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EP2188074B1 - Procédé de fonctionnement pour une batterie de laminoirs avec détection de courbure - Google Patents

Procédé de fonctionnement pour une batterie de laminoirs avec détection de courbure Download PDF

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Publication number
EP2188074B1
EP2188074B1 EP08803135A EP08803135A EP2188074B1 EP 2188074 B1 EP2188074 B1 EP 2188074B1 EP 08803135 A EP08803135 A EP 08803135A EP 08803135 A EP08803135 A EP 08803135A EP 2188074 B1 EP2188074 B1 EP 2188074B1
Authority
EP
European Patent Office
Prior art keywords
rolling
strip
rolling stand
head
stand
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.)
Active
Application number
EP08803135A
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German (de)
English (en)
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EP2188074A1 (fr
Inventor
Bernhard Weisshaar
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.)
Siemens AG
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Siemens AG
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Publication date
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Priority to PL08803135T priority Critical patent/PL2188074T3/pl
Publication of EP2188074A1 publication Critical patent/EP2188074A1/fr
Application granted granted Critical
Publication of EP2188074B1 publication Critical patent/EP2188074B1/fr
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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
    • B21B37/68—Camber or steering control for strip, sheets or plates, e.g. preventing meandering
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B21—MECHANICAL METAL-WORKING WITHOUT ESSENTIALLY REMOVING MATERIAL; PUNCHING METAL
    • B21B—ROLLING OF METAL
    • B21B2263/00—Shape of product
    • B21B2263/02—Profile, e.g. of plate, hot strip, sections
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B21—MECHANICAL METAL-WORKING WITHOUT ESSENTIALLY REMOVING MATERIAL; PUNCHING METAL
    • B21B—ROLLING OF METAL
    • B21B2273/00—Path parameters
    • B21B2273/04—Lateral deviation, meandering, camber of product
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B21—MECHANICAL METAL-WORKING WITHOUT ESSENTIALLY REMOVING MATERIAL; PUNCHING METAL
    • B21B—ROLLING OF METAL
    • B21B2273/00—Path parameters
    • B21B2273/12—End of product
    • B21B2273/14—Front end or leading end
    • 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
    • B21B37/28—Control of flatness or profile during rolling of strip, sheets or plates

Definitions

  • the present invention relates to an operating method for a rolling train having a plurality of rolling stands consecutively traversed by a belt, the belt being threaded into each of the rolling stands having a known respective head offset and a known respective upstream side head pitch, always relative to a rolling center line that a tape head of the tape from the respective rolling mill with the respective head offset, a respective outlet-side head pitch and a respective outlet-side head curvature expires.
  • the present invention further relates to a computer program comprising machine code which is directly executable by a control device of a multi-stand rolling mill and whose execution by the control means causes the control means to operate the mill train according to such an operation method.
  • the present invention further relates to a data carrier having a computer program of the type described above which is stored on the data carrier.
  • the present invention relates to a control device of a multi-stand rolling train, wherein the control device is configured such that it operates the rolling mill according to an operating method described above.
  • the present invention relates to a rolling mill, wherein the rolling train comprises a plurality of rolling stands consecutively traversed by a belt, the rolling line having a control device of the type described above, so that the rolling mill is operated in operation according to an operating method of the type described above.
  • tension differences can occur between the strip edges of the strip.
  • One of the main causes of the tension differences is a wedge in the band profile.
  • a wedge in the band profile can have different causes.
  • the strip may already have a splined profile before being rolled.
  • the wedge may be caused by rolling in the nip.
  • the band may have a wedged temperature distribution, the band may enter the nip off-center, or the nip itself may be wedge-shaped. Also combinations of these (and other) causes are possible.
  • the object of the present invention is to provide possibilities by means of which a wedge in the band is recognizable and / or avoidable and / or tension differences between the band edges are recognizable and / or avoidable, without the need for a looper with double-sided force detection.
  • the position detection device can be formed here at will, provided that it has the desired functionality.
  • the respective position detection device can be designed as a line scanner (infrared scanner, diode array scanner, etc.) or as an imaging camera. Other embodiments are possible.
  • the position detection devices are identical to one another. However, this is not mandatory. It may also be the position detection device of the intermediate frame area to intermediate frame area each formed individually.
  • the head offset and the inlet side head pitch for the respective rolling mill immediately downstream rolling mill determine the control command for the respective rolling stand immediately downstream rolling mill to determine and issue the control command at the latest when entering the tape head in the respective rolling stand immediately downstream rolling mill to the respective rolling mill immediately downstream rolling mill.
  • the control command is in this case determined so that the head offset, the outlet-side head pitch and / or the outlet-side head curvature are reduced, so that the band - centered with respect to the rolling center line.
  • the respective control command can be determined in particular such that the respective control intervention counteracts a deflection of a belt foot of the belt when the belt foot leaves the respective rolling stand.
  • the respective rolling stand and / or the rolling stand immediately downstream of the respective rolling stand can be activated at a point in time in accordance with the determined respective control intervention, to which the strip entering the respective rolling stand is subjected.
  • the respective Roll stand or the rolling stand immediately downstream of the respective rolling stand is driven in accordance with the determined respective control intervention.
  • the respective rolling stand and / or the rolling stand immediately downstream of the respective rolling stand can be activated at a point in time corresponding to the determined respective control intervention, to which the strip entering the respective rolling stand is draft-free.
  • the roll stand immediately downstream of the respective rolling stand is controlled in this case.
  • the head offset and the inlet-side head pitch of the incoming into the first rolling mill band must be known.
  • it is possible to set the head offset and / or the inlet-side head slope by means of suitable guide devices to defined values, for example, head offset and inlet side head pitch 0.
  • a combination of the two measures is possible in principle. For example, one of the two variables head offset and inlet head slope can be adjusted by a corresponding guide means to a defined value, the other value can be determined by a position detection of the tape.
  • the curvature of the strip between two immediately successive rolling stands is known by the procedure according to the invention. It is therefore possible to determine, based on the head offset and the outlet side head pitch of the tape head of a particular stand and the respective outlet side head curvature in conjunction with the known distance to the immediately downstream rolling mill, with which head offset and with which inlet side head pitch the strip enters the immediately downstream roll stand.
  • This procedure has the advantage that it can be executed very quickly.
  • the outlet-side head curvature can be determined almost simultaneously with the shrinkage of the tape head into the respective rolling stand.
  • the respective control intervention it is therefore possible, in particular, for the respective control intervention to be determined immediately after the determination of the respective outlet-side head curvature and for the respective rolling stand to be actuated immediately after the determination of the respective control intervention in accordance with the determined respective control intervention.
  • the mathematical-physical model is adapted from the corrected respective outlet-side head curvature on the basis of a deviation of the respective outlet-side head curvature determined by means of the mathematical-physical model.
  • the mathematical-physical model is thus trained, so that the determined on the basis of the mathematical-physical model exit-side head curvature of future rolled bands must be corrected less and less, the model is thus better adapted to the reality.
  • the respective outlet-side head curvature can be constant.
  • the respective outlet-side head curvature can vary with the distance from the respective rolling stand, for example be a linear function of the distance or be sectionally constant.
  • the object is further solved programmatically by a computer program having the features of claim 15 and a data carrier having the features of claim 16.
  • the computer program has machine code which is directly executable by a control device of a multi-stand rolling train and whose execution by the control device causes the control device to operate the rolling train in accordance with an operating method of the invention.
  • the data carrier is embodied according to the invention in that such a computer program is stored on it.
  • the object is further achieved device-wise by a control device of a multi-stand rolling train with the features of claim 17 and a rolling train with the features of claim 19.
  • the control device is designed such that it operates the rolling train in accordance with an operating method according to the invention.
  • the rolling train has a plurality of rolling mills, which are passed through in succession from a belt, and a control device of the last-described type, so that the rolling train is operated in operation according to an operating method according to the invention.
  • the control device is preferably designed as a software programmable control device, which executes a computer program of the type described above during operation.
  • a rolling mill has a plurality of rolling stands 1.
  • the rolling train is thus designed as a multi-stand rolling train.
  • the rolling stands 1 are run through during operation of the rolling train of a band 2 successively.
  • the rolling train furthermore has a control device 3, which controls the rolling stands 1 and other components of the rolling train during operation of the rolling train.
  • the control device 3 is designed such that in operation it operates the rolling train in accordance with an operating method which will be explained in more detail below.
  • the control device 3 can be configured as a hardwired control device, as a programmable wired control device or as a software programmable control device.
  • the control device 3 is software programmable Control device is formed, which executes a computer program 4 during operation.
  • the computer program 4 has in this case machine code 5, which is directly executable by the control device 3.
  • the execution of the machine code 5 by the control device 3 causes the control device 3 to operate the rolling train according to the operating method according to the invention.
  • the programming of the control device 3 with the computer program 4 can be done in any way.
  • the computer program 4 can already be deposited in the control device 3 within the framework of the production of the control device 3.
  • the computer-computer connection can be, for example, a connection to a LAN or to the Internet.
  • the calculator-computer connection is in the 1 and 2 not shown.
  • FIG. 1 the disk 6 shown as a CD-ROM.
  • the control device 3 first selects, in a step S1, the rolling stand 1 into which the strip 2 is threaded first. Then, in a step S2, the control device 3 controls the rolling train such that the belt 2 - relative to a rolling center line 7 (see FIG FIG. 2 and 4 ) - is threaded into the selected roll stand 1 with a known head offset V and a known inlet side head pitch SE. Due to the threading into the selected rolling stand 1 (purely factually) runs a tape head 8 of the belt 2 from the selected rolling mill 1 with the head offset V, an outlet side head slope SA and an outlet side head curvature K off.
  • the control device 3 determines the outlet-side head pitch SA on the basis of the intake-side head pitch SE and a take-off in the selected rolling stand 1.
  • vE and vA are here, based on the selected mill stand 1, the input and the discharge side speed of the belt 2.
  • the velocities vE and vA are linked to the reduction in the value of the continuity equation.
  • control device 3 determines the outlet-side head curvature K of the belt 2 in a step S4. The determination takes place on the basis of measurement data and further data. Both the measured data and the other data are related to the currently selected rolling stand 1. Possible types of detection will be discussed later possible embodiments of the present invention will be explained in more detail.
  • Step S5 the head offset V, the exit-side head pitch SA and the exit-side head curvature K of the tape head 8 are stored in the selected rolling stand 1 - assigned to this rolling stand 1.
  • Step S5 is important in the context of a possible embodiment of the present invention.
  • step S6 it is possible to determine a control intervention S immediately after determining the outlet-side head curvature K. This is illustrated in a step S6. It is also shown in step S6 that it is alternatively possible to determine the control intervention S not directly but before the threading of the belt 2 into the rolling stand 1 immediately downstream of the selected rolling stand 1. In both cases, however, step S6 is only optional and therefore in FIG. 3 shown only by dashed lines. If present, the control engagement S is determined using the exit-side head bend K, optionally with the additional use of the exit-side head slope SA and / or head offset V, if applicable. The control intervention S is hereby determined for the selected rolling stand 1 and / or for the rolling stand 1 which is immediately downstream of the selected rolling stand 1. Optionally, two mutually different control interventions S can be determined, wherein each one of the two control interventions S for the selected rolling stand 1 and for the selected rolling stand 1 immediately downstream rolling mill 1 is determined.
  • step S6 the rolling mill 1 for which the control intervention S determined in step S6 is determined is activated in a step S7 in accordance with the determined control intervention S.
  • step S7 being a consequence of step S6, is also optional and therefore in FIG. 3 shown only by dashed lines.
  • control intervention S is determined immediately after determining the exit-side head curvature K and the selected rolling stand 1 is actuated immediately after the determination of the control intervention S in accordance with the determined control intervention S. If the control intervention S is output to the rolling stand 1 immediately downstream of the selected rolling stand 1 in step S7, it is sufficient that the control engagement S is determined at any time when the strip 2 has not yet entered the rolling stand immediately downstream of the selected rolling stand 1 1 is threaded. Because in this case it is sufficient that the rolling stand 1 immediately following the selected roll stand 1 is activated at the latest when threading the strip 2 into the rolling stand 1 immediately downstream of the selected rolling stand 1 in accordance with the determined control command S.
  • step S9 After the execution of step S9, the control device 3 returns to step S2.
  • step S8 If it has been decided in step S8 that the last rolling mill 1 has already been selected, the control device transfers to a step S10. In step S10, the band 2, at least as far as it is between the rolling stands 1, zugbeaufschlagt. Then, rolling is continued in a step S11.
  • the belt 2 - always viewed relative to the rolling center line 7 - runs into each of the rolling stands 1 with a respective belt offset V 'and a respective inlet-side belt pitch SE'. Furthermore, the band 2 runs out of each of the rolling stands 1 with the respective band offset V ', a respective outgoing-side band pitch SA' and a respective outlet-side band curvature K '.
  • the band offsets V ', the band pitches SE', SA 'and the outgoing side band curvatures K' need not be the same values as the values previously determined for the band head 8. Nevertheless, the values are known. Also, they can change over time. Nevertheless, the values can be determined.
  • each of the roll stands 1 first to detect or determine the inlet side values (belt offset V 'and inlet side belt pitch SE'), then on the basis of the respective inlet side belt pitch SE 'and in the respective rolling stand 1 successive respective sampling the respective outlet side band pitch SA 'to determine. Furthermore, it is possible, analogous to the respective outlet-side head curvature K, to determine the respective outlet-side belt curvature K '.
  • step S12 it makes sense to determine the respective outlet-side curvatures K, K 'in the most reliable manner possible.
  • FIG. 5 provided that between each two rolling stands 1 - preferably in the region of a loop lifter 9 - each a position detection device 10 is arranged.
  • a respective intermediate frame head offset VZ of the tape head 8 can be detected, in each case based on the immediately upstream rolling stand 1.
  • L is in this case the distance of the respective position detecting device 10 to the immediately upstream rolling mill 1.
  • step S13 alternatively or additionally to the determination according to step S6, the determination of a respective control intervention occurs with respect to each of the rolling stands 1.
  • step S14 the control of the respective rolling stand 1 and / or of the respective rolling stand 1 takes place immediately downstream roll stand 1.
  • the determination of the respective control intervention S takes place in the context of step S13 using also the respective band offset V ', the respective outgoing side band pitch SA' and the respective intermediate frame band offset VZ '.
  • the respective control intervention S is in the context of step S13 so using both the respective outlet side head curvature K, the respective outlet side head pitch SA and the respective head offset V and using the respective band offset V ', the respective outlet side band pitch SA' and the respective interstand band offset VZ 'determined.
  • Equivalent to the use of the respective intermediate frame belt offset VZ 'in this case is a use of the respective outlet-side belt curvature K', because these two variables are readily interconvertible.
  • step S13 it is possible to determine an original band line on the basis of the respective head sizes V, SA, K, to determine a current band line on the basis of the respective band sizes V ', SA', K 'and the difference between these two lines To interpret tension condition in band 2.
  • this knowledge can be used to determine the respective control intervention S such that the respective control intervention S counteracts a deflection of a belt foot 11 of the belt 2 when the belt foot 11 leaves the respective rolling stand 1.
  • the respective rolling stand 1 and / or the respective rolling stand 1 immediately downstream rolling mill 1 to drive at a time corresponding to the determined respective control intervention S, to which the incoming rolling mill 1 in the respective band 2 (still) zugbeaufschlagt.
  • the respective rolling stand 1 and / or the respective rolling stand 1 immediately downstream rolling mill 1 to drive at a time corresponding to the determined respective control intervention S, to which the incoming rolling mill 1 in the respective band (already) is draft-free.
  • the respective control intervention S must of course have previously been determined by the control device 3.
  • the respective control intervention S is determined immediately before.
  • position detection devices 10 per rolling line section.
  • the arrangement of the position detecting means 10 is optimal in this case, when the position detecting means 10 are evenly spaced from each other.
  • a position detection device 10 may be arranged in the middle between each two immediately adjacent rolling stands 1, another position detection device 10 immediately before the rolling stand 1 immediately downstream of the respective rolling stand 1. In practice, however, it may be necessary for superior reasons to deviate from this arrangement, which is optimal in terms of measuring accuracy.
  • E is the modulus of elasticity of the belt 2, optionally at the instantaneous belt temperature, I is the axial moment of area of the belt cross section in the belt thickness direction.
  • FIG. 9 shows a way to determine the outlet side curvatures K, K ', without a position detection device 10 according to FIG. 5 to need.
  • a mathematical-physical model 13 is implemented.
  • the mathematical-physical model 13 are according to FIG. 10 in a step S21 for each rolling stand 1, the respective head offset V and the respective outlet-side head pitch SA supplied.
  • actual quantities of the strip 2 entering the respective rolling stand 1 and the strip 2 leaving the respective rolling stand 1 are fed to the mathematical-physical model 13 in step S21.
  • step S21 variables and parameters of the respective rolling stand 1 are fed to the mathematical-physical model 13.
  • the respective outflow-side head curvature K, K ' is then determined in a step S22.
  • ⁇ vA is the speed difference with which the strip edges 12 run out of the respective roll stand 1.
  • vE is the speed at which the middle of the Bandes 2 enters the respectively considered rolling stand 1
  • ⁇ vE the speed difference with which the band edges 12 run into the respectively considered rolling stand 1.
  • the inlet-side sizes (ie the sizes with the end letter "E" are hereby invariably known, namely for the first rolled stand 1 a priori, for the other rolling stands 1 by appropriate calculation using the mathematical-physical model 13.
  • the (average) Outlet-side strip thickness hA is known on the basis of the known stitch reduction
  • Equations 11 to 13 FW is the rolling force, s is the nip, cG is the framework rigidity, kF is the yield strength, T is the temperature of the belt 2, ⁇ is the coefficient of friction in the nip, and y is the eccentricity (corresponds to the head offset V) with which Volume 2 passes through each considered rolling stand 1.
  • the band 2 has a sectionally constant head curvature K.
  • the length of the individual sections, within which the belt 2 has a constant head curvature K are generally considerably smaller than the distance G of the rolling stands 1 from one another.
  • the determination of the head offset V "as a function of the position of the belt 2 in the rolling train is therefore not as easy as described above, but it is still possible because the individual sections are continuously adjacent to each other.
  • step S27 the respective outflow-side head curvature K is recalculated in accordance with the last-mentioned variables (head offset V, exit-side head lead SA and interframe head offset VZ).
  • the newly calculated outlet-side head curvature K then replaces the outlet-side head curvature K determined previously on the basis of the mathematical-physical model 13.
  • an at least substantial approximation for example by 70, 75 or 80%, is possible.
  • step S28 the mathematical-physical model 13 is adapted from the corrected respective outlet-side head curvature K on the basis of a deviation of the respective outlet-side head curvature K determined by means of the mathematical-physical model 13.
  • the mathematical-physical model 13 is thus adapted to the actual conditions, so that a better determination of the outlet-side head curvature K by the mathematical-physical model 13 is carried out for bands 2 rolled at a later time.
  • ⁇ is a suitably determined weighting factor lying between zero and one.
  • the weighting factor ⁇ can be constant in time or variable in time. If it is variable in time, it preferably decreases over time.
  • the present invention has many advantages. In particular, it works reliably and is easy to implement and can even be retrofitted to existing rolling mills.

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

Claims (18)

  1. Procédé pour faire fonctionner un train de laminoir, qui a plusieurs cages ( 1 ) de laminoir parcourues les unes après les autres par un feuillard ( 2 ),
    - dans lequel le feuillard ( 2 ) - considéré toujours par rapport à une ligne ( 7 ) médiane de laminage - est enfilé dans chacune des cages ( 1 ) de laminoir avec un décalage ( V ) de tête respectif connu et une pente ( SE ) de tête du côté de l'entrée respective connue, de sorte qu'une tête ( 8 ) du feuillard ( 2 ) sorte de la cage ( 1 ) de laminoir respective en ayant le décalage ( V ) de tête respectif, une pente ( SA ) de tête du côté de la sortie respective et une courbure ( K ) de tête du côté de la sortie respective,
    - dans lequel la pente ( SA ) de tête du côté de la sortie respective est déterminée au moyen de la pente ( SE ) de tête du côté de l'entrée respective et d'une réduction aux passes respectives s'effectuant dans une cage ( 1 ) de laminoir respective,
    - dans lequel au moyen d'un dispositif ( 10 ) de détection de position respectif, disposé entre la cage ( 1 ) de laminoir respective et la cage ( 1 ) de laminoir disposée directement après la cage ( 1 ) de laminoir respective, un décalage ( VZ ) de cage intermédiaire respectif de la tête ( 8 ) du feuillard est détecté,
    - dans lequel, au moyen du décalage ( VZ ) de tête de cage intermédiaire détecté respectivement du décalage ( V ) de tête respectif et de la pente ( SA ) de tête du côté de la sortie respective, la courbure ( K ) de tête du côté de la sortie respective du feuillard ( 2 ) est déterminée,
    - dans lequel, en utilisant la courbure ( K ) de tête du côté de la sortie respective, une intervention ( S ) de commande respective de la cage ( 1 ) de laminoir respective et/ou de la cage ( 1 ) de laminoir disposée immédiatement après la cage ( 1 ) de laminoir respective, est déterminée,
    - dans lequel la cage ( 1 ) de laminoir respective et/ou la cage ( 1 ) de laminoir disposée immédiatement après la cage ( 1 ) de laminoir respective, sont commandées conformément à l'intervention ( S ) de commande respective déterminée.
  2. Procédé suivant la revendication 1,
    caractérisé
    - en ce que le décalage ( V ) de tête respectif, la pente
    ( SA ) de tête du côté de la sortie respective et la courbure ( K ) de tête du côté de la sortie respective sont mémorisés,
    - en ce que, après avoir enfilé le feuillard ( 1 ) dans la dernière cage ( 1 ) de laminoir du train de laminoir, le feuillard ( 1 ) se trouvant entre les cages ( 1 ) de laminoir est sollicité en traction,
    - en ce que le feuillard ( 2 ) - considéré toujours par rapport à la ligne ( 7 ) médiane de laminage - pénètre dans chacune des cages ( 1 ) de laminoir en ayant un décalage ( V' ) de feuillard respectif connu et une pente ( SE' ) de feuillard du côté de l'entrée respective connue et sort de la cage ( 1 ) de laminoir respective en ayant le décalage ( V' ) de laminoir respectif, une pente ( SA' ) de feuillard du côté de la sortie respective et une courbure ( K' ) de feuillard du côté de la sortie respective,
    - en ce que la pente ( SA' ) de feuillard du côté de la sortie respective est déterminée au moyen de la pente ( SE' ) de feuillard du côté de l'entrée respective et de la réduction aux passes respectives s'effectuant dans la cage ( 1 ) de laminoir respective,
    - en ce que, au moyen du dispositif ( 10 ) de détection de position monté directement après la cage ( 1 ) de laminoir respective, un décalage ( VZ' ) de cage intermédiaire du feuillard ( 2 ) est détecté,
    - en ce que, au moyen du décalage ( V' ) de feuillard respectif de la pente ( SA' ) de feuillard du côté de la sortie respective et du décalage ( VZ' ) de feuillard de cage intermédiaire, la courbure ( K' ) de feuillard du côté de la sortie respective est déterminée et
    - en ce que l'intervention ( S ) de commande respective est déterminée en utilisant aussi le décalage ( V' ) de feuillard respectif, la pente ( SA' ) de feuillard du côté de la sortie respective et le décalage ( VZ' ) de feuillard de cage intermédiaire respectif.
  3. Procédé suivant la revendication 2,
    caractérisé
    en ce que l'on détermine l'intervention ( S ) de commande respective, de manière à ce que l'intervention ( S ) de commande respective s'oppose à une déviation d'un pied ( 11 ) du feuillard ( 2 ), lorsque le pied ( 11 ) du feuillard sort de la cage ( 1 ) de laminoir respective.
  4. Procédé suivant la revendication 2 ou 3,
    caractérisé
    en ce que la cage ( 1 ) de laminoir respective et/ou la cage ( 1 ) de laminoir disposée directement après la cage ( 1 ) de laminoir respective, sont commandées à un instant correspondant à l'intervention ( S ) de commande respective déterminée où le feuillard ( 2 ) entrant dans la cage ( 1 ) de laminoir respective est sollicité en traction.
  5. Procédé suivant la revendication 2 ou 3,
    caractérisé
    en ce que la cage ( 1 ) de laminoir respective et/ou la cage ( 1 ) de laminoir disposée directement après la cage ( 1 ) de laminoir respective, sont commandées à un instant correspondant à l'intervention ( S ) de commande respective déterminée où le feuillard ( 2 ) entrant dans la cage ( 1 ) de laminoir respective n'a pas de traction.
  6. Procédé suivant l'une des revendications précédentes, caractérisé
    en ce qu'en utilisant le décalage ( V ) de tête respectif, la pente ( SA ) de tête du côté de la sortie respective et la courbure ( K ) du côté de la sortie respective de la cage ( 1 ) de laminoir respective, le décalage ( V ) de tête respective et la pente ( SE ) de tête du côté de l'entrée respective sont déterminés pour la cage ( 1 ) de laminoir disposée immédiatement après la cage ( 1 ) de laminoir respective.
  7. Procédé pour faire fonctionner un train de laminoir, qui a plusieurs cages ( 1 ) de laminoir parcourues les unes après les autres par un feuillard ( 2 ),
    - dans lequel le feuillard ( 2 ) - considéré toujours par rapport à une ligne ( 7 ) médiane de laminage - est enfilé dans chacune des cages ( 1 ) de laminoir avec un décalage ( V ) de tête respectif connu et une pente ( SE ) de tête du côté de l'entrée respective connue, de sorte qu'une tête ( 8 ) du feuillard ( 2 ) sorte de la cage ( 1 ) de laminoir respective en ayant le décalage ( V ) de tête respectif, une pente ( SA ) de tête du côté de la sortie respective et une courbure ( K ) de tête du côté de la sortie respective,
    - dans lequel la pente ( SA ) de tête du côté de la sortie respective est déterminée au moyen de la pente ( SE ) de tête du côté de l'entrée respective et d'une réduction aux passes respectives s'effectuant dans une cage ( 1 ) de laminoir respective,
    - dans lequel on envoie à un modèle ( 13 ) physico-mathématique, le décalage ( V ) de tête respectif et la pente ( SA ) de tête du côté de la sortie respective, des grandeurs réelles du feuillard ( 2 ) entrant dans la cage ( 1 ) de laminoir respective et du feuillard ( 2 ) sortant de la cage ( 1 ) de laminoir respective, ainsi que des variables et des paramètres de la cage ( 1 ) de laminoir respective et l'on détermine la courbure ( K ) de tête du côté de la sortie respective au moyen du modèle ( 13 ) physico-mathématique,
    - dans lequel, en utilisant la courbure ( K ) de tête du côté de la sortie respective, une intervention ( S ) de commande respective de la cage ( 1 ) de laminoir respective et/ou de la cage ( 1 ) de laminoir disposée immédiatement après la cage ( 1 ) de laminoir respective est déterminée,
    - dans lequel la cage ( 1 ) de laminoir respective et/ou la cage ( 1 ) de laminoir disposée immédiatement après la cage ( 1 ) de laminoir respective sont commandées conformément à l'intervention ( S ) de commande respective déterminée.
  8. Procédé suivant la revendication 7,
    caractérisé
    - en ce que, après la détermination de la courbure ( K ) de tête du côté de la sortie respective au moyen du modèle ( 13 ) physico-mathématique, on détecte supplémentairement au moyen d'un dispositif ( 10 ) de détection de position respectif, disposé entre la cage ( 1 ) de laminoir respective et la cage ( 1 ) de laminoir disposée directement après la cage ( 1 ) de laminoir respective, un décalage ( VZ ) de tête de cage intermédiaire du feuillard ( 2 ) et
    - en ce que la courbure ( K ) de tête du côté de la sortie respective est corrigée au moyen du décalage ( VZ ) de tête de cage intermédiaire détecté respectif, du décalage ( V ) de tête respectif et de la pente ( SA ) de tête du côté de la sortie respective.
  9. Procédé suivant la revendication 8,
    caractérisé
    en ce que l'on adapte le modèle ( 13 ) physico-mathématique au moyen d'un écart à la courbure ( K ) de tête du côté de la sortie respective corrigée de la courbure ( K ) de tête du côté de la sortie respective déterminée au moyen du modèle ( 13 ) physico-mathématique.
  10. Procédé suivant la revendication 7, 8 ou 9,
    caractérisé
    en ce que l'on détermine l'intervention ( S ) de commande respective, directement après la détermination de la courbure ( K ) de tête du côté de la sortie respective, et en ce que l'on commande la cage ( 1 ) de laminoir respective, directement après la détermination de l'intervention ( S ) de commande respective conformément à l'intervention ( S ) de commande respective déterminée.
  11. Procédé suivant la revendication 1, 2 ou 3 ou revendication 7, 8 ou 9,
    caractérisé
    en ce que l'on commande, conformément à l'intervention ( S ) de commande respective déterminée, la cage ( 1 ) de laminoir respective disposée directement après la cage ( 1 ) de laminoir respective au plus tard, lorsque le feuillard ( 2 ) est enfilé dans la cage ( 1 ) de laminoir disposée directement après la cage ( 1 ) de laminoir respective.
  12. Procédé suivant l'une des revendications 1 à 11, caractérisé
    en ce que la courbure ( K ) de tête du côté de la sortie respective est constante.
  13. Procédé suivant l'une des revendications 1 à 11, caractérisé
    en ce que la courbure ( K ) de tête du côté de la sortie respective varie avec une distance ( x ) de la cage ( 1 ) de laminoir respective.
  14. Programme informatique, qui a un code ( 5 ) machine, qui peut être exécuté directement par un dispositif ( 3 ) de commande d'un train de laminoir à plusieurs cage et dont l'exécution est provoquée par le dispositif ( 3 ) de commande, en ce que le dispositif ( 3 ) de commande fait fonctionner le train de laminoir suivant un procédé de fonctionnement suivant l'une des revendications précédentes.
  15. Support de données ayant un programme ( 4 ) informatique suivant la revendication 14 mémorisé sur le support de données.
  16. Dispositif de commande d'un train de laminoir à plusieurs cages, le dispositif de commande étant tel qu'il fait fonctionner le train de laminoir suivant un procédé de fonctionnement suivant l'une des revendications 1 à 13.
  17. Dispositif de commande suivant la revendication 16, caractérisé
    en ce qu'il est constitué en dispositif de commande pouvant être programmé par logiciel, qui exécute en fonctionnement un programme ( 4 ) informatique suivant la revendication 14.
  18. Train de laminoir,
    - dans lequel le train de laminoir a plusieurs cages ( 1 ) de laminoir parcourues les unes après les autres par un feuillard ( 2 ),
    - dans lequel le train de laminoir a un dispositif ( 3 ) de commande suivant la revendication 16 ou 17, de sorte que le train de laminoir fonctionne en fonctionnement suivant un procédé de fonctionnement suivant l'une des revendications 1 à 13.
EP08803135A 2007-09-13 2008-08-21 Procédé de fonctionnement pour une batterie de laminoirs avec détection de courbure Active EP2188074B1 (fr)

Priority Applications (1)

Application Number Priority Date Filing Date Title
PL08803135T PL2188074T3 (pl) 2007-09-13 2008-08-21 Sposób eksploatacji walcowni z wykrywaniem krzywizny

Applications Claiming Priority (3)

Application Number Priority Date Filing Date Title
DE102007043793 2007-09-13
DE102008007247A DE102008007247A1 (de) 2007-09-13 2008-02-01 Betriebsverfahren für eine Walzstraße mit Krümmungserkennung
PCT/EP2008/060967 WO2009037064A1 (fr) 2007-09-13 2008-08-21 Procédé de fonctionnement pour une batterie de laminoirs avec détection de courbure

Publications (2)

Publication Number Publication Date
EP2188074A1 EP2188074A1 (fr) 2010-05-26
EP2188074B1 true EP2188074B1 (fr) 2012-11-21

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US (1) US8752409B2 (fr)
EP (1) EP2188074B1 (fr)
CN (1) CN101801553B (fr)
BR (1) BRPI0816981B1 (fr)
DE (1) DE102008007247A1 (fr)
PL (1) PL2188074T3 (fr)
RU (1) RU2481166C2 (fr)
WO (1) WO2009037064A1 (fr)

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EP2527052A1 (fr) 2011-05-24 2012-11-28 Siemens Aktiengesellschaft Procédé de fonctionnement pour une voie de laminage
US12083569B2 (en) 2019-06-20 2024-09-10 Jfe Steel Corporation Meandering control method for hot-rolled steel strip, meandering control device, and hot rolling equipment
US11833560B2 (en) 2019-07-22 2023-12-05 Jfe Steel Corporation Meandering control method, meandering control device, and hot rolling equipment for hot rolled steel strip

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Publication number Publication date
DE102008007247A1 (de) 2009-03-19
RU2010114570A (ru) 2011-10-20
CN101801553B (zh) 2012-09-05
US20100242566A1 (en) 2010-09-30
BRPI0816981B1 (pt) 2019-10-22
WO2009037064A1 (fr) 2009-03-26
PL2188074T3 (pl) 2013-04-30
CN101801553A (zh) 2010-08-11
EP2188074A1 (fr) 2010-05-26
BRPI0816981A2 (pt) 2015-03-24
RU2481166C2 (ru) 2013-05-10
US8752409B2 (en) 2014-06-17

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