EP1850978A1 - 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

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Publication number
EP1850978A1
EP1850978A1 EP06723098A EP06723098A EP1850978A1 EP 1850978 A1 EP1850978 A1 EP 1850978A1 EP 06723098 A EP06723098 A EP 06723098A EP 06723098 A EP06723098 A EP 06723098A EP 1850978 A1 EP1850978 A1 EP 1850978A1
Authority
EP
European Patent Office
Prior art keywords
rolling
steel strip
rolling device
units
roller
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.)
Granted
Application number
EP06723098A
Other languages
German (de)
French (fr)
Other versions
EP1850978B1 (en
Inventor
Heinrich Marti
John Turley
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Main Management Inspiration AG
Original Assignee
Main Management Inspiration AG
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Filing date
Publication date
Application filed by Main Management Inspiration AG filed Critical Main Management Inspiration AG
Publication of EP1850978A1 publication Critical patent/EP1850978A1/en
Application granted granted Critical
Publication of EP1850978B1 publication Critical patent/EP1850978B1/en
Not-in-force legal-status Critical Current
Anticipated expiration legal-status Critical

Links

Classifications

    • 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

  • Rolling device for in-line rolling of a steel strip produced in particular by two-roll strip casting
  • the invention relates to a rolling device for an in-line rolling of a particular produced by a two-roll strip casting steel strip, which 'has at least two rolling units with the steel strip rolling work rolls and these work rolls supporting support rollers which are rotatably supported by bearing housings.
  • 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.
  • 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.
  • This object is achieved according to the invention in that at least two rolling units are arranged directly one after the other in a single-part or multi-part frame construction.
  • 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. 2 is a front view of the rolling device of Fig. 1
  • Fig. 3 is a schematic representation of a casting plant with the rolling device.
  • FIG. 1 and 2 show a rolling device 10 for in-line rolling of a steel strip 11, in particular produced by two-roll strip casting, as can also be seen in FIG. 3.
  • 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.
  • 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.
  • 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 suitable if the steel strip were held in an inerting chamber provided inside 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 present, 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.
  • a pair of infeed rollers 12, 13, which are additionally connected upstream of the roller units 20, 30, is provided, which is likewise provided in the frame assembly. struct 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, which between these existing molten bath 44 and the produced steel strip 11, which deflects a loop from a vertical to a horizontal position and by guide rollers 12 ', 13', the Feeding rollers 12, 13 and through the work rollers 21, 31 is passed.
  • 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 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.

Landscapes

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

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

Walzeinrichtung für ein Inline-Walzen eines insbesondere durch ein Zweirollen-Bandgiessen hergestelltes Stahlband Rolling device for in-line rolling of a steel strip produced in particular by two-roll strip casting
Die Erfindung betrifft eine Walzeinrichtung für ein Inline-Walzen eines insbesondere durch ein Zweirollen-Bandgiessen hergestelltes Stahlband, welche' mindestens zwei Walzeinheiten mit das Stahlband walzenden Arbeitsrollen und diese Arbeitsrollen abstützende Stützrollen aufweist, welche von Lagergehäusen drehbar gehalten sind.The invention relates to a rolling device for an in-line rolling of a particular produced by a two-roll strip casting steel strip, which 'has at least two rolling units with the steel strip rolling work rolls and these work rolls supporting support rollers which are rotatably supported by bearing housings.
Mit dem bekannten Baπdgiessen, insbesondere dem Zweirollen- Bandgiessen oder Giessen auf Band, können im Vergleich zum her- kömmlichen Dünnbramnhengiessen 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 bit casting, in particular two-roll strip casting or casting on strip, in comparison with the conventional Conventional thin slab casting simply thinner tapes in the range of 0.5 to a few millimeters thickness are poured. 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.
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 dadurch gelöst, dass mindestens zwei Walzeinheiten unmittelbar aufeinanderfolgend in einer ein- oder mehrteiligen Rahmenkonstruktion angeordnet sind. 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.This object is achieved according to the invention in that at least two rolling units are arranged directly one after the other in a single-part or multi-part frame construction. 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:An embodiment of the invention and further advantages thereof are explained in more detail with reference to the drawing. Show it:
Fig. 1 eine erfindungsgemässe Walzeinrichtung in schematischer Seitenansicht dargestellt,1 shows a rolling device according to the invention in a schematic side view,
Fig. 2 eine Frontansicht der Walzeinrichtung nach Fig. 1 , und Fig. 3 eine schematische Darstellung einer Giessanlage mit der Walzeinrichtung.Fig. 2 is a front view of the rolling device of Fig. 1, and Fig. 3 is 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. 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 Arbeitsund die Stützrollen angetrieben sein.1 and 2 show a rolling device 10 for in-line rolling of a steel strip 11, in particular produced by two-roll strip casting, as can also be seen in FIG. 3. 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. 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 Inertisierungskam- mer 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 suitable if the steel strip were held in an inerting chamber provided inside 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.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.
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.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 present, 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 total 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 Rahmenkon- struktion 15 gelagert ist. Dieses Einlaufrollenpaar 12, 13 dient für ein einwandfreies Führen des Stahlbandes 11 , insbesondere auch bei einem Wechsel der Arbeitsrollen.Furthermore, a pair of infeed rollers 12, 13, which are additionally connected upstream of the roller units 20, 30, is provided, which is likewise provided in the frame assembly. struct 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, which between these existing molten bath 44 and the produced steel strip 11, which deflects a loop from a vertical to a horizontal position and by guide rollers 12 ', 13', the Feeding rollers 12, 13 and through the work rollers 21, 31 is passed. 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. Die Erfindung schliesst femer nicht aus, dass auch zwei bzw. mehrere solcher hintereinander angeordneter Walzeinrichtungen platziert sein können.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. The invention furthermore 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

Patentansprüche claims
1. Walzeinrichtung für ein Inline-Walzen eines insbesondere durch ein Zweirollen-Bandgiessen hergestelltes Stahlband, welche mindestens zwei Walzeinheiten (20, 30) mit das Stahlband (11) walzenden Arbeitsrollen (21 , 31) und diese Arbeitsrollen abstützende Stützrollen (22, 32) aufweist, welche in Lagergehäusen (23, 24, 33, 34) drehbar gehalten sind, dadurch gekennzeichnet, dass mindestens zwei Walzeinheiten (20, 30) unmittelbar aufeinanderfolgend in einer ein- oder mehrteiligen Rahmenkonstruktion (15) angeordnet sind. 1. rolling device for in-line rolling of a particular produced by a two-roll strip casting steel strip, which at least two rolling units (20, 30) with the steel strip (11) rolling work rolls (21, 31) and these work rolls supporting support rollers (22, 32) which are rotatably held in bearing housings (23, 24, 33, 34), characterized in that at least two rolling units (20, 30) are arranged directly one after the other in a single or multi-part frame construction (15).
2. Walzeinrichtung nach Anspruch 1 , dadurch gekennzeichnet, dass einer jeweiligen Walzeinheit (20, 30) eine ober- und unterhalb des Stahlbandes (11) befindliche Arbeitsrolle (21 , 31 ) und je eine mit dieser Arbeitsrolle drehverbundene Stützrolle (22, 32) zugeordnet ist, bei der jeweils die Arbeits- und Stützrollen mit ihren Drehachsen auf einer sich senkrecht zu der Ausdehnung des Stahlbandes (11 ) verlaufenden Ebene (20\ 30') befinden.2. Rolling device according to claim 1, characterized in that a respective roller unit (20, 30) located above and below the steel strip (11) working roller (21, 31) and associated with a rotatably connected to this work role support roller (22, 32) is, in each of the working and support rollers with their axes of rotation on a perpendicular to the extent of the steel strip (11) extending plane (20 \ 30 ') are located.
3. Walzeinrichtung nach Anspruch 2, dadurch gekennzeichnet, .dass eine jeweilige Stützrolle (22, 32) zusammen mit der drehverbundenen Arbeitsrolle (21 , 31) zu beiden Seiten in je einem Lagergehäuse (23, 24, 33, 34) drehgelagert ist, wobei das jeweilige Lagergehäuse (23, 24, 33, 34) durch einen Antrieb, zum Beispiel einen hydraulisch geregelten Spindelantrieb, in der senkrecht zur Ausdehnung des Stahlbandes (11) verlaufenden Ebene (20\ 30') höhenverstellbar ist.3. Rolling device according to claim 2, characterized in that a respective support roller (22, 32) together with the rotatably connected work roll (21, 31) on both sides in a respective bearing housing (23, 24, 33, 34) is rotatably mounted, wherein the respective bearing housing (23, 24, 33, 34) by a drive, for example a hydraulically controlled spindle drive, in the perpendicular to the extension of the steel strip (11) extending plane (20 \ 30 ') is height adjustable.
4. Walzeinrichtung nach Anspruch 3, dadurch gekennzeichnet, dass die oberen bzw. unteren Lagergehäuse (23, 24, 33, 34) der Walzeinheiten (20, 30) aneinander geführt sind und zwischen diesen Messzellen vorhanden sind, die ein in Richtung des Stahlbandes wirkenden Horizontalkraft zwischen diesen Lagergehäusen (23, 24, .33, 34) misst und auswertet, derart, dass bei Überschreitung einer vorgegebenen Horizontalkraft die Drehzahlen der Arbeitsrollen (22, 32) von der einen zu der anderen Walzeinheit (20, 30) angepasst wird, um diese Horizontalkraft auf Null oder eine vorgegebene Horizontalkraft zur reduzieren. 4. rolling device according to claim 3, characterized in that the upper or lower bearing housing (23, 24, 33, 34) of the rolling units (20, 30) are guided together and between these measuring cells are present, acting in the direction of the steel strip Horizontal force between these bearing housings (23, 24, 33, 34) measures and evaluates, such that when exceeding a predetermined horizontal force, the rotational speeds of the work rolls (22, 32) from one to the other roller unit (20, 30) is adjusted to reduce this horizontal force to zero or a given horizontal force.
5. Walzeinrichtung nach einem der vorhergehenden Ansprüche 3 oder 4, dadurch gekennzeichnet, dass die Rahmenkonstruktion (15) aus vier senkrecht im Abstand zueinander angeordneten Säulen (16, 17, 18) und diese verbindende Querstege (14, 19) gebildet ist, wobei die Lagergehäuse (23, 24, 33, 34) paarweise zwischen zwei Säulen (16, 17, 18) höhengeführt sind.5. Rolling device according to one of the preceding claims 3 or 4, characterized in that the frame construction (15) consists of four vertically spaced-apart columns (16, 17, 18) and these connecting transverse webs (14, 19) is formed, wherein the Bearing housings (23, 24, 33, 34) in pairs between two columns (16, 17, 18) are guided vertically.
6. Walzeinrichtung nach einem der vorhergehenden Ansprüche 1 bis6. rolling device according to one of the preceding claims 1 to
5, dadurch gekennzeichnet, dass zusätzlich ein den Walzeinheiten (20, 30) vorgeschaltetes Einlaufrollenpaar (12, 13) vorgesehen ist, welches vorzugsweise in der Rahmenkonstruktion (15) gelagert ist.5, characterized in that in addition one of the roller units (20, 30) upstream of the inlet roller pair (12, 13) is provided, which is preferably mounted in the frame structure (15).
7. Walzeinrichtung nach einem der vorhergehenden Ansprüche 1 bis7. rolling device according to one of the preceding claims 1 to
6, dadurch gekennzeichnet, dass das die Walzeinheiten (20, 30) durchlaufende Stahlband (1 1 ) durch ein intertisierendes Schutzgas abschirmbar ist.6, characterized in that the rolling units (20, 30) passing through the steel strip (1 1) can be shielded by an inertizing inert gas.
8. Walzeinrichtung nach einem der vorhergehenden Ansprüche 1 bis8. rolling device according to one of the preceding claims 1 to
7, dadurch gekennzeichnet, dass vor den Walzeinheiten (20, 30) mindestens ein, vorzugsweise mehrere über die Gesamtbreite des Stahlbandes (11) wirkende Kühlpanel vorgesehen sind, welche derart ansteuerbar sind, dass damit die Einlauftemperatur des Stahlbandes (1 1) in die Walzeinheiten (20, 30) einstellbar ist.7, characterized in that in front of the rolling units (20, 30) at least one, preferably a plurality over the entire width of the steel strip (11) acting cooling panel are provided, which are controllable such that thus the inlet temperature of the steel strip (1 1) in the rolling units (20, 30) is adjustable.
9. Walzeinrichtung nach einem der vorhergehenden Ansprüche 1 bis9. rolling device according to one of the preceding claims 1 to
8, dadurch gekennzeichnet, dass die Arbeitsrollen (21 , 31) einer der beiden Walzeinheiten (20, 30) während des Giessens austauschbar sind. 8, characterized in that the working rollers (21, 31) of one of the two rolling units (20, 30) are interchangeable during the casting.
10. Walzeinrichtung nach einem der vorhergehenden Ansprüche 1 bis10. Rolling device according to one of the preceding claims 1 to
9, dadurch gekennzeichnet, dass die Arbeitsrollen (21 , 31) in ihrer Achsrichtung verschiebbar angeordnet sind zwecks Erzielung einer gleichmässigen Abnutzung, wobei beide Arbeitsrollen vorzugsweise in dieselbe Richtung verschiebbar angeordnet sind.9, characterized in that the work rolls (21, 31) are slidably disposed in its axial direction in order to achieve a uniform wear, wherein both work rolls are preferably arranged displaceably in the same direction.
11. Walzeinrichtung nach einem der vorhergehenden Ansprüche 1 bis11. Rolling device according to one of the preceding claims 1 to
10, dadurch gekennzeichnet, dass die Rahmenkonstruktion (15) als ein Gehäuse oder ein gehäuseähnlicher Rahmen ausgebildet ist.10, characterized in that the frame structure (15) is formed as a housing or a housing-like frame.
12. Walzeinrichtung nach einem der vorhergehenden Ansprüche 1 bis12. Rolling device according to one of the preceding claims 1 to
11 , dadurch gekennzeichnet, dass die Drehzahl des als erstes mit dem Stahlband (11 ) in Berührung gelangenden Arbeitsrollenpaar (21) in Abhängigkeit der Giessrollen-Drehzahl und die Drehzahl des nachfolgenden Arbeitsrollenpaares (31 ) in Abhängigkeit der Drehzahl des vorgeschalteten Arbeitsrollenpaares (21 ) erfolgt.11, characterized in that the rotational speed of the first with the steel strip (11) coming into contact working roller pair (21) in dependence of the casting rolls speed and the rotational speed of the subsequent work roll pair (31) in dependence on the speed of the upstream working roll pair (21) ,
13. Walzeinrichtung nach einem der vorhergehenden Ansprüche 1 bis13. Rolling device according to one of the preceding claims 1 to
12, dadurch gekennzeichnet, dass dass mehrere solcher Rahmenkonstruktionen (15) mit jeweils wenigstens zwei Walzeinheiten (20, 30) hintereinander angeordnet sind. 12, characterized in that a plurality of such frame structures (15) with at least two roller units (20, 30) are arranged one behind the other.
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

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

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EP (1) EP1850978B1 (en)
JP (1) JP4823238B2 (en)
KR (1) KR101278764B1 (en)
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CA2598850C (en) 2014-04-29
CN101128270A (en) 2008-02-20
ES2385253T3 (en) 2012-07-20
EP1850978B1 (en) 2012-04-11
ATE552926T1 (en) 2012-04-15
JP2008538535A (en) 2008-10-30
KR101278764B1 (en) 2013-06-25
CH697624B1 (en) 2008-12-31
US7984634B2 (en) 2011-07-26
JP4823238B2 (en) 2011-11-24
US20080276680A1 (en) 2008-11-13
KR20070106531A (en) 2007-11-01
CN101128270B (en) 2011-12-14
CA2598850A1 (en) 2006-08-31

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