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EP0281782A1 - Rolling mill stand - Google Patents

Rolling mill stand Download PDF

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Publication number
EP0281782A1
EP0281782A1 EP88101992A EP88101992A EP0281782A1 EP 0281782 A1 EP0281782 A1 EP 0281782A1 EP 88101992 A EP88101992 A EP 88101992A EP 88101992 A EP88101992 A EP 88101992A EP 0281782 A1 EP0281782 A1 EP 0281782A1
Authority
EP
European Patent Office
Prior art keywords
rolls
chocks
work rolls
roll stand
roll
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
EP88101992A
Other languages
German (de)
French (fr)
Other versions
EP0281782B1 (en
Inventor
Erich Stoy
Wilfried Bald
Hans Römmen
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.)
SMS Siemag AG
Original Assignee
SMS Schloemann Siemag AG
Schloemann Siemag AG
Priority date (The priority date 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 date listed.)
Filing date
Publication date
Application filed by SMS Schloemann Siemag AG, Schloemann Siemag AG filed Critical SMS Schloemann Siemag AG
Priority to AT88101992T priority Critical patent/ATE72147T1/en
Publication of EP0281782A1 publication Critical patent/EP0281782A1/en
Application granted granted Critical
Publication of EP0281782B1 publication Critical patent/EP0281782B1/en
Anticipated expiration legal-status Critical
Expired - Lifetime legal-status Critical Current

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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
    • B21B13/001—Convertible or tiltable stands, e.g. from duo to universal stands, from horizontal to vertical 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
    • 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
    • B21B2013/026—Quinto, five high-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
    • B21B2013/028—Sixto, six-high stands
    • 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
    • B21B31/00—Rolling stand structures; Mounting, adjusting, or interchanging rolls, roll mountings, or stand frames
    • B21B31/16—Adjusting or positioning rolls
    • B21B31/20—Adjusting or positioning rolls by moving rolls perpendicularly to roll axis
    • B21B31/22—Adjusting or positioning rolls by moving rolls perpendicularly to roll axis mechanically, e.g. by thrust blocks, inserts for removal
    • B21B31/30—Adjusting or positioning rolls by moving rolls perpendicularly to roll axis mechanically, e.g. by thrust blocks, inserts for removal by wedges or their equivalent

Definitions

  • the present invention relates to a roll stand for producing a rolling stock, in particular a rolled strip, with work rolls, back-up rolls or intermediate rolls and back-up rolls.
  • Such a roll stand of the same type is described in EP-PS 0059417.
  • the known device is provided with a roller bending device, the chocks of the intermediate rollers being guided between blocks anchored in the stator windows and connected to the blocks by piston-cylinder units which can be acted upon on both sides and which are assigned to the blocks, and a guide piece on each block is guided vertically displaceably and the guide pieces are positively connected to the chocks by horizontal guides in the vertical direction.
  • a multiple use of this known roll stand for example as a reversing stand and / or skin pass mill, is not provided for according to the cited document, rather a separate skin pass mill would generally be used if required.
  • the device should be able to be easily adapted to different use variants. A trouble-free production process with still reasonable changeover times should be guaranteed without loss of quality for the rolled product.
  • the object is achieved according to the invention in that the intermediate rolls with their bearings and the associated slim work rolls are interchangeable with thick work rolls.
  • the roll stand according to the invention can be used both as a six-high reduction stand, and advantageously as a duo stand or as a four-high stand.
  • the intermediate roll bending block can advantageously be used as a new work roll bending block.
  • the interchangeable rollers are designed as a quick-change unit and are arranged in the stator windows.
  • a rolling mill operated as a single six-high reduction stand or reversing stand e.g. B. for the production of stainless steel strip with an initial thickness of about 8 mm to a final thickness of about 0.4 mm, can be used in a simple manner as a double skin pass mill in the same roll stand.
  • the intermediate and work rolls of the six-roll arrangement are replaced by a duo arrangement, an air gap remaining between the support rolls and the new work rolls.
  • the air gap between the work and backup rolls can simply be reduced to zero, so that the transfer of the roll forces then takes place directly between the support rolls and work rolls and not, as with the duo stand, via the chocks of the backup rolls onto the chocks of the Work rolls.
  • the work rolls can be replaced individually or together for a short time, the back-up rolls in turn remaining in the stand.
  • An advantageous embodiment of the invention provides that the chocks of the work rolls are provided with spacers with respect to the chocks of the backup rolls when used as a duo stand are, the chocks of the work rolls are fitted in guides that serve as guides when used as a sixth scaffold for the chocks of the intermediate rolls. Special holding or guiding devices can thus be omitted, which saves costs.
  • the spacers are designed as plates and are detachably connected to the chocks of the work rolls. This is a particularly simple and inexpensive measure to form an air gap between the work and backup rolls in the dual skin pass mill.
  • ⁇ lie one above the other form a spacer.
  • the total thickness of the spacers is adapted to the expected or approved roll wear, so that an air gap between the work and backup rolls is constantly maintained during operation of the roll stand as a duo rolling mill.
  • the spacers can be connected to the chocks in a form-fitting manner. This is a measure with which a particularly quick change or installation of the spacers can be ensured.
  • the work rolls have a bale contour which is curved differently in the direction of the two ends, in particular asymmetrical.
  • a Optimal influence on the roll gap in adaptation to the surface conditions of the rolling stock on the one hand and on the other to the roll wear.
  • the support rolls can have a bend contour which is curved differently in the direction of the two ends, in particular asymmetrical, whereby the roll gap is also influenced.
  • a particularly precise adaptation of the roll gap to the changing rolling conditions can be carried out.
  • the six-high mill stand shown has in the usual way two roll stands (1) arranged at a distance from one another, only one of which is shown in detail.
  • the roll stands (1) each have a stand window (2), in which two slim work rolls (3, 4) are received, which are supported on both sides by the support arms (5, 6; 7, 8) in a known manner.
  • the support rollers (10, 11) also located in the frame (1) or in the stand window (2) are, as is known, mounted in chocks (12, 13) at their ends. Between the slender work rolls (3, 4) and the support rolls (10, 11) there are intermediate rolls (14, 15) which in turn are held by their chocks (16, 17).
  • the insertion pieces (16, 17) for the two intermediate rolls (14, 15) are positively connected in the vertical direction, but are horizontally displaceable with the guide pieces (20 - 23) for the changing process.
  • the chocks (16, 17) of the upper and lower intermediate rollers (14, 15) are each assigned adjusting means (24 - 27) in the form of hydraulically actuated piston-cylinder units in the area of the blocks fixed to the stand.
  • These adjustment means or bending devices (24-27) for the intermediate rollers (14, 15) are each installed in the associated guide pieces (20-23). At the chocks (12) of the upper support roller (10) are attacked by the adjusting device (28) of the roll stand.
  • the rolling forces are first transferred in a known manner via the chocks (12, 13) onto the support rolls (10, 11), then at the points of contact of the support rolls (10, 11) with the intermediate rolls (14, 15 ) to this and from there to the work rolls (3, 4) or the rolling stock rolled in the rolling plane (29).
  • FIG. 2 shows the use of the roll stand as a double skin pass stand according to the invention
  • the chocks (30, 31) of the new thick work rolls (33, 34) with spacers (35, 36) with respect to the chocks (12, 13) of the support rolls (10, 11) are provided so that there is no contact between the bales of the support rollers (10, 11) and the bales of the thick work rollers (33, 34).
  • the chocks (30, 31) of the work rolls (33, 34) are fitted into the guide pieces (20 - 23) which serve as guides for the chocks of the intermediate rolls when used as a sex scaffold according to FIG. 1 (see FIG. 1, Chocks 16, 17; intermediate rolls 14, 15).
  • the intermediate roll bending block with the adjusting means (24-27) can advantageously be used as a new work roll bending block for crowning the work rolls (33, 34).
  • the spacers (35, 36) are designed as plates and are detachably connected to the chocks (30, 31) of the work rolls (33, 34), a plurality of plates one above the other forming a spacer (35, 36) can form.
  • the intermediate rolls with their bearings and the slim work rolls (cf. (5 - 8) are retracted hydraulically as far as possible to create space for the thick work rolls (33, 34) and their chocks (30, 31).
  • the chocks (12, 13) with the support rollers (10, 11) are moved apart via the adjusting means (24 - 27) and the new work rollers (33, 34) together with the chocks (30, 31) and the spacers ( 35, 36) moved into the stand window (2).
  • the adjustment means (24 - 27) are now released.
  • the rolling forces are transmitted via the chocks (12, 13), the spacers (35, 36), the chocks (30, 31) to the thick work rolls (33, 34).
  • the dual skin pass mill when the spacers are removed (cf. FIG. 2, numbers 35, 36), the dual skin pass mill can also be used as a four-high stand, in particular when transmitting rolling forces of more than 2000 t.
  • the rolling forces are then introduced directly between support rolls (10, 11) and work rolls (33, 34), i. H. without detour via the chocks (12, 13) and (30, 31).
  • the spacers can have any shape and can be divided not only horizontally but also vertically.
  • the respective structural design is left to the person skilled in the art in adaptation to the use.

Landscapes

  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Metal Rolling (AREA)
  • Reduction Rolling/Reduction Stand/Operation Of Reduction Machine (AREA)
  • Bending Of Plates, Rods, And Pipes (AREA)
  • Crushing And Grinding (AREA)
  • Rolls And Other Rotary Bodies (AREA)
  • Coating With Molten Metal (AREA)

Abstract

The rolling mill comprises a plurality of working rolls and supporting rolls or a plurality of working rolls, intermediate rolls and supporting rolls. The intermediate rolls with their mounts and the slender working rolls ussed with them in six-high operation are exchangeable with or replaceable by larger thicker working rolls for two-high operation. No contact can occur between the body of a working roll and the body of the adjacent supporting roll during use as a two-high mill. In two-high operation the mount of a working roll is provided with a spacer piece engaging against the mounting member of the adjacent supporting roll. The mounts of the thicker working rolls used in two-high operation can be fitted into the guide pieces which act as guides for the mounting pieces of the intermediate rolls when the rolling mill is used as a six-high mill.

Description

Die vorliegende Erfindung betrifft ein Walzgerüst zur Herstellung eines Walzgutes, insbesondere eines Walzbandes, mit Arbeitswalzen, Stützwalzen oder Zwischenwalzen und Stützwalzen.The present invention relates to a roll stand for producing a rolling stock, in particular a rolled strip, with work rolls, back-up rolls or intermediate rolls and back-up rolls.

Ein derartiges gattungsgleiches Walzgerüst wird in der EP-PS 0059417 beschrieben. Die bekannte Vorrichtung ist mit einer Walzenbiegeeinrichtung versehen, wobei die Einbaustücke der Zwischenwalzen zwischen in den Ständerfenstern verankerten Blöcken geführt und zur Beaufschlagung für die Arbeitswalzen-Ballenkorrektur durch beidseitig beaufschlagbare, den Blöcken zugeordnete Kolben-Zylinder-Einheiten verbunden sind und wobei an jedem Block ein Führungsstück vertikal verschiebbar geführt ist und die Führungsstücke mit den Einbaustücken durch Horizontalführungen in vertikaler Richtung formschlüssig verbunden sind. Eine Mehrfachverwendung dieses bekannten Walzgerüsts beispielsweise als Reversiergerüst und/oder Dressiergerüst ist nach der genannten Druckschrift nicht vorgesehen, vielmehr würde bei Bedarf im allgemeinen ein separates Dressiergerüst verwendet werden. In vielen Fällen kann es aber sinnvoll sein, wenn dasselbe Walzgerüst für verschiedene Aufgaben genutzt wird, um so die Investitionskosten zu senken, insbesondere für die Verarbeitung kleiner Losgrößen. Im allgemeinen ergeben sich dabei verhältnismäßig lange Umrüstzeiten bis zu acht Stunden, wenn beispielsweise bei der Umstellung vom Sexto- Betrieb auf Duo- Betrieb die Arbeits- Zwischen- und Stützwalzen aus dem Walzenständer entfernt und gegen einen neuen Arbeitswalzensatz ausgetauscht werden. Auch sind konstruktive Anpassungen insbesondere der Walzenantriebe erforderlich, verbunden mit erhöhten Aufwendungen.Such a roll stand of the same type is described in EP-PS 0059417. The known device is provided with a roller bending device, the chocks of the intermediate rollers being guided between blocks anchored in the stator windows and connected to the blocks by piston-cylinder units which can be acted upon on both sides and which are assigned to the blocks, and a guide piece on each block is guided vertically displaceably and the guide pieces are positively connected to the chocks by horizontal guides in the vertical direction. A multiple use of this known roll stand, for example as a reversing stand and / or skin pass mill, is not provided for according to the cited document, rather a separate skin pass mill would generally be used if required. In many cases, however, it can make sense if the same rolling stand is used for different tasks in order to reduce investment costs, especially for processing small lot sizes. In general, this results in proportion Long changeover times of up to eight hours if, for example, during the changeover from sexto operation to duo operation, the intermediate and backup rolls are removed from the roll stand and replaced with a new set of work rolls. Structural adjustments, in particular of the roller drives, are also required, combined with increased expenditure.

Es ist daher Aufgabe der Erfindung, ein Walzgerüst vorzustellen, mit dem die genannten Nachteile vermieden und die Schwierigkeiten ausgeräumt werden können. Insbesondere soll die Vorrichtung auf einfache Weise verschiedenen Benutzungsvarianten angepaßt werden können. Dabei soll ohne Qualitätseinbußen für das Walzprodukt ein störungsfreier Produktionsablauf bei noch vertretbaren Umrüstzeiten gewährleistet werden.It is therefore an object of the invention to present a roll stand with which the disadvantages mentioned can be avoided and the difficulties can be eliminated. In particular, the device should be able to be easily adapted to different use variants. A trouble-free production process with still reasonable changeover times should be guaranteed without loss of quality for the rolled product.

Die Lösung der gestellten Aufgabe gelingt erfindungsgemäß dadurch, daß die Zwischenwalzen mit ihren Lagerungen und die dazugehörigen schlanken Arbeitswalzen gegen dicke Arbeitswalzen austauschbar sind. Auf diese Weise kann das erfindungsgemäße Walzgerüst sowohl als Sexto- Reduziergerüst, als auch vorteilhaft als Duo- Gerüst oder als Quarto-Gerüst verwendet werden. Der Zwischenwalzenbiegeblock kann dabei vorteilhaft als neuer Arbeitswalzenbiegeblock genutzt werden.The object is achieved according to the invention in that the intermediate rolls with their bearings and the associated slim work rolls are interchangeable with thick work rolls. In this way, the roll stand according to the invention can be used both as a six-high reduction stand, and advantageously as a duo stand or as a four-high stand. The intermediate roll bending block can advantageously be used as a new work roll bending block.

In einer vorteilhaften Ausgestaltung der Erfindung sind die gegeneinander austauschbaren Walzen als Schnellwechseleinheit ausgebildet und in den Ständerfenstern angeordnet. Dabei können beispielsweise die Zwischenwalzen und die schlanken Arbeitswalzen mit ihren Lagerungen eine sogenannte Kassette bilden, die als Schnellwechseleinheit auf einfache Weise gegen eine Kassette mit Duowalzen austauschbar ist.In an advantageous embodiment of the invention, the interchangeable rollers are designed as a quick-change unit and are arranged in the stator windows. You can for example, the intermediate rolls and the slim work rolls with their bearings form a so-called cassette, which as a quick-change unit can easily be exchanged for a cassette with duo rolls.

Besonders zweckmäßig besteht zwischen den Ballen der dicken Arbeitswalzen und den Ballen der Stützwalzen bei Verwendung als Duogerüst kein Kontakt. Ein als einzelnes Sexto- Reduziergerüst bzw. Reversiergerüst betriebenes Walzwerk, z. B. zur Herstellung von Edelstahlband mit einer Ausgangsdicke von etwa 8 mm auf eine Enddicke von etwa 0,4 mm, kann so auf einfache Weise als Duo- Dressiergerüst in demselben Walzenständer eingesetzt werden. Dazu werden die Zwischen- und Arbeitswalzen der Sechswalzenanordnung durch eine Duo- Anordnung ersetzt, wobei zwischen den Stützwalzen und den neuen Arbeitswalzen ein Luftspalt verbleibt. Sofern höhere Walzkräfte übertragen werden müssen, kann der Luftspalt zwischen Arbeits- und Stützwalzen einfach auf Null zurückgefahren werden, so daß die Übertragung der Walzkräfte dann direkt zwischen Stützwalzen und Arbeitswalzen erfolgt und nicht wie beim Duo- Gerüst über die Einbaustücke der Stützwalzen auf die Einbaustücke der Arbeitswalzen. Die Arbeitswalzen können kurzzeitig einzeln oder gemeinsam ausgewechselt werden, wobei die Stützwalzen wiederum im Gerüst verbleiben.Particularly useful, there is no contact between the balls of the thick work rolls and the balls of the backup rolls when used as a duo stand. A rolling mill operated as a single six-high reduction stand or reversing stand, e.g. B. for the production of stainless steel strip with an initial thickness of about 8 mm to a final thickness of about 0.4 mm, can be used in a simple manner as a double skin pass mill in the same roll stand. For this purpose, the intermediate and work rolls of the six-roll arrangement are replaced by a duo arrangement, an air gap remaining between the support rolls and the new work rolls. If higher rolling forces have to be transmitted, the air gap between the work and backup rolls can simply be reduced to zero, so that the transfer of the roll forces then takes place directly between the support rolls and work rolls and not, as with the duo stand, via the chocks of the backup rolls onto the chocks of the Work rolls. The work rolls can be replaced individually or together for a short time, the back-up rolls in turn remaining in the stand.

Eine vorteilhafte Ausgestaltung der Erfindung sieht vor, daß bei der Verwendung als Duo- Gerüst die Einbaustücke der Arbeitswalzen mit Abstandsstücken gegenüber den Einbaustücken der Stützwalzen versehen sind, wobei die Einbaustücke der Arbeitswalzen in Führungen eingepaßt sind, die bei der Verwendung als Sexto- Gerüst für die Einbaustücke der Zwischenwalzen als Führungen dienen. Besondere Halte- bzw. Führungsvorrichtungen können somit entfallen, womit Kosten eingespart werden.An advantageous embodiment of the invention provides that the chocks of the work rolls are provided with spacers with respect to the chocks of the backup rolls when used as a duo stand are, the chocks of the work rolls are fitted in guides that serve as guides when used as a sixth scaffold for the chocks of the intermediate rolls. Special holding or guiding devices can thus be omitted, which saves costs.

In einer weiteren Ausgestaltung der Erfindung ist vorgesehen, daß die Abstandsstücke als Platten ausgebildet und mit den Einbaustücken der Arbeitswalzen lösbar verbunden sind. Hierbei handelt es sich um eine besonders einfache und kostengünstige Maßnahme, um im Duo- Dressierbetrieb einen Luftspalt zwischen Arbeits und Stützwalzen zu bilden.In a further embodiment of the invention it is provided that the spacers are designed as plates and are detachably connected to the chocks of the work rolls. This is a particularly simple and inexpensive measure to form an air gap between the work and backup rolls in the dual skin pass mill.

Mit Vorteil bilden jeweils mehrere übereinanderliegende Platten ein Abstandsstück. Die Gesamtdicke der Abstandsstücke wird dabei an den zu erwartenden bzw. zugelassenen Walzenverschleiß angepaßt, so daß bei Betrieb des Walzgerüstes als Duo- ­Walzwerk ein Luftspalt zwischen Arbeits- und Stützwalzen ständig aufrechterhalten bleibt.Advantageously, several plates lying one above the other form a spacer. The total thickness of the spacers is adapted to the expected or approved roll wear, so that an air gap between the work and backup rolls is constantly maintained during operation of the roll stand as a duo rolling mill.

Ferner können besonders vorteilhaft die Abstandsstücke mit den Einbaustücken formschlüssig verbunden sein. Hierbei handelt es sich um eine Maßnahme, mit der ein besonders schneller Wechsel bzw. Einbau der Abstandsstücke sichgestellt werden kann.Furthermore, the spacers can be connected to the chocks in a form-fitting manner. This is a measure with which a particularly quick change or installation of the spacers can be ensured.

Nach einer weiteren Ausgestaltung der Erfindung weisen die Arbeitswalzen eine in Richtung auf die beiden Enden unterschiedlich gekrümmte, insbesondere asymmetrische Ballenkontur auf. Hiermit wird eine optimale Beeinflussung des Walzspaltes in Anpassung einerseits an die Oberflächengegebenheiten des Walzgutes, andererseits an den Walzenverschleiß ermöglicht.According to a further embodiment of the invention, the work rolls have a bale contour which is curved differently in the direction of the two ends, in particular asymmetrical. Hereby a Optimal influence on the roll gap in adaptation to the surface conditions of the rolling stock on the one hand and on the other to the roll wear.

Darüberhinaus können die Stützwalzen eine in Richtung auf die beiden Enden unterschiedlich gekrümmte, insbesondere asymmetrische Ballenkontur aufweisen, wodurch ebenfalls eine Beeinflussung des Walzspaltes gegeben ist. Insbesondere auch in Verbindung mit gleichzeitig konturierten Arbeitswalzen und/oder Zwischenwalzen kann eine besonders genaue Anpassung des Walzspaltes an die sich ändernden Walzbedingungen vorgenommen werden.In addition, the support rolls can have a bend contour which is curved differently in the direction of the two ends, in particular asymmetrical, whereby the roll gap is also influenced. Particularly in connection with simultaneously contoured work rolls and / or intermediate rolls, a particularly precise adaptation of the roll gap to the changing rolling conditions can be carried out.

Weitere Einzelheiten, Merkmale und Vorteile der Erfindung ergeben sich aus der nachstehenden Erläuterung eines in den Zeichnungen schematisch dargestellten Ausführungsbeispieles.Further details, features and advantages of the invention result from the following explanation of an exemplary embodiment shown schematically in the drawings.

Es zeigen :

  • Fig. 1 das erfindungsgemäße Walzgerüst in schematisch vereinfachtem, parallel zur Walzrichtung liegendem Vertikalschnitt, in Verwendung als Sexto-Reduziergerüst,
  • Fig. 2 das erfindungsgemäße Walzgerüst in Verwendung als Duo-Dressiergerüst mit Abstandsstücken,
  • Fig. 3 das erfindungsgemäße Walzgerüst in Verwendung als Quarto-Gerüst.
Show it :
  • 1 shows the rolling stand according to the invention in a schematically simplified vertical section lying parallel to the rolling direction, in use as a six-high reducing stand,
  • 2 the roll stand according to the invention in use as a double skin pass stand with spacers,
  • Fig. 3 shows the roll stand according to the invention in use as a four-high stand.

Gemäß Figur 1 weist das dargestellte Sexto- Walzgerüst in üblicher Weise zwei mit Abstand nebeneinander angeordnete Walzenständer (1) auf, von denen nur einer ausschnittweise gezeigt ist. Die Walzenständer (1) besitzen je ein Ständerfenster (2), in denen zwei schlanke Arbeitswalzen (3, 4) aufgenommen werden, die von den Stützarmen (5, 6; 7, 8) in bekannter Weise beidseitig abgestützt werden. Die im Gerüst (1) bzw. im Ständerfenster (2) ebenfalls befindlichen Stützwalzen (10, 11) sind an ihren Enden bekanntermaßen in Einbaustücken (12, 13) gelagert. Zwischen den schlanken Arbeitswalzen (3, 4) und den Stützwalzen (10, 11) befinden sich Zwischenwalzen (14, 15), die wiederum von ihren Einbaustücken (16, 17) gehalten werden.According to FIG. 1, the six-high mill stand shown has in the usual way two roll stands (1) arranged at a distance from one another, only one of which is shown in detail. The roll stands (1) each have a stand window (2), in which two slim work rolls (3, 4) are received, which are supported on both sides by the support arms (5, 6; 7, 8) in a known manner. The support rollers (10, 11) also located in the frame (1) or in the stand window (2) are, as is known, mounted in chocks (12, 13) at their ends. Between the slender work rolls (3, 4) and the support rolls (10, 11) there are intermediate rolls (14, 15) which in turn are held by their chocks (16, 17).

Im Einbaubereich der Zwischenwalzen (14, 15) befinden sich in den Ständerfenstern (2) der beiden Walzenständer (1) ständerfeste Blöcke mit Führungsstücken (20, 21; 22, 23), die in den ständerfesten Blöcken vertikal verschiebbar geführt werden, wobei die Einaustücke (16, 17) für die beiden Zwischenwalzen (14, 15) in vertikaler Richtung formschlüssig, jedoch für den Wechselvorgang horizontal verschiebbar mit den Führungsstücken (20 - ­23) verbunden sind. Den Einbaustücken (16, 17) der oberen und unteren Zwischenwalzen (14, 15) sind im Bereich der ständerfesten Blöcke jeweils Verstellmittel (24 - 27) in Form von hydraulisch beaufschlagbaren Kolben-Zylinder-Einheiten zugeordnet. Diese Verstellmittel bzw. Biegevorrichtungen (24 - 27) für die Zwischenwalzen (14, 15) sind jeweils in die zugeordneten Führungsstücke (20 - 23) eingebaut. An den Einbaustücken (12) der oberen Stützwalze (10) greift die Anstellvorrichtung (28) des Walzgerüstes an.In the installation area of the intermediate rollers (14, 15) there are stator-fixed blocks with guide pieces (20, 21; 22, 23) in the stator windows (2) of the two roller stands (1), which are guided vertically displaceably in the stator-fixed blocks, the insertion pieces (16, 17) for the two intermediate rolls (14, 15) are positively connected in the vertical direction, but are horizontally displaceable with the guide pieces (20 - 23) for the changing process. The chocks (16, 17) of the upper and lower intermediate rollers (14, 15) are each assigned adjusting means (24 - 27) in the form of hydraulically actuated piston-cylinder units in the area of the blocks fixed to the stand. These adjustment means or bending devices (24-27) for the intermediate rollers (14, 15) are each installed in the associated guide pieces (20-23). At the chocks (12) of the upper support roller (10) are attacked by the adjusting device (28) of the roll stand.

Bei Betrieb des Walzgerüstes als Sexto-Reversiergerüst werden die Walzkräfte in bekannter Weise zunächst über die Einbaustücke (12, 13) auf die Stützwalzen (10, 11), dann an den Berührungsstellen der Stützwalzen (10, 11) mit den Zwischenwalzen (14, 15) auf diese und von dort auf die Arbeitswalzen (3, 4) bzw. das in der Walzebene (29) gewalzte Walzgut übertragen.When the roll stand is operated as a six-high reversing stand, the rolling forces are first transferred in a known manner via the chocks (12, 13) onto the support rolls (10, 11), then at the points of contact of the support rolls (10, 11) with the intermediate rolls (14, 15 ) to this and from there to the work rolls (3, 4) or the rolling stock rolled in the rolling plane (29).

Figur 2 zeigt die erfindungsgemäße Verwendung des Walzgerüstes als Duo- Dressiergerüst, wobei die Einbaustücke (30, 31) der neuen dicken Arbeitswalzen (33, 34) mit Abstandsstücken (35, 36) gegenüber den Einbaustücken (12, 13) der Stützwalzen (10, 11) versehen sind, so daß zwischen den Ballen der Stützwalzen (10, 11) und den Ballen der dicken Arbeitswalzen (33, 34) kein Kontakt besteht. Die Einbaustücke (30, 31) der Arbeitswalzen (33, 34) in die Führungsstücke (20 - 23) eingepaßt, die für die Einbaustücke der Zwischenwalzen bei der Verwendung als Sexto- Gerüst gemäß Figur 1 als Führungen dienen (vgl. Fig. 1, Einbaustücke 16, 17; Zwischenwalzen 14, 15). Der Zwischenwalzenbiegeblock mit den Verstellmitteln (24 - 27) kann vorteilhaft als neuer Arbeitswalzenbiegeblock für die Bombierung der Arbeitswalzen (33, 34) verwendet werden. Die Abstandsstücke (35, 36) sind als Platten ausgebildet und mit den Einbaustücken (30, 31) der Arbeitswalzen (33, 34) lösbar verbunden, wobei jeweils mehrere übereinanderliegende Platten ein Abstandsstück (35, 36) bilden können.FIG. 2 shows the use of the roll stand as a double skin pass stand according to the invention, the chocks (30, 31) of the new thick work rolls (33, 34) with spacers (35, 36) with respect to the chocks (12, 13) of the support rolls (10, 11) are provided so that there is no contact between the bales of the support rollers (10, 11) and the bales of the thick work rollers (33, 34). The chocks (30, 31) of the work rolls (33, 34) are fitted into the guide pieces (20 - 23) which serve as guides for the chocks of the intermediate rolls when used as a sex scaffold according to FIG. 1 (see FIG. 1, Chocks 16, 17; intermediate rolls 14, 15). The intermediate roll bending block with the adjusting means (24-27) can advantageously be used as a new work roll bending block for crowning the work rolls (33, 34). The spacers (35, 36) are designed as plates and are detachably connected to the chocks (30, 31) of the work rolls (33, 34), a plurality of plates one above the other forming a spacer (35, 36) can form.

Zur Umrüstung von Sexto- auf Duobetrieb werden die Zwischenwalzen mit ihren Lagerungen sowie die schlanken Arbeitswalzen (vgl. Fig. 1, Ziffern 14, 15; 16, 17; 3, 4) als Schnellwechseleinheit aus den Ständerfenstern (2) herausgefahren, wobei die Stützarme (5 - 8) hydraulisch so weit wie möglich eingefahren werden, um Raum für die dicken Arbeitswalzen (33, 34) und deren Einbaustücke (30, 31) zu schaffen. Die Einbaustücke (12, 13) mit den Stützwalzen (10, 11) werden über die Verstellmittel (24 - 27) auseinander bewegt und die neuen Arbeitswalzen (33, 34) zusammen mit den Einbaustücken (30, 31) und den damit verbundenen Abstandsstücken (35, 36) in die Ständerfenster (2) eingefahren. Die Verstellmittel (24 - 27) werden nun gelöst. Die Übertragung der Walzkräfte erfolgt über die Einbaustücke (12, 13), die Abstandsstücke (35, 36), die Einbaustücke (30, 31) auf die dicken Arbeitswalzen (33, 34).To convert from sexto to duo operation, the intermediate rolls with their bearings and the slim work rolls (cf. (5 - 8) are retracted hydraulically as far as possible to create space for the thick work rolls (33, 34) and their chocks (30, 31). The chocks (12, 13) with the support rollers (10, 11) are moved apart via the adjusting means (24 - 27) and the new work rollers (33, 34) together with the chocks (30, 31) and the spacers ( 35, 36) moved into the stand window (2). The adjustment means (24 - 27) are now released. The rolling forces are transmitted via the chocks (12, 13), the spacers (35, 36), the chocks (30, 31) to the thick work rolls (33, 34).

Gemäß Figur 3 kann bei Entfernung der Abstandsstücke (vgl. Fig. 2, Ziffern 35, 36) das Duo- Dressiergerüst auch als Quartogerüst verwendet werden, insbesondere bei der Übertragung von Walzkräften von mehr als 2000 t. Die Einleitung der Walzkräfte geschieht dann direkt zwischen Stützwalzen (10, 11) und Arbeitswalzen (33, 34), d. h. ohne Umweg über die Einbaustücke (12, 13) und (30, 31).According to FIG. 3, when the spacers are removed (cf. FIG. 2, numbers 35, 36), the dual skin pass mill can also be used as a four-high stand, in particular when transmitting rolling forces of more than 2000 t. The rolling forces are then introduced directly between support rolls (10, 11) and work rolls (33, 34), i. H. without detour via the chocks (12, 13) and (30, 31).

Die erfindungsgemäßen Maßnahmen sind nicht auf das in den Zeichnungsfiguren dargestellte Ausführungsbeispiel beschränkt. So können beispielsweise, ohne den Rahmen der Erfindung zu verlassen, die Abstandsstücke beliebige Formen aufweisen und nicht nur horizontal sondern auch vertikal unterteilt sein. Die jeweilige konstruktive Ausgestaltung ist in Anpassung an die Verwendung dem Fachmann anheimgestellt.The measures according to the invention are not based on the exemplary embodiment shown in the drawing figures limited. For example, without leaving the scope of the invention, the spacers can have any shape and can be divided not only horizontally but also vertically. The respective structural design is left to the person skilled in the art in adaptation to the use.

Claims (10)

1. Walzgerüst zur Herstellung eines Walzgutes, insbesondere eines Walzbandes, mit Arbeitswalzen, Stützwalzen oder Zwischenwalzen und Stützwalzen, dadurch gekennzeichnet, daß die Zwischenwalzen (14, 15) mit ihren Lagerungen und die dazugehörigen schlanken Arbeitswalzen (3, 4) gegen dicke Arbeitswalzen (33, 34) austauschbar sind.1. Roll stand for the production of a rolling stock, in particular a rolled strip, with work rolls, support rolls or intermediate rolls and support rolls, characterized in that the intermediate rolls (14, 15) with their bearings and the associated slim work rolls (3, 4) against thick work rolls (33 , 34) are interchangeable. 2. Walzgerüst nach Anspruch 1, dadurch gekennzeichnet, daß die gegeneinander austauschbaren Walzen (14, 15; 3, 4; 33, 34) als Schnellwechseleinheit ausgebildet und in den Ständerfenstern (2) angeordnet sind.2. Roll stand according to claim 1, characterized in that the mutually interchangeable rollers (14, 15; 3, 4; 33, 34) are designed as a quick-change unit and are arranged in the stator windows (2). 3. Walzgerüst nach Anspruch 1 oder 2, dadurch gekennzeichnet, daß zwischen den Ballen der dicken Arbeitswalzen (33, 34) und den Ballen der Stützwalzen (10, 11) bei Verwendung als Duogerüst kein Kontakt besteht.3. Roll stand according to claim 1 or 2, characterized in that there is no contact between the bales of the thick work rolls (33, 34) and the bales of the backup rolls (10, 11) when used as a duo stand. 4. Walzgerüst nach Anspruch 3, dadurch gekennzeichnet, daß bei der Verwendung als Duo- Gerüst die Einbaustücke (30, 31) der Arbeitswalzen (33, 34) mit Abstandsstücken (35, 36) gegenüber den Einbaustücken (12, 13) der Stützwalzen (10, 11) versehen sind, wobei die Einbaustücke (30, 31) der Arbeitswalzen (33, 34) in die Führungen (20 - 23) eingepaßt sind, die bei der Verwendung als Sexto- Gerüst für die Einbaustücke (16, 17) der Zwischenwalzen (14, 15) als Führung dienen.4. Roll stand according to claim 3, characterized in that when used as a duo stand, the chocks (30, 31) of the work rolls (33, 34) with spacers (35, 36) relative to the chocks (12, 13) of the support rolls ( 10, 11) are provided, the chocks (30, 31) of the work rolls (33, 34) being fitted into the guides (20-23) which, when used as a sex scaffold for the chocks (16, 17) Intermediate rollers (14, 15) serve as a guide. 5. Walzgerüst nach Anspruch 4, dadurch gekennzeichnet, daß die Abstandsstücke (35, 36) als Platten ausgebildet und mit den Einbaustücken (30, 31) der Arbeitswalzen (33, 34) lösbar verbunden sind.5. Roll stand according to claim 4, characterized in that the spacers (35, 36) are designed as plates and are releasably connected to the chocks (30, 31) of the work rolls (33, 34). 6. Walzgerüst nach Anspruch 4 oder 5, dadurch gekennzeichnet, daß jeweils mehrere übereinanderliegende Platten ein Abstandsstück (35, 36) bilden.6. Roll stand according to claim 4 or 5, characterized in that in each case a plurality of superposed plates form a spacer (35, 36). 7. Walzgerüst nach einem der Ansprüche 4 bis 6, dadurch gekennzeichnet, daß die Abstandsstücke (35, 36) mit den Einbaustücken (30, 31) formschlüssig verbunden sind.7. Roll stand according to one of claims 4 to 6, characterized in that the spacers (35, 36) with the chocks (30, 31) are positively connected. 8. Walzgerüst nach einem der Ansprüche 1 bis 7, dadurch gekennzeichnet, daß die Arbeitswalzen (33, 34) eine in Richtung auf die beiden Enden unterschiedlich gekrümmte, insbesondere asymmetrische Ballenkontur aufweisen.8. Roll stand according to one of claims 1 to 7, characterized in that the work rolls (33, 34) have a differently curved, in particular asymmetrical bale contour in the direction of the two ends. 9. Walzgerüst nach einem der Ansprüche 1 bis 8, dadurch gekennzeichnet, daß die Stützwalzen (10, 11) eine in Richtung auf die beiden Enden unterschiedlich gekrümmte, insbesondere asymmetrische Ballenkontur aufweisen.9. Roll stand according to one of claims 1 to 8, characterized in that the support rollers (10, 11) have a differently curved, in particular asymmetrical bale contour in the direction of the two ends. 10. Walzgerüst nach einem der Ansprüche 1 bis 9, dadurch gekennzeichnet, daß die Zwischenwalzen (14, 15) und/oder die schlanken Arbeitswalzen (3, 4) eine in Richtung auf die beiden Enden jeder Walze unterschiedlich gekrümmte, insbesondere asymmetrische Ballenkontur aufweisen.10. Roll stand according to one of claims 1 to 9, characterized in that the intermediate rolls (14, 15) and / or the slim work rolls (3, 4) have a differently curved, in particular asymmetrical bale contour in the direction of the two ends of each roll.
EP88101992A 1987-03-10 1988-02-11 Rolling mill stand Expired - Lifetime EP0281782B1 (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
AT88101992T ATE72147T1 (en) 1987-03-10 1988-02-11 ROLLER ROLLER.

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE19873707560 DE3707560A1 (en) 1987-03-10 1987-03-10 ROLLING MILLS
DE3707560 1987-03-10

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EP0281782A1 true EP0281782A1 (en) 1988-09-14
EP0281782B1 EP0281782B1 (en) 1992-01-29

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EP (1) EP0281782B1 (en)
JP (1) JP2509659B2 (en)
AT (1) ATE72147T1 (en)
DE (2) DE3707560A1 (en)

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FR2648372A1 (en) * 1989-06-19 1990-12-21 Clecim Sa Method for changing the configuration of a rolling mill and rolling-mill installation for implementing the method
US5590557A (en) * 1993-11-26 1997-01-07 Sms Schloemann-Siemag Aktiengesellschaft Roll stand
US5613392A (en) * 1993-11-06 1997-03-25 Sms Schloemann-Siemag Aktiengesellschaft Horizontal/vertical roll stand
CN102886380A (en) * 2011-07-20 2013-01-23 宝山钢铁股份有限公司 Skin pass rolling method of negative roller for soft steel
WO2020229159A1 (en) * 2019-05-16 2020-11-19 Primetals Technologies Austria GmbH Hot rolling with flexible configuration of the roll stands

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US5622073A (en) * 1991-05-16 1997-04-22 Kawasaki Steel Corporation Six high rolling mill
DE4417274C2 (en) * 1994-05-18 2003-04-17 Sms Demag Ag Method for operating a roll stand
DE10150146A1 (en) * 2001-10-11 2003-04-17 Sms Demag Ag Guiding device used in rolling mills comprises guide plates having a support connected to a linear adjusting part of a mechanically or hydraulically driven sliding device on a bearing body of a vertical roller
FR2846579B1 (en) * 2002-11-05 2006-05-05 Vai Clecim METHOD FOR EXTENDING THE RANGE OF PRODUCTION OF A PLANT ROLLING PLANT FOR METAL PRODUCTS AND INSTALLATION FOR CARRYING OUT THE METHOD
FR2851942B1 (en) * 2003-03-05 2006-04-28 METHOD FOR CHANGING THE CONFIGURATION OF A ROLLING MILL AND IMPROVED ROLLING MILL FOR IMPLEMENTING THE METHOD
US20040177462A1 (en) 2003-03-14 2004-09-16 The Gillette Company Toothbrush head
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Cited By (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR2648372A1 (en) * 1989-06-19 1990-12-21 Clecim Sa Method for changing the configuration of a rolling mill and rolling-mill installation for implementing the method
US5613392A (en) * 1993-11-06 1997-03-25 Sms Schloemann-Siemag Aktiengesellschaft Horizontal/vertical roll stand
US5590557A (en) * 1993-11-26 1997-01-07 Sms Schloemann-Siemag Aktiengesellschaft Roll stand
CN102886380A (en) * 2011-07-20 2013-01-23 宝山钢铁股份有限公司 Skin pass rolling method of negative roller for soft steel
WO2020229159A1 (en) * 2019-05-16 2020-11-19 Primetals Technologies Austria GmbH Hot rolling with flexible configuration of the roll stands

Also Published As

Publication number Publication date
DE3868087D1 (en) 1992-03-12
JP2509659B2 (en) 1996-06-26
ATE72147T1 (en) 1992-02-15
US4841761A (en) 1989-06-27
DE3707560A1 (en) 1988-09-22
JPS63235008A (en) 1988-09-30
EP0281782B1 (en) 1992-01-29

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