EP0375095B1 - Procédé et dispositif pour le réglage de la largeur de bande lors du laminage de bandes à chaud - Google Patents

Procédé et dispositif pour le réglage de la largeur de bande lors du laminage de bandes à chaud Download PDF

Info

Publication number
EP0375095B1
EP0375095B1 EP89250130A EP89250130A EP0375095B1 EP 0375095 B1 EP0375095 B1 EP 0375095B1 EP 89250130 A EP89250130 A EP 89250130A EP 89250130 A EP89250130 A EP 89250130A EP 0375095 B1 EP0375095 B1 EP 0375095B1
Authority
EP
European Patent Office
Prior art keywords
strip
stand
thickness
width
supply
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
Application number
EP89250130A
Other languages
German (de)
English (en)
Other versions
EP0375095A2 (fr
EP0375095A3 (fr
Inventor
Reinhold Dorna
Ulrich Klaffehn
Wolfgang Köhler
Bruno Kott
Günter Menzel
Winfried Prof. Dr. Speth
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.)
Preussag Stahl AG
Original Assignee
Preussag Stahl 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
Priority claimed from DE19883843731 external-priority patent/DE3843731A1/de
Priority claimed from DE19883843730 external-priority patent/DE3843730C2/de
Application filed by Preussag Stahl AG filed Critical Preussag Stahl AG
Publication of EP0375095A2 publication Critical patent/EP0375095A2/fr
Publication of EP0375095A3 publication Critical patent/EP0375095A3/fr
Application granted granted Critical
Publication of EP0375095B1 publication Critical patent/EP0375095B1/fr
Anticipated expiration legal-status Critical
Expired - Lifetime legal-status Critical Current

Links

Images

Classifications

    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B21—MECHANICAL METAL-WORKING WITHOUT ESSENTIALLY REMOVING MATERIAL; PUNCHING METAL
    • B21B—ROLLING OF METAL
    • B21B37/00—Control devices or methods specially adapted for metal-rolling mills or the work produced thereby
    • B21B37/48—Tension control; Compression control
    • B21B37/50—Tension control; Compression control by looper control
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B21—MECHANICAL METAL-WORKING WITHOUT ESSENTIALLY REMOVING MATERIAL; PUNCHING METAL
    • B21B—ROLLING OF METAL
    • B21B37/00—Control devices or methods specially adapted for metal-rolling mills or the work produced thereby
    • B21B37/16—Control of thickness, width, diameter or other transverse dimensions
    • B21B37/165—Control of thickness, width, diameter or other transverse dimensions responsive mainly to the measured thickness of the product
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B21—MECHANICAL METAL-WORKING WITHOUT ESSENTIALLY REMOVING MATERIAL; PUNCHING METAL
    • B21B—ROLLING OF METAL
    • B21B37/00—Control devices or methods specially adapted for metal-rolling mills or the work produced thereby
    • B21B37/16—Control of thickness, width, diameter or other transverse dimensions
    • B21B37/22—Lateral spread control; Width control, e.g. by edge rolling
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B21—MECHANICAL METAL-WORKING WITHOUT ESSENTIALLY REMOVING MATERIAL; PUNCHING METAL
    • B21B—ROLLING OF METAL
    • B21B37/00—Control devices or methods specially adapted for metal-rolling mills or the work produced thereby
    • B21B37/72—Rear end control; Front end control
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B21—MECHANICAL METAL-WORKING WITHOUT ESSENTIALLY REMOVING MATERIAL; PUNCHING METAL
    • B21B—ROLLING OF METAL
    • B21B2261/00—Product parameters
    • B21B2261/02—Transverse dimensions
    • B21B2261/06—Width
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B21—MECHANICAL METAL-WORKING WITHOUT ESSENTIALLY REMOVING MATERIAL; PUNCHING METAL
    • B21B—ROLLING OF METAL
    • B21B2271/00—Mill stand parameters
    • B21B2271/02—Roll gap, screw-down position, draft position

Definitions

  • the invention relates to a method and a device for regulating the strip width in hot strip rolling according to the preambles of claims 1 and 9.
  • Hot strip rolling on modern continuous rolling mills is intended to set the finished geometry of the strip, which is predetermined within narrow tolerances, in addition to influencing the technological characteristics of the strip through controlled thermomechanical rolling.
  • rolling mills can be equipped with strip tension control by means of speed adjustment and / or loop lifters, which, in addition to a roll gap control and rolling force measurement and strip thickness measurement, enable control of the rolling mill (Iron and Steel Engineer, 9/84, pages 45-51) .
  • This publication also describes in detail the functioning of a load-dependent control of the roll gap height (bearing play and stand expansion compensation) and the possibility of dispensing with loop lifters between the first stands of the finishing relay, the loop lifters being controlled by a minimum tension control due to known rolling forces and motor torques and the resulting change in speed Work rolls to be replaced.
  • JP-A-63-068207 describes a method for width control of tandem rolling processes in which the width control does not take place before the last pass and there is no strip supply control.
  • the looper is designed to be movable. This results in the need for complicated control technology.
  • the measurement signal obtained must be compensated for by the angle and the acceleration.
  • the mass flows at the inlet and outlet of the finished scale are the same.
  • the parameters of width, thickness, speed and weight of the strip change during the course of the method.
  • the parameters can be measured directly on the rolling mill.
  • the weight as a function of the rolling temperature and the type of material can only be recorded as an implicit statistical variable during rolling.
  • the change in weight of approx. 0.1% during hot rolling is negligible.
  • the invention takes into account the knowledge that the strip supply between the stands has to be regulated in order to achieve a stable operating state during hot rolling.
  • the rolling mill If you think of the rolling mill as a controlled system, to which the control loops for the nominal guide values of speed and idle roll gap or load roll gap are assigned, you get the rolling forces, the rolling moments, the loop lifting angles, the resulting strip thickness and the exit speed as important output signals.
  • the speeds of the rolls and the nip feeds are available as control values. The speeds affect the loop lifter angles and the material flow speed; the roll gap feed also influences the loop lifter angle, the material flow speed and the resulting strip thickness.
  • the variation in the strength of the strip as a function of acts primarily as a disturbance variable Material type and temperature. This also includes so-called skidmarks (rail shadows) from slab heating. Irregularities in the slitting or roughing of slabs, as well as the lack of side upsetting units in the roughing mill, also result in bandwidth fluctuations.
  • the existing loop control could be used by correcting the speed of the work rolls in front of or behind the loop in question, in order to correct the bandwidth by increasing or decreasing the tape tension and thus the tape supply in the loop.
  • the control signals for this belt supply control are generated by a width controller, which in turn receives signals from one or more bandwidth measurements, compares the measured values with the setpoints and, if there are deviations from the setpoint, applies a signal to the belt supply controller so that the strip tension is changed.
  • the width measurement is carried out as close as possible behind the last frame, preferably with a Diode line camera, which register the strip edges as a contrast to a counter light source under the hot strip.
  • the strip width is then regulated in such a way that the strip tension controller determines the strip tension before the last stitch, determined by the reaction force to a fixed deflection roller under the hot strip, and the change signal from the width regulator in such a way that the roll gap of the last stand is changed.
  • the hot strip is constricted or relieved and thus becomes wider.
  • a change in the width also results in a change in the thickness, at least within limits, so that the final thickness of the strip is sensibly recorded and changes in thickness are corrected using a thickness control loop on the last stand.
  • the thickness controller can apply a correction signal for the necessary roll gap height to the automatic load gap control device. Through this procedure, the tape supply is adjusted to the requirements in a controlled manner.
  • a width measurement is also installed in front of the penultimate frame, so that the bandwidth between the last two stitches can be controlled.
  • a width measurement at both points enables the result of the width correction based on the first measurement to be checked and corrected more precisely.
  • the width correction can also be carried out between the first two stitch decreases or the width correction can be divided between the two sections of the finishing scale mentioned, so that larger fluctuations in the width can be corrected without excessive undesired control strokes occurring.
  • the usual master setpoint for the position control loop "empty roll gap" after the strip has entered the first stand is replaced by actuating signals from the individual strip supply controllers.
  • the strip supply controllers then control the mass flow, mathematically the volume flow, in the finishing line for the hot strip section with the exception of the strip end.
  • the well-known automatic load gap control device replaces the strip supply control.
  • the current actual values of the strip thickness or the roll gap are taken over bumplessly as setpoints in order to prevent the control loops from settling again.
  • For the individual primary independent band supply regulators use different indicators as control variables.
  • a setpoint deviation or the actual value for a specific strip supply of a section of the finished scale provides either the strip tension determination or the angle measurement of the loop lift deflection.
  • the regulation of the first scaffold differs from this.
  • the thickness and the speed of the incoming strip can be measured - assuming the permissible assumption that there is currently a constant strip width - a mass flow equivalent.
  • the roll gap can be adjusted on the first stand so that the mass flow, mathematically simplified as a product of the thickness and speed, remains constant due to the backflow of the material.
  • the loop control between the front stands can be replaced by a tension control of the belt. This results in a relatively good flatness of the belt. This enables the use of a thickness measuring system behind the first stand and thus the additional possibility of regulating the thickness of the hot strip on the first stand.
  • the method of radio transmission of strain gauge torque measurements can be used to determine the strip tension between the stands. Compared to the torque determination from the current and voltage values of the roller drives, the DMS method detects the torsional moments directly on the work roller shaft without loss. The results are then available without delay for the train calculation due to the radio transmission.
  • the selection of the most suitable indicators which indicate a variation of the mass flow or band supply in front of the scaffolding, is made according to their most favorable properties with regard to the conditions: lowest investment costs, greatest control speed and best effect on the band geometry. It has proven to be advantageous to keep the sling lifter angle as constant as possible, because this prevents difficulties during adjustment that result from the non-angular force effect of the sling lifter on the belt.
  • a thickness regulation supplementing the strip supply regulation can be used.
  • the actual thickness value measured with a radiation measuring device - gamma emitter cesium 137 - is fed to a thickness controller, which, if necessary, can generate two control signals correlating to the measure of the deviation from the target thickness.
  • the thickness controller then acts on the load roll gap control.
  • the roll gap control variable is used for the strip supply control, another solution makes sense.
  • a change in thickness can be recorded as a trend in the thickness measuring device behind the finished scale and thus by changing the speed trend of the work rolls between two scaffolding groups of the finished scale, the strip supply can be increased or decreased locally with the effect that the strip supply regulator intervenes and the strip thickness changes.
  • a correction signal - delayed to adapt to the higher control speed of the roll gap control circuit - can be sent to the roll gap controller of the stand concerned, so that the strip supply actually does not change.
  • the width control by means of roll gap adjustment is included in this concept.
  • the width controller mentioned at the outset sends a signal to the belt supply controller of the last stand, which in turn then changes the tension by adjusting the Roll gap generated.
  • the width controller With this fast dynamic control, the width fluctuations can be corrected without the slower thickness control providing speed compensation. Otherwise the thickness controller must also receive a feedforward control.
  • the last stitch acceptance must be designed in such a way that it is greater in percentage than the bandwidth fluctuation to be corrected.
  • FIG. 1 shows the change in the specific tensile stress in the hot strip 10 over the angular position (looper angle) of a loop lifter (looper) at 4 to 10 bar fluid pressure (looper pressure) of the lifting cylinder of the loop lifter. Every change in the angle of the sling lifter causes tension fluctuations in the belt. With the tape supply control and the tape tension changes are significantly less than with the conventional loop control.
  • Fig. 2 shows the situation on the finishing line of a rolling mill for hot strip 10 with seven rolling stands 1 ... 7, four swiveling loop lifters 12 ... 15 and a vertically adjustable and lockable deflection roller 16 with force measuring device 9.
  • the drives, measuring devices and actuators are not all shown for the sake of clarity.
  • Each scaffold has a belt supply controller BVR and an additional thickness controller DR is installed on the last scaffold.
  • each stand also has a position controller PR and an automatic load roll gap control AGC, which receives the roll gap h currently calculated from the roll force f and the displayed position s of the rolls from a roll gap computer HR.
  • All of the setpoints for the roll speeds NL are predefined by a master setpoint calculator (not shown) and, during the rolling, tend to be ramped in accordance with the desired pass schedule and the desired temperature speed-up.
  • Speed controllers DNR ensure that the speeds comply with their current setpoints N 1 ... N 7.
  • the setpoints of the roll gap heights SL are also specified by the master setpoint computer before the start of the roll. They have to be readjusted continuously during rolling in order to adapt to the material flow or strip supply.
  • the necessary supply signals delta S are provided by the belt supply controller BVR.
  • Each belt supply controller BVR gets its actual value from that in the respective scaffold 1 ... 7 incoming piece of tape, while its setpoint SL is constant.
  • the physical quantity used as the actual value is in all cases a measure of the supply of strip volume (mass supply) in front of the stand and after the previous stand.
  • the belt supply controllers BVR thus regulate a constant belt supply between stands 1 ... 7.
  • the nominal thickness H Z is used as the target value and the current thickness h Z as the actual value. Strictly speaking, this band supply controller BVR is only a thickness controller. It can be controlled by the thickness h 0.
  • loop lifter angles a12 ... a15 serve as the actual value for the belt supply controller BVR. Each angle is a measure of the tape length in stock.
  • the tensile force z 1 or z 6 in the incoming strip section is used as the actual value for the respective strip supply controller BVR.
  • the tensile force indicates the supply of tape that is available when the material plastically deforms. With a low pulling force the stock is larger than with a large pulling force.
  • the methods for determining the tensile forces z 1 and z 6 are very different for the stands 2 and 7.
  • the tensile force z 1 in front of the stand 2 is determined from the measured values of the rolling force f and the torque m of the work roll shaft in the stand 1 before and after the run-in of the belt 10 in the scaffold 2 calculated in the belt tension calculator ZB.
  • the torque m is determined by strain gauges, not shown, and transmitted by radio to the belt tension computer ZB.
  • a deflection roller 16 equipped with a force sensor 9 is used. For this purpose, it is hydraulically moved vertically into its target position immediately after tapping the scaffold 7 and blocked there.
  • the procedure for finishing a hot strip is regulated as follows: After the strip 10 has entered the stand 1, the thicknesses h 0 and h Z are determined using the thickness gauges DO, DZ and the torque m and the rolling force f or the quotient m / f. The thickness is sent to the BVR, which takes over the further regulation on scaffold 1. After the belt 10 has entered the stand 2, the measured values m and f and their quotient change. From the change, the strip tension or tensile force z 1 is determined in the strip tension computer ZB and the strip supply controller BVR is thus applied to stand 2, which subsequently controls the load roll gap height s 2. The control is carried out via the position controller PR.
  • the loop lifter 12 After the stand 3 has been tapped, the loop lifter 12 is moved into the desired position; a setpoint deviation of a 12 leads to a change in the load roll gap height s 3 on the stand 3 through the BVR strip supply controller.
  • the deflection roller 16 After tapping the Scaffolding 7, the deflection roller 16 is moved into the desired position, as before, and locked there.
  • Force sensor 9 determines the tensile force z 6 and thus acts on the belt supply controller BVR on the scaffold 7. All belt supply regulators BVR provide a constant strip supply between the stands by possibly changing the roll gaps, with the result that the loop lifters 12 ... 15 vibrate only within narrow limits. As a result, with "correct" presetting of the strip thickness HZ, very small deviations to be corrected are achieved, which are then corrected by the very fast roll gap adjustment.
  • the desired thickness tolerances behind the finished scale can be exceeded due to disturbances, for example as a result of temperature or thickness differences in the preliminary strip. This is determined by a final thickness measurement.
  • the strip supply control is supplemented by a control of the exit thickness h E.
  • the mode of operation of the thickness control with the aid of the thickness controller DR has been derived from the following consideration:
  • the thickness h of the strip 10 emerging from the roll gap is obtained by dividing the entry thickness into the stand by the extension factor by which the strip length increases.
  • h 0 is the entry thickness and h E the exit thicknesses, v 0 the entry speed in stand 1 and v 7 the exit speed from stand 7.
  • the quotient v 0 / v 7 is the reciprocal extension factor.
  • the quantities h 0, v 0 and v 7 are suitable according to the equation. However, these three variables act on the exit thickness h E at different speeds in this control loop. The equation only describes the steady state equilibrium; the dynamic behavior is different.
  • the entry thickness h 0 has the slowest effect on the exit thickness h E.
  • the running time of the belt 10 through all the stands has a delaying effect here.
  • the influence of the speed v 0 is at least ten times faster.
  • the thickness controller DR supplies a correction signal delta v 7, which is added positively or negatively to the speed specified by the computer via the roll speed N 7 . Instead, the temperature speed-up for frameworks 1 to 6 could be changed by the value delta v 7.
  • either the product calculated from the measured values h 0 and v 0 at the entrance to the rolling mill can be regulated to a constant value by the strip supply controller of stand 1, or, as in FIG. 2, shown, the product h Z x v1 are kept constant by keeping v1 approximately constant by the speed controller of the first stand.
  • the measurement of the thickness values h 0 and h Z could therefore also be replaced by the measurement of the current thickness h 0 with a thickness gauge DO and the current run-in speed v 0 without changing the control principle.
  • the belt supply controller BVR can of course only supply their control signals delta s for the position controller PR as long as the belt supply indicators flow from the respective measuring sensors.
  • the corresponding BVR strip supply controller must be deactivated.
  • the load roll gap control AGC acted upon by the rolling force takes over the further regulation of the roll gap in a manner known per se.
  • the current roll gap value is accepted without bumps. From the illustration in FIG. 2 it follows that the switchover from stand 2 to AGC takes place as soon as the strip 10 leaves the stand 1, because the strip supply controller BVR then no longer receives any tension values z 1.
  • the loop lifters have to be deactivated; correspondingly, no true force effect can be measured for the scaffold 7 on the deflection roller 16.
  • the width meter 11 measures the bandwidth b 7 after the last stitch acceptance in the frame 7.
  • the width controller BR calculates a control signal delta Z and thus acts on the belt supply controller BVR of the scaffold 7. If the bandwidth b 7 is too large, the signal delta Z will result in a tension value being applied to the controller BVR with the tension tension z 6 , who then detects an excessively large strip supply and opens the roll gap on stand 7 by the value delta S, with the result that the tensile stress in the strip is increased and the strip width is reduced.
  • the control effect is faster if, as shown, a further width meter 8 in front of the scaffold 6 precontrols the current bandwidth BR, so that width differences can be corrected locally without loss of time by swinging in the control loop.
  • the process sequence on the rolling mill can thus be optimally regulated and the effort for loop lifters, measuring devices and control systems is kept within limits.
  • Tests with this control system have shown an improvement in the strip width tolerance of 20 mm and the tolerances for the strip thickness h E to values of plus / minus 0.04 mm to the target thickness of 1.5 mm.

Landscapes

  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Control Of Metal Rolling (AREA)
  • Metal Rolling (AREA)

Claims (9)

  1. Procédé pour le réglage en continu de la largeur de bande lors du laminage de finition des bandes laminées à chaud dans un train de laminoir à plusieurs cages, dans lequel la largeur de bande est mesurée au moins derrière l'étage de finition et la largeur de bande derrière la dernière cage, et les variations d'épaisseur sont éliminées par un circuit de régulation d'épaisseur à la dernière cage, caractérisé par la combinaison des étapes de procédé suivantes :
    - la largeur de bande (b5, b7) est mesurée en continu immédiatement après la dernière passe et avant l'avant-dernière passe,
    - les valeurs de mesure sont envoyées à un régulateur de largeur (BR) avec commande pilote, un écart par rapport à la valeur de consigne y est éventuellement constaté et cet écart sert à déterminer un signal de variation pour la force de traction (Z) dans la bande (10) avant la dernière passe,
    - un signal indicateur proportionnel à la force de traction (z6) est capté,
    - le signal indicateur et le signal de variation sont envoyés à un régulateur de réserve de bande (BVR), qui modifie la réserve de bande avant la dernière cage (7) par modification de la ou des hauteur(s) de l'intervalle entre cylindres de cette cage.
  2. Procédé selon la revendication 1, caractérisé en ce que la réserve de bande de toutes les cages (1....7) est réglée.
  3. Procédé selon la revendication 2, caractérisé en ce que, pour le réglage de la ou des hauteur(s) de l'intervalle entre cylindres après l'entrée de la bande laminée à chaud dans une cage, la valeur de consigne de l'épaisseur de la bande est envoyée à un indicateur de réserve de bande et est transmise à un indicateur de force de laminage si la bande (10) sort de la cage précédente (1....6).
  4. Procédé selon l'une des revendications 1 à 3, caractérisé en ce que l'épaisseur finale (hE) de la bande laminée à chaud (10) est réglée en outre par ajustage des paramètres des intervalles entre les cylindres ou vitesse de rotation des cylindres de laminage.
  5. Procédé selon l'une des revendications 1 à 4, caractérisé en ce que, selon le même principe, la largeur de bande est réglée en outre entre les deux premières passes.
  6. Procédé selon l'une des revendications 1 à 5, caractérisé en ce que l'on utilise, comme signal indicateur pour la force de traction, la force de réaction de la bande (10) sur un rouleau de renvoi (16) à position réglable.
  7. Procédé selon les revendications 1 à 6, caractérisé par l'utilisation d'une combinaison de différents indicateurs pour la réserve momentanée de bandes aux cages d'un étage de finition d'un laminoir de bandes à chaud, dans lequel
    - on détermine, pour la première cage (1), la vitesse (vO) ainsi que la largeur de bande (hO) avant ou la largeur de bande (hO) avant et derrière (hZ) la cage (1),
    - on détermine, pour une ou plusieurs cages (2), le moment de rotation (m) de l'arbre des cylindres de laminage et la force de laminage (f) dans la cage précédente (1),
    - on définit, pour au moins la dernière cage (7), la force de traction dans la bande (z6) avant la cage (7), par mesure de la force au moyen d'un rouleau de renvoi (16),
    - on détermine, pour les autres cages (3....6), l'écartement (a) d'une came à boucle (12... 15) disposée avant la cage
    - on détermine l'épaisseur (hO, hZ, hE) et la largeur (b5, b7) de la bande laminée à chaud (10) par mesure de rayonnement sans contact,
    pour régler la largeur de bande (b7) par ajustage de la ou des hauteur(s) de l'intervalle entre les cylindres d'une cage (2 ou 7) d'un ou de plusieurs cylindres de laminage.
  8. Procédé selon les revendications 1 à 7, caractérisé par l'utilisation de la transmission radio des résultats de la mesure directe du moment de rotation au moyen de bandes de mesure d'allongement sur l'arbre d'entraînement des cylindres de laminage des cages de l'étage de finition (1...7) d'un train de laminoir pour déterminer sans ralentissement la tension de traction (z1) dans la bande laminée à chaud (10), afin de régler la largeur de bande au cours du laminage à chaud.
  9. Etage de finition d'un train de laminage de bandes à chaud avec des dispositifs de mesure, de commande et de régulation, pour déterminer et influencer les paramètres opératoires, afin d'utiliser le procédé selon l'une des revendications 1 à 8, dans lequel
    a) on dispose un appareil de mesure de l'épaisseur de bande (DE) derrière la dernière cage,
    b) on dispose un régulateur d'épaisseur (DR) pour l'élimination des variations d'épaisseur,
    c) on dispose un appareil de mesure de largeur de bande derrière la dernière cage, caractérisé par
    d) au moins un rouleau de renvoi (16) non oscillant et réglable en hauteur avant la dernière cage (7) et un dispositif de mesure de force (9) qui y est assemblé, et
    e) un régulateur de réserve de bande (BVR) connecté à l'appareil de mesure de force (9) et à un régulateur de largeur (BR) qui agit sur la ou les hauteur(s) d'intervalle entre les cylindres,
    f) un appareil de mesure de largeur de bande disposé avant la dernière cage,
    g) le régulateur de largeur (BR) est conçu de façon à déterminer les écarts par rapport à la valeur de consigne de la largeur de bande, et le régulateur de réserve de bande (BVR) est commandé par les signaux de variation pour la tension de bande avant la dernière cage,
    h) l'appareil de mesure de force fournit un signal indicateur proportionnel à la tension de bande au régulateur de réserve de bande (BVR),
    i) le régulateur de réserve de bande (BVR) agit sur base des signaux du régulateur de largeur de bande (BR) et de l'appareil de mesure de force sur la hauteur de l'intervalle entre les cylindres de la dernière cage afin de corriger la réserve de bande et, ainsi, la tension de bande avant la dernière cage, de façon que la largeur de bande soit réglée à la valeur de consigne.
EP89250130A 1988-12-22 1989-12-22 Procédé et dispositif pour le réglage de la largeur de bande lors du laminage de bandes à chaud Expired - Lifetime EP0375095B1 (fr)

Applications Claiming Priority (4)

Application Number Priority Date Filing Date Title
DE3843731 1988-12-22
DE19883843731 DE3843731A1 (de) 1988-12-22 1988-12-22 Verfahren und vorrichtung zum warmbandwalzen
DE19883843730 DE3843730C2 (de) 1988-12-22 1988-12-22 Verfahren und Vorrichtung zum Regeln der Bandbreite beim Warmbandwalzen
DE3843730 1988-12-22

Publications (3)

Publication Number Publication Date
EP0375095A2 EP0375095A2 (fr) 1990-06-27
EP0375095A3 EP0375095A3 (fr) 1992-12-23
EP0375095B1 true EP0375095B1 (fr) 1996-01-31

Family

ID=25875619

Family Applications (2)

Application Number Title Priority Date Filing Date
EP89250129A Expired - Lifetime EP0375094B1 (fr) 1988-12-22 1989-12-22 Procédé et dispositif pour le laminage de bandes à chaud
EP89250130A Expired - Lifetime EP0375095B1 (fr) 1988-12-22 1989-12-22 Procédé et dispositif pour le réglage de la largeur de bande lors du laminage de bandes à chaud

Family Applications Before (1)

Application Number Title Priority Date Filing Date
EP89250129A Expired - Lifetime EP0375094B1 (fr) 1988-12-22 1989-12-22 Procédé et dispositif pour le laminage de bandes à chaud

Country Status (3)

Country Link
EP (2) EP0375094B1 (fr)
AT (2) ATE133591T1 (fr)
DE (2) DE58909588D1 (fr)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP2998040A1 (fr) 2014-09-17 2016-03-23 Primetals Technologies Germany GmbH Réglage de largeur d'une ligne de fabrication

Families Citing this family (12)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE19543605A1 (de) * 1995-11-23 1997-05-28 Schloemann Siemag Ag Verfahren zur Querschnittsregelung von Walzgut
WO1999024184A1 (fr) * 1997-11-07 1999-05-20 Siemens Aktiengesellschaft Procede et dispositif servant a laminer une bande de metal
JP6237928B2 (ja) * 2014-11-05 2017-11-29 新日鐵住金株式会社 鋼板の製造方法および鋼板の製造装置
CN108568452B (zh) * 2017-03-11 2020-04-28 深圳格林德能源集团有限公司 一种锂离子电池全自动闭合式三辊极片辊轧机
DE102017108786A1 (de) * 2017-04-25 2018-06-14 Muhr Und Bender Kg Verfahren und Vorrichtung zum Ermitteln der Planheit von Bandmaterial und Bearbeitungsanlage mit einer solchen Vorrichtung
CN107030120B (zh) * 2017-05-31 2018-11-09 南京钢铁股份有限公司 船用钢板厚度公差的精确控制方法
CN110961469B (zh) * 2019-12-19 2021-04-27 北京首钢股份有限公司 一种控制带钢头部稳定性的方法及装置
CN113522996B (zh) * 2020-04-21 2022-08-16 宝山钢铁股份有限公司 利用测宽仪对中厚板轧机侧导板自动标定的方法及其装置
CN113909307B (zh) * 2021-08-30 2024-03-15 北京首钢自动化信息技术有限公司 一种活套控制方法及装置
CN113909300A (zh) * 2021-09-26 2022-01-11 重庆钢铁股份有限公司 一种中厚板精轧机辊道节电控制***及方法
CN114653759B (zh) * 2022-04-01 2023-12-12 浙江水利水电学院 基于轧制力控制的热轧带钢宽度调节装置及方法
CN114951295B (zh) * 2022-05-05 2023-04-07 福建三宝特钢有限公司 一种基于活套控制的切分双高棒轧制***

Family Cites Families (12)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE2249366A1 (de) * 1971-10-11 1973-04-19 Hitachi Ltd Verfahren und vorrichtung zur kontrolle und steuerung der breite eines gewalzten bandes
JPS6024726B2 (ja) * 1977-03-31 1985-06-14 株式会社日立製作所 圧延機の張力制御方法
JPS5820313A (ja) * 1981-07-29 1983-02-05 Sumitomo Metal Ind Ltd 圧延機の制御方法
JPS58192606A (ja) * 1983-03-10 1983-11-10 Ishikawajima Harima Heavy Ind Co Ltd 圧延装置
JPS6130211A (ja) * 1984-07-23 1986-02-12 Fuji Electric Co Ltd 多スタンド連続圧延装置の運転制御装置
FR2568496B1 (fr) * 1984-08-01 1987-01-30 Laminage Continu Ste Lorrai Me Procede et dispositif de reglage du synchronisme dans un laminoir a produit plat.
JP2510506B2 (ja) * 1986-02-15 1996-06-26 新日本製鐵株式会社 熱間帯鋼連続仕上圧延機のスタンド間張力制御方法及び装置
JPS6368207A (ja) * 1986-09-08 1988-03-28 Kobe Steel Ltd タンデム圧延における板幅制御方法
DE3637043A1 (de) * 1986-10-30 1988-05-05 Licentia Gmbh Verfahren zum vorausbestimmten einhalten enger dickentoleranzen beim walzen von walzgut in warmbandstrassen
JPS63203209A (ja) * 1987-02-19 1988-08-23 Sumitomo Metal Ind Ltd 熱間連続圧延機の板幅制御方法
JPH01258807A (ja) * 1988-04-05 1989-10-16 Sumitomo Metal Ind Ltd タンデムミルにおける板幅制御方法
DE3828495A1 (de) * 1988-08-23 1990-03-01 Betr Forsch Inst Angew Forsch Verfahren und vorrichtung zur zugkraftregelung im walzgut zwischen walzgeruesten

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP2998040A1 (fr) 2014-09-17 2016-03-23 Primetals Technologies Germany GmbH Réglage de largeur d'une ligne de fabrication
WO2016041746A1 (fr) 2014-09-17 2016-03-24 Primetals Technologies Germany Gmbh Réglage de la largeur dans un train finisseur
US10596608B2 (en) 2014-09-17 2020-03-24 Primetals Technologies Germany Gmbh Width setting on a finishing train

Also Published As

Publication number Publication date
EP0375094A2 (fr) 1990-06-27
EP0375095A2 (fr) 1990-06-27
ATE142916T1 (de) 1996-10-15
DE58909588D1 (de) 1996-03-14
EP0375094A3 (fr) 1992-12-23
EP0375094B1 (fr) 1996-09-18
EP0375095A3 (fr) 1992-12-23
ATE133591T1 (de) 1996-02-15
DE58909734D1 (de) 1996-10-24

Similar Documents

Publication Publication Date Title
EP0121148B1 (fr) Procédé pour la fabrication de feuillard à chaud avec section et planéité de bande de haute qualité
EP0375095B1 (fr) Procédé et dispositif pour le réglage de la largeur de bande lors du laminage de bandes à chaud
EP1896200B1 (fr) Procede et dispositif pour influencer de façon ciblee la geometrie d'une ebauche de feuillard dans un train ebaucheur
DE69404527T2 (de) Walzwerk und Verfahren
DE3036997A1 (de) Verfahren zur steuerung und regelung der temperatur eines werkstueckes waehrend des walzens in einem warmbandwalzwerk
EP2603337B1 (fr) Procédé de production de laminés à l'aide d'une installation combinée de laminage direct, dispositif de commande et/ou de régulation pour une installation combinée de laminage direct, et installation combinée de laminage direct
EP2032276B1 (fr) Cage de laminage et procédé de laminage d'une tôle en bande
EP2790846B1 (fr) Procédé de traitement de produits laminés dans un laminoir
DE3109536C3 (de) Regelanordnung für ein Quarto-Metallwalzwerk
EP0515005B1 (fr) Groupe de sizing-cages
WO2013167366A1 (fr) Procédé d'usinage d'un produit à laminer et laminoir
DE3843730C2 (de) Verfahren und Vorrichtung zum Regeln der Bandbreite beim Warmbandwalzen
DE1126492B (de) Einrichtung zur Regelung der Banddicke in kontinuierlichen Warmwalzwerken
DE2459248C2 (de) Regelungs-Vorrichtung zum Ausregeln walzkraftbedingter Walzendurchbiegungen
DE102004005011B4 (de) Regelverfahren und Regler für ein Walzgerüst
EP4061552B1 (fr) Procédé, dipositif de contrôle et laminoir pour le réglage d'une température de sortie d'une bande métallique quittant un train de laminage
DE2816091A1 (de) Einrichtung zum steuern der zwischengeruestspannung eines kontinuierlichen walzwerks
DE3401894A1 (de) Verfahren zum herstellen von walzband mit hoher bandprofil- und bandplanheitsguete
EP3231522B1 (fr) Controle robuste de tension de bande
DE2263674A1 (de) Verfahren zur herstellung von bandfoermigem walzgut unter verwendung eines rechners
DE19543605A1 (de) Verfahren zur Querschnittsregelung von Walzgut
DE3843731A1 (de) Verfahren und vorrichtung zum warmbandwalzen
EP0162361B1 (fr) Dispositif de réglage de traction de la bande dans un train à feuillard à chaud
EP0181474B1 (fr) Cage de laminoir à six cylindres
WO2022152779A1 (fr) Réduction des changements d'épaisseur dus à la tension lors du laminage

Legal Events

Date Code Title Description
PUAI Public reference made under article 153(3) epc to a published international application that has entered the european phase

Free format text: ORIGINAL CODE: 0009012

AK Designated contracting states

Kind code of ref document: A2

Designated state(s): AT BE DE FR GB IT LU NL SE

17P Request for examination filed

Effective date: 19901221

RAP3 Party data changed (applicant data changed or rights of an application transferred)

Owner name: PREUSSAG STAHL AKTIENGESELLSCHAFT

PUAL Search report despatched

Free format text: ORIGINAL CODE: 0009013

AK Designated contracting states

Kind code of ref document: A3

Designated state(s): AT BE DE FR GB IT LU NL SE

17Q First examination report despatched

Effective date: 19931103

GRAA (expected) grant

Free format text: ORIGINAL CODE: 0009210

AK Designated contracting states

Kind code of ref document: B1

Designated state(s): AT BE DE FR GB IT LU NL SE

REF Corresponds to:

Ref document number: 133591

Country of ref document: AT

Date of ref document: 19960215

Kind code of ref document: T

REF Corresponds to:

Ref document number: 58909588

Country of ref document: DE

Date of ref document: 19960314

ET Fr: translation filed
ITF It: translation for a ep patent filed

Owner name: STUDIO JAUMANN

GBT Gb: translation of ep patent filed (gb section 77(6)(a)/1977)

Effective date: 19960503

PLBE No opposition filed within time limit

Free format text: ORIGINAL CODE: 0009261

STAA Information on the status of an ep patent application or granted ep patent

Free format text: STATUS: NO OPPOSITION FILED WITHIN TIME LIMIT

26N No opposition filed
PGFP Annual fee paid to national office [announced via postgrant information from national office to epo]

Ref country code: FR

Payment date: 19971110

Year of fee payment: 9

PGFP Annual fee paid to national office [announced via postgrant information from national office to epo]

Ref country code: AT

Payment date: 19971113

Year of fee payment: 9

PGFP Annual fee paid to national office [announced via postgrant information from national office to epo]

Ref country code: SE

Payment date: 19971117

Year of fee payment: 9

PGFP Annual fee paid to national office [announced via postgrant information from national office to epo]

Ref country code: GB

Payment date: 19971121

Year of fee payment: 9

PGFP Annual fee paid to national office [announced via postgrant information from national office to epo]

Ref country code: NL

Payment date: 19971126

Year of fee payment: 9

PGFP Annual fee paid to national office [announced via postgrant information from national office to epo]

Ref country code: BE

Payment date: 19971201

Year of fee payment: 9

PGFP Annual fee paid to national office [announced via postgrant information from national office to epo]

Ref country code: LU

Payment date: 19980303

Year of fee payment: 9

PGFP Annual fee paid to national office [announced via postgrant information from national office to epo]

Ref country code: DE

Payment date: 19981215

Year of fee payment: 10

PG25 Lapsed in a contracting state [announced via postgrant information from national office to epo]

Ref country code: LU

Free format text: LAPSE BECAUSE OF NON-PAYMENT OF DUE FEES

Effective date: 19981222

Ref country code: GB

Free format text: LAPSE BECAUSE OF NON-PAYMENT OF DUE FEES

Effective date: 19981222

Ref country code: AT

Free format text: LAPSE BECAUSE OF NON-PAYMENT OF DUE FEES

Effective date: 19981222

PG25 Lapsed in a contracting state [announced via postgrant information from national office to epo]

Ref country code: SE

Free format text: LAPSE BECAUSE OF NON-PAYMENT OF DUE FEES

Effective date: 19981223

PG25 Lapsed in a contracting state [announced via postgrant information from national office to epo]

Ref country code: BE

Free format text: LAPSE BECAUSE OF NON-PAYMENT OF DUE FEES

Effective date: 19981231

BERE Be: lapsed

Owner name: PREUSSAG STAHL A.G.

Effective date: 19981231

PG25 Lapsed in a contracting state [announced via postgrant information from national office to epo]

Ref country code: NL

Free format text: LAPSE BECAUSE OF NON-PAYMENT OF DUE FEES

Effective date: 19990701

GBPC Gb: european patent ceased through non-payment of renewal fee

Effective date: 19981222

PG25 Lapsed in a contracting state [announced via postgrant information from national office to epo]

Ref country code: FR

Free format text: LAPSE BECAUSE OF NON-PAYMENT OF DUE FEES

Effective date: 19990831

NLV4 Nl: lapsed or anulled due to non-payment of the annual fee

Effective date: 19990701

REG Reference to a national code

Ref country code: FR

Ref legal event code: ST

PG25 Lapsed in a contracting state [announced via postgrant information from national office to epo]

Ref country code: DE

Free format text: LAPSE BECAUSE OF NON-PAYMENT OF DUE FEES

Effective date: 20001003

PG25 Lapsed in a contracting state [announced via postgrant information from national office to epo]

Ref country code: IT

Free format text: LAPSE BECAUSE OF NON-PAYMENT OF DUE FEES;WARNING: LAPSES OF ITALIAN PATENTS WITH EFFECTIVE DATE BEFORE 2007 MAY HAVE OCCURRED AT ANY TIME BEFORE 2007. THE CORRECT EFFECTIVE DATE MAY BE DIFFERENT FROM THE ONE RECORDED.

Effective date: 20051222