EP1343597B1 - Roll stand for hot-rolling or cold-rolling metallic strips - Google Patents
Roll stand for hot-rolling or cold-rolling metallic strips Download PDFInfo
- Publication number
- EP1343597B1 EP1343597B1 EP01990469A EP01990469A EP1343597B1 EP 1343597 B1 EP1343597 B1 EP 1343597B1 EP 01990469 A EP01990469 A EP 01990469A EP 01990469 A EP01990469 A EP 01990469A EP 1343597 B1 EP1343597 B1 EP 1343597B1
- Authority
- EP
- European Patent Office
- Prior art keywords
- piston
- roll
- roll stand
- chocks
- stand according
- 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.)
- Expired - Lifetime
Links
- 238000005098 hot rolling Methods 0.000 title claims abstract description 8
- 238000005097 cold rolling Methods 0.000 title claims abstract description 7
- 238000005096 rolling process Methods 0.000 claims abstract description 13
- 238000005452 bending Methods 0.000 claims description 17
- 239000002184 metal Substances 0.000 claims description 6
- 229910000831 Steel Inorganic materials 0.000 claims description 5
- 239000010959 steel Substances 0.000 claims description 5
- 239000000463 material Substances 0.000 claims description 4
- 239000004809 Teflon Substances 0.000 claims description 3
- 229920006362 TeflonĀ® Polymers 0.000 claims description 3
- 230000001105 regulatory effect Effects 0.000 claims 1
- 229920002994 synthetic fiber Polymers 0.000 claims 1
- 230000008030 elimination Effects 0.000 description 3
- 238000003379 elimination reaction Methods 0.000 description 3
- 238000000034 method Methods 0.000 description 3
- 230000001133 acceleration Effects 0.000 description 2
- 239000004033 plastic Substances 0.000 description 2
- 238000010438 heat treatment Methods 0.000 description 1
- 238000010079 rubber tapping 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
- 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
- B21B31/16—Adjusting or positioning rolls
- B21B31/18—Adjusting or positioning rolls by moving rolls axially
-
- 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
- B21B31/203—Balancing 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
- B21B31/16—Adjusting or positioning rolls
- B21B31/20—Adjusting or positioning rolls by moving rolls perpendicularly to roll axis
- B21B2031/206—Horizontal offset of work rolls
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B21—MECHANICAL METAL-WORKING WITHOUT ESSENTIALLY REMOVING MATERIAL; PUNCHING METAL
- B21B—ROLLING OF METAL
- B21B29/00—Counter-pressure devices acting on rolls to inhibit deflection of same under load, e.g. backing rolls ; Roll bending devices, e.g. hydraulic actuators acting on roll shaft ends
-
- 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
- B21B31/32—Adjusting or positioning rolls by moving rolls perpendicularly to roll axis by liquid pressure, e.g. hydromechanical adjusting
Definitions
- the invention relates to a roll stand for hot or cold rolling of metallic Tape material e.g. of different steel grades, with support and work rolls, which are each rotatably supported in chocks, the chocks on both sides in guides of the stand frame for adjustment of the roll gap and additionally arranged in the stand frame horizontal piston-cylinder units at least on one side to adjust the play are adjustable.
- a corresponding roll stand is according to the preamble of claim 1 e.g. known from DE-A 199 11638.
- the invention has for its object the game of the work roll chocks to be completely eliminated in their vertical guidance during rolling and to do without a hydraulic connection to the chocks.
- the work roll chocks at least one stand side by means of that in the stand frame arranged piston-cylinder unit and by means of one at each Piston face arranged support element guided against the other side of the stator and their guidance without movement play when the vertical roller actuator is shut down can be pressed on and with the vertical roller adjustment drive switched on is solvable. This will make the game while rolling the chocks in the guides of the stand windows are completely eliminated, which favors the result of the regulation by the AGC process and the rolled profile is adhered to more precisely.
- the support element in each case from a round plate made of metal with guide bands embedded in the circumference made of plastic and that the circular blank is guided in the stand frame.
- Ronde absorbs transverse forces that act on the stand frame act and ensures a rigid structure of the game elimination during rolling.
- the round blank can be retracted when changing the work carriage.
- Another embodiment provides that the round plate on the piston rod of the Piston-cylinder unit is attached. As a result, the circular blank guides all movements the piston rod with.
- a sensitive movement of the piston can also be achieved by acting on both sides of the piston of the piston-cylinder unit is.
- the supply of pressure medium is designed in such a way that the piston-cylinder unit can be supplied by means of pressure medium through channels in the stand frame is. No hose lines need to be loosened when changing the roller and be reconnected.
- a design which is advantageous for the movements of the round blank also consists in that the round blank is made of gunmetal and that the recessed on the circumference Guide bands are made of Teflon.
- the process of eliminating the game and approving a movement game when setting the Rollspakt i.e. when vertically adjusting the chocks, can advantageously be influenced in that the hydraulic pressure in the Piston-cylinder unit at different pressures for adjusting the play or Elimination of play for the chock in the guide of the respective stand side is adjustable and that for a vertical adjustment of the chocks Control can be converted to signals from an automatic gage control system (AGC) is.
- AGC automatic gage control system
- the controller for the round blank recognizes which one When the AGC control requires a vertical adjustment of the chock and can adjust the hydraulic pressure in the horizontal in a short time Reduce the piston-cylinder unit.
- a standard link for profile control can also be used can be used completely unhindered via the work roll bend.
- individual piston-cylinder units that run at a distance from the bending cylinder are arranged to attack a piston head that is connected to the round blank is provided.
- a May-West bending block can be used.
- CVC control can also be performed by axially shifting profiled sections Rollers are used.
- Ronde with its central longitudinal axis arranged eccentrically to the work roll axis is.
- the invention also be designed in such a way that the support element consists of a sliding shoe exists, which is shaped like a sled runner with a corresponding runner width and engages in the guide of the chocks.
- the roll stand according to FIG. 1, a four-high roll stand, is used for hot or Cold rolling of metallic strip material 1, e.g. of different steel grades, and has backup rolls 2, 3 and work rolls 4, 5, each in chocks 6, 7 are pivoted.
- the chocks 6, 7 for the support rollers 2, 3 or for the work rolls 4, 5 are on both sides in guides 8 of a stand frame 9 slidably guided to adjust the nip 10.
- horizontal piston-cylinder units 11 one-sided (see FIG. 2) for adjusting the play of the chocks 6, 7 for the work rolls 4, 5 provided.
- the upper support roller 2 is by means of hydraulic actuating cylinders 12, which accordingly an AGC control, equipped.
- the lower chocks 7 rest in the stand frame 9 on load cells 13.
- the work roll chocks 6, 7 for at least one stator side 9a are by means of the in the Stand frame 9 arranged, horizontal piston-cylinder units 11 and by means of a support element arranged on the piston face side 11 a 14, guided on all sides, against the other side of the stand 9b and its Guide 8 without movement with the vertical roller actuator set, from the hydraulic vertical actuators 12 exists, pressed and when the vertical roller actuator is switched on easily solved, so that a sliding adjustment of the chocks 6, 7 take place can.
- the support element 14 consists of a cylindrical body, short as Circular blank 14a (FIG. 3), the circular blank 14a being made of metal, e.g. made of gunmetal and on the circumference 14b guide bands 15 made of plastic, e.g. made of Teflon.
- the blank 14a is on a piston rod 16 of the horizontal piston-cylinder unit 11 attached by means of a screw 17.
- the piston 18 of the horizontal As can be seen, the piston-cylinder unit 11 is double-sided with pressure medium acted upon.
- the pressure medium for the piston-cylinder unit 11 is fed through channels 19 and 20 to the two piston sides. Channels 19 and 20 run within the stand frame 9.
- the channels 19 and 20 open in grooves 22 running around the cylinder 21 or around the piston rod 16 23.
- the circular outer shape of the round blank 14a is visible in FIG.
- the control of the hydraulic pressure in the piston-cylinder unit 11 to the different pressures Adjustment of play when actuating the vertical roller adjustment drive or Eliminate play for chock 6 or 7 by operating the horizontal Piston-cylinder unit 11 in the guide 8 and the respective stator side 9a or 9b adjusted and controllable accordingly, for what with a vertical adjustment the chocks 6 or 7 with the support rollers 2 or 3 the control is switched to signals of an automatic gage control system.
- FIG. 5 Another embodiment (Fig. 5) provides a connection to one at a Roll pin 4a or 5a, perpendicular to the roll axis 24 Bending cylinder 25 before.
- the blank 14a is the support member 14 in the piston-cylinder unit 11 from several smaller piston-cylinder units 27 consisting of a distance 26 (see FIG. 6) to Bending cylinders 25 run, formed.
- the piston head 11b is with the round blank 14a Mistake.
- the relatively large piston head 11b and the relatively small piston-cylinder units 27 can expediently by means of Allen screws 33 be connected so that the respective piston head can also be withdrawn.
- Polygonal corners 28 are symmetrical to the axis 25a of the bending cylinder 25 the smaller piston-cylinder units 27 are arranged for the round blank 14a (FIG. 7).
- the round blank 14a with its central longitudinal axis 29 is eccentric to the work roll axis 30 arranged.
Abstract
Description
Die Erfindung betrifft ein WalzgerĆ¼st fĆ¼r das Warm- oder Kaltwalzen von metallischem
Bandmaterial z.B. von verschiedenen StahlgĆ¼ten, mit StĆ¼tz- und Arbeitswalzen,
die jeweils in EinbaustĆ¼cken drehgelagert sind, wobei die EinbaustĆ¼cke
jeweils beidseitig in FĆ¼hrungen des StƤnderrahmens zur Einstellung
des Walzspaltes und zusƤtzlich mittels in den StƤnderrahmen angeordneten
horizontalen Kolben-Zylinder-Einheiten zumindest einseitig zur Spieleinstellung
verstellbar sind. Ein entsprechendes WalzgerĆ¼st ist gemƤĆ
dem Oberbegriff von Anspruch 1 z.B. aus DE-A 199 11638 bekannt.The invention relates to a roll stand for hot or cold rolling of metallic
Tape material e.g. of different steel grades, with support and work rolls,
which are each rotatably supported in chocks, the chocks
on both sides in guides of the stand frame for adjustment
of the roll gap and additionally arranged in the stand frame
horizontal piston-cylinder units at least on one side to adjust the play
are adjustable. A corresponding roll stand is according to
the preamble of
Die Arbeitswalzen von BandstraĆen werden wegen VerschleiĆes jeweils nach 4 - 6 Stunden gegen neue Arbeitswalzen ausgewechselt. Die Prozedur des Arbeitswalzen-Wechsels erfolgt derzeit in einem automatischen Zyklus mittels einer Wechselvorrichtung. FĆ¼r ein freies Spiel der EinbaustĆ¼cke beim vertikalen Verstellen zur Walzspaltregelung, ist zwischen StƤnder und EinbaustĆ¼ck ein Spalt von wenigen Millimetern vorgesehen. Dieser Spalt ist beim Walzen nachteilig.Because of wear, the work rolls of belt mills are replaced every 4 - Replaced with new work rolls for 6 hours. The procedure of changing the work roll is currently in an automatic cycle using a changing device. For a free play of the chocks in the vertical Adjustment for roll gap control is between the stand and chock A gap of a few millimeters is provided. This gap is disadvantageous when rolling.
Beim Warmwalzen einzelner Brammen in einer WarmbandstraĆe treten wƤhrend des Anstechvorgangs groĆe StƶĆe mit enormen Beschleunigungen auf. Dabei werden die EinbaustĆ¼cke gegen die StƤnderfĆ¼hrung geschleudert und diese wird hoch belastet. Die StoĆbelastung verschleiĆt die FĆ¼hrungsbahn sehr schnell, das FĆ¼hrungsspiel wird grƶĆer und die BeschleunigungskrƤfte werden immer hƶher. Man hat schon versucht, mit gehƤrteten FĆ¼hrungsleisten und einem nachgiebigen , weichen Stahl diese Probleme zu mindern.When hot rolling individual slabs in a hot strip mill, step during large impacts with enormous accelerations. The chocks are thrown against the stand guide and this is heavily burdened. The impact load wears out the guideway very much fast, the leadership game gets bigger and the acceleration forces become higher and higher. You have already tried, with hardened guide rails and one compliant, soft steel to alleviate these problems.
Beim Kaltwalzen wird angestrebt, die Arbeitswalzen zur Stabilisierung um einige Millimeter ( ca. 4 bis 10 mm) vor der Mitte des WalzgerĆ¼stes, in Walzrichtung gesehen, zu positionieren. Besonders gĆ¼nstig wƤre eine Bauart, bei der der Mittenversatz in der GrƶĆe einstellbar wƤre, um damit die Profilregelung zu unterstĆ¼tzen. Die Einstellung Ć¼ber Keilleisten bei Beginn des Walzvorgangs ist jedoch ebenfalls nachteilig, wenn auch die Einstellung in ZeitabstƤnden wiederholt wird, weil im Hinblick auf die Forderung nach Verstellbarkeit der Arbeitswalzen das Spiel nicht vollstƤndig beseitigt werden kann. Ein solches Spiel ist andererseits notwendig, weil sich beim Warmwalzen das EinbaustĆ¼ck erwƤrmt und ausdehnt, jedoch der WalzenstƤnder kalt bleibt. Dadurch verringert sich zwar das Spiel. Diese Verringerung des Spiels nach ErwƤrmen kann aber dann wiederum zum Klemmen der Vertikalverstellung fĆ¼hren.Cold rolling strives to stabilize the work rolls by a few Millimeters (approx. 4 to 10 mm) in front of the center of the roll stand, in the rolling direction seen to position. A design in which the Center offset in size would be adjustable to support the profile control. The setting via wedge bars at the start of the rolling process is however also disadvantageous, even if the setting is repeated at intervals is because of the need for work roll adjustability the game cannot be completely eliminated. Such a game is on the other hand, necessary because the chuck heats up during hot rolling and expands, but the roller stand remains cold. This will decrease the game though. This reduction in the game after heating can then again cause the vertical adjustment to jam.
In allen FƤllen ist eine ungenau definierte Position der Arbeitswalzen-EinbaustĆ¼cke im GerĆ¼st sowohl beim Kaltwalzen als auch beim Warmwalzen nachteilig. AuĆerdem besteht die Forderung, dass die vertikale Beweglichkeit der EinbaustĆ¼cke in der StƤnderfĆ¼hrung gegeben sein muss. Dabei ist zu berĆ¼cksichtigen, dass die modernen WalzstraĆen mit der sog. AGC-Regelung (Automatic-Gage-Control) arbeiten. Aufgrund dieser AGC-Regelung wird kurz nach dem Anstich gemessen, ob der Walzspalt die gewĆ¼nschte GrƶĆe aufweist. Bei Abweichungen wird Ć¼ber die hydraulische Anstellung im GerĆ¼st unter Walzkraft nachgeregelt. Im allgemeinen sorgt die AGC-Regelung dafĆ¼r, dass unabhƤngig von Temperaturschwankungen und Verformungskraft-Ćnderungen das Metallband (Stahlband) immer mit der exakt gleichen Dicke gewalzt wird. FĆ¼r eine Walzung mit konstantem Profil des Metallbandes ist ein FĆ¼hrungsspalt zwischen EinbaustĆ¼ck und GerĆ¼ststƤnder sehr ungĆ¼nstig, weil durch die zufƤllige Position der Arbeitswalzen im GerĆ¼st eine ungewollte SchrƤnkung der Arbeitswalzen unter sich auftreten kann, die das angestrebte Profil verfƤlscht.In all cases there is an imprecisely defined position of the work roll chocks in the stand both during cold rolling and hot rolling disadvantageous. There is also a requirement that vertical mobility the chocks in the stand guide must be given. It must be taken into account that the modern rolling mills with the so-called AGC regulation (Automatic Gage Control) work. Because of this AGC regulation will be short after tapping, measured whether the roll gap has the desired size. In the event of deviations, the hydraulic adjustment in the stand under rolling force readjusted. In general, the AGC regulation ensures that independent of temperature fluctuations and changes in deformation force Metal strip (steel strip) is always rolled with the exact same thickness. For a rolling with a constant profile of the metal strip is a guide gap between chock and scaffold stand very unfavorable because of the random Position of the work rolls in the stand an unwanted setting of the work rolls can occur among themselves, which falsifies the desired profile.
Es ist eine Vorrichtung zur Lagekorrektur der in den StƤnderfenstem von WalzgerĆ¼sten gefĆ¼hrten LagereinbaustĆ¼cken der Walzen bekannt (DE 44 34 797 A1), die aus hydraulisch beaufschlagten ZylinderdruckstƶĆeln besteht, die in Zylinderausnehmungen gefĆ¼hrt sind, die in den LagereinbaustĆ¼cken gefĆ¼hrt sind. Die ZylinderdruckstƶĆel kƶnnen gegen die eine oder beide der FĆ¼hrungsflƤchen der StƤnderfenster des WalzgerĆ¼stes bewegt werden. Dadurch kann zwar das FĆ¼hrungsspiel der EinbaustĆ¼cke dem jeweiligen Verlauf des Walzprozesses angepasst werden, es kann jedoch nicht gƤnzlich beseitigt werden. AuĆerdem ist das-Lƶsen und WiederanschlieĆen der Hydraulikverbindung beim Walzenwechsel zeitaufwendig und mit erheblichen Kosten verbunden, wobei ca. 80 Walzen pro FertigstraĆe im Wechselprogramm enthalten sind.It is a device for correcting the position of the stand windows of rolling stands guided bearing chocks of the rollers known (DE 44 34 797 A1), which consists of hydraulically actuated cylinder pressure tappets, which in Cylinder recesses are guided, which are guided in the bearing chocks are. The cylinder pressure tappets can be against one or both of the guide surfaces the stand window of the roll stand can be moved. This can the guiding game of the chocks the respective course of the rolling process adjusted, but it cannot be completely eliminated. Moreover is the disconnection and reconnection of the hydraulic connection at Roll change time-consuming and associated with considerable costs, whereby Approx. 80 rollers per finishing train are included in the change program.
Es ist auĆerdem eine Vorrichtung zur regelbaren Beeinflussung der ReibkrƤfte zwischen den FĆ¼hrungsflƤchen und AnlageflƤchen von in den StƤnderfenstem von WalzgerĆ¼sten gefĆ¼hrten LagereinbaustĆ¼cken der Walzen bekannt (DE 199 11 638 A1), wobei als FĆ¼hrungsflƤchen tragende, ebene, rĆ¼ckseitig druckbeaufschlagbare TrƤgerplatten angeordnet sind, die in diesen senkrecht zu den FĆ¼hrungsflƤchen bzw. AnlageflƤchen verschiebbar gefĆ¼hrt sind. Dadurch werden jedoch sehr groĆe FĆ¼hrungsflƤchen geschaffen und ein Restspiel kann auch dadurch nicht beseitigt werden.It is also a device for controllably influencing the frictional forces between the guide surfaces and contact surfaces of in the stand windows Bearing chocks of the rollers guided by roll stands are known (DE 199 11 638 A1), with plane, load-bearing surfaces on the back that can be pressurized as guide surfaces Carrier plates are arranged in this perpendicular to the guide surfaces or contact surfaces are slidably guided. This will however, very large guide surfaces are created and a residual game can also not be eliminated.
Der Erfindung liegt die Aufgabe zugrunde, das Spiel der Arbeitswalzen-EinbaustĆ¼cke in ihrer vertikalen FĆ¼hrung wƤhrend des Walzens gƤnzlich zu beseitigen und hierbei auf eine Hydraulikverbindung zu den EinbaustĆ¼cken zu verzichten.The invention has for its object the game of the work roll chocks to be completely eliminated in their vertical guidance during rolling and to do without a hydraulic connection to the chocks.
Die gestellte Aufgabe wird erfindungsgemĆ¤Ć dadurch gelƶst, dass die Arbeitswalzen-EinbaustĆ¼cke zumindest einer StƤnderseite mittels der in dem StƤnderrahmen angeordneten Kolben-Zylinder-Einheit und mittels jeweils eines an der Kolbenstirnseite angeordneten StĆ¼tzelementes gefĆ¼hrt gegen die andere StƤnderseite und deren FĆ¼hrung ohne Bewegungsspiel bei stillgesetztem Vertikal-Walzenanstellantrieb andrĆ¼ckbar und bei eingeschaltetem Vertikal-Walzenanstellantrieb lƶsbar ist. Dadurch wird wƤhrend des Walzens das Spiel der EinbaustĆ¼cke in den FĆ¼hrungen der StƤnderfenster vollkommen beseitigt, wodurch das Ergebnis der Regelung durch das AGC-Verfahren begĆ¼nstigt und das Walzprofil genauer eingehalten wird. The object is achieved according to the invention in that the work roll chocks at least one stand side by means of that in the stand frame arranged piston-cylinder unit and by means of one at each Piston face arranged support element guided against the other side of the stator and their guidance without movement play when the vertical roller actuator is shut down can be pressed on and with the vertical roller adjustment drive switched on is solvable. This will make the game while rolling the chocks in the guides of the stand windows are completely eliminated, which favors the result of the regulation by the AGC process and the rolled profile is adhered to more precisely.
In Ausgestaltung der Erfindung ist vorgesehen, dass das StĆ¼tzelement jeweils aus einer Ronde aus Metall mit am Umfang eingelassenen FĆ¼hrungsbƤndern aus Kunststoff besteht und dass die Ronde im StƤnderrahmen gefĆ¼hrt ist. Die Ronde nimmt in dieser Gestaltung QuerkrƤfte auf, die auf den StƤnderrahmen wirken und sichert wƤhrend des Walzens einen starren Aufbau der Spielbeseitigung. Beim Arbeitswatzenwechsel kann die Ronde zurĆ¼ckgefahren werden.In an embodiment of the invention it is provided that the support element in each case from a round plate made of metal with guide bands embedded in the circumference made of plastic and that the circular blank is guided in the stand frame. The In this design, Ronde absorbs transverse forces that act on the stand frame act and ensures a rigid structure of the game elimination during rolling. The round blank can be retracted when changing the work carriage.
Eine andere Ausgestaltung sieht vor, dass die Ronde an der Kolbenstange der Kolben-Zylinder-Einheit befestigt ist. Dadurch fĆ¼hrt die Ronde alle Bewegungen der Kolbenstange mit aus.Another embodiment provides that the round plate on the piston rod of the Piston-cylinder unit is attached. As a result, the circular blank guides all movements the piston rod with.
Eine feinfĆ¼hlige Bewegung des Kolbens kann auĆerdem dadurch erreicht werden, indem der Kolben der Kolben-Zylinder-Einheit beidseitig beaufschlagbar ist.A sensitive movement of the piston can also be achieved by acting on both sides of the piston of the piston-cylinder unit is.
Die Versorgung mit Druckmedium ist dahingehend gestaltet, dass die Kolben-Zylinder-Einheit mittels Druckmedium durch KanƤle im StƤnderrahmen versorgbar ist. Es brauchen also beim Walzenwechsel keine Schlauchleitungen gelƶst und wieder verbunden werden.The supply of pressure medium is designed in such a way that the piston-cylinder unit can be supplied by means of pressure medium through channels in the stand frame is. No hose lines need to be loosened when changing the roller and be reconnected.
Dabei ist noch vorteilhaft fĆ¼r die Druckmedium-Versorgung, dass die KanƤle fĆ¼r das Druckmedium in um den Zylinder der Kolben-Zylinder-Einheit umlaufenden Nuten mĆ¼nden.It is also advantageous for the pressure medium supply that the channels for the pressure medium around the cylinder of the piston-cylinder unit Grooves open.
Eine fĆ¼r die Bewegungen der Ronde vorteilhafte Gestaltung besteht ferner darin, dass die Ronde aus Rotguss gefertigt ist und dass die am Umfang eingelassenen FĆ¼hrungsbƤnder aus Teflon bestehen.A design which is advantageous for the movements of the round blank also consists in that the round blank is made of gunmetal and that the recessed on the circumference Guide bands are made of Teflon.
Der Ablauf der Spielbeseitigung und der Zulassung eines Bewegungsspiels beim Walzspakt-Einstellen , d.h. beim vertikalen Verstellen der EinbaustĆ¼cke, kann dadurch vorteilhaft beeinflusst werden, dass der Hydraulikdruck in der Kolben-Zylinder-Einheit auf unterschiedliche DrĆ¼cke zur Spieleinstellung oder Spielbeseitigung fĆ¼r das EinbaustĆ¼ck in der FĆ¼hrung der jeweiligen StƤnderseite regelbar ist und dass fĆ¼r eine Vertikalverstellung der EinbaustĆ¼cke die Regelung auf Signale einer Automatic-Gage-Control-Regelung (AGC) umstellbar ist. Dadurch kann die Ronde axial beim Anstich mit vollem Hydraulikdruck gegen das EinbaustĆ¼ck gepreĆt und dadurch jegliches Spiel beseitigt werden. Beim Arbeiten mit der AGC-Regelung ist der Hydraulikdruck leicht reduziert, so dass eine Vertikalverstellung der EinbaustĆ¼cke mit den Arbeitswalzen ermƶglicht wird. Es ist daher eine Steuerung vorteilhaft, die ihrerseits die Signale von der AGC-Regelung erhƤlt. Die Steuerung fĆ¼r die Ronde erkennt, zu welchem Zeitpunkt die AGC-Regelung eine Vertikalverstellung des EinbaustĆ¼ckes fordert und kann in entsprechend kurzer Zeit den Hydraulikdruck in der horizontalen Kolben-Zylinder-Einheit reduzieren.The process of eliminating the game and approving a movement game when setting the Rollspakt, i.e. when vertically adjusting the chocks, can advantageously be influenced in that the hydraulic pressure in the Piston-cylinder unit at different pressures for adjusting the play or Elimination of play for the chock in the guide of the respective stand side is adjustable and that for a vertical adjustment of the chocks Control can be converted to signals from an automatic gage control system (AGC) is. This enables the circular blank to be axially pressed at full hydraulic pressure pressed against the chock and thereby eliminating any play. When working with the AGC control, the hydraulic pressure is slightly reduced, so that allows vertical adjustment of the chocks with the work rolls becomes. It is therefore advantageous to have a control which in turn controls the signals from of the AGC regulation. The controller for the round blank recognizes which one When the AGC control requires a vertical adjustment of the chock and can adjust the hydraulic pressure in the horizontal in a short time Reduce the piston-cylinder unit.
Nach weiteren Merkmalen kann auch ein Standardglied zur Profilsteuerung Ć¼ber die Arbeitswalzenbiegung vƶllig unbehindert eingesetzt werden. Hierzu wird vorgeschlagen, dass in Verbindung mit einem an einem Walzenzapfen angreifenden, zur Walzenachse senkrecht verlaufenden Biegezylinder mehrere einzelne Kolben-Zylinder-Einheiten, die zu dem Biegezylinder mit Abstand verlaufend angeordnet sind, an einem Kolbenkopf angreifen, der mit der Ronde versehen ist. Dabei kann z.B. ein May-West-Biegeblock eingesetzt werden. Ebenso kann eine CVC-Regelung durch Axialverschiebung von profilierten Walzen eingesetzt werden.According to further features, a standard link for profile control can also be used can be used completely unhindered via the work roll bend. For this it is proposed that in connection with a several bending cylinders perpendicular to the roll axis individual piston-cylinder units that run at a distance from the bending cylinder are arranged to attack a piston head that is connected to the round blank is provided. Here, e.g. a May-West bending block can be used. CVC control can also be performed by axially shifting profiled sections Rollers are used.
Beim Einsatz solcher Biege-Einrichtungen kann es vorteilhaft sein, dass symmetrisch zur Achse des Biegezylinders in Polygonalecken die Kolben-Zylinder-Einheiten fĆ¼r die Ronde angeordnet sind. Diese Anordnung nutzt den vorhandenen Raum und die vorhandenen GrundflƤchen um den Biegezylinder herum aus.When using such bending devices, it may be advantageous to be symmetrical the piston-cylinder units to the axis of the bending cylinder in polygon corners are arranged for the round blank. This arrangement uses the existing one Space and the existing base areas around the bending cylinder out.
Weiterhin kann es aus FlƤchen- oder RaumgrĆ¼nden vorteilhaft sein, wenn die Ronde mit ihrer MittellƤngsachse exzentrisch zur Arbeitswalzenachse angeordnet ist. Furthermore, it may be advantageous for reasons of space or space if the Ronde with its central longitudinal axis arranged eccentrically to the work roll axis is.
Eine weitere Variante der Anordnung mehrerer kleinerer Kolben-Zylinder-Einheiten besteht darin, dass auf der theoretisch vorgesehenen KreisflƤche der Ronde zwei oder mehr Ronden mit jeweils kleinerer KreisflƤche vorgesehen sind. Derartige MaĆnahmen kƶnnen konstruktiv im Einzelfall vorteilhaft sein.Another variant of the arrangement of several smaller piston-cylinder units consists in the fact that the Rounds two or more rounds, each with a smaller circular area are. Such measures can be constructively advantageous in individual cases.
FĆ¼r den Fall, dass erhebliche ReibungswiderstƤnde, wie z.B. Haftreibung beim Umschalten von Pressen auf Lƶsen der Ronde auftreten, kann die Erfindung auch dahingehend gestaltet sein, dass das StĆ¼tzelement aus einem Gleitschuh besteht, der Ƥhnlich einer Schlittenkufe bei entsprechender Kufenbreite geformt ist und in die FĆ¼hrung der EinbaustĆ¼cke eingreift.In the event that significant frictional resistances, e.g. Stiction at Switching from presses to loosening the blank can occur, the invention also be designed in such a way that the support element consists of a sliding shoe exists, which is shaped like a sled runner with a corresponding runner width and engages in the guide of the chocks.
In der Zeichnung sind AusfĆ¼hrungsbeispiele der Erfindung dargestellt, die nachfolgend nƤher erlƤutert werden.In the drawing, embodiments of the invention are shown are explained in more detail below.
Es zeigen:
- Fig. 1
- einen senkrechten Schnitt durch ein Quarto-WalzgerĆ¼st in Vorderansicht,
- Fig. 2
- eine zugehƶrige Seiten-Ansicht mit Teilschnitt durch das Quarto-WalzgerĆ¼st,
- Fig. 3
- einen vergrƶĆerten Schnitt durch die Ronde mit horizontaler Kolben-Zylinder-Einheit,
- Fig. 4
- eine Seiten-Ansicht auf die Ronde,
- Fig. 5
- eine AusfĆ¼hrungsform mit einem Biegeblock auf einem Walzenzapfen
und mehreren Kolben-Zylinder-Einheiten fĆ¼r die Spielbeseitigung, - Fig. 6
- einen horizontalen Schnitt durch eine AusfĆ¼hrungsform mit Biegezylinder und mehreren kleineren Kolben-Zylinder-Einheiten fĆ¼r die Spielbeseitigung der EinbaustĆ¼cke,
- Fig. 7
- eine zu Fig. 6 gehƶrende Seitenansicht auf die Ronde und
- Fig. 8A
- eine AusfĆ¼hrungsform mit zwei Kolben-Zylinder-Einheiten und vier FĆ¼hrungsstangen, die an der Ronde angreifen, in Seitenansicht und
- Fig. 8B
- einen Querschnitt durch die Anordnung gemĆ¤Ć Fig. 8A.
- Fig. 1
- a vertical section through a four-high mill stand in front view,
- Fig. 2
- an associated side view with partial section through the four-high mill stand,
- Fig. 3
- an enlarged section through the round blank with a horizontal piston-cylinder unit,
- Fig. 4
- a side view of the round blank,
- Fig. 5
- an embodiment with a bending block on a roll neck
and several piston-cylinder units for clearance elimination, - Fig. 6
- a horizontal section through an embodiment with a bending cylinder and several smaller piston-cylinder units for eliminating play of the chocks,
- Fig. 7
- a side view belonging to Fig. 6 on the blank and
- Figure 8A
- an embodiment with two piston-cylinder units and four guide rods that engage the blank, in side view and
- Figure 8B
- a cross section through the arrangement of FIG. 8A.
Das WalzgerĆ¼st gemĆ¤Ć Fig. 1, ein Quarto-WalzgerĆ¼st, dient zum Warm- oder
Kaltwalzen von metallischem Bandmaterial 1, z.B. von verschiedenen StahlgĆ¼ten,
und besitzt StĆ¼tzwalzen 2, 3 und Arbeitswalzen 4, 5, die jeweils in EinbaustĆ¼cken
6, 7 drehgelagert sind. Die EinbaustĆ¼cke 6, 7 fĆ¼r die StĆ¼tzwalzen 2,
3 oder fĆ¼r die Arbeitswalzen 4, 5 sind beidseitig in FĆ¼hrungen 8 eines StƤnderrahmens
9 zur Einstellung des Walzspaltes 10 gleitend gefĆ¼hrt. ZusƤtzlich sind
in dem StƤnderrahmen 9 horizontale Kolben-Zylinder-Einheiten 11 zumindest
einseitig (vgl. Fig. 2) zur Spiel-einstellung der EinbaustĆ¼cke 6, 7 fĆ¼r die Arbeitswalzen
4, 5 vorgesehen.The roll stand according to FIG. 1, a four-high roll stand, is used for hot or
Cold rolling of
Die obere StĆ¼tzwalze 2 ist mittels hydraulischer Stellzylinder 12, die entsprechend
einer AGC-Regelung arbeiten, ausgerĆ¼stet. Die unteren EinbaustĆ¼cke 7
ruhen im StƤnderrahmen 9 auf Kraftmessdosen 13. Die Arbeitswalzen-EinbaustĆ¼cke
6, 7 fĆ¼r zumindest eine StƤnderseite 9a sind mittels der in dem
StƤnderrahmen 9 angeordneten, horizontalen Kolben-Zylinder-Einheiten 11 und
mittels jeweils eines an der Kolbenstimseite 11 a angeordneten StĆ¼tzelementes
14, nach allen Seiten gefĆ¼hrt, gegen die andere StƤnderseite 9b und deren
FĆ¼hrung 8 ohne Bewegungsspiel bei festgesetztem Vertikal-Walzenanstellantrieb,
der aus den hydraulischen vertikalen Stellzylindem 12
besteht, angedrĆ¼ckt und bei eingeschaltetem Vertikal-Walzenan-stellantrieb
leicht gelƶst, so dass eine gleitende Verstellung der EinbaustĆ¼cke 6, 7 stattfinden
kann.The
Das StĆ¼tzelement 14 besteht jeweils aus einem zylindrischen Kƶrper, kurz als
Ronde 14a bezeichnet (Fig. 3), wobei die Ronde 14a aus Metall hergestellt ist,
z.B. aus Rotguss und am Umfang 14b FĆ¼hrungsbƤnder 15 aus Kunststoff, z.B.
aus Teflon, eingelassen sind. The
Die Ronde 14a ist an einer Kolbenstange 16 der horizontalen Kolben-Zylinder-Einheit
11 mittels einer Verschraubung 17 befestigt. Der Kolben 18 der horizontalen
Kolben-Zylinder-Einheit 11 ist wie ersichtlich doppelseitig mit Druckmedium
beaufschlagbar. Das Druckmedium fĆ¼r die Kolben-Zylinder-Einheit 11
wird durch KanƤle 19 und 20 den beiden Kolbenseiten zugefĆ¼hrt. Die KanƤle 19
und 20 verlaufen innerhalb des StƤnderrahmens 9. Die KanƤle 19 und 20 mĆ¼nden
in um den Zylinder 21 bzw. um die Kolbenstange 16 umlaufende Nuten 22
bz. 23. In Fig. 4 ist die kreisrunde AuĆenform der Ronde 14a sichtbar.The blank 14a is on a
GemĆ¤Ć einer alternativen AusfĆ¼hrungsform ist die Steuerung des Hydraulikdrucks
in der Kolben-Zylinder-Einheit 11 auf die unterschiedlichen DrĆ¼cke zur
Spieleinstellung bei BetƤtigung des Vertikal-Walzenverstellantriebs oder der
Spielbeseitigung fĆ¼r das EinbaustĆ¼ck 6 oder 7 durch BetƤtigung der horizontalen
Kolben-Zylinder-Einheit 11 in der FĆ¼hrung 8 und der jeweiligen StƤnderseite
9a oder 9b eingestellt und entsprechend regelbar, wofĆ¼r bei einer Vertikalverstellung
der EinbaustĆ¼cke 6 oder 7 mit den StĆ¼tzwalzen 2 oder 3 die Regelung
auf Signale einer Automatic-Gage-Control-Regelung umgestellt wird.According to an alternative embodiment, the control of the hydraulic pressure
in the piston-
Eine weitere AusfĆ¼hrungsform (Fig. 5) sieht eine Verbindung mit einem an einem
Walzenzapfen 4a oder 5a, zur Walzenachse 24 senkrecht verlaufenden
Biegezylinders 25 vor. In dieser AusfĆ¼hrungsform ist die Ronde 14a des StĆ¼tzelements
14 in der Kolben-Zylinder-Einheit 11 aus mehreren kleineren Kolben-Zylinder-Einheiten
27 bestehend, die mit einem Abstand 26 (vgl. Fig. 6) zum
Biegezylinder 25 verlaufen, gebildet. Der Kolbenkopf 11b ist mit der Ronde 14a
versehen. Der relativ groĆe Kolbenkopf 11b und die relativ kleinen Kolben-Zylinder-Einheiten
27 kƶnnen zweckmƤĆig mittels Innensechskantschrauben 33
verbunden werden, um den jeweiligen Kolbenkopf auch zurĆ¼ckziehen zu kƶnnen. Another embodiment (Fig. 5) provides a connection to one at a
Symmetrisch zur Achse 25a des Biegezylinders 25 sind in Polygonalecken 28
die kleineren Kolben-Zylinder-Einheiten 27 fĆ¼r die Ronde 14a angeordnet (Fig.
7).
Hierbei ist die Ronde 14a mit ihrer MittellƤngsachse 29 exzentrisch zur Arbeitswalzenachse
30 angeordnet.Here, the round blank 14a with its central longitudinal axis 29 is eccentric to the
In den Fig. 8A und 8B ist eine weitere Variante der Gestaltung dargestellt, mit
der beabstandet zum Biegezylinder 25 zwei symmetrisch angeordnete horizontale
Kolben-Zylinder-Einheiten 11 mit jeweils an dem Kolben 18 Ć¼ber Laschen
31 axial und parallel angeordneten , paarweisen FĆ¼hrungsstangen 32
gelagert sind, die gemeinsam die Ronde 14a halten. 8A and 8B, a further variant of the design is shown with
the spaced from the bending
- 11
- Bandmaterialband material
- 22
- StĆ¼tzwalzesupporting roll
- 33
- StĆ¼tzwalzesupporting roll
- 44
- ArbeitswalzeStripper
- 4a4a
- Walzenzapfenroll neck
- 55
- ArbeitswalzeStripper
- 5a5a
- Walzenzapfenroll neck
- 66
- EinbaustĆ¼ckchock
- 77
- EinbaustĆ¼ckchock
- 88th
- FĆ¼hrungguide
- 99
- StƤnderrahmenUprights
- 9a9a
- StƤnderseitestand side
- 9b9b
- StƤnderseitestand side
- 1010
- Walzspaltnip
- 1111
- horizontale Kolben-Zylinder-Einheithorizontal piston-cylinder unit
- 11a11a
- KolbenstimseitePiston end face
- 11b11b
- Kolbenkopfpiston head
- 1212
- hydraulische, vertikale Stellzylinder (Vertikal-Walzenanstellantrieb)hydraulic, vertical actuating cylinder (vertical roller actuator)
- 1313
- KraftmessdoseLoad cell
- 1414
- StĆ¼tzelementsupport element
- 14a14a
- RondeRonde
- 14b14b
- Umfang der RondeCircumference of the round blank
- 1515
- FĆ¼hrungsbƤnderguide belts
- 1616
- Kolbenstangepiston rod
- 1717
- Verschraubungscrew
- 1818
- Kolbenpiston
- 1919
- Druckmedium-KanalPressure medium channel
- 2020
- Druckmedium-KanalPressure medium channel
- 2121
- Zylindercylinder
- 2222
- Nutengroove
- 2323
- Nutengroove
- 2424
- Walzenachseroll axis
- 2525
- Biegezylinderbending cylinders
- 25a25a
- Achse des BiegezylindersAxis of the bending cylinder
- 2626
- Abstanddistance
- 2727
- mehrere kleinere Kolben-Zylinder-Einheitenseveral smaller piston-cylinder units
- 2828
- PolygonaleckenPolygonalecken
- 2929
- MittellƤngsachse der RondeCentral longitudinal axis of the round blank
- 3030
- Arbeitswalzen-AchseWork roll axis
- 3131
- Lascheflap
- 3232
- paarweise FĆ¼hrungsstangenin pairs of guide rods
- 3333
- InnensechskantschraubenAllen screws
Claims (13)
- Roll stand for hot-rolling or cold-rolling of metallic strip material (1), for example of different steel qualities, with backing rolls and working rolls (2, 3, 4, 5), which are rotatably mounted in respective chocks (6, 7), wherein the chocks are adjustable at both ends in guides (8) of the housing frame (9) for setting of the rolling gap and additionally at at least one end by means of horizontal piston-cylinder units (11), which are arranged in the housing frame, for setting of play, characterised in that the working roll chocks (6; 7) of at least one housing side (9a) are guided relative to the other housing side (9b) by means of the piston-cylinder unit (11) arranged in the housing frame (9) and each by means of a respective support element (14) arranged at the piston end face (11a) and the guides (8) thereof are loadable with pressure without movement play when the vertical roll adjusting drive is stationary and are releasable when the vertical roll adjusting drive is switched on.
- Roll stand according to claim 1, characterised in that each support element (14) consists of a round plate (14a) of metal with guide strips (15) of synthetic material let in at the circumference (14b) and that the round plate (14a) is guided in the housing frame (9).
- Roll stand according to one of claims 1 or 2, characterised in that the round plate (14a) is fastened to the piston rod (16) of the piston cylinder unit (11).
- Roll stand according to one of claims 1 to 3, characterised in that the piston (18) of the piston-cylinder unit (11) can be loaded at both sides.
- Roll stand according to one of claims 1 to 4, characterised in that the piston-cylinder unit (11) can be supplied by means of pressure medium via channels (19; 20) in the housing frame (9).
- Roll stand according to claim 5, characterised in that channels (19; 20) for the pressure medium open into grooves (22; 23) running around the cylinder (21) of the piston-cylinder unit (11).
- Roll stand according to one of claims 1 to 6, characterised in that the round plate (14a) is made of gun metal and that the guide strips (15) let in at the circumference (14b) consist of 'Teflon'.
- Roll stand according to one of claims 1 to 7, characterised in that the hydraulic pressure in the piston-cylinder unit (11) can be regulated to different pressures for setting play or for eliminating play for the chocks (6; 7) in the guide (8) of the respective housing side (9a; 9b) and that for vertical adjustment of the chocks (6; 7) the regulation can be converted to signals of an Automatic Gauge Control Regulation (AGC).
- Roll stand according to one of claims 1 to 8, characterised in that in conjunction with a bending cylinder (25), which engages at a roll pin (4a; 5a) and extends vertically relative to the roll axis (24), several individual piston-cylinder units (27) arranged to extend at a spacing (26) relative to the bending cylinder (25) engage at a piston head (11b) which is provided with the round plate.
- Roll stand according to claim 9, characterised in that the piston-cylinder units (27) for the round plate (14a) are arranged symmetrically to the axis (25a) of the bending cylinder (25) in polygonal comers (28).
- Roll stand according to one of claims 1 to 10, characterised in that the round plate (14a) is arranged with its centre longitudinal axis (29) eccentric with respect to the working roll axis (30).
- Roll stand according to one of claims 1 to 11, characterised in that arranged on the theoretically provided circular area of the round plate (14a) are two or more round plates with respectively smaller circular area.
- Roll stand according to claim 1, characterised in that the support element (14) consists of a slide shoe which is formed similarly to a slide skid with corresponding skid width and engages in the guide (8) of the chocks (6; 7).
Applications Claiming Priority (3)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
DE10062489A DE10062489A1 (en) | 2000-12-14 | 2000-12-14 | Roll stand for hot or cold rolling of metal strip material |
DE10062489 | 2000-12-14 | ||
PCT/EP2001/014066 WO2002047836A1 (en) | 2000-12-14 | 2001-12-01 | Roll stand for hot-rolling or cold-rolling metallic strips |
Publications (2)
Publication Number | Publication Date |
---|---|
EP1343597A1 EP1343597A1 (en) | 2003-09-17 |
EP1343597B1 true EP1343597B1 (en) | 2004-10-13 |
Family
ID=7667251
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
EP01990469A Expired - Lifetime EP1343597B1 (en) | 2000-12-14 | 2001-12-01 | Roll stand for hot-rolling or cold-rolling metallic strips |
Country Status (16)
Country | Link |
---|---|
US (1) | US7111486B2 (en) |
EP (1) | EP1343597B1 (en) |
JP (1) | JP4358508B2 (en) |
KR (1) | KR100813481B1 (en) |
CN (1) | CN1245262C (en) |
AT (1) | ATE279270T1 (en) |
AU (1) | AU2002229587A1 (en) |
BR (1) | BR0115721B1 (en) |
CA (1) | CA2431924C (en) |
CZ (1) | CZ297024B6 (en) |
DE (2) | DE10062489A1 (en) |
ES (1) | ES2228975T3 (en) |
RU (1) | RU2283196C2 (en) |
UA (1) | UA75107C2 (en) |
WO (1) | WO2002047836A1 (en) |
ZA (1) | ZA200303959B (en) |
Families Citing this family (7)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
DE10261077B4 (en) * | 2002-12-20 | 2014-10-16 | Betriebsforschungsinstitut VDEh - Institut fĆ¼r angewandte Forschung GmbH | Flat guide module, in particular for a rolling stand, and rolling method for a rolling stand with flat guide module |
US7225657B2 (en) * | 2004-05-05 | 2007-06-05 | United States Steel Corporation | Elimination of rolling mill chatter |
DE102005042168A1 (en) * | 2005-06-08 | 2006-12-14 | Sms Demag Ag | Device for acting on the guide surfaces of guided in the stator windows of rolling stands bearing chocks |
KR100813480B1 (en) * | 2005-06-08 | 2008-03-13 | ģģ¤ģ ģģ¤ ė°ė§ź·ø ģ ķ°ģź²ģ ¤ģ¤ķķø | Device for pressurizing the guide surfaces of the bearing mounting pieces guided in housing windows of roll stand |
CN103189151B (en) * | 2010-07-26 | 2016-09-07 | ē§å°ē¹ęÆå·„ēØęéč“£ä»»äø¤åå ¬åø | The support plate of fluid leveling |
CN102847717A (en) * | 2012-09-08 | 2013-01-02 | äøč²ē§ęč”份ęéå ¬åø | Device and method for improving steady operation of roll system of rolling mill |
DE102015218360A1 (en) * | 2015-09-24 | 2017-03-30 | Sms Group Gmbh | Roll stand and method for changing work rolls |
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US1887870A (en) * | 1929-12-23 | 1932-11-15 | American Brass Co | Rolling mill |
US3302435A (en) * | 1963-11-20 | 1967-02-07 | Blaw Knox Co | Rolling mill chock clearance take-up devices |
CH613134A5 (en) * | 1976-11-02 | 1979-09-14 | Escher Wyss Ag | |
US4402207A (en) * | 1981-07-09 | 1983-09-06 | Olin Corporation | Zero clearance device for rolling mill apparatus |
CH659865A5 (en) * | 1982-07-30 | 1987-02-27 | Escher Wyss Ag | HYDROSTATIC SUPPORT ELEMENT AND ITS USE IN A ROLLING DEVICE. |
JPS61189809A (en) | 1985-02-18 | 1986-08-23 | Ishikawajima Harima Heavy Ind Co Ltd | Rolling-mill equipment |
US4747291A (en) * | 1986-05-27 | 1988-05-31 | United Engineering Rolling Mills, Inc. | Hydraulic force applying device in a rolling mill stand |
US4898014A (en) * | 1988-12-23 | 1990-02-06 | United Engineering, Inc. | Roll shifting system for rolling mills |
JPH03285708A (en) | 1990-04-02 | 1991-12-16 | Ishikawajima Harima Heavy Ind Co Ltd | Rolling equipment |
DE4434797A1 (en) * | 1994-09-29 | 1996-04-04 | Schloemann Siemag Ag | Roller bearing units for use in plate rolling stands |
IT1297583B1 (en) * | 1997-12-24 | 1999-12-17 | Danieli Off Mecc | COMPENSATION PROCEDURE FOR CRANKSETS IN FOURTH ROLLING CAGES WITH CROSS HANDLING OF THE |
DE19911638A1 (en) * | 1999-03-16 | 2000-09-21 | Sms Demag Ag | Device for controllably influencing the frictional forces between the guide surfaces and contact surfaces of bearing chocks of the rollers guided in the stator windows of roll stands |
JP4402264B2 (en) * | 1999-08-11 | 2010-01-20 | äøč±éå·„ę„ę Ŗå¼ä¼ē¤¾ | Rolling mill |
-
2000
- 2000-12-14 DE DE10062489A patent/DE10062489A1/en not_active Withdrawn
-
2001
- 2001-01-12 UA UA2003076596A patent/UA75107C2/en unknown
- 2001-12-01 KR KR1020037007840A patent/KR100813481B1/en not_active IP Right Cessation
- 2001-12-01 CN CNB018206220A patent/CN1245262C/en not_active Expired - Fee Related
- 2001-12-01 BR BRPI0115721-3A patent/BR0115721B1/en not_active IP Right Cessation
- 2001-12-01 WO PCT/EP2001/014066 patent/WO2002047836A1/en active IP Right Grant
- 2001-12-01 JP JP2002549397A patent/JP4358508B2/en not_active Expired - Fee Related
- 2001-12-01 CZ CZ20031627A patent/CZ297024B6/en not_active IP Right Cessation
- 2001-12-01 AT AT01990469T patent/ATE279270T1/en not_active IP Right Cessation
- 2001-12-01 EP EP01990469A patent/EP1343597B1/en not_active Expired - Lifetime
- 2001-12-01 CA CA002431924A patent/CA2431924C/en not_active Expired - Fee Related
- 2001-12-01 RU RU2003121239/02A patent/RU2283196C2/en not_active IP Right Cessation
- 2001-12-01 ES ES01990469T patent/ES2228975T3/en not_active Expired - Lifetime
- 2001-12-01 DE DE50104148T patent/DE50104148D1/en not_active Expired - Lifetime
- 2001-12-01 AU AU2002229587A patent/AU2002229587A1/en not_active Abandoned
- 2001-12-01 US US10/433,758 patent/US7111486B2/en not_active Expired - Fee Related
-
2003
- 2003-05-22 ZA ZA200303959A patent/ZA200303959B/en unknown
Also Published As
Publication number | Publication date |
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CA2431924C (en) | 2009-06-02 |
ZA200303959B (en) | 2003-07-24 |
DE50104148D1 (en) | 2004-11-18 |
AU2002229587A1 (en) | 2002-06-24 |
EP1343597A1 (en) | 2003-09-17 |
US20040040359A1 (en) | 2004-03-04 |
CZ297024B6 (en) | 2006-08-16 |
BR0115721A (en) | 2003-09-09 |
KR100813481B1 (en) | 2008-03-13 |
BR0115721B1 (en) | 2009-01-13 |
RU2003121239A (en) | 2005-02-20 |
ES2228975T3 (en) | 2005-04-16 |
UA75107C2 (en) | 2006-03-15 |
RU2283196C2 (en) | 2006-09-10 |
JP4358508B2 (en) | 2009-11-04 |
WO2002047836A1 (en) | 2002-06-20 |
ATE279270T1 (en) | 2004-10-15 |
DE10062489A1 (en) | 2002-06-20 |
CA2431924A1 (en) | 2002-06-20 |
KR20030059337A (en) | 2003-07-07 |
JP2004530560A (en) | 2004-10-07 |
US7111486B2 (en) | 2006-09-26 |
CN1481286A (en) | 2004-03-10 |
CZ20031627A3 (en) | 2004-01-14 |
CN1245262C (en) | 2006-03-15 |
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