EP0937515A1 - Roll for influencing flatness - Google Patents
Roll for influencing flatness Download PDFInfo
- Publication number
- EP0937515A1 EP0937515A1 EP99102577A EP99102577A EP0937515A1 EP 0937515 A1 EP0937515 A1 EP 0937515A1 EP 99102577 A EP99102577 A EP 99102577A EP 99102577 A EP99102577 A EP 99102577A EP 0937515 A1 EP0937515 A1 EP 0937515A1
- Authority
- EP
- European Patent Office
- Prior art keywords
- roll
- rotating body
- roller
- jacket
- edge
- 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
Links
- 238000005452 bending Methods 0.000 claims abstract description 6
- 238000005096 rolling process Methods 0.000 claims description 22
- 230000007423 decrease Effects 0.000 claims description 2
- 239000000463 material Substances 0.000 claims description 2
- 239000002184 metal Substances 0.000 description 6
- 239000003921 oil Substances 0.000 description 3
- 230000006978 adaptation Effects 0.000 description 2
- 238000011109 contamination Methods 0.000 description 1
- 239000000839 emulsion Substances 0.000 description 1
- 239000010720 hydraulic oil Substances 0.000 description 1
- 238000009434 installation Methods 0.000 description 1
- 230000007246 mechanism Effects 0.000 description 1
- 238000000034 method Methods 0.000 description 1
- 238000003801 milling Methods 0.000 description 1
- 238000013000 roll bending Methods 0.000 description 1
- 239000010731 rolling oil Substances 0.000 description 1
- 238000001228 spectrum Methods 0.000 description 1
Images
Classifications
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B21—MECHANICAL METAL-WORKING WITHOUT ESSENTIALLY REMOVING MATERIAL; PUNCHING METAL
- B21B—ROLLING OF METAL
- B21B27/00—Rolls, roll alloys or roll fabrication; Lubricating, cooling or heating rolls while in use
- B21B27/02—Shape or construction of rolls
- B21B27/03—Sleeved rolls
- B21B27/05—Sleeved rolls with deflectable sleeves
-
- 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
-
- 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
Definitions
- the present invention relates to a roller, in particular a back-up roll, for rolling flat goods, which consists of a rotating Roll jacket with arranged inside the roll jacket Means for influencing the bending stiffness of the Rolled jacket exists.
- the rolling forces are For example, metal tape, work rolls on top applied and must be as even as possible over the the entire length of the roller, i.e. the line of contact between the circumference of the roller and the belt should be straight run. This straightness is due to the rolled product disturbed what is in a more stressed zone and noticeable crowning of the roller.
- jacket rolls as backup rolls to be used, despite the internal cavity high bending stiffness to reach.
- German patent application suggests this 196 37 584.3 before, the deflection of jacket rolls with internal Compensate for sliding bearings. It is about for example, spherical plain bearings on a supporting axis or shaft, which is arranged adjustable and fixable can be.
- the plain bearings are designed as oil film bearings.
- a disadvantage is that the compensation zone between the inner cups and the Backing roll jacket through the respective bearing width, number and arrangement is specified. That is why this system does not come without further actuators influencing flatness.
- US Pat. No. 4,407,151 also suggests an option to influence the bending stiffness of a jacket roll Introducing proppants into the cavity.
- Carrier disks attached to a shaft are to be selected Places over the roll length can be arranged.
- the Disks themselves can pass through the cavity of the roller Pressure to be postponed.
- the roll shell receives a shaft with a clearance fit.
- the adaptation to the flat material to be processed is by axial Shift of the respective shafts achieved by two support rollers.
- the present invention has for its object a rigid roller to create a simple and quick Adaptation to a change in rolling conditions, in particular the bandwidth.
- a roller is proposed that consists of a rotating one Roll jacket with one arranged inside the roll jacket Plain bearings in the form of a rotating body for influencing the bending stiffness of the roll shell exists.
- This Rotary body represents that generated by the rolling stock Load zone of the roll shell represents a counterforce this counterforce becomes a crown of the roll or work rolls counteracted.
- a quick and optimal adjustment to the change of Rolling conditions is achieved by the rotating body like this is shaped that one of the stressed zone of the roll shell corresponding load area part of the lateral surface of a is rotationally symmetrical body and the boundary of this Shell surface is designed so that along the circumference of the Rotary body width and / or position of the load area vary.
- the load area is part of the lateral surface, for example of a cylinder. It can also be domed, for example, by drawing the outline of an ellipsoid or paraboloid describes. It is also conceivable that the Has a certain pattern.
- the sliding body is not fixed, but rotatably mounted is and because of the proposed geometric shape, the Load area in the contact zone with other rollers or the rolling stock is brought into position by rotation, in which is the load area of the rotating body approximately that to be machined Bandwidth and the resulting Load zone in the roll jacket corresponds.
- the edge course as well as their contour is arbitrarily shaped. You can also several recesses of this type can be provided. The course of the boundary and the contour of these recesses will also be like the edge of the outer surface of the rotating body specifically calculated. These recessed areas as Relief areas are in the simultaneous occurrence of Center and edge waves or quarter waves in the band of Advantage.
- the rotating body has edge areas that correspond to the Connect the central load area. These marginal areas can also take any form.
- the circumference of the edge regions advantageously increases Ends of the rotating body down, for example frustoconical.
- the shape of the edge areas does not have to necessarily be rotationally symmetrical.
- a single rotating body is picked up by the jacket roller. It is also conceivable that within the cavity several side by side arranged rotating body are provided, each individually or together adapted to the rolling conditions by rotation can be.
- a rotating body can preferably be used, which is composed of several sub-areas, the are interlocking or can be moved away from each other.
- the proposed roller advantageously comes as a backup roller to use.
- quarto and other multi-roll stands are conceivable.
- Figure 1 shows an embodiment of the proposed rotating body 1, while in Figure 2 the installation of the Rotating body 1 in the support roller of a four-high mill stand is shown.
- the rotating body 1 has a central loading surface 2 on that part of the lateral surface of a rotationally symmetrical Body, in this particular embodiment of a cylinder, is.
- the boundary of this lateral surface 2 is designated 4.
- the edge course is a consequence of the product range and is calculated individually.
- the rotating body has next to the central loading zone 2 each adjoining edge areas 3.
- these edge areas 3 are crooked on the cylindrical Center area 2 cut and frustoconical.
- the cylinder 2 and the obliquely cut edge regions 3 have the same axis of rotation.
- a recess 10 is provided (dashed line), which in the rotating body for example by milling can be introduced.
- the recess shows a teardrop-shaped Edge course 11.
- the contour of the recess 10 inside the Rotary body is not shown, it can be any Accept course.
- Figure 2 shows schematically the proposed rotating body 1 as a plain bearing in a cut roll jacket 5, the moves rotating on a work roll 6 during the Rotation body locked in a predetermined angle of rotation is.
- the work roll 6 lies on the metal strip to be rolled 8th.
- the loads caused by the rolling stock act disadvantageous to the crown of the work roll 6 and thus back to the flatness of the metal strip 8.
- the rolling zone and the bulge of the Work roll 6 experience a counterforce through the backup roll, in particular through the rotating body 1.
- the rotating body 1 is turned on and found so that the for the occurring forces optimal load area 2 of the rotating body with the load zone 9 is used.
- Figure 3 shows the roll gap profile when rolling an 800 mm wide metal band in a four-high frame [2000 mm x 420 mm (AW) 1500 mm (SW)].
- AW 2000 mm x 420 mm
- SW 1500 mm
- Figure 4 shows a comparison of the roll gap profiles in the rolling process with conventional back-up roller bearings whose influence on crowning optimized for a 1200 mm wide belt is. It can be seen that the roll gap profiles are less box-shaped and thus run more unfavorably.
- Figure 5 shows the load distribution between the rotating body and the roll jacket over the belt width, here 800 mm.
- the set loading area width is 770 mm.
- the lateral surface of the rotating body is established uniform load profile between the load area and the rotating roller jacket.
- This even Load curve is synonymous with an almost constant Oil film thickness in the plain bearing and avoids unwanted Touching the slide bearing surfaces.
- the center piece of the rotating body i.e. the Load area is parabolic-barrel-shaped.
Abstract
Description
Die vorliegende Erfindung betrifft eine Walze, insbesondere eine Stützwalze, zum Walzen von Flachgut, die aus einem rotierenden Walzmantel mit innerhalb des Walzmantels angeordneten Mitteln zur Beeinflussung der Biegesteifigkeit des Walzmantels besteht.The present invention relates to a roller, in particular a back-up roll, for rolling flat goods, which consists of a rotating Roll jacket with arranged inside the roll jacket Means for influencing the bending stiffness of the Rolled jacket exists.
Beim Walzvorgang werden die Walzkräfte durch auf dem Flachgut, beispielsweise Metallband, aufliegende Arbeitswalzen aufgebracht und müssen dabei möglichst gleichmäßig über die gesamte Länge der Walze verteilt werden, d.h. die Berührungslinie zwischen dem Umfang der Walze und dem Band soll geradlinig verlaufen. Diese Geradlinigkeit wird durch das Walzprodukt gestört, was sich in einer stärker belasteten Zone und Balligkeit der Walze bemerkbar macht.During the rolling process, the rolling forces are For example, metal tape, work rolls on top applied and must be as even as possible over the the entire length of the roller, i.e. the line of contact between the circumference of the roller and the belt should be straight run. This straightness is due to the rolled product disturbed what is in a more stressed zone and noticeable crowning of the roller.
Um dies zu verhindern, werden üblicherweise auf die Arbeitswalzen Stützwalzen aufgelegt, die ausreichend biegesteif sein müssen. Zur Verhinderung der Balligkeit sind weiterhin Systeme bekannt, die über Hydraulikmechanismen die Balligkeit einer Walze und im Einzelfall auch die Abstützbreite verändern. Bei diesen Systemen wird die Balligkeit und gegebenenfalls auch die Nachgiebigkeit der Walze auf äußere Belastung längs des Ballens mit Hilfe von Öldruckpolstern und/oder hydraulisch betätigten Stützschuhen beeinflußt und an die Walzbedingungen angepaßt. Nachteilig sind hier die teilweise sehr aufwendige Hochdruck-Hydraulik sowie Probleme mit der Dichtigkeit, die in Verschmutzungen des Walzöls oder -emulsion durch das Hydrauliköl resultiert. Darüber hinaus wird der Einsatzbereich durch die Baugröße beschränkt, so daß diese Systeme zur Zeit ausschließlich als Stützwalzen eingesetzt werden können.To prevent this from happening, they are usually placed on the work rolls Support rollers placed, which are sufficiently rigid have to. To prevent crowning are still Systems known that hydraulic crown mechanisms a roller and in individual cases also change the support width. With these systems the crowning and if necessary also the resilience of the roller to external loads along the bale with the help of oil pressure pads and / or hydraulic operated footwear influenced and to the Rolling conditions adapted. Some of them are disadvantageous here very complex high-pressure hydraulics and problems with the Tightness resulting in contamination of the rolling oil or emulsion results from the hydraulic oil. Beyond that the area of application is limited by the size, so that these systems are currently used exclusively as backup rolls can be.
Zur Beeinflussung der Planheit und des Profils beim Walzen von Metallbändern sind weiterhin Systeme mit verschiebbaren Walzen bekannt. Hierbei wird entweder durch das partielle Verschieben von mindestens zwei Walzen die Lastverteilung zwischen den Walzen eingestellt oder der Walzspalt beeinflußt. Das CVC-Verfahren schlagt vor, durch gegensinniges Verschieben von geeignet konturierten Walzen auf Balligkeiten von Walzen zu reagieren.To influence the flatness and the profile during rolling of metal strips are still systems with sliding Known rollers. Here, either by the partial Moving the load distribution by at least two rollers adjusted between the rollers or influenced the roll gap. The CVC process suggests, through opposite Moving suitably contoured rollers to crowning of reacting to rollers.
Weiterhin ist es bekannt, auch Mantelwalzen als Stützwalzen einzusetzen, die trotz des Innenhohlraums hohe Biegesteifigkeiten erreichen. Hierzu schlägt die deutsche Patentanmeldung 196 37 584.3 vor, die Durchbiegung von Mantelwalzen mit innenliegenden Gleitlagern zu kompensieren. Es handelt sich beispielsweise um sphärische Gleitlager auf einer Tragachse bzw. Welle, die abstandsverstell- und festlegbar angeordnet werden können. Die Gleitlager sind als Ölfilmlager ausgebildet. Als nachteilig erweist es sich aber, daß die Kompensationszone zwischen den innenliegenden Lagerschalen und dem Stützwalzenmantel durch die jeweilige Lagerbreite, -zahl und -anordnung vorgegeben ist. Deshalb kommt dieses System nicht ohne weitere planheitsbeeinflussende Stellglieder aus.Furthermore, it is known to also use jacket rolls as backup rolls to be used, despite the internal cavity high bending stiffness to reach. The German patent application suggests this 196 37 584.3 before, the deflection of jacket rolls with internal Compensate for sliding bearings. It is about for example, spherical plain bearings on a supporting axis or shaft, which is arranged adjustable and fixable can be. The plain bearings are designed as oil film bearings. A disadvantage, however, is that the compensation zone between the inner cups and the Backing roll jacket through the respective bearing width, number and arrangement is specified. That is why this system does not come without further actuators influencing flatness.
Auch die US-Patentschrift 4,407,151 schlägt als Möglichkeit zur Beeinflussung der Biegesteifigkeit einer Mantelwalze das Einbringen von Stützmitteln in den Hohlraum vor. Zum Beispiel sollen auf eine Welle aufgebrachte Trägerscheiben an ausgesuchten Stellen über der Walzlänge angeordnet werden. Die Scheiben selbst können längs des Hohlraums der Walze durch Druck verschoben werden. Weiterhin wird vorgeschlagen, daß der Walzmantel eine Welle mit Spielpassung aufnimmt. Die Anpassung an das zu bearbeitende Flachgut wird durch axiale Verschiebung der jeweiligen Wellen von zwei Stützwalzen erreicht.US Pat. No. 4,407,151 also suggests an option to influence the bending stiffness of a jacket roll Introducing proppants into the cavity. For example Carrier disks attached to a shaft are to be selected Places over the roll length can be arranged. The Disks themselves can pass through the cavity of the roller Pressure to be postponed. It is also proposed that the roll shell receives a shaft with a clearance fit. The adaptation to the flat material to be processed is by axial Shift of the respective shafts achieved by two support rollers.
Der vorliegenden Erfindung liegt die Aufgabe zugrunde, eine biegesteife Walze zu schaffen, die eine einfache und schnelle Anpassung an eine Veränderung der Walzbedingungen, insbesondere der Bandbreite, ermöglicht.The present invention has for its object a rigid roller to create a simple and quick Adaptation to a change in rolling conditions, in particular the bandwidth.
Diese Aufgabe wird durch die Merkmale der Walze nach Anspruch 1 gelöst. Vorteilhafte Ausgestaltungen der Erfindung sind in den Unteransprüchen offenbart.This object is achieved by the features of the roller 1 solved. Advantageous embodiments of the invention are shown in disclosed in the subclaims.
Es wird eine Walze vorgeschlagen, die aus einem rotierenden Walzmantel mit einem innerhalb des Walzmantels angeordneten Gleitlager in Form eines Rotationskörpers zur Beeinflussung der Biegesteifigkeit des Walzmantels besteht. Dieser Rotationskörper stellt zu der durch das Walzgut erzeugten Belastungszone des Walzmantels eine Gegenkraft dar. Durch diese Gegenkraft wird einer Balligkeit der Walze bzw. Arbeitswalzen entgegengewirkt.A roller is proposed that consists of a rotating one Roll jacket with one arranged inside the roll jacket Plain bearings in the form of a rotating body for influencing the bending stiffness of the roll shell exists. This Rotary body represents that generated by the rolling stock Load zone of the roll shell represents a counterforce this counterforce becomes a crown of the roll or work rolls counteracted.
Eine schnelle und optimale Anpassung an die Veränderung der Walzbedingungen wird erreicht, indem der Rotationskörper so geformt ist, daß eine der beanspruchten Zone des Walzmantels entsprechende Belastungsfläche Teil der Mantelfläche eines rotationssymmetrischen Körpers ist und die Berandung dieser Mantelfläche so gestaltet ist, daß längs des Umfangs des Rotationskörpers Breite und/oder Lage der Belastungsfläche variieren.A quick and optimal adjustment to the change of Rolling conditions is achieved by the rotating body like this is shaped that one of the stressed zone of the roll shell corresponding load area part of the lateral surface of a is rotationally symmetrical body and the boundary of this Shell surface is designed so that along the circumference of the Rotary body width and / or position of the load area vary.
Die Wahl des rotationssymmetrischen Körpers sowie der Berandungsverlauf sind eine Folge von Berechnungen und in Abhängigkeit von dem zu walzenden Bandbreiten- sowie dem notwendigen Walzkraftspektrum bestimmbar. The choice of the rotationally symmetrical body as well as the Edges are a sequence of calculations and in Dependence on the bandwidth to be rolled and the necessary Rolling force spectrum can be determined.
Die Belastungsfläche ist beispielsweise Teil der Mantelfläche eines Zylinders. Sie kann auch gewölbt sein, zum Beispiel, indem sie die Kontur eines Ellipsoids oder Paraboloids beschreibt. Weiterhin ist vorstellbar, daß die Belastungsfläche ein bestimmtes Muster aufweist.The load area is part of the lateral surface, for example of a cylinder. It can also be domed, for example, by drawing the outline of an ellipsoid or paraboloid describes. It is also conceivable that the Has a certain pattern.
Der derart schon angepaßt hergestellte Rotationskörper ist während des Walzvorgangs selbst durch Drehung einfach und schnell an variierende Metallbandbreiten und somit Belastungskräfte, die auf die Mantelwalze wirken, anpaßbar.The rotational body that has already been produced in this way is during the rolling process itself simply by turning and quickly to varying metal strip widths and thus Load forces that act on the jacket roller are adjustable.
Indem der Gleitkörper nicht fest, sondern drehbar gelagert ist und wegen der vorgeschlagenen geometrischen Form kann die Belastungsfläche in der Kontaktzone mit anderen Walzen oder dem Walzgut durch Drehung in die Position gebracht werden, in der die Belastungsfläche des Rotationskörpers etwa der zu bearbeitenden Bandbreite und der daraus resultierenden Belastungszone im Walzmantel entspricht.By the sliding body is not fixed, but rotatably mounted is and because of the proposed geometric shape, the Load area in the contact zone with other rollers or the rolling stock is brought into position by rotation, in which is the load area of the rotating body approximately that to be machined Bandwidth and the resulting Load zone in the roll jacket corresponds.
Um die Anpaßbarkeit des Rotationskörpers zu erhöhen, wird vorgeschlagen, daß der Rotationskörper im Bereich seiner Belastungsfläche eine Aussparung aufweist, deren Berandungsverlauf sowie deren Kontur beliebig geformt ist. Ebenso können mehrere Aussparungen dieser Art vorgesehen sein. Der Berandungsverlauf und die Kontur dieser Aussparungen werden ebenfalls wie die Berandung der Mantelfläche des Rotationskörpers spezifisch berechnet. Diese ausgesparten Bereiche als Entlastungsbereiche sind beim gleichzeitigen Auftreten von Mitten- und Randwellen oder bei Viertelwellen im Band von Vorteil.In order to increase the adaptability of the rotating body proposed that the rotating body in the area of its load area has a recess, the edge course as well as their contour is arbitrarily shaped. You can also several recesses of this type can be provided. The course of the boundary and the contour of these recesses will also be like the edge of the outer surface of the rotating body specifically calculated. These recessed areas as Relief areas are in the simultaneous occurrence of Center and edge waves or quarter waves in the band of Advantage.
Der Rotationskörper weist Randbereiche auf, die sich an die mittige Belastungsfläche anschließen. Diese Randbereiche können ebenfalls jede beliebige Form annehmen. Vorteilhafterweise nimmt der Umfang der Randbereiche zu den Enden des Rotationskörpers hin ab, beispielsweise kegelstumpfförmig. Die Form der Randbereiche muß aber nicht notwendigerweise rotationssymmetrisch sein.The rotating body has edge areas that correspond to the Connect the central load area. These marginal areas can also take any form. The circumference of the edge regions advantageously increases Ends of the rotating body down, for example frustoconical. The shape of the edge areas does not have to necessarily be rotationally symmetrical.
Eine Ausführungsform schlägt vor, daß ein einziger Rotationskörper von der Mantelwalze aufgenommen wird. Es ist auch vorstellbar, daß innerhalb des Hohlraumes mehrere nebeneinander angeordnete Rotationskörper vorgesehen sind, die jeweils einzeln oder zusammen durch Drehung an die Walzbedingungen angepaßt werden können.One embodiment suggests that a single rotating body is picked up by the jacket roller. It is also conceivable that within the cavity several side by side arranged rotating body are provided, each individually or together adapted to the rolling conditions by rotation can be.
Weiterhin kann bevorzugt ein Rotationskörper verwendet werden, der sich aus mehreren Teilbereichen zusammensetzt, die passend ineinandergreifen oder voneinander weg bewegbar sind.Furthermore, a rotating body can preferably be used, which is composed of several sub-areas, the are interlocking or can be moved away from each other.
Vorteilhafterweise kommt die vorgeschlagene Walze als Stützwalze zur Anwendung. Hierbei sind beispielsweise Quarto-und andere Mehrwalzengerüste denkbar.The proposed roller advantageously comes as a backup roller to use. Here are, for example, quarto and other multi-roll stands are conceivable.
Weitere Einzelheiten und Vorteile der Erfindung ergeben sich aus den Ansprüchen und der nachfolgenden Beschreibung, in der das in den Figuren dargestellte Ausführungsbeispiel der Erfindung näher erläutert wird. Hierbei zeigen:
- Figur 1
- eine schematische Ansicht des vorgeschlagenen Rotationskörpers;
Figur 2- die obere Hälfte eines Quarto-Walzensatzes mit einer Stützwalze, bestehend aus dem Rotationskörper nach Figur 1 und einem Walzenmantel;
Figur 3- eine Darstellung des Walzspaltprofils über der Bandbreite
beim Walzvorgang mit der Stützwalzenlagerung
nach
Figur 3; Figur 4- eine Darstellung des Walzspaltprofils über der Bandbreite beim Walzvorgang mit konventioneller Stützwalzenlagerung;
Figur 5- eine Darstellung der Lastverteilung zwischen dem Rotationskörper und dem Walzmantel über der Bandbreite.
- Figure 1
- a schematic view of the proposed rotating body;
- Figure 2
- the upper half of a four-high roller set with a backup roller, consisting of the rotating body according to Figure 1 and a roller shell;
- Figure 3
- a representation of the roll gap profile over the strip width during the rolling process with the backup roller bearing according to Figure 3;
- Figure 4
- a representation of the roll gap profile over the bandwidth during the rolling process with conventional backup roll storage;
- Figure 5
- a representation of the load distribution between the rotating body and the roll shell over the bandwidth.
Figur 1 zeigt eine Ausführungsform des vorgeschlagenen Rotationskörpers 1, während in Figur 2 schematisch der Einbau des Rotationskörpers 1 in der Stützwalze eines Quarto-Walzgerüstes dargestellt ist.Figure 1 shows an embodiment of the proposed rotating body 1, while in Figure 2 the installation of the Rotating body 1 in the support roller of a four-high mill stand is shown.
Der Rotationskörper 1 weist eine mittige Belastungsfläche 2
auf, die Teil der Mantelfläche eines rotationssymmetrischen
Körpers, bei dieser speziellen Ausführungsform eines Zylinders,
ist. Die Berandung dieser Mantelfläche 2 ist mit 4 bezeichnet.
Der Randverlauf ist eine Folge des Produktprogramms
und wird individuell berechnet. Bei dieser Ausführungsform
beschreiben die Ränder 4 der abgerollten Mantelfläche jeweils
eine Sinuskurve. Dies bewirkt, daß der Abstand der Ränder
voneinander über den Umfang des Rotationskörpers zunimmt
(Abstand a) und wieder abnimmt (Abstand b).The rotating body 1 has a
Der Rotationskörper weist neben der mittigen Belastungszone 2
jeweils sich anschließende Randbereiche 3 auf. In dem gezeigten
Beispiel sind diese Randbereiche 3 schief an den zylindrischen
Mittenbereich 2 geschnitten und kegelstumpfförmig.
Der Zylinder 2 und die schief geschnittenen Randbereiche 3
weisen die gleiche Rotationsachse auf.The rotating body has next to the
Im rückwärtigen Bereich der Belastungsfläche 2 des Rotationskörpers
ist eine Aussparung 10 vorgesehen (gestrichelte Linie),
die in den Rotationskörper beispielsweise durch Fräsen
eingebracht werden kann. Bei dem hier beschriebenen Ausführungsbeispiel
zeigt die Aussparung einen tropfenförmigen
Randverlauf 11. Die Kontur der Aussparung 10 im Inneren des
Rotationskörpers ist nicht dargestellt, sie kann jeden beliebigen
Verlauf annehmen.In the rear area of the
Figur 2 zeigt schematisch den vorgeschlagenen Rotationskörper
1 als Gleitlager in einem aufgeschnittenen Walzmantel 5, der
sich rotierend auf einer Arbeitswalze 6 bewegt, während der
Rotationskörper in einem vorgegebenen Drehwinkel arretiert
ist. Die Arbeitswalze 6 liegt auf dem zu walzenden Metallband
8.Figure 2 shows schematically the proposed rotating body
1 as a plain bearing in a
Beim Walzvorgang wirken sich die Belastungen durch das Walzgut
nachteilig auf die Balligkeit der Arbeitswalze 6 und somit
wieder auf die Planheit des Metallbandes 8 aus. Die durch
das Walzgut erzeugte Belastungszone und die Ausbauchung der
Arbeitswalze 6 erfahren eine Gegenkraft durch die Stützwalze,
insbesondere durch den Rotationskörper 1. Der Rotationskörper
1 wird durch Drehung so ein- und festgestellt, daß die für
die auftretenden Kräfte optimale Belastungsfläche 2 des Rotationskörpers
mit der Lastzone 9 zum Einsatz kommt.During the rolling process, the loads caused by the rolling stock act
disadvantageous to the crown of the
Figur 3 zeigt das Walzspaltprofil beim Walzen eines 800 mm breiten Metallbandes in einem Quarto-Gerüst [2000 mm x 420 mm (AW) 1500 mm (SW)]. Es kam eine nach dem oben beschriebenen Prinzip arbeitende Stützwalze zum Einsatz. Die Breite der Belastungsfläche wurde 30 mm schmaler als die Bandbreite gewählt. Als Folge des Einsatzes der erfindungsgemäßen Walze stellt sich ein nahezu kastenförmiges Walzspaltprofil ein ohne Hinzuziehung eines anderen walzspaltprofilbeeinflussenden Hilfsmittels wie Walzbiege- oder verschiebesysteme.Figure 3 shows the roll gap profile when rolling an 800 mm wide metal band in a four-high frame [2000 mm x 420 mm (AW) 1500 mm (SW)]. One came after the one described above Principle working backup roller for use. The width of the loading area was chosen 30 mm narrower than the bandwidth. As a result of the use of the roller according to the invention there is an almost box-shaped roll gap profile without involving another gap profile Aids such as roll bending or sliding systems.
Figur 4 zeigt im Vergleich die Walzspaltprofile beim Walzprozeß mit konventioneller Stützwalzenlagerung, deren Balligkeitsbeeinflussung für ein 1200 mm breites Band optimiert ist. Es ist ersichtlich, daß die Walzspaltprofile weniger kastenförmig und damit ungünstiger verlaufen. Figure 4 shows a comparison of the roll gap profiles in the rolling process with conventional back-up roller bearings whose influence on crowning optimized for a 1200 mm wide belt is. It can be seen that the roll gap profiles are less box-shaped and thus run more unfavorably.
Figur 5 stellt die Lastverteilung zwischen dem Rotationskörper und dem Walzmantel über der Bandbreite, hier 800 mm, dar. Die eingestellte Belastungsflächenbreite beträgt 770 mm.Figure 5 shows the load distribution between the rotating body and the roll jacket over the belt width, here 800 mm. The set loading area width is 770 mm.
Durch einen geeignet gewählten Durchmesserverlauf und Wölbung der Mantelfläche des Rotationskörpers stellt sich ein gleichmäßiger Lastverlauf zwischen der Belastungsfläche und dem rotierenden Walzmantel ein. Dieser gleichmäßige Lastverlauf ist gleichbedeutend mit einer nahezu konstanten Ölfilmdicke im Gleitlager und vermeidet unerwünschte Berührungen der Gleitlageroberflächen. Im vorliegenden Fall entsprach die hierfür notwendige Formgebung des Mittenstücks des Rotationskörpers einer konventionellen Balligkeit von 0,4 mm Durchmesserdifferenz längs des Ballens (bez. auf 2000 mm). Das Mittenstück des Rotationskörpers, d.h. die Belastungsfläche ist parabolisch-tonnenförmig.Through a suitably chosen diameter course and curvature the lateral surface of the rotating body is established uniform load profile between the load area and the rotating roller jacket. This even Load curve is synonymous with an almost constant Oil film thickness in the plain bearing and avoids unwanted Touching the slide bearing surfaces. In the present case corresponded to the necessary shape of the center piece of the rotating body of a conventional crowning of 0.4 mm diameter difference along the bale (related to 2000 mm). The center piece of the rotating body, i.e. the Load area is parabolic-barrel-shaped.
Nicht nur die Änderung der Bandbreite läßt sich mit Hilfe der vorgeschlagenen Walze kompensieren, sondern auch die Auswirkungen veränderlicher Walzkräfte. Durch Drehung des Rotationskörpers und daraus resultierender Einstellung der Belastungsfläche wird es möglich, auf verschiedene Walzkräfte zu reagieren und ein gewünschtes kastenförmiges Walzspaltprofil sowie gleichmäßige Lagerbelastungen zu erzeugen.Not only can the bandwidth be changed with the help of proposed roller, but also compensate for the impact variable rolling forces. By rotating the rotating body and the resulting adjustment of the load area it becomes possible to face different rolling forces react and a desired box-shaped roll gap profile as well as to generate even bearing loads.
Claims (7)
dadurch gekennzeichnet,
daß es sich bei diesem Mittel um ein Gleitlager in Form eines Rotationskörpers (1) handelt, der drehbar einstellbar und so geformt ist, daß seine der beanspruchten Zone des Walzmantels entsprechende Belastungsfläche (2) Teil der Mantelfläche eines rotationssymmetrischen Körpers ist und die Berandung (4) dieser Mantelfläche so gestaltet ist, daß längs des Umfangs des Rotationskörpers Breite und/oder Lage der Belastungsflache variieren.Roll consisting of a rotating roll jacket with means arranged within the roll jacket to influence the bending stiffness of the roll jacket,
characterized by
that this means is a slide bearing in the form of a rotating body (1) which is rotatably adjustable and shaped such that its load area (2) corresponding to the stressed zone of the roll shell is part of the outer surface of a rotationally symmetrical body and the edge (4 ) this lateral surface is designed so that the width and / or position of the loading surface vary along the circumference of the rotating body.
dadurch gekennzeichnet,
daß der Rotationskörper im Bereich seiner Belastungsfläche (2) eine Aussparung (10) aufweist, deren Berandungsverlauf sowie deren Innenkontur beliebig geformt ist.Roll according to claim 1,
characterized by
that the rotating body has a recess (10) in the area of its loading surface (2), the edge course and the inner contour of which is arbitrarily shaped.
dadurch gekennzeichnet,
daß der Rotationskörper (1) sich an die Belastungsfläche (2) anschließende Randbereiche (3) aufweist, deren Umfang zu den Enden hin abnimmt.Roller according to claim 1 or 2,
characterized by
that the rotating body (1) adjoins the load area (2) adjacent edge regions (3), the circumference of which decreases towards the ends.
dadurch gekennzeichnet,
daß die Randbereiche (3) kegelstumpfförmig sind. Roll according to claim 3,
characterized by
that the edge areas (3) are frustoconical.
dadurch gekennzeichnet,
daß mehrere nebeneinander angeordnete Rotationskörper (1) innerhalb des Walzmantels (5) vorgesehen sind.Roll according to one of the preceding claims,
characterized by
that a plurality of rotary bodies (1) arranged next to one another are provided within the roll shell (5).
dadurch gekennzeichnet,
daß sich der Rotationskörper aus mehreren Teilbereichen zusammensetzt, die passend ineinandergreifen oder voneinander weg bewegbar sind.Roll according to one of the preceding claims,
characterized by
that the rotary body is composed of several sub-areas which fit into one another or can be moved away from one another.
dadurch gekennzeichnet,
daß die Walze zur Anwendung als Stützwalze in einem Quarto-oder beliebigen Mehrwalzengerüst zum Walzen von Bandmaterial kommt.Roll according to one of the preceding claims,
characterized by
that the roller is used as a backup roller in a four-high or any multi-roll stand for rolling strip material.
Applications Claiming Priority (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| DE19807115 | 1998-02-20 | ||
| DE19807115A DE19807115C1 (en) | 1998-02-20 | 1998-02-20 | roller |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| EP0937515A1 true EP0937515A1 (en) | 1999-08-25 |
| EP0937515B1 EP0937515B1 (en) | 2003-04-16 |
Family
ID=7858375
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| EP99102577A Expired - Lifetime EP0937515B1 (en) | 1998-02-20 | 1999-02-11 | Roll for influencing flatness |
Country Status (11)
| Country | Link |
|---|---|
| US (1) | US6138487A (en) |
| EP (1) | EP0937515B1 (en) |
| JP (1) | JP4778596B2 (en) |
| KR (1) | KR100581188B1 (en) |
| CN (1) | CN1113709C (en) |
| AT (1) | ATE237412T1 (en) |
| BR (1) | BR9917373A (en) |
| CA (1) | CA2262261C (en) |
| DE (2) | DE19807115C1 (en) |
| RU (1) | RU2220797C2 (en) |
| TW (1) | TW396065B (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| EP1179373A2 (en) * | 2000-08-10 | 2002-02-13 | SMS Demag AG | Hollow shell roll |
| US8789401B2 (en) | 2005-07-07 | 2014-07-29 | Sms Siemag Aktiengesellschaft | Method for producing a support roll for a rolling mill |
Families Citing this family (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP3747786B2 (en) | 2001-02-05 | 2006-02-22 | 株式会社日立製作所 | Rolling method and rolling equipment for plate rolling machine |
| US8607848B2 (en) * | 2008-08-05 | 2013-12-17 | Nucor Corporation | Method for casting metal strip with dynamic crown control |
| US8607847B2 (en) * | 2008-08-05 | 2013-12-17 | Nucor Corporation | Method for casting metal strip with dynamic crown control |
| DE102010014867A1 (en) * | 2009-04-17 | 2010-11-18 | Sms Siemag Ag | Method for providing at least one work roll for rolling a rolling stock |
| US8505611B2 (en) | 2011-06-10 | 2013-08-13 | Castrip, Llc | Twin roll continuous caster |
| CN102310082B (en) * | 2011-06-07 | 2015-12-02 | 东莞新能源科技有限公司 | pressure roller |
Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS57127507A (en) * | 1981-01-30 | 1982-08-07 | Ishikawajima Harima Heavy Ind Co Ltd | Rolling mill |
| GB2094687A (en) * | 1981-03-12 | 1982-09-22 | Davy Loewy Ltd | Rolling mill rolls |
| US4407151A (en) * | 1980-07-17 | 1983-10-04 | Davey-Loewy Limited | Rolling mill |
| GB2238597A (en) * | 1989-09-15 | 1991-06-05 | Davy Mckee | Rolling mill rolls |
| EP0829314A1 (en) * | 1996-09-14 | 1998-03-18 | Sms Schloemann-Siemag Aktiengesellschaft | Bearing for stiff shell rolls, mounted on a shaft or an axle |
Family Cites Families (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS5744404A (en) * | 1980-07-17 | 1982-03-12 | Davy Loewy Ltd | Rolling mill |
| JPS57159206A (en) * | 1981-03-12 | 1982-10-01 | Davy Loewy Ltd | Roll for rolling mill |
| FR2553312B1 (en) * | 1983-10-14 | 1987-05-22 | Clecim Sa | METHOD FOR ADJUSTING THE THICKNESS AND PROFILE OF A FLAT PRODUCT DURING LAMINATION |
| CH663452A5 (en) * | 1983-12-22 | 1987-12-15 | Escher Wyss Ag | ROLLING DEVICE. |
| JPS6158904U (en) * | 1984-09-18 | 1986-04-21 | ||
| JPS61226105A (en) * | 1985-03-30 | 1986-10-08 | Nisshin Steel Co Ltd | Roll for multi-stages rolling mill |
| US4722212A (en) * | 1985-11-06 | 1988-02-02 | United Engineering Rolling Mills, Inc. | Self-compensating roll |
| JPH03142008A (en) * | 1989-10-27 | 1991-06-17 | Sumitomo Metal Ind Ltd | Roll for adjusting crown |
-
1998
- 1998-02-20 DE DE19807115A patent/DE19807115C1/en not_active Expired - Fee Related
-
1999
- 1999-02-04 US US09/244,649 patent/US6138487A/en not_active Expired - Fee Related
- 1999-02-09 TW TW088101949A patent/TW396065B/en active
- 1999-02-11 DE DE59905024T patent/DE59905024D1/en not_active Expired - Lifetime
- 1999-02-11 EP EP99102577A patent/EP0937515B1/en not_active Expired - Lifetime
- 1999-02-11 AT AT99102577T patent/ATE237412T1/en active
- 1999-02-15 CA CA002262261A patent/CA2262261C/en not_active Expired - Fee Related
- 1999-02-18 BR BR9917373-5A patent/BR9917373A/en not_active IP Right Cessation
- 1999-02-19 KR KR1019990005478A patent/KR100581188B1/en not_active IP Right Cessation
- 1999-02-19 RU RU99103331/02A patent/RU2220797C2/en not_active IP Right Cessation
- 1999-02-19 JP JP04198299A patent/JP4778596B2/en not_active Expired - Fee Related
- 1999-02-20 CN CN99102232A patent/CN1113709C/en not_active Expired - Fee Related
Patent Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US4407151A (en) * | 1980-07-17 | 1983-10-04 | Davey-Loewy Limited | Rolling mill |
| JPS57127507A (en) * | 1981-01-30 | 1982-08-07 | Ishikawajima Harima Heavy Ind Co Ltd | Rolling mill |
| GB2094687A (en) * | 1981-03-12 | 1982-09-22 | Davy Loewy Ltd | Rolling mill rolls |
| GB2238597A (en) * | 1989-09-15 | 1991-06-05 | Davy Mckee | Rolling mill rolls |
| EP0829314A1 (en) * | 1996-09-14 | 1998-03-18 | Sms Schloemann-Siemag Aktiengesellschaft | Bearing for stiff shell rolls, mounted on a shaft or an axle |
| DE19637584A1 (en) * | 1996-09-14 | 1998-03-19 | Schloemann Siemag Ag | Bearing for rigid jacket rolls on a support axle or support shaft |
Non-Patent Citations (1)
| Title |
|---|
| PATENT ABSTRACTS OF JAPAN vol. 006, no. 224 (M - 170) 9 November 1982 (1982-11-09) * |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| EP1179373A2 (en) * | 2000-08-10 | 2002-02-13 | SMS Demag AG | Hollow shell roll |
| EP1179373A3 (en) * | 2000-08-10 | 2004-03-24 | SMS Demag AG | Hollow shell roll |
| US8789401B2 (en) | 2005-07-07 | 2014-07-29 | Sms Siemag Aktiengesellschaft | Method for producing a support roll for a rolling mill |
Also Published As
| Publication number | Publication date |
|---|---|
| CN1226469A (en) | 1999-08-25 |
| JP4778596B2 (en) | 2011-09-21 |
| CN1113709C (en) | 2003-07-09 |
| CA2262261A1 (en) | 1999-08-20 |
| RU2220797C2 (en) | 2004-01-10 |
| KR19990072752A (en) | 1999-09-27 |
| CA2262261C (en) | 2008-07-08 |
| EP0937515B1 (en) | 2003-04-16 |
| TW396065B (en) | 2000-07-01 |
| BR9917373A (en) | 2002-06-11 |
| ATE237412T1 (en) | 2003-05-15 |
| US6138487A (en) | 2000-10-31 |
| DE19807115C1 (en) | 1999-09-09 |
| DE59905024D1 (en) | 2003-05-22 |
| KR100581188B1 (en) | 2006-05-17 |
| JPH11309502A (en) | 1999-11-09 |
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