EP1525061B1 - Correction dynamique d'epaisseur - Google Patents

Correction dynamique d'epaisseur Download PDF

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Publication number
EP1525061B1
EP1525061B1 EP03764965A EP03764965A EP1525061B1 EP 1525061 B1 EP1525061 B1 EP 1525061B1 EP 03764965 A EP03764965 A EP 03764965A EP 03764965 A EP03764965 A EP 03764965A EP 1525061 B1 EP1525061 B1 EP 1525061B1
Authority
EP
European Patent Office
Prior art keywords
strip
thickness
take
coiler
average
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
EP03764965A
Other languages
German (de)
English (en)
Other versions
EP1525061A1 (fr
EP1525061B2 (fr
EP1525061B8 (fr
Inventor
Michael Pampel
Günter PAMPEL
Manfred Dr. Jeude
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.)
Aluminium Norf GmbH
Original Assignee
Aluminum Norf GmbH
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
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Application filed by Aluminum Norf GmbH filed Critical Aluminum Norf GmbH
Publication of EP1525061A1 publication Critical patent/EP1525061A1/fr
Publication of EP1525061B1 publication Critical patent/EP1525061B1/fr
Application granted granted Critical
Publication of EP1525061B8 publication Critical patent/EP1525061B8/fr
Publication of EP1525061B2 publication Critical patent/EP1525061B2/fr
Anticipated expiration legal-status Critical
Expired - Lifetime legal-status Critical Current

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Classifications

    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B21—MECHANICAL METAL-WORKING WITHOUT ESSENTIALLY REMOVING MATERIAL; PUNCHING METAL
    • B21B—ROLLING OF METAL
    • 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
    • B21B37/18—Automatic gauge 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
    • B21B15/00—Arrangements for performing additional metal-working operations specially combined with or arranged in, or specially adapted for use in connection with, metal-rolling mills
    • B21B2015/0057—Coiling the rolled product
    • 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
    • B21B2261/04—Thickness, gauge
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B21—MECHANICAL METAL-WORKING WITHOUT ESSENTIALLY REMOVING MATERIAL; PUNCHING METAL
    • B21B—ROLLING OF METAL
    • B21B38/00—Methods or devices for measuring, detecting or monitoring specially adapted for metal-rolling mills, e.g. position detection, inspection of the product
    • B21B38/04—Methods or devices for measuring, detecting or monitoring specially adapted for metal-rolling mills, e.g. position detection, inspection of the product for measuring thickness, width, diameter or other transverse dimensions of the product

Definitions

  • the invention relates to a method and a device for correcting the thickness of a metallic strip during rolling with a roll stand with adjusting elements for regulating the thickness of the metallic strip and at least one take-up reel, according to the preamble of the respective independent claim (see US-A-3540247).
  • the rolled metallic strips When rolling metallic strips, such as strips of aluminum or an aluminum alloy, to reduce their thickness, the rolled metallic strips are wound after passing through a roll stand on a take-up reel as a bunch.
  • An important quality feature of the rolled strip wound up as a bundle is, inter alia, the thickness of the strip and its fluctuations.
  • the thickness of the metallic strip is determined by means of a radiometric measuring method and controlled the control elements of the rolling mill depending on this value.
  • the radiometric measuring method the radiation, transmitted through the metallic strip, of a radiator arranged on the other side of the metallic strip is measured with the aid of a detector arranged on one side of the metallic strip.
  • the radiation measured by the detector is dependent on the absorption in the metallic band, which is determined in particular by the thickness of the metallic strip.
  • the deviation of the radiometrically determined strip thickness from a target value of the thickness of the strip is used as an input to control actuators of the rolling stand for influencing the thickness of the metallic strip.
  • the thickness measurement obtained by radiometry is dependent on further influencing variables, for example the alloy composition of the strip, the air density and air temperature in the measuring path, for example when blowing off or sucking off heated air, the proportion of coolant and lubricant mist in the measuring path and the temperature of the rolling stock and the System components for determining the thickness. Therefore, a determination of the influencing variables and standardization of the radiometric measuring method on the additional parameters is absolutely necessary.
  • a disadvantage of the hitherto known method for correcting the strip thickness of a metallic strip during rolling is that determination of the influencing variables and normalization of the radiometric measuring method to these influencing variables can not take place comprehensively under rolling conditions.
  • determination of the influencing variables and normalization of the radiometric measuring method to these influencing variables can not take place comprehensively under rolling conditions.
  • Variations in sampling as well as measurement uncertainties in spark spectrometry mean that the radiometrically determined thickness is provided with a confidence interval, which must be taken into account depending on the product requirement.
  • the electrical zero point of the detector signal is used with the radiator shutter closed, on the other hand at full irradiation, ie without a sample in the measuring path, a calibration factor is determined which takes into account the absorption conditions in the test section at this time. This happens automatically during the bundle change or at each opening of the spotlight cover without material to be measured.
  • the temperature change in the measuring path with rolling stock is concluded.
  • a detection of the integral temperature profile in the measuring path, which has great variations when rolling through the hot rolled strip, is not possible. The integral temperature profile can therefore not be taken into account in the radiometric thickness determination.
  • control standards i. metallic sheets whose absorption properties do not change except by temperature changes.
  • a correction of the absorption curve stored in the measuring system can be carried out.
  • this adjustment can also be carried out only with interrupted rolling.
  • an average strip thickness of a strip section is determined from at least one strip length measurement and the measurement of the associated rotation of the take-up reel and the setting elements of the rolling stand are controlled at least as a function of the determined mean strip thickness of the strip section
  • Bandes is connected to the take-up reel with the measured tape length and Aufwickelhaspelumwindung, from which can be determined by a fill factor, the average tape thickness.
  • the required measured values of the strip length and of the take-up reel turn are almost independent of the influencing variables of the radiometric thickness measurement, so that a measurement value independent of the environmental conditions of the rolling stand is available for the mean strip thickness of a strip section.
  • the present invention based on the object to provide a method and apparatus for correcting the thickness of a metallic strip in rolling with a roll stand, which or the production of rolled strips with a ensured reduced thickness tolerance. The problem is solved by the method by the characterizing feature combination according to claim 1.
  • the strip thickness is additionally measured radiometrically and the setting elements of the rolling stand are controlled as a function of a radiometric strip thickness corrected with the mean strip thickness
  • an input variable for controlling the strip thickness when rolling a metallic strip which on the one hand enables an almost instantaneous influencing of the adjusting elements and on the other hand can be corrected independently of the typical influencing variables of the radiometric determination of the strip thickness during the rolling process.
  • a particularly high accuracy in the measurement of the strip length during rolling is, according to an advantageously further developed embodiment of the method according to the invention, achieved by measuring the strip length using the laser Doppler velocimetry method.
  • the Laser Doppler Velocimetry (LDV) method is a standard method of measuring flow velocities. The principle is to detect and evaluate the scattered light of a particle which is generated by a laser source Crossed interference fringe system. The frequency of the received signal is then proportional to the particle velocity. If the interference fringe system is imaged onto the rolled strip, then the speed of the rolled strip can be determined very precisely by scattered light evaluation. Thus, a high-precision strip length measurement is available for determining the mean strip thickness of a strip section.
  • the number of revolutions of the take-up reel is measured using high-resolution incremental encoders on the take-up reel or take-up reel motor axis, the number of revolutions of the take-up reel necessary for determining the mean strip thickness can be determined with sufficient accuracy in a simple manner.
  • An advantageous embodiment of the inventive method undergoes the fact that a plurality of values for the mean strip thickness of the same strip section is determined by selecting a plurality of different starting points and to be measured tape lengths for the determination of the mean strip thickness.
  • the influence of the coiling process on the filling factor can, according to a further developed embodiment of the method, be taken into account by additionally smoothing the values for the mean strip thickness of the same strip section as a function of the current coil diameter of the strip on the variable-weight take-up reel. In this way it can be prevented that, especially at the beginning of the coiling process, fluctuations in the diameter of the collar have a greater effect on the determination of the mean strip thickness.
  • the process reliability in the determination of the mean strip thickness can be further increased by performing at least one further, redundant strip length measurement according to an advantageous embodiment of the method according to the invention.
  • US-A-3540247 also discloses a device for correcting the thickness of a metallic strip during rolling with at least one rolling stand with adjusting elements for controlling the thickness of the strip, at least one take-up reel and means for Measurement of the strip length and the extent of the associated rotation of the take-up reel solved by means are provided for controlling the control elements of the rolling stand in response to a determined from the measured tape length and the associated rotation of the take-up reel average strip thickness.
  • An input to control the actuators is, according to the device according to the invention, immediately after the rolling of the belt available, because in addition means for radiometric thickness determination of the metallic strip between the rolling stand and take-up reel are provided.
  • An advantageous embodiment undergoes the device according to the invention in that means for redundant tape length measurement are provided.
  • the process reliability during rolling in relation to the failure of a strip length measuring system can be increased thereby, on the other hand, a check of the respective strip length measurement is possible by the redundant strip length measurement, so that their accuracy can be increased.
  • the accuracy of the tape length measurement can be further increased in that, according to a further developed embodiment of the device according to the invention, for the tape length measurement, a laser Doppler velocimetry system is provided.
  • a device for correcting the thickness of a metallic strip 1 during rolling has a rolling mill 2 with not shown adjusting elements for controlling the thickness of the belt 1, a deflection roller 3 and a take-up reel 4.
  • an LDV system 5 for measuring the strip length, an incremental encoder 6 on the take-up reel axis 7 and a radiator 8 and a detector 9 for radiometric determination of the strip thickness are shown for determining the strip thickness.
  • FIG. 2a shows the basic sequence of the method for determining the mean strip thickness of a metallic strip 1 with the aid of an LDV system 5 and a take-up reel 4.
  • the LDV system 5 measures the strip length during winding of the strip 1 on the Winding reel 4, wherein the first layer of the tape 1 during winding assumes a fixed by the take-up reel 4 radius r.
  • L n is the length running from an arbitrary starting point
  • n is the associated number of revolutions of the take-up reel 4
  • L m is a fixed length from the same starting point
  • m is the associated number of revolutions of the take-up reel 4 to the fixed length L m .
  • FIG. 1 again shows, in order to measure the tape lengths L n or L m , in principle, the guide roller 3 are used, however, a non-contact and slip-free measurement with the LDV system 5 is preferable because thus allows a much more accurate tape length measurement becomes.
  • High-resolution incremental encoders 6, which are arranged on the winding hull 7, provide the associated number n or m of revolutions of the take-up reel. With these measured values is first one mean layer distance h is calculated according to the above formula, so that h can be used to calculate the mean strip thickness of a strip section with the aid of a fill factor.
  • the calculation of the mean strip thickness takes place after an adjustable strip length with the aid of the computer 10, which on the one hand displays the measured mean strip thickness via the display 11 and on the other hand forwards the value for the dynamic thickness correction to a first comparison device 12.
  • the value of the mean strip thickness is compared with the desired thickness 13 of the strip 1 and the difference is forwarded as a dynamic thickness deviation to a next comparison device 14.
  • the radiometric strip thickness 15 determined with the aid of the radiator 8 and the detector 9 is used to add the value of the dynamic thickness deviation to the comparison device 14 and fed to a further comparison device 17 as a dynamically corrected actual thickness 16. This now determines the control variable for the control of the adjusting elements 18 from the deviation of the dynamically corrected actual thickness 16 of the target thickness 13.
  • the value of the dynamic thickness correction during the rolling process even after short tape lengths, for example, after a wound tape length of about 50m, sufficient be accurately determined. Although this does not apply to the beginning of the rolling process, since in that case the fluctuations due to the winding process are still too great, a correction possibility of the radiometrically determined strip thickness 15 is available in the further course of the rolling process, which is independent of the influencing variables of the radiometric strip thickness measurements , By excluding these factors, the Control of the adjusting elements of the rolling mill 18 are performed much more accurate, resulting in a significant reduction of the strip thickness tolerances.
  • FIG. 3 The block diagram of the control of a corresponding embodiment of a device for correcting the thickness of a metallic strip during rolling is shown in FIG. 3.
  • the parameters, quantities and conditions mentioned below are to be regarded only as an example configuration of the control, which may vary depending on the rolling stock to be produced ,
  • the block diagram shown in FIG. 3 initially has a logic AND gate 19 with 6 inputs 20, 21, 22, 23, 24, 25 and an output 26.
  • the inputs 20 to 24 for example, the conditions as to whether the laser is functional, whether the target thickness is more than 0.8 mm, for example, whether data on the alloy of the alloy are stored in a table, whether manual or automatic mode is selected, and whether the belt speed is greater than, for example, 100 m / min, queried and used to unlock the thickness correction.
  • Other conditions can be considered via additional inputs on the AND gate 19.
  • the input 25 of the AND gate 19 is connected to the output of a logical OR gate 27, which in turn has two inputs 28 and 29 which are connected to the output of the comparison elements 30 and 31, respectively are.
  • the comparison element 30 the actual value of the strip length 32 is compared with a calculated from the target thickness 33 via a function member 34 start value of the tape length 35 and an output signal to the OR gate 27 switched as soon as the actual value of the tape length 32 above a certain starting value of the tape length 35th lies.
  • the comparison element 31 compares, with the aid of the absolute element 38, the absolute value of the difference 39 determined between the target thickness 33 and the average strip thickness 37 determined by the differential element 36 with a value dependent on the target thickness 33. If the absolute deviation is less than, for example, 1% of the nominal thickness, the output of the comparison element 31 is switched on and a signal is applied to the input 29 of the OR element 27.
  • a signal is applied to the input 25 of the AND element 19. If the inputs 20 to 25 of the AND element 19 are connected, the output 41 of the logic circuit is set to "auto-correction switched on" via the output 26 of the AND element 19 with the aid of the set element 40. At the same time a signal is applied to the input 42 of the PID gate 43. The PID element 43 then determines the dynamic thickness correction 44 of the radiometrically measured actual thickness 46 of the strip from the control deviation applied in the form of the difference 39 between the desired thickness 33 and the average strip thickness 37 determined by the LDV method. However, by means of a comparator 46 connected to the PID element 43, the regulation of the PID element 43 can be prevented, provided that the control deviation 39, for example, less than 1% of the target thickness 33 is.
  • the dynamic thickness correction 44 is then added to the measured actual thickness 45 and applied to the input 49 of a switch 50 as a corrected actual thickness 48.
  • the output 51 of the switch 50 is in turn connected directly to an input, not shown, the control of the control elements of the rolling stand.
  • the switch 50 connects the input 49 to the output 51 and the position elements of the rolling stands are controlled with the corrected actual thickness 48.
  • the value output via the output 51 is again compared with the setpoint thickness 33 and the control elements of the roll stand 2 are correspondingly controlled.

Landscapes

  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Control Of Metal Rolling (AREA)
  • Length Measuring Devices By Optical Means (AREA)
  • Details Of Television Scanning (AREA)
  • Surface Acoustic Wave Elements And Circuit Networks Thereof (AREA)
  • Particle Accelerators (AREA)
  • Length-Measuring Devices Using Wave Or Particle Radiation (AREA)
  • Metal Rolling (AREA)
  • Winding, Rewinding, Material Storage Devices (AREA)
  • Measuring And Recording Apparatus For Diagnosis (AREA)

Claims (11)

  1. Procédé de correction de l'épaisseur d'une bande métallique lors du laminage avec une cage de laminoir comportant des éléments de réglage pour la régulation de l'épaisseur de la bande et un bobinoir, une épaisseur moyenne d'un tronçon de la bande étant déterminée à partir d'au moins une mesure de la longueur de la bande et de la mesure de la rotation correspondante du bobinoir, et les éléments de réglage de la cage de laminoir étant commandés au moins en fonction de l'épaisseur de bande moyenne du tronçon de bande, caractérisé en ce que l'épaisseur de la bande est mesurée en outre de façon radiométrique et les éléments de réglage de la cage de laminoir sont commandés en fonction d'une épaisseur de bande radiométrique corrigée avec l'épaisseur de bande moyenne.
  2. Procédé selon la revendication 1, caractérisé en ce que la longueur de la bande est mesurée par utilisation du procédé de vélocimétrie doppler à laser.
  3. Procédé selon l'une des revendications 1 ou 2, caractérisé en ce que la vitesse de rotation du bobinoir est mesurée par utilisation d'un capteur incrémentiel à haute résolution sur l'axe du bobinoir ou sur l'axe du moteur du bobinoir.
  4. Procédé selon l'une des revendications 1 à 3, caractérisé en ce que par le choix d'une pluralité de points de départ différents et de longueurs de bande à mesurer pour la détermination de l'épaisseur de bande moyenne, une pluralité de valeurs pour l'épaisseur de bande moyenne du même tronçon de bande est déterminée.
  5. Procédé selon la revendication 4, caractérisé en ce que les valeurs de l'épaisseur de bande moyenne du même tronçon de bande sont de plus lissées en fonction du diamètre actuel de la bande sur le bobinoir, avec une pondération variable.
  6. Procédé selon l'une des revendications 1 à 5, caractérisé en ce qu'il est procédé à au moins une mesure complémentaire et redondante de la longueur de la bande.
  7. Procédé selon la revendication 6, caractérisé en ce qu'en cas de défaillance d'une première mesure de longueur de bande utilisée pour déterminer l'épaisseur de bande moyenne, on commute automatiquement sur une mesure complémentaire et redondante de la longueur de la bande.
  8. Dispositif de correction de l'épaisseur d'une bande métallique (1) lors du laminage comportant au moins une cage de laminoir (2) avec des éléments de réglage pour la régulation de l'épaisseur de la bande, au moins un bobinoir (4), des moyens pour mesurer la longueur de la bande (5) et la rotation correspondante du bobinoir (6) ainsi que des moyens (18) prévus pour la commande des éléments de réglage de la cage de laminoir (2) en fonction d'une épaisseur de bande moyenne déterminée à partir de la longueur mesurée de la bande et de la rotation correspondante du bobinoir (4), en particulier pour la mise en oeuvre d'un procédé selon les revendications 1 à 7, caractérisé en ce que des moyens (8, 9) supplémentaires sont prévus pour la détermination radiométrique de l'épaisseur de la bande métallique (1) entre la cage de laminoir (2) et le bobinoir (3).
  9. Dispositif selon la revendication 8, caractérisé en ce que des moyens (5) sont prévus pour la mesure redondante de la longueur de la bande.
  10. Dispositif selon l'une des revendications 8 ou 9, caractérisé en ce que pour la mesure de la longueur de la bande il est prévu un système de vélocimétrie doppler à laser (5).
  11. Dispositif selon l'une des revendications 8 à 10, caractérisé en ce que des capteurs incrémentiels (6) à haute résolution sont prévus sur l'axe (7) du bobinoir ou sur l'axe du moteur du bobinoir.
EP03764965.4A 2002-07-20 2003-07-10 Correction dynamique d'epaisseur Expired - Lifetime EP1525061B2 (fr)

Applications Claiming Priority (3)

Application Number Priority Date Filing Date Title
DE10233118 2002-07-20
DE10233118A DE10233118B3 (de) 2002-07-20 2002-07-20 Dynamische Dickenkorrektur
PCT/EP2003/007468 WO2004009261A1 (fr) 2002-07-20 2003-07-10 Correction dynamique d'epaisseur

Publications (4)

Publication Number Publication Date
EP1525061A1 EP1525061A1 (fr) 2005-04-27
EP1525061B1 true EP1525061B1 (fr) 2006-06-21
EP1525061B8 EP1525061B8 (fr) 2006-10-11
EP1525061B2 EP1525061B2 (fr) 2014-07-09

Family

ID=30469021

Family Applications (1)

Application Number Title Priority Date Filing Date
EP03764965.4A Expired - Lifetime EP1525061B2 (fr) 2002-07-20 2003-07-10 Correction dynamique d'epaisseur

Country Status (13)

Country Link
US (1) US7185520B2 (fr)
EP (1) EP1525061B2 (fr)
JP (1) JP2005537932A (fr)
KR (1) KR100699554B1 (fr)
AT (1) ATE330723T1 (fr)
AU (1) AU2003257445A1 (fr)
BR (1) BR0312813B1 (fr)
CA (1) CA2497681C (fr)
DE (2) DE10233118B3 (fr)
EA (1) EA006530B1 (fr)
ES (1) ES2268431T5 (fr)
WO (1) WO2004009261A1 (fr)
ZA (1) ZA200500534B (fr)

Families Citing this family (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE102006057476A1 (de) * 2006-06-17 2007-12-20 Sms Demag Ag Verfahren und Vorrichtung zum Analysieren einer Schicht eines Hilfsstoffes auf einem Umformgut
DE102010014384A1 (de) * 2010-04-06 2011-10-06 Wafios Ag Richt- und Abschneidemaschine
CN102380515B (zh) * 2011-09-16 2014-02-12 中冶南方工程技术有限公司 同步传输模型及其方法
EP3071889B1 (fr) * 2013-11-18 2018-10-17 Unito Smart Technologies Limited Dispositif formant hotte de cuisine
EP3566790B1 (fr) * 2018-05-08 2021-01-06 Muhr und Bender KG Procédé de réglage dynamique d'écartement entre cylindres lors du laminage flexible de bandes métalliques
CN114535312B (zh) * 2020-11-24 2024-08-09 宝山钢铁股份有限公司 单机架轧机带钢卷径和卷长的自修正方法

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BE566575A (fr) * 1957-04-08
US3015974A (en) * 1958-09-18 1962-01-09 Gen Electric Automatic control system for rolling mills and adjustable dies
GB945058A (en) * 1959-03-24 1963-12-18 Davy And United Instr Ltd Improvements in or relating to the control of the thickness of material
FR1513585A (fr) * 1967-01-06 1968-02-16 Spidem Ste Nle Procédé et dispositif de contrôle ou de mesure de l'épaisseur d'une bande venants'enrouler en mouvement continu sur un tambour
US3427836A (en) * 1967-03-16 1969-02-18 Gen Dynamics Corp Thickness reduction control system
US3636743A (en) * 1970-06-15 1972-01-25 Allegheny Ludlum Ind Inc Rolling mill control system
US4052599A (en) † 1974-04-25 1977-10-04 Bethlehem Steel Corporation Method and apparatus for determining coil sheet length
US4159572A (en) † 1977-11-02 1979-07-03 United States Steel Corporation Dynamic gage averaging and length determining device and method for continuous sheet material
JPS57181711A (en) * 1981-05-01 1982-11-09 Kawasaki Steel Corp Automatically controlling method of draft of rolling mill
US4548063A (en) * 1984-06-25 1985-10-22 General Electric Company Tension control in a metal rolling mill
JPH0671614B2 (ja) * 1985-11-21 1994-09-14 株式会社日立製作所 自動板厚制御装置
JPH01113102A (ja) * 1987-10-27 1989-05-01 Sumitomo Metal Ind Ltd 厚鋼板の幅出し圧延方法
US4905491A (en) * 1988-04-11 1990-03-06 Aluminum Company Of America Unwind/rewind eccentricity control for rolling mills
EP0609172B1 (fr) † 1993-01-27 1997-10-22 Benninger AG Procédé pour la mesure de largeurs de matériau enroulé sur une bobine

Also Published As

Publication number Publication date
CA2497681A1 (fr) 2004-01-29
DE10233118B3 (de) 2004-04-29
JP2005537932A (ja) 2005-12-15
BR0312813B1 (pt) 2011-08-23
ES2268431T3 (es) 2007-03-16
DE50303974D1 (de) 2006-08-03
WO2004009261A1 (fr) 2004-01-29
KR20050038006A (ko) 2005-04-25
US20060123861A1 (en) 2006-06-15
EA200500221A1 (ru) 2005-08-25
EP1525061A1 (fr) 2005-04-27
US7185520B2 (en) 2007-03-06
ATE330723T1 (de) 2006-07-15
CA2497681C (fr) 2009-05-12
ZA200500534B (en) 2006-05-31
EP1525061B2 (fr) 2014-07-09
AU2003257445A1 (en) 2004-02-09
ES2268431T5 (es) 2014-12-01
EA006530B1 (ru) 2006-02-24
EP1525061B8 (fr) 2006-10-11
AU2003257445A8 (en) 2004-02-09
BR0312813A (pt) 2005-04-19
KR100699554B1 (ko) 2007-03-26

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