITHOUT ESSENTIALLY REMOVING MATERIAL; PUNCHING METAL
    • B21B—ROLLING OF METAL
    • B21B39/00—Arrangements for moving, supporting, or positioning work, or controlling its movement, combined with or arranged in, or specially adapted for use in connection with, metal-rolling mills
    • B21B39/14—Guiding, positioning or aligning work
    • B21B39/16—Guiding, positioning or aligning work immediately before entering or after leaving the pass
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B21—MECHANICAL METAL-WORKING WITHOUT ESSENTIALLY REMOVING MATERIAL; PUNCHING METAL
    • B21B—ROLLING OF METAL
    • B21B45/00—Devices for surface or other treatment of work, specially combined with or arranged in, or specially adapted for use in connection with, metal-rolling mills
    • B21B45/02—Devices for surface or other treatment of work, specially combined with or arranged in, or specially adapted for use in connection with, metal-rolling mills for lubricating, cooling, or cleaning
    • B21B45/0203—Cooling
    • B21B45/0209—Cooling devices, e.g. using gaseous coolants
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B21—MECHANICAL METAL-WORKING WITHOUT ESSENTIALLY REMOVING MATERIAL; PUNCHING METAL
    • B21B—ROLLING OF METAL
    • B21B9/00—Measures for carrying out rolling operations under special conditions, e.g. in vacuum or inert atmosphere to prevent oxidation of work; Special measures for removing fumes from rolling mills
    • Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y10—TECHNICAL SUBJECTS COVERED BY FORMER USPC
    • Y10T—TECHNICAL SUBJECTS COVERED BY FORMER US CLASSIFICATION
    • Y10T29/00—Metal working
    • Y10T29/49—Method of mechanical manufacture
    • Y10T29/4998—Combined manufacture including applying or shaping of fluent material
    • Y10T29/49988—Metal casting
    • Y10T29/49991—Combined with rolling

Definitions

  • the invention relates to a rolling device for an in-line rolling of a steel strip, in particular produced by a two-roll strip casting, according to the preamble of claim 1.
  • This in-line rolling process can be applied by strip casting, in which the cast strips can be rolled immediately after casting in the hot state at temperatures of about 900 ° -1200 ° C, which is a very efficient process.
  • a generic rolling device for inline rolling with at least two roller units, each associated with one located above and below the steel strip working roll and one rotatably connected to this work role supporting role, each with the working and support rollers with their axes of rotation on a perpendicular to the expansion of the steel strip extending plane is, for example, in JP-A 09001209 disclosed.
  • the in-line rolling speeds of the cast strip are many times smaller, and only about 0.5 to 2.0 m / s instead of about 20 m / s.
  • the rolling forces are very high, so that the rolling devices must be designed accordingly stable.
  • the invention has the object of providing a rolling device, which is designed by a simple and inexpensive construction and by means of which the cast steel strip is rolled at the optimum time.
  • the invention further provides to replace the work rolls without having to interrupt the rolling, i. that they can be changed almost on the fly.
  • Fig. 1 and Fig. 2 show a rolling device 10 for an in-line rolling of a particular produced by a two-roll strip casting steel strip 11, as well as from Fig. 3 can be removed.
  • This rolling device 10 is arranged at such a distance from the steel strip 11 generating casting rollers 41, 42, that the steel strip 11 has cooled sufficiently. It would also be possible to additionally cool the steel strip 11 by cooling panels not shown in detail before entering the rolling device 10. These cooling panels would be controllable so that with him the inlet temperature of the steel strip could be set to a selectable, as constant as possible over the width temperature.
  • roller units 20 and 30 there are two roller units 20 and 30 are provided, each having a work roll located above and below the steel strip 11 21, 31 and one each with this work roll 21, 31 rotatably connected support roller 22, 32 have.
  • These working 21, 31 and support rollers 22, 32 are located with their axes of rotation advantageously on a plane perpendicular to the extension of the steel strip 11 extending plane 20 ', 30'.
  • the work rolls 21, 31 are coupled with indicated drive shafts 21 ', 31' of a drive member. In principle, the support rollers or both, the working and the support rollers could be driven.
  • the two roller units 20, 30 are arranged directly successively in a frame construction 15. This results in the advantage that, on the one hand, the steel strip 11 cools only insignificantly from one to the next work rolls 21, 31. In addition, with this arrangement of the rolling device in comparison to conventional rolling mills also requires very little space and thus there are substantial cost savings.
  • the frame structure 15 is formed of four spaced-apart vertical columns 16, 17, 18 and these connecting transverse webs 14, 19. But it could also be designed as a housing or a housing-like frame, while the roles would be surrounded by him. This would be particularly useful if the steel strip were held in an inertization chamber provided within the frame housing.
  • a respective support roller 22, 32 is rotatably mounted on both sides in a respective bearing housing 23, 24, 33, 34 together with the rotatably connected to her work roll 21, 31.
  • two bearing housings 23, 33 are provided at the top and at the bottom, which are driven by a drive column 37 having a drive fastened to the upper transverse web 14 of the frame structure 15 36, for example, an electromechanical or a hydraulically acting spindle drive, in this perpendicular to the extension of the steel strip 11 extending plane 20 ', 30' are height adjustable.
  • the lower rollers 21, 22, 31, 32 rotatably mounted on both sides in a respective bearing housing 33, 34, said bearing housing 33, 34 are in turn coupled to a drive column 37 of a fixed to the transverse web 19 of the frame structure 15 drive 39.
  • the upper and lower bearing housings 23, 24, 33, 34 are on the inside directly to each other and on the outside of each column 17, 18 out. Between these bearing housings 23, 33 and 24, 34 are advantageously not shown measuring cells available, which measures and evaluates a force acting in the direction of the steel strip 11 horizontal force between these bearing housings, such that when exceeding a predetermined horizontal force, the rotational speeds of the work rolls 21, 31 from one to the other roller unit 20, 30 are adapted to reduce this horizontal force to zero or a predetermined horizontal force.
  • roller units 20, 30 additionally upstream Einlaufrollencover 12, 13 is provided, which also in the frame construction 15 is stored.
  • This inlet roller pair 12, 13 serves for a perfect guiding of the steel strip 11, in particular even when changing the work rolls.
  • the work rolls 21, 31 may be slidably disposed in the direction of the invention in order to achieve a uniform wear in its axial direction, which is not shown in detail.
  • both work rolls 21, 31 are arranged displaceably in the same direction.
  • Fig. 3 shows a schematic representation of the rotatable during casting casting rollers 41, 42, the existing between these existing molten bath 44 and the steel strip 11, which a loop diverted from a vertical to a horizontal position and by guide rollers 12 ', 13', the inlet rollers 12, 13 and is passed through the work rolls 21, 31.
  • the speed of the first reaching the steel strip 11 driven working rollers 21 of the roller unit 20 is brought in response to the rotational speed of the casting rollers 41, 42, while the rotational speed of the subsequent driven work rolls 31 in dependence on the speed of the upstream work rolls 21 takes place.
  • a coordinated control of the speeds and thus a rolling of the steel strip 11 can be achieved without the steel strip 11 between the pairs of work rolls 21, 31 spans or becomes too loose.
  • the invention does not exclude that two or more such rolling devices arranged one behind the other can also be placed.
  • the arrangement of the working and supporting rollers of a roller unit may be selected from a so-called 4-Hi (as shown), a 6-Hi or a Z-Hi.

Abstract

Disclosed is a milling device for inline-rolling a steel band which is produced especially by means of a twin-roll continuous casting process. Said milling device comprises at least two rolling units (20, 30) with working rolls (21, 31) that mill the steel band (11) and support rolls (22, 32) which support said working rolls. The working rolls and support rolls are rotatably mounted in bearing housings (23, 24, 33, 34). At least two rolling units (20, 30) are disposed successively in a monolithic or multipiece frame structure (15) such that the rolling temperatures between the rolling units differ only slightly while a simple and inexpensive design is created.

Description

Die Erfindung betrifft eine Walzeinrichtung für ein Inline-Walzen eines insbesondere durch ein Zweirollen-Bandgiessen hergestelltes Stahlband, gemäss dem Oberbegriff des Anspruches 1. The invention relates to a rolling device for an in-line rolling of a steel strip, in particular produced by a two-roll strip casting, according to the preamble of claim 1.

Mit dem bekannten Bandgiessen, insbesondere dem Zweirollen-Bandgiessen oder Giessen auf Band, können im Vergleich zum herkömmlichen Dünnbrammengiessen einfach dünnere Bänder im Bereich von 0.5 bis einige Millimeter Dicke gegossen werden. Damit ist es nicht mehr erforderlich, die gegossen Bänder um ein Vielfaches mittels Warmwalzwerken oder separater Kaltwalzwerken herunterzuwalzen, wie beispielsweise bei Blechen, die auf einige Zehntel-Millimeter Dicke herzustellen sind.With the known strip casting, in particular two-roll strip casting or casting on strip, thinner strips in the range of 0.5 to a few millimeters in thickness can be cast in comparison to conventional thin slab casting. Thus, it is no longer necessary to downsize the cast strip by a multiple by means of hot rolling mills or separate cold rolling mills, such as in sheet metal, which are to produce a few tenths of a millimeter thick.

Durch Bandgiessen kann dieses Inline-Walzverfahren angewendet werden, bei dem die gegossen Bänder unmittelbar nach dem Giessen noch im heissem Zustand bei Temperaturen von ca. 900°-1200° C gewalzt werden können, was ein sehr rationelles Verfahren darstellt.This in-line rolling process can be applied by strip casting, in which the cast strips can be rolled immediately after casting in the hot state at temperatures of about 900 ° -1200 ° C, which is a very efficient process.

Eine gattungsbildende Walzeinrichtung für ein Inline-Walzen mit mindestens zwei Walzeinheiten, denen jeweils eine ober- und unterhalb des Stahlbandes befindliche Arbeitsrolle und je eine mit dieser Arbeitsrolle drehverbundene Stützrolle zugeordnet ist, wobei sich jeweils die Arbeits- und Stützrollen mit ihren Drehachsen auf einer senkrecht zu der Ausdehnung des Stahlbandes verlaufenden Ebene befinden, ist beispielsweise in JP-A 09001209 offenbart.A generic rolling device for inline rolling with at least two roller units, each associated with one located above and below the steel strip working roll and one rotatably connected to this work role supporting role, each with the working and support rollers with their axes of rotation on a perpendicular to the expansion of the steel strip extending plane is, for example, in JP-A 09001209 disclosed.

Bisherige Warmwalzgerüste sind sehr sperrig gebaut, und demzufolge ergeben sich zwischen den einzelnen Einheiten relativ grosse Abstände bis zu mehreren Metern. Hieraus ergab sich die Schwierigkeit, dass zwischen den Einheiten zu hohe Temperaturverluste aufgetreten sind.Previous hot rolling stands are built very bulky, and therefore arise between the units relatively large distances up to several meters. This resulted in the difficulty that too high temperature losses occurred between the units.

Im Vergleich zu herkömmlichen Walzwerken sind die Bandgeschwindigkeiten beim Inline-Walzen vom gegossenen Band um ein Mehrfaches kleiner, statt ca. 20 m/s nur etwa ca. 0.5 bis 2.0 m/s. Wie bei den herkömmlichen Walzgerüsten sind die Walzkräfte sehr hoch, so dass die Walzeinrichtungen entsprechend stabil ausgelegt werden müssen.In comparison to conventional rolling mills, the in-line rolling speeds of the cast strip are many times smaller, and only about 0.5 to 2.0 m / s instead of about 20 m / s. As in the conventional rolling stands, the rolling forces are very high, so that the rolling devices must be designed accordingly stable.

Aufgrund dessen wurde der Erfindung die Aufgabe zugrundegelegt, eine Walzeinrichtung zu schaffen, welche durch eine einfache und kostengünstige Konstruktion ausgelegt ist und mittels welcher das gegossene Stahlband im optimalen Zeitpunkt gewalzt wird.Because of this, the invention has the object of providing a rolling device, which is designed by a simple and inexpensive construction and by means of which the cast steel strip is rolled at the optimum time.

Diese Aufgabe ist erfindungsgemäss durch eine Walzeinrichtung mit den Merkmalen des Anspruches 1 gelöst.This object is achieved by a rolling device with the features of claim 1.

Mit dieser erfindungsgemässen Ausbildung einer Walzeinrichtung ist gewährleistet, dass die Walztemperaturen zwischen den Walzeinheiten nur unwesentlich differieren und damit das Stahlband für das Walzen nicht aufgewärmt zu werden braucht, und dass die Arbeitsrollen auch bei hoher Belastung dauerhaft ein gleichmässiges Herunterwalzen innerhalb der erforderlichen Toleranzen ermöglichen. Dies ist im Sinne der Erfindung durch eine einfache und kostengünstige Konstruktion gelöst.With this inventive design of a rolling device ensures that the rolling temperatures differ only slightly between the rolling units and thus the steel strip for rolling does not need to be warmed up, and that the work rolls permanently allow even under heavy load evenly down rolling within the required tolerances. This is achieved in the context of the invention by a simple and inexpensive construction.

Die Erfindung sieht ferner vor, die Arbeitsrollen auswechseln, ohne dass das Walzen unterbrochen werden muss, d.h. dass sie quasi fliegend gewechselt werden können.The invention further provides to replace the work rolls without having to interrupt the rolling, i. that they can be changed almost on the fly.

Ein Ausführungsbeispiel der Erfindung sowie weitere Vorteile derselben sind nachfolgend anhand der Zeichnung näher erläutert. Es zeigen:

Fig. 1
eine erfindungsgemässe Walzeinrichtung in schematischer Seitenansicht dargestellt,
Fig. 2
eine Frontansicht der Walzeinrichtung nach Fig. 1, und
Fig. 3
eine schematische Darstellung einer Giessanlage mit der Walzeinrichtung.
An embodiment of the invention and further advantages thereof are explained in more detail with reference to the drawing. Show it:
Fig. 1
an inventive rolling device shown in a schematic side view,
Fig. 2
a front view of the rolling device after Fig. 1 , and
Fig. 3
a schematic representation of a casting plant with the rolling device.

Fig. 1 und Fig. 2 zeigen eine Walzeinrichtung 10 für ein Inline-Walzen eines insbesondere durch ein Zweirollen-Bandgiessen hergestelltes Stahlband 11, wie dies auch aus der Fig. 3 entnommen werden kann. Diese Walzeinrichtung 10 ist in einem solchen Abstand zu den das Stahlband 11 erzeugenden Giessrollen 41, 42 angeordnet, dass das Stahlband 11 ausreichend abgekühlt ist. Es wäre auch möglich, das Stahlband 11 durch nicht näher gezeigte Kühlpanels vor Eintritt in die Walzeinrichtung 10 zusätzlich zu kühlen. Diese Kühlpanels würden derart ansteuerbar sein, dass mit ihm die Einlauftemperatur des Stahlbandes auf eine wählbare, über die Breite möglichst konstante Temperatur eingestellt werden könnte. Fig. 1 and Fig. 2 show a rolling device 10 for an in-line rolling of a particular produced by a two-roll strip casting steel strip 11, as well as from Fig. 3 can be removed. This rolling device 10 is arranged at such a distance from the steel strip 11 generating casting rollers 41, 42, that the steel strip 11 has cooled sufficiently. It would also be possible to additionally cool the steel strip 11 by cooling panels not shown in detail before entering the rolling device 10. These cooling panels would be controllable so that with him the inlet temperature of the steel strip could be set to a selectable, as constant as possible over the width temperature.

Es sind zwei Walzeinheiten 20 und 30 vorgesehen, die jeweils eine ober- und unterhalb des Stahlbandes 11 befindliche Arbeitsrolle 21, 31 und je eine mit dieser Arbeitsrolle 21, 31 drehverbundene Stützrolle 22, 32 aufweisen. Diese Arbeits- 21, 31 und Stützrollen 22, 32 befinden sich mit ihren Drehachsen vorteilhaft auf einer senkrecht zur Ausdehnung des Stahlbandes 11 verlaufenden Ebene 20', 30'. Die Arbeitsrollen 21, 31 sind mit angedeuteten Antriebswellen 21', 31' eines Antriebsorgans koppelbar. Im Prinzip könnten auch die Stützrollen oder beide, die Arbeits- und die Stützrollen angetrieben sein.There are two roller units 20 and 30 are provided, each having a work roll located above and below the steel strip 11 21, 31 and one each with this work roll 21, 31 rotatably connected support roller 22, 32 have. These working 21, 31 and support rollers 22, 32 are located with their axes of rotation advantageously on a plane perpendicular to the extension of the steel strip 11 extending plane 20 ', 30'. The work rolls 21, 31 are coupled with indicated drive shafts 21 ', 31' of a drive member. In principle, the support rollers or both, the working and the support rollers could be driven.

Erfindungsgemäss sind die beiden Walzeinheiten 20, 30 unmittelbar aufeinanderfolgend in einer Rahmenkonstruktion 15 angeordnet. Dies ergibt den Vorteil, dass zum einen das Stahlband 11 von den einen zu den nächsten Arbeitsrollen 21, 31 nur unwesentlich abkühlt. Ausserdem wird mit dieser Anordnung der Walzeinrichtung im Vergleich zu herkömmlichen Walzwerken auch sehr wenig Platz benötigt und damit ergeben sich substantielle Kosteneinsparungen.According to the invention, the two roller units 20, 30 are arranged directly successively in a frame construction 15. This results in the advantage that, on the one hand, the steel strip 11 cools only insignificantly from one to the next work rolls 21, 31. In addition, with this arrangement of the rolling device in comparison to conventional rolling mills also requires very little space and thus there are substantial cost savings.

Die Rahmenkonstruktion 15 ist aus vier im Abstand zueinander angeordneten vertikalen Säulen 16, 17, 18 und diese verbindende Querstege 14, 19 gebildet. Sie könnte aber auch als ein Gehäuse oder ein gehäuseähnlicher Rahmen ausgebildet sein, dabei die Rollen von ihm umgeben wären. Dies würde sich insbesondere dann eignen, wenn das Stahlband in einer innerhalb des Rahmengehäuses vorgesehenen Inertisierungskammer gehalten würde.The frame structure 15 is formed of four spaced-apart vertical columns 16, 17, 18 and these connecting transverse webs 14, 19. But it could also be designed as a housing or a housing-like frame, while the roles would be surrounded by him. This would be particularly useful if the steel strip were held in an inertization chamber provided within the frame housing.

Eine jeweilige Stützrolle 22, 32 ist zusammen mit der mit ihr drehverbundenen Arbeitsrolle 21, 31 zu beiden Seiten in je einem Lagergehäuse 23, 24, 33, 34 drehgelagert. Es sind hierbei oben und unten je zwei Lagergehäuse 23, 33 vorgesehen, die durch eine Antriebssäule 37 mit einem am oberen Quersteg 14 der Rahmenkonstruktion 15 befestigten Antrieb 36, zum Beispiel einem elektromechanisch oder einem hydraulisch wirkenden Spindelantrieb, in dieser senkrecht zur Ausdehnung des Stahlbandes 11 verlaufenden Ebene 20', 30' höhenverstellbar sind. Desgleichen sind die unteren Rollen 21, 22, 31, 32 zu beiden Seiten in je einem Lagergehäuse 33, 34 drehgelagert, wobei diese Lagergehäuse 33, 34 wiederum an eine Antriebssäule 37 eines am Quersteg 19 der Rahmenkonstruktion 15 befestigten Antriebs 39 gekoppelt sind.A respective support roller 22, 32 is rotatably mounted on both sides in a respective bearing housing 23, 24, 33, 34 together with the rotatably connected to her work roll 21, 31. In this case, two bearing housings 23, 33 are provided at the top and at the bottom, which are driven by a drive column 37 having a drive fastened to the upper transverse web 14 of the frame structure 15 36, for example, an electromechanical or a hydraulically acting spindle drive, in this perpendicular to the extension of the steel strip 11 extending plane 20 ', 30' are height adjustable. Similarly, the lower rollers 21, 22, 31, 32 rotatably mounted on both sides in a respective bearing housing 33, 34, said bearing housing 33, 34 are in turn coupled to a drive column 37 of a fixed to the transverse web 19 of the frame structure 15 drive 39.

Die oberen bzw. unteren Lagergehäuse 23, 24, 33, 34 sind innenseitig unmittelbar aneinander und aussenseitig an je einer Säule 17, 18 geführt. Zwischen diesen Lagergehäusen 23, 33 bzw. 24, 34 sind mit Vorteil nicht näher gezeigte Messzellen vorhanden, die eine in Richtung des Stahlbandes 11 wirkende Horizontalkraft zwischen diesen Lagergehäusen misst und auswertet, derart, dass bei Überschreitung einer vorgegebenen Horizontalkraft die Drehzahlen der Arbeitsrollen 21, 31 von der einen zu der anderen Walzeinheit 20, 30 angepasst werden, um diese Horizontalkraft auf Null oder eine vorgegebene Horizontalkraft zu reduzieren.The upper and lower bearing housings 23, 24, 33, 34 are on the inside directly to each other and on the outside of each column 17, 18 out. Between these bearing housings 23, 33 and 24, 34 are advantageously not shown measuring cells available, which measures and evaluates a force acting in the direction of the steel strip 11 horizontal force between these bearing housings, such that when exceeding a predetermined horizontal force, the rotational speeds of the work rolls 21, 31 from one to the other roller unit 20, 30 are adapted to reduce this horizontal force to zero or a predetermined horizontal force.

Durch die mittels der Antriebe 36, 39 anhebbaren bzw. absenkbaren Ausführung der oberen bzw. der unteren Arbeitsrollen 22, 32 bzw. 21, 31 sind letztere während des Giessens, d.h. ohne Giessunterbruch austauschbar. Dies kann derart geschehen, dass zuerst die der vorderen Walzeinheit 20 und anschliessend die der hinteren Walzeinheit 30 ausgewechselt werden, wobei dann mit Vorteil während des Austausches eines Arbeitsrollenpaares 21, 31 das andere Rollenpaar 31, 21 das Giessband 11 um den gesamten Betrag, wie wenn beide Rollenpaare walzen, verkleinert.By the means of the drives 36, 39 can be raised or lowered embodiment of the upper and the lower work rolls 22, 32 and 21, 31, the latter during the casting, i. exchangeable without interruption of pouring. This can be done in such a way that first of the front roller unit 20 and then the rear roller unit 30 are replaced, which then advantageously during the replacement of a pair of work rollers 21, 31, the other pair of rollers 31, 21, the casting belt 11 by the entire amount, as if both pairs of rollers roll, reduced in size.

Ferner ist ein den Walzeinheiten 20, 30 zusätzlich vorgeschaltetes Einlaufrollenpaar 12, 13 vorgesehen, welches ebenfalls in der Rahmenkonstruktion 15 gelagert ist. Dieses Einlaufrollenpaar 12, 13 dient für ein einwandfreies Führen des Stahlbandes 11, insbesondere auch bei einem Wechsel der Arbeitsrollen.Further, a roller units 20, 30 additionally upstream Einlaufrollenpaar 12, 13 is provided, which also in the frame construction 15 is stored. This inlet roller pair 12, 13 serves for a perfect guiding of the steel strip 11, in particular even when changing the work rolls.

Die Arbeitsrollen 21, 31 können im Rahmen der Erfindung zwecks Erzielung einer gleichmässigen Abnutzung in ihrer Achsrichtung verschiebbar angeordnet sein, was nicht näher dargestellt ist. Vorzugsweise sind beide Arbeitsrollen 21, 31 in dieselbe Richtung verschiebbar angeordnet.The work rolls 21, 31 may be slidably disposed in the direction of the invention in order to achieve a uniform wear in its axial direction, which is not shown in detail. Preferably, both work rolls 21, 31 are arranged displaceably in the same direction.

Fig. 3 zeigt in schematischer Darstellung die beim Giessen drehbaren Giessrollen 41, 42, das zwischen diesen vorhandene Schmelzbad 44 und das erzeugte Stahlband 11, welches eine Schlaufe bildend aus einer vertikalen in eine horizontale Lage umgeleitet und durch Führungsrollen 12', 13', die Einlaufrollen 12, 13 und durch die Arbeitsrollen 21, 31 geleitet wird. Die Drehzahl der als erstes mit dem Stahlband 11 in Berührung gelangenden angetriebenen Arbeitsrollen 21 der Walzeinheit 20 wird in Abhängigkeit der Drehzahl der Giessrollen 41, 42 gebracht, indessen die Drehzahl der nachfolgenden angetriebenen Arbeitsrollen 31 in Abhängigkeit der Drehzahl der vorgeschalteten Arbeitsrollen 21 erfolgt. Somit kann eine abgestimmte Steuerung der Drehzahlen und damit ein Walzen des Stahlbandes 11 erzielt werden, ohne dass das Stahlband 11 zwischen der Arbeitsrollenpaare 21, 31 überspannt oder zu lose wird. Fig. 3 shows a schematic representation of the rotatable during casting casting rollers 41, 42, the existing between these existing molten bath 44 and the steel strip 11, which a loop diverted from a vertical to a horizontal position and by guide rollers 12 ', 13', the inlet rollers 12, 13 and is passed through the work rolls 21, 31. The speed of the first reaching the steel strip 11 driven working rollers 21 of the roller unit 20 is brought in response to the rotational speed of the casting rollers 41, 42, while the rotational speed of the subsequent driven work rolls 31 in dependence on the speed of the upstream work rolls 21 takes place. Thus, a coordinated control of the speeds and thus a rolling of the steel strip 11 can be achieved without the steel strip 11 between the pairs of work rolls 21, 31 spans or becomes too loose.

Die Erfindung ist mit dem obigen Ausführungsbeispiel ausreichend dargetan. Grundsätzlich könnte anstelle einer Rahmenkonstruktion wie gezeigt auch ein Gehäuserahmen oder ein gehäuseähnlicher Rahmen verwendet werden.The invention is sufficiently demonstrated with the above embodiment. In principle, instead of a frame construction as shown, a housing frame or a housing-like frame could be used.

Es könnten auch mehr als zwei Walzeinheiten nebeneinander in einer Rahmenkonstruktion angeordnet sein. Zwischen den Lagergehäusen könnten im Prinzip auch zu der Rahmenkonstruktion gehörende Führungsschienen vorgesehen sein.There could also be more than two rolling units arranged side by side in a frame construction. In principle, guide rails belonging to the frame construction could also be provided between the bearing housings.

Die Erfindung schliesst ferner nicht aus, dass auch zwei bzw. mehrere solcher hintereinander angeordneter Walzeinrichtungen platziert sein können.Furthermore, the invention does not exclude that two or more such rolling devices arranged one behind the other can also be placed.

Die Anordnung der Arbeits- und Stützrollen einer Walzeinheit kann aus einem sogenannten 4-Hi (wie dargestellt), einem 6-Hi oder einem Z-Hi gewählt sein.The arrangement of the working and supporting rollers of a roller unit may be selected from a so-called 4-Hi (as shown), a 6-Hi or a Z-Hi.

Claims (11)

  1. Rolling device for inline-rolling a steel band produced especially by means of a twin-roll continuous casting process, which has at least two rolling units (20, 30) with working rolls (21, 31) to mill the steel band (11) and support rolls (22, 32) supporting the working rolls and rotatably mounted in bearing housings (23, 24, 33, 34), whereas a respective rolling unit (20, 30) is assigned a working roll (21, 31) located above and below the steel band (11) and a support roll (22, 32) rotatably connected with this working roll, while the respective working and support rolls are located with their axes of rotation in a plane (20', 30') running perpendicular to the extension of the steel band (11), characterised in that
    that at least two rolling units (20, 30) are arranged directly in series in a frame construction (15) made of one or more parts, and a respective support roll (22, 32) is rotatably mounted together with the rotatably connected working roll (21, 31) on both sides in a respective bearing housing (23, 24, 33, 34), where the respective bearing housing (23, 24, 33, 34) is height-adjustable by a drive in the plane (20', 30') running perpendicular to the extension of the steel band (11).
  2. Rolling device according to claim 1,
    characterised in that
    the upper and lower bearing housings (23, 24, 33, 34) of the rolling units (20, 30) are guided against each other and there are gauge heads placed between them, which measure and analyse a horizontal force acting in the direction of the steel band between these bearing housings (23, 24, 33, 34), in such a way, that if a specified horizontal force is exceeded, the speeds of the working rolls (22, 32) are adjusted from one rolling unit (20, 30) to the next, in order to reduce this horizontal force to zero or a specified horizontal force.
  3. Rolling device according to claim 1 or 2, characterised in that
    the frame construction (15) consists of four pillars (16, 17, 18) arranged at a distance from each other and crosspieces (14, 19) connecting these, while the height of the bearing housings (23, 24, 33, 34) is controlled in pairs between two pillars (16, 17, 18).
  4. Rolling device according to one of the preceding claims 1 to 3,
    characterised in that
    in addition an inlet roll pair (12, 13) is provided in series with the rolling units (20, 30), which is preferably mounted in the frame construction (15).
  5. Rolling device according to one of the preceding claims 1 to 4,
    characterised in that
    the steel band (11) passing through the rolling units (20, 30) can be screened by an inerting protective gas.
  6. Rolling device according to one of the preceding claims 1 to 5,
    characterised in that
    at least one, but preferably several, cooling panels acting over the entire width of the steel band (11) are provided in front of the rolling units (20, 30), which can be controlled in such a way that the inlet temperature of the steel band (11) can be adjusted in the rolling units (20, 30).
  7. Rolling device according to one of the preceding claims 1 to 6,
    characterised in that
    the working rolls (21, 31) of one of the two rolling units (20, 30) can be changed during casting.
  8. Rolling device according to one of the preceding claims 1 to 7,
    characterised in that
    the working rolls (21, 31) are arranged displaceably in their axial direction in order to achieve consistent wear, both working rolls preferably being arranged so as to be displaceable in the same direction.
  9. Rolling device according to one of the preceding claims 1 to 8,
    characterised in that
    the frame construction (15) is designed as a housing or a housing-type frame.
  10. Rolling device according to one of the preceding claims 1 to 8,
    characterised in that
    the speed of the first working roll pair (21) to come into contact with the steel band (11) occurs as a function of the speed of the casting rolls and the speed of the following working roll pair (31) occurs as a function of the speed of the working roll pair (21) connected in series.
  11. Rolling device according to one of the preceding claims 1 to 10,
    characterised in that
    several such frame constructions (15) each with at least two rolling units (20, 30) are arranged in series.
EP06723098A 2005-02-23 2006-02-23 Milling device for inline-rolling a steel band produced especially by means of a twin-roll continuous casting process Not-in-force EP1850978B1 (en)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
CH00333/05A CH697624B1 (en) 2005-02-23 2005-02-23 Rolling device for an in-line rolling of a produced by strip casting, in particular twin-roll strip casting steel strip.
PCT/EP2006/001675 WO2006089755A1 (en) 2005-02-23 2006-02-23 Milling device for inline-rolling a steel band produced especially by means of a twin-roll continuous casting process

Publications (2)

Publication Number Publication Date
EP1850978A1 EP1850978A1 (en) 2007-11-07
EP1850978B1 true EP1850978B1 (en) 2012-04-11

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Application Number Title Priority Date Filing Date
EP06723098A Not-in-force EP1850978B1 (en) 2005-02-23 2006-02-23 Milling device for inline-rolling a steel band produced especially by means of a twin-roll continuous casting process

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US (1) US7984634B2 (en)
EP (1) EP1850978B1 (en)
JP (1) JP4823238B2 (en)
KR (1) KR101278764B1 (en)
CN (1) CN101128270B (en)
AT (1) ATE552926T1 (en)
CA (1) CA2598850C (en)
CH (1) CH697624B1 (en)
ES (1) ES2385253T3 (en)
WO (1) WO2006089755A1 (en)

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IT1399421B1 (en) * 2010-04-08 2013-04-16 Danieli Off Mecc SUPPORTING FRAME FOR ROLLERS OF A LAMINATION CAGE AND LAMINATION CAGE PROVIDED WITH THIS FRAME
CN102814328B (en) * 2012-05-04 2014-08-06 中国重型机械研究院有限公司 Four-roller and six-roller combined temper mill
CN102652958A (en) * 2012-05-04 2012-09-05 中国重型机械研究院有限公司 Dual six-roller flattening machine
KR101778023B1 (en) * 2016-05-31 2017-09-13 주식회사 포스코 Bloom withdrawal apparatus
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Publication number Publication date
KR20070106531A (en) 2007-11-01
CA2598850C (en) 2014-04-29
ES2385253T3 (en) 2012-07-20
JP4823238B2 (en) 2011-11-24
WO2006089755A1 (en) 2006-08-31
CH697624B1 (en) 2008-12-31
ATE552926T1 (en) 2012-04-15
CA2598850A1 (en) 2006-08-31
US20080276680A1 (en) 2008-11-13
EP1850978A1 (en) 2007-11-07
CN101128270A (en) 2008-02-20
US7984634B2 (en) 2011-07-26
CN101128270B (en) 2011-12-14
JP2008538535A (en) 2008-10-30
KR101278764B1 (en) 2013-06-25

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