EP0925854B1 - Vorrichtung und Verfahren zur Einstellung der Führungen für den Bandeinlauf in ein Walzwerk - Google Patents

Vorrichtung und Verfahren zur Einstellung der Führungen für den Bandeinlauf in ein Walzwerk Download PDF

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Publication number
EP0925854B1
EP0925854B1 EP98204393A EP98204393A EP0925854B1 EP 0925854 B1 EP0925854 B1 EP 0925854B1 EP 98204393 A EP98204393 A EP 98204393A EP 98204393 A EP98204393 A EP 98204393A EP 0925854 B1 EP0925854 B1 EP 0925854B1
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Prior art keywords
strip
guides
force
signal
signals
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EP98204393A
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English (en)
French (fr)
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EP0925854A3 (de
EP0925854A2 (de
Inventor
Marco Andreolii
Carlo Perego
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ABB Process Solutions and Services SpA
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ABB Process Solutions and Services SpA
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    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B21—MECHANICAL METAL-WORKING WITHOUT ESSENTIALLY REMOVING MATERIAL; PUNCHING METAL
    • B21B—ROLLING OF METAL
    • B21B39/00—Arrangements for moving, supporting, or positioning work, or controlling its movement, combined with or arranged in, or specially adapted for use in connection with, metal-rolling mills
    • B21B39/14—Guiding, positioning or aligning work

Definitions

  • the present invention relates to a device and a method for adjusting the guides for the entry of the strip in a mill, particularly for controlling the position and the centering of the ribbon at the inlet of housings.
  • the guides for strips at the inlet of mill housings are currently generally controlled by virtue of a position presetting performed by a closed-loop position adjustment system.
  • a position presetting performed by a closed-loop position adjustment system.
  • the aim of the present invention is therefore to provide a device for adjusting the guides for the entry of the strip in a housing which can automatically adapt to width variations of said strip and to any transverse movements thereof with respect to the direction in which the strip advances toward the housing.
  • Another object of the present invention is to provide a device for adjusting the guides for the entry of the strip in a housing in which the force with which the edges of the strip slide against said guides is adjusted so as to avoid exceeding a preset maximum value.
  • an object of the present invention is to provide a device for adjusting the guides for the entry of the strip in a housing which, in controlling the position and the contact force of the edges of the strip, allows to take into account the width, thickness and metallurgical characteristic of the strip in order to center the strip with respect to the guides.
  • Another object of the present invention is to provide a device for adjusting the guides for the entry of the strip in a housing which allows more precise and accurate winding on the takeup reel, consequently improving the quality of the produced roll.
  • Another object of the present invention is to provide a device for adjusting the guides for the entry of the strip in a housing which allows to reduce the damage and wear of said guides.
  • Another object of the present invention is to provide a device for adjusting the guides for the entry of the strip in a housing which is highly reliable, relatively easy to provide and at competitive costs.
  • the reference numeral 1 designates a strip to be rolled, which is unwound from a feeder reel 100 and is guided to the inlet of a housing 200 by a pair of inlet guides 2 and 3, respectively an operator-side guide and a drive-side guide, where the expression “operator side” designates the side of the mill at which the control panels are located and the expression “drive side” designates the opposite side.
  • the strip 1 that exits from the housing 200 is then wound on a takeup reel 200.
  • a first adjustment and actuation element 4 and a second adjustment and actuation element 5 are coupled, by virtue of mechanical means, to mechanical elements to be actuated whose position and force applied to the strip is to be adjusted and controlled.
  • the mechanical elements to be actuated are the guides 2 and 3 for the entry of the strip I in the housing 200.
  • first and second adjustment and actuation elements 4 and 5 comprise a first cylinder and a second cylinder in which the means that are mechanically coupled to the mechanical elements 2 and 3 to be actuated are corresponding pistons 17 and 18 of the cylinders 4 and 5 respectively.
  • Each cylinder 4 and 5 has at least one transducer, designated by the reference numerals 6 and 7 respectively (one for each cylinder), for detecting the position of the corresponding pistons 17 and 18, and has a pair of transducers 8 and 9 (two transducers 8 for the cylinder 4 and two transducers 9 for the cylinder 5) for detecting the force/pressure applied by the pistons 17 and 18 to the guides 2 and 3 to be actuated.
  • each piston 17 and 18 can be detected by means of a single force/pressure transducer per cylinder, if the pressure of the line that feeds the cylinders 4 and 5 is known.
  • the transducers 6 and 7 send feedback signals 21 and 22 related to the position of the pistons 17 and 18 of the cylinders 4 and 5 to an electronic adjustment unit 14.
  • transducers 8 and 9 instead send signals which are compared in transducer means 10 and 11 (for the cylinders 4 and 5 respectively), which in turn send force feedback signals 23 and 24 to the electronic adjustment unit 14.
  • the electronic adjustment unit 14 also receives a position reference signal 25, related to the pistons 17 and 18 of the cylinders 4 and 5, and a maximum force reference signal 26.
  • the position reference signal 25 corresponds to the nominal position of the strip 1 with respect to an ideal central line traced between the two guides 2 and 3 which defines an ideal path for the entry of the strip in the housing.
  • the force reference signal 26 is generated by means of a correlation function 40, which takes into account the width 41 of the strip 1, the thickness 42 of the strip and the code of the alloy of the material 43 of which the strip is made.
  • the electronic adjustment unit 14 is connected to a pair of electronic actuators 12 and 13 for actuating valves 15 and 16 operated by modulated electric control, which act on the respective cylinders 4 and 5.
  • the actuators can be of the type with servovalve, proportional valve, hydraulic motor, pneumatic motor or electric motor.
  • sensors for detecting the movement or the presence of the edge of the strip 1 are designated by the reference numerals 19 and 20, respectively, for the guides 2 and 3 in figure 2.
  • Said sensors detect any displacement of the strip or the presence of the edge, allowing to send a signal which indicates the position of the strip 1 between the guides 2 and 3.
  • the sensors 19 and 20 can be, for example, of the mechanical type, that is to say, probes with a control unit provided with a yielding rod (pneumatic or hydraulic cylinder) with an axial yielding detector, or of the optical type (using a normal-light or monochrome-light detector with an emitter and a receiver), or of the magnetic type.
  • the electronic adjustment unit 14 furthermore receives force feedback signals 23', 24' (generated respectively by the sensors 19 and 20, which are provided analogically) and strip presence feedback signals 23" and 24" (generated by the sensors 19 and 20, which are provided in an ON/OFF mode, that is to say, of a kind suitable to detect the presence or absence of the edge of the strip proximate to each guide).
  • the signals 23', 23", 24', 24" are actually an alternative to the signals 23 and 24, and in turn the signals 23', 23" and 24', 24" are also mutually alternative and depend of course on the type of sensor chosen (sensors 19 and 20).
  • figure 4 describes, as a block diagram, the operation of the electronic adjustment unit 14.
  • the reference numeral 44 designates a position reference enable signal which is sent to enabling means 45, which receive in input the signal produced by the sum of the strip width signal 41 and of a positional tolerance signal 46 for the strip 1 with respect to the guides 2 and 3; said signals merge in an adder block 47, forming a theoretical guide position reference.
  • An actual position reference which depends on the real alignment of the strip, is furthermore generated for each guide 2 and 3.
  • the signal 44 sent to a block which generates a pulsed signal, generates a command for starting the closing motion of the guides by means of the memory blocks 257 and 258 for the hydraulic actuators 15 and 16 respectively.
  • the start command (START) is sent to the ramp generator means 57 and 58 which, by receiving in input a maximum closure reference from the block 157 and 158, for the operator side and for the drive side respectively, generate a ramped position reference which is input to the adder means 57a and 58a respectively.
  • the closure reference signal generated by the means 57 and 58 is stored at the value reached at force contact between each guide and the corresponding edge of the strip, as detected by the force feedback signals generated by the transducer means 10 and 11 or 19 and 20.
  • the storage signals are EN1(OS) and EN1(DS) for the operator side and for the drive side respectively (if the force transducers are enabled with signals 23-23' and 24-24') or the signals Pb(OS) and Pb(DS), for the operator side and for the drive side respectively (if the strip proximity sensors 19 and 20 are enabled with reception signals 23" and 24").
  • the signals MEM(OS) and MEM(DS) generated by the memory blocks 257 and 258, respectively, generate, by means of a logic sum block 147, a RESET signal which enables the position/force-related adjustment of the guides by following and correcting the misalignment of the strip.
  • the RESET signal enables in particular the blocks 69, 82 and 71a on the operator side and 70, 83 and 72a on the drive side.
  • the force threshold signal 26 is a signal which is compared, in blocks 49 and 50, with the actual measured force signal 23 which arrives from the transducer means 8 of the cylinder 4 of the operator side (hereinafter termed OS) and with the actual measured force 24 which arrives from the transducer means 9 of the cylinder 5 of the drive side (hereinafter termed DS).
  • the actual measured force is the reaction force of the edges of the strip 1 against the guides 2 and 3.
  • Said force can be detected, as mentioned, with two types of transducer: force/pressure transducers 8 and 9, or analog transducers 19 and 20 which, by generating yield signals 23', 24' which are appropriately correlated, generate a signal which is equivalent to a force/pressure signal.
  • the transducers 23" and 24" instead emit signals of the ON/OFF type, designated by Pb(OS) and Pb(DS) respectively.
  • a theoretical guide position reference is given which is equal to the sum of the width 41 of the strip 1 plus the tolerance 46; said reference is input to a divide-by-two block 55 in order to divide the reference between the operator-side actuator and the drive-side actuator.
  • the signal for actuating the actual movement of the actuator 15 of the operator side is generated in the ramp generator means 57, which receives in input a START signal, generated as described earlier by the enable signal 44, which activates a memory block 257 which is reset by the presence of the minimum-threshold-exceeded signal EN1(ops) or, as an alternative, Pb(OS).
  • the reset signal stores the last reference generated by the means 57. locking the ramp, and enables adjustment with force limit control.
  • the block 57 is driven for maximum CLOSURE or maximum OPENING by suitable signals which are switched by the switching means 157 as a function of the signal 44.
  • the signal in output from the ramp generator block 57 is sent to a position reference adder block 57a.
  • Position adjustment blocks 59, limiter blocks 61 and amplifier blocks 63 for controlling the valve 15 operated by modulated electric control are cascade-connected to said blocks 57 and 57a.
  • the same control circuit is provided for the drive side DS by means of blocks 58, 58a, 60, 62, 64, 16.
  • the signals e f (OS) and e f (DS), obtained as described earlier, arc sent to enabling means 65 and 66, which in the presence of the enable signal, respectively EN2(OS) and EN2(DS), generated by the threshold means 67 and 68, enable the input of the signals e f (OS) and e f (DS) into the increment/decrement means 69 and 70.
  • the threshold means having a double threshold S1, S2 and designated by the reference numerals 67 and 68 compare the current force/pressure signals 23 and 24 with two limit values S1 and S2 which can also be programmed as a function of the signal 26, generating logic enable signals EN2 and EN1 when the current force signal is greater than S2 and smaller than S1, respectively.
  • the signal EN2 for enabling the force error signal e f (OS) and e f (DS) is generated and is then processed by an increment/decrement block 69, 70, which generates a position correction signal which is proportional to the force error signal and is added in the adder block 57a, 58a for the OS and DS respectively.
  • the position increment signal allows one of the guides, subjected to a reaction force by the edge of the strip 1, to retract by a value which is proportional to the extent of the measured force error with respect to the threshold S2.
  • the same position correction signal is also transmitted to the block 72 and 71, which inverts the sign of the signal, and then to the blocks 72a 71a, which enable the [delta] inc/dec of said signal (that is to say, the incremental opening or closure position change) only if the affected guide is not subjected to a force/pressure value which is higher than the minimum allowed threshold EN1.
  • Said incremental position correction signal enters the adder blocks 58a, 57a, which have already been described, and then enters the position adjustment means (60 and 59), which controls the valve operated by modulated electric control, which drives the opposite guide so that any outward motion of one of the two guides 2 and 3 with respect to the edge of the strip is associated with an inward motion of the other guide by an equal extent, provided it is subjected to a force which is smaller than S1.
  • the signal EN1(OS), EN1(DS) is then sent in input to an enable block 74, 73, which enables the blocks 72a and 71a, which generate a [delta] for the movement, with opposite signs, of the two guides.
  • the blocks 71a and 72a are enabled by the OR blocks 73 and 74, which in turn receive in input signals obtained from logic AND means 200-204, which receive in input the inverted signal Pb(OS), the signals EN1(OS), EN2(DS), MIN-F(DS & OS), the A/D signal SW, the inverted signal Pb(DS), and the signals EN1(DS) and EN2(OS).
  • the A/D signal SW is inverted and input to the blocks 200 and 203 and allows to select the type of sensor (analog or digital) used in the control system.
  • the lower threshold signal EN1 prevails, that is to say, if the force threshold 26 is smaller than the threshold value S1
  • the actual position signal 21 and 22 generated by the position transducer 6 and 7, respectively for the OS and the DS is considered and sent to a subtractor block 75.
  • 57a which, by comparing it with the theoretical position reference in output from the block 55, yields a position error signal epos(OS), epos(DS) which is displayed at the block 76, 76a and is furthermore sent to switching means 77, 77a enabled by the fact that in both sides of the strip the reaction force is smaller than the threshold S1.
  • This means that the strip 1 is not in contact with the guides 2 and 3 or is in contact with a very low force.
  • the position error signal epos(OS) and epos(DS) then enters the increment/decrement block 69 and 70, which generates a position correction signal which is proportional to epos(OS), epos(DS), so as to correct the position of the guide 2 on the operator side or 3 on the drive side in order to again move it into contact with the edge of the strip 1.
  • the position reference signal generated by the error epos(OS), epos(DS) therefore has a function which is practically the opposite of the function of the force error signal e f (OS) and e f (DS), respectively, and is always added, by means of an adder block 57a and 58a, to the position reference and, with its sign inverted, drives the other guide, provided that the conditions for enabling the blocks 72a and 71 a [delta] INCR/DECR are met.
  • the blocks 78 and 79 are additional switching blocks which allow to select, by means of appropriate selection signals F/D SW (signal from analog or digital ON/OFF transducers), whether one type of transducer or the other is active, that is to say, the signals 23-23' (24-24') or the signals 23"-24" are active.
  • F/D SW signal from analog or digital ON/OFF transducers
  • the operation of the operator side (OS) and of the drive side (DS) are mirror-symmetrical and are sometimes independent (for example, both are subjected to a sliding force) and sometimes paired (for example, one side is subjected to force whilst the other one is not loaded).
  • transducers of the ON/OFF type are provided and there are no force/pressure transducers and/or yield transducers.
  • the signals Pb(OS) and Pb(DS) are respectively input to integrator blocks 82 and 83, which are meant to integrate the ON/OFF signal, and the value of the integration is sent as a correction to the position reference signal in output from the ramp block 57 and 58 respectively for the OS and the DS, passing through the blocks 78 and 79.
  • the two guides 2 and 3 can both move so as to open independently of each other and drive the opposite guide to close only if said guide does not detect, from the associated transducer 19 or 20, a signal indicating the presence of the strip at that moment.
  • the reference numerals 84 and 85 designate blocks for compensating for the nonlinear gain of the valves 15 and 16 operated by modulated electric control as a function of force/pressure, respectively.
  • a correction signal is generated to open out the corresponding guide and to close the guide on the opposite side (if there is no strip presence signal on that side).
  • This correction is performed by sending the increment calculated in one of the integrator blocks 82 and 83 to the opposite guide with its sign changed in the blocks 71 a and 72a enabled by the signals Pb(DS) and Pb(OS), respectively, so that the opening of one guide corresponds to the approach of the other side by a same value.
  • the inverted signals Pb(OS) and Pb(DS) are then sent to the blocks 73 and 74 respectively, so as to allow to enable the sending of the movement correction signal, with the opposite sign, to the guides.
  • the adjustment device according to the invention fully achieves the intended aim, since it allows to perform a dual closed-loop position and force/pressure adjustment, automatically adapting to the movements of the strip to realign the guides with the position of the edges of said strip.
  • the device thus conceived ensures that the value of the force with which the edges of the strip slide on the inlet guides does not exceed a preset value, so as to avoid damaging the edges of the strip and reduce guide wear.
  • the device according to the invention furthermore allows to position the guides more accurately, reducing tolerances with respect to the nominal width of the strip being processed, since there is an automatic adaptation to the width variations of said strip and to any transverse movements thereof, allowing greater precision in processing.
  • the materials used may be any according to the requirements and the state of the art.

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  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Registering, Tensioning, Guiding Webs, And Rollers Therefor (AREA)
  • Paper (AREA)
  • Spinning Or Twisting Of Yarns (AREA)
  • Control Of Metal Rolling (AREA)
  • Control Of Position Or Direction (AREA)
  • Metal Rolling (AREA)

Claims (14)

  1. Vorrichtung zur Einstellung der Führungen für den Bandeinlauf in ein Walzwerkgehäuse, welches aufweist: Wenigstens ein Paar von sich gegenüberliegenden Führungen (2, 3), welche geeignet sind, die Position des Bandes, das in das Gehäuse eintritt, einzustellen und die in Bezug auf Position und Kraft durch jeweilige Betätigungsmittel betätigt werden; und Positions- und Kraft-/Druckübertragungsmittel (6, 7, 8, 9), welche mit den Betätigungsmitteln verbunden sind; und eine elektronische Einstelleinheit (14), welche geeignet ist, Signale von den Positions- und Kraft/Druckübertragungsmitteln zur Regelung der Betätigungsmittel zu empfangen, um die Führungen in der korrekten Lage in Bezug auf das Band zu halten und eine Kraft auf die Kanten des Bandes auszuüben, welche gesteuert ist abhängig von Parametern in Bezug auf die Position, Breite und Dicke des Bandes, welche durch die Übertragungsmittel detektiert werden; wobei jede der Führungen einen Zylinder mit einem entsprechenden Kolben aufweist, die Betätigungsmittel aufgebaut werden durch den Kolben (17, 18) des Zylinders (4, 5); wobei jede der Führungen auf Grund der Einfügung der Kraft-/Druckübertragungsmittel mit Kraft-/Druckvergleichsmitteln verbunden ist, welche wiederum ein Kraft-/Druckrückmeldungssignal für die entsprechende Führung (2, 3), welche zu betätigen ist, abgeben, wobei die elektronische Einstelleinheit (14) als Eingabe für jeden Betätigungszylinder (4, 5) ein Lagerückmeldungssignal erhält, welches sich auf den Kolben des Zylinders bezieht, welches von Positionsübertragungsmitteln (6, 7) herkommt; ein Maximal-Kraft-Referenzsignal; und ein Kraftrückmeldungssignal, das von den Vergleichsmitteln herkommt, welche mit den Druck/Kraftübertragungsmitteln verbunden sind; wobei die elektronische Einstelleinheit ferner ein Positionsreferenzsignal empfängt, welches durch Teilen der Summe der Signale, die sich auf die Bandbreite und die Toleranz beziehen, oder vom maximalen Führungsöffnungsreferenzsignal, und der Signale, das Vorhandensein/die Abwesenheit des Bandes anzeigen und/oder der Signale, welche die Ausgabe der Sensoren (19, 20) zur Detektion der Bewegung oder des Vorhandenseins des Bandes angeben, durch zwei erhalten wird.
  2. Vorrichtung nach Anspruch 1, dadurch gekennzeichnet, dass die gesteuerte Kraft ferner abhängig von einem Parameter bestimmt wird, der die Materialart unterscheidet, aus welcher das Band hergestellt ist.
  3. Vorrichtung nach Anspruch 1, dadurch gekennzeichnet, dass die Führungen wechselweise agieren, um sich zu schließen oder zu öffnen, gemäß der Position des Bandes in Bezug auf eine Mittellinie, welche eine ideale Bahn für den Bandeinlauf in das Gehäuse vorgibt.
  4. Vorrichtung nach Anspruch 1, dadurch gekennzeichnet, dass jede der Führungen ferner ein Servoventil umfasst, ein Proportionalventil, einen pneumatischen, hydraulischen oder elektrischen Motor.
  5. Vorrichtung nach einem der vorhergehenden Ansprüche, dadurch gekennzeichnet, dass die Einstelleinheit mittels Betätigem mit jeweiligen Ventilen verbunden ist, mit modulierter elektrischer Steuerung zur Steuerung der Führungen.
  6. Vorrichtung nach einem der vorhergehenden Ansprüche, dadurch gekennzeichnet, dass jede der Führungen wenigstens einen Sensor (19, 20) zur Detektion der Bewegung oder des Vorhandenseins aufweist, so angeordnet, dass er den Kanten des Bandes gegenüberliegt.
  7. Vorrichtung nach einem oder mehreren der vorhergehenden Ansprüche, dadurch gekennzeichnet, dass die Einstelleinheit Rampenerzeugungsmittel aufweist, welche als Eingabe das Positionsreferenzsignal empfangen und die mit Mitteln zur Einstellung der Position des Kolbens des Betätigungszylinders verbunden sind, welche wiederum mit Beschränkungsmitteln verbunden sind, welche geeignet sind, erste Betätigungsmittel anzutreiben zur Steuerung des entsprechenden Ventils, das durch die modulierte elektrische Steuerung betätigt wird.
  8. Vorrichtung nach einem der vorhergehenden Ansprüche, dadurch gekennzeichnet, dass sich die Signale auf die Bandbreite, Banddicke und Art des Materials des Bandes beziehen und mittels einer Korrelationsfunktion ein Kraftschwellwertsignal bestimmen, wobei das Kraftschwellwertsignal von den tatsächlich gemessenen Kraft/Drucksignalen subtrahiert wird, um ein Kraftfehlersignal für jede der Führungen zu erhalten.
  9. Vorrichtung nach Anspruch 8, dadurch gekennzeichnet, dass sie Mittel aufweist, welche dazu geeignet sind, das Senden des Kraftfehlersignals zum Bandpositionseinstellmittel zu ermöglichen, gemäß einem Schwellwert, welcher durch doppelte Schwellwertmittel eingestellt wird, um die Bewegungsrichtung einer Führung zu ermitteln, und der Führung, die derselben in Bezug auf die Mittellinie gegenüber liegt.
  10. Vorrichtung nach Anspruch 8 oder 9, dadurch gekennzeichnet, dass das Kraftfehlersignal mit geändertem Vorzeichen gesendet wird, zu dem Mittel zur Einstellung der Führung, die gegenüber derjenigen liegt, von welcher das Kraftfehlersignal erhalten wird, um eine Bewegung dieser Führung zu erhalten im selben Ausmaß, aber in der in Bezug auf die Mittellinie entgegen gesetzten Richtung.
  11. Vorrichtung nach einem der Ansprüche 5 bis 10, dadurch gekennzeichnet, dass sie Mittel zur Kompensation der Verstärkung der Ventile aufweist, die durch modulierte elektrische Steuerung betätigt werden als Funktion der Kraft, wobei die Mittel als Eingabe tatsächlich gemessene Kraft/Drucksignale empfangen und verbunden sind mit Mitteln zur Einstellung der Position der Führungen.
  12. Vorrichtung nach einem der vorhergehenden Ansprüche, dadurch gekennzeichnet, dass die Sensoren zur Detektion des Vorhandenseins der Kanten des Bandes Kantenpräsenzsignale abgeben, welche zu Integratormitteln gesendet werden, um die Mittel zur Justage der Position der Führungen anzutreiben und ihre Bewegung in eine Richtung oder die andere Richtung in Bezug auf die Mittellinie als Funktion der Bewegung des Bandes zu bestimmen.
  13. Verfahren zur Einstellung von Führungen für den Bandeinlauf in ein Walzwerkgehäuse, aufweisend die Schritte, die bestehen in:
    Anordnung einer ersten Führung (2) und einer zweiten Führung (3) an den Kanten eines zu walzenden Bandes (1), mit entsprechenden Betätigungsmitteln (4, 5, 17, 18), die mechanisch in Kontakt mit den Führungen (2,3) angeordnet sind;
    Steuerung der Position des Bandes in Bezug auf die Führungen, um es zentriert zu halten in Bezug auf eine Mittellinie, welche eine ideale Bahn für den Einlauf des Bandes in das Gehäuse vorgibt.
    Steuerung der Position der Führungen, um sie öffnen oder zu schließen in Bezug auf die Kanten des Bandes gemäß Signalen, die sich auf den Druck/die Kraft beziehen, welche durch das Band auf die Führungen ausgeübt wird, und auf ein Positionsreferenzsignal, wobei das Positionsreferenzsignal erhalten wird durch Teilen der Summe der Breite des Bandes und der Positionstoleranz in Bezug auf die Führungen (2, 3), oder eines Wertes für die maximale Öffnung der Führungen, durch zwei ,wobei das Kraft/Drucksignal erhalten wird mittels einer Funktion zur Korrelation der Breite des Streifens, seiner Dicke und des Materialcodes, aus welchem das Band hergestellt ist.
  14. Verfahren nach Anspruch 13, dadurch gekennzeichnet, dass das Öffnen oder Schließen der Führungen in koordinierter Weise für jede Führung durchgeführt wird, wobei die Richtung der Bewegung der zwei Führungen beiderseitig entgegengesetzt ist in Bezug auf die Mittellinie.
EP98204393A 1997-12-24 1998-12-23 Vorrichtung und Verfahren zur Einstellung der Führungen für den Bandeinlauf in ein Walzwerk Expired - Lifetime EP0925854B1 (de)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
IT97MI002879A IT1296906B1 (it) 1997-12-24 1997-12-24 Dispositivo di regolazione delle guide di ingresso del nastro in un laminatoio
ITMI972879 1997-12-24

Publications (3)

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EP0925854A2 EP0925854A2 (de) 1999-06-30
EP0925854A3 EP0925854A3 (de) 2002-04-03
EP0925854B1 true EP0925854B1 (de) 2005-03-23

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EP (1) EP0925854B1 (de)
AT (1) ATE291501T1 (de)
DE (1) DE69829454T2 (de)
ES (1) ES2241099T3 (de)
IT (1) IT1296906B1 (de)

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EP0925854A3 (de) 2002-04-03
EP0925854A2 (de) 1999-06-30
DE69829454T2 (de) 2006-04-13
ITMI972879A1 (it) 1999-06-24
IT1296906B1 (it) 1999-08-02
DE69829454D1 (de) 2005-04-28
ES2241099T3 (es) 2005-10-16

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