EP4013556B1 - Procédé de détermination en ligne d'au moins un paramètre de laminage et laminoir doté d'un dispositif de détermination en ligne d'au moins un paramètre de laminage - Google Patents

Procédé de détermination en ligne d'au moins un paramètre de laminage et laminoir doté d'un dispositif de détermination en ligne d'au moins un paramètre de laminage Download PDF

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Publication number
EP4013556B1
EP4013556B1 EP20745088.3A EP20745088A EP4013556B1 EP 4013556 B1 EP4013556 B1 EP 4013556B1 EP 20745088 A EP20745088 A EP 20745088A EP 4013556 B1 EP4013556 B1 EP 4013556B1
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EP
European Patent Office
Prior art keywords
rolling
frequency
rolling stock
stock
parameter
Prior art date
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Active
Application number
EP20745088.3A
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German (de)
English (en)
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EP4013556A1 (fr
Inventor
Thomas Daube
Thomas Nerzak
Jörg Himmel
Annette Jobst
Mario RADSCHUN
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SMS Group GmbH
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SMS Group GmbH
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    • 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
    • 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
    • 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
    • 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
    • B21B38/08—Methods or devices for measuring, detecting or monitoring specially adapted for metal-rolling mills, e.g. position detection, inspection of the product for measuring roll-force
    • 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
    • B21B2261/10—Cross-sectional area
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B21—MECHANICAL METAL-WORKING WITHOUT ESSENTIALLY REMOVING MATERIAL; PUNCHING METAL
    • B21B—ROLLING OF METAL
    • B21B2275/00—Mill drive parameters
    • B21B2275/02—Speed
    • B21B2275/04—Roll speed
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B21—MECHANICAL METAL-WORKING WITHOUT ESSENTIALLY REMOVING MATERIAL; PUNCHING METAL
    • B21B—ROLLING OF METAL
    • B21B2275/00—Mill drive parameters
    • B21B2275/02—Speed
    • B21B2275/06—Product speed

Definitions

  • the invention relates to a method for without determining at least one rolling parameter when rolling a rolling stock rolled along a rolling line in a rolling mill comprising at least two rolls on a rolling stand, in which the rolling stock is guided past or through at least one measuring device during rolling, which interacts with a rolling stock size of the rolling stock that varies along the longitudinal extent of the rolling stock and outputs a measurement signal.
  • the invention also relates to a rolling mill comprising at least two rollers arranged on a rolling stand for rolling rolled stock along a rolling line and with a device for online determination of at least one rolling parameter, the determining device comprising at least one measuring device which is arranged on the rolling line and the with a rolling stock size of the rolling stock that varies along the longitudinal extent of the rolling stock can interact and output a measurement signal.
  • a rolling stock which can be, for example, a sheet, a slab, a block, a hollow block, a blank, a hollow blank or a rod, a wire or a tube
  • a rolling stand which carries at least two rollers and has a corresponding shaping effect on the rolling stock that passes or is passed through.
  • rolling stands depending on the specific rolling mill. can also carry more than two rollers, which do not necessarily all have a forming effect on the rolled stock. Rather, if necessary, the rollers can only interact with the rolling stock in a driving or guiding manner, as long as at least two rollers have a correspondingly forming effect on the rolling stock. Accordingly, in particular, several roll stands can be provided, whereby each of the roll stands is adapted to specific functionalities and can carry corresponding rolls.
  • rolling takes place under relatively adverse environmental conditions, since the rolling stock can usually only be sufficiently formed at relatively high temperatures. There are also high levels of scale, dust, steam, etc. in the surroundings of such a rolling mill. This makes it a relatively big challenge to monitor a rolling process online, especially since the rolling stock is usually is also guided past or through the rolling stands along the rolling line at relatively high speeds, so that corresponding measurement results must be provided in a relatively short time if they are to be considered as determined online.
  • the object of the invention is achieved by methods for online determination of at least one rolling parameter and by a rolling mill with a device for online determination of at least one rolling parameter with the features of the independent claims. Further, possibly independent, advantageous embodiments can be found in the subclaims and the following description.
  • a method for online determination of at least one rolling parameter can be used when rolling a rolling stock rolled along a rolling line in a rolling mill comprising at least two rolls on a rolling stand, in which the rolling stock is at least a measuring device is guided past or possibly also passed through a measuring device during rolling, which interacts with a variable size of the rolling stock along the longitudinal extent of the rolling stock and outputs a measuring signal, characterized in that the measuring signal is converted into a frequency space and the rolling parameter from the in The measurement signal transferred to the frequency space is determined in order to be able to provide the rolling parameters online relatively easily and reliably.
  • the rolling stock passes the measuring device with its rolling stock size changing along its longitudinal extent, this results in a measurement signal if the rolling stock size changes accordingly.
  • the transfer of the measurement signal into the frequency space then enables a simple and relatively reliable frequency analysis of the measurement signal.
  • rolling parameters can then be determined if necessary, by assuming that, although the rolling stock should ideally be uniform along its longitudinal extent, deviations from this uniformity are determined and used to determine the Rolling parameters can be used. This applies in particular if it is assumed that the rollers act on the rolling stock with a certain regularity, which is determined by their rotation or rotation. Corresponding out-of-roundness or other markings, etc. of the rollers then cause corresponding fluctuations.
  • Measurement signals whereby individual frequencies can be assigned to specific rolls or to a roll stand supporting these rolls in the frequency space. Such an assignment can be made relatively easily and reliably in the frequency space, so that after this assignment, the rolling parameter can also be provided online in a relatively simple and operationally reliable manner.
  • any suitable space equipped with frequencies as units can be used as a frequency space.
  • the measurement signal recorded over time i.e. the measurement signal initially recorded in the period
  • the measurement signal initially recorded in the period can be transferred sufficiently reliably but also sufficiently quickly.
  • a conversion using a Fourier transformation is recommended here, although it can definitely make sense to finally choose the frequency range, since very high frequencies and also very low frequencies no longer allow any relevant statements to be expected.
  • Fast Fourier transformations or similar transformations which enable a measurement signal to be transferred from the time period to the frequency space, can also easily be used in this regard.
  • a method for online determination of at least one rolling parameter can be used when rolling a rolling stock rolled along a rolling line in a rolling mill comprising at least two rolls on a rolling stand, in which the rolling stock is on at least one measuring device is guided past or through it during rolling, which interacts with a rolling stock size of the rolling stock that varies along the longitudinal extent of the rolling stock and outputs a measurement signal, cumulatively or alternatively characterized in that a frequency inherent in the change in size is determined from the measurement signal and the Rolling parameters are determined based on the specific frequency.
  • a rolling parameter can be provided online relatively easily and reliably if there is a rolling mill, which comprises at least two rolls arranged on a rolling stand for rolling rolled material along a rolling line and a device for online determination of at least one rolling parameter, in which the determination device comprises at least one measuring device which is arranged on the rolling line and which can interact with a rolling stock size of the rolling stock that is variable along the longitudinal extent of the rolling stock and can output a measurement signal, cumulatively or alternatively characterized in that the determination device comprises means for frequency analysis.
  • a frequency inherent in the change in the size of the rolling stock can be determined relatively easily and reliably from the measurement signal by frequency analysis and accordingly also by frequency analysis means. This then enables accordingly. that the rolling parameter can be determined relatively easily and reliably based on the specific frequency.
  • the frequency determination can - as already explained above - be carried out in particular by filters or other suitable measures of the frequency analysis means.
  • the frequency analysis means can then also provide for a transfer of the measurement signal into the frequency space in order to then be able to determine the rolling parameter from the measurement signal transferred into the frequency space.
  • the peripheral speed, the rotation frequency and/or the rolling speed of at least one of the rollers can also be used. This enables a comparison when evaluating the measurement signal with other rolling parameters that are relatively precisely accessible in order to be able to determine online the rolling parameter to be determined, which may otherwise be very difficult to access. It goes without saying that, if necessary, variables proportional to the peripheral speed, the rotational frequency and/or the rolling speed can also be used to determine the rolling parameter to be determined. Here it is usually ultimately a question of the conversion constants, which then enable the measurement signals to be assigned to one another in order to determine the respective rolling parameter.
  • the peripheral speed v roll of a roller can be calculated relatively easily using the formula: transferred into the frequency space and expressed by the rotation frequency f roll - and vice versa. This can be done in a similar way with regard to the rolling speed of a roller, although this is relatively difficult to measure directly. It is understood that, however, other rolling parameters, such as pressure forces acting on the rolls, rolling calibers and positioning positions of the rolls measured in some way, can also be used to determine the desired rolling parameter.
  • a factor -1 must be taken into account here, since the frequency of the change in cross-sectional area of the rolling stock, which is assigned to the rolling stock speed v rod of the rolling stock, is then smaller than the frequency f roll of the unwinding of the roll, i.e. the peripheral speed v roll , which is otherwise in this context would lead to a negative lead ⁇ f . In rarer cases, the lead ⁇ f can also be negative, but this would then also lead to the factor (-1) in order to be able to correctly represent the relationships in equations (2) and (3).
  • the rolling stock speed v rod of the rolling stock behind a rolling stand can then be determined based on the frequency f roll , which was determined from the measurement signal, or based on the measurement signal transferred into the frequency space.
  • the only thing to be determined is the peripheral speed v roll or the rotation frequency f roll or, if applicable, the rolling speed, such determinations ultimately being well known from the prior art.
  • both the advance ⁇ f and the rolling stock speed v rod of the rolling stock behind a rolling stand - and if several rolling stands are used, also for each individual rolling stand - can be determined.
  • This also means that train changes can be detected online. It is also conceivable to determine changes in the coefficient of friction and/or yield curve online. All of these sizes are currently only available offline, and therefore - naturally - not between the individual rolling stands.
  • a frequency analysis of the corresponding measurement signal and / or determination of a frequency inherent in the size of the rolling stock from the measurement signal also enables further new aspects for online or in-situ diagnosis of a rolling process.
  • this diagnosis can be carried out easily and reliably and, with the appropriate design, also very quickly, so that the results can also be used online or in-situ to control or regulate the rolling process.
  • a control device can be, for example, a roll adjustment, by means of which the rolls can be adjusted towards or away from the rolling line in order to influence the rolling caliber in this way.
  • a corresponding adjustment can be achieved, for example, by applying certain forces or by positioning the rollers accordingly.
  • the control device can also enable a rolling mechanism and thus an adjustment of the peripheral speed, the rotation frequency or the rolling speed.
  • a control device includes in particular all the means and devices of a rolling mill with which the behavior of the rolls in relation to the rolling stock can be changed, preferably changed in a targeted manner.
  • a control device for at least one of the rollers is operatively connected to the determination device, so that the determined rolling parameter and/or the specific frequency can be used as a control parameter for the control device.
  • the peripheral speed, the rotation frequency and/or the rolling speed or a size proportional to this, as well as other rolling parameters, can be used for the control in this regard.
  • control device and the determination device are operatively connected to one another in a control loop, so that the control of the corresponding roller can be carried out in a controlled manner via a control loop which uses the measurements of the determination device and/or the determined rolling parameters accordingly for the control .
  • the measuring device is arranged stationary with respect to the rolling mill, at least during rolling. This enables the rolling stock to be or can be guided past or through the measuring device relatively quickly and yet relatively accurate measured values can be recorded. In addition, this provides predictably reliable measurement results, which can then be used to provide the respective rolling parameters online in a correspondingly simple and operationally reliable manner.
  • the measuring device measures perpendicular to the rolling line, integrating and/or averaging over the circumference of the rolling stock. This also enables a relatively quick and reliable measurement, even if this means that there is no need for a spatial resolution that would otherwise be possible around the circumference of the rolling stock.
  • the transfer of the measurement signal into the frequency space or the frequency determination from the measurement signal still make it appear possible to use such integrating or averaging measurements to determine the influence of one of the two rolls or all of the rolls of a roll stand - and at deeper ones Analysis may even determine the influence of rolls that are located on rolling stands further upstream or even on upstream rolling mills, or of other devices that act on the rolling stock, in order to determine the rolling parameter to be determined accordingly or even to be able to determine it more precisely.
  • the measuring device can in particular comprise an eddy current sensor and/or an impedance measurement, since such measuring methods are particularly suitable for adverse environments, as are regularly found in rolling mills. It is understood that other measuring devices may also be used here alternatively or cumulatively, which can accordingly ultimately be determined by the rolling parameter to be determined, which ultimately determines the size of the rolling stock that is to be measured to determine this rolling parameter.
  • an impedance measurement has proven to be advantageous since such a measurement can be implemented in the form of a coil enclosing the rolling stock in a plane perpendicular to the longitudinal extent of the rolling stock, which directly leads to a measurement result that integrates and/or averages over the circumference of the rolling stock.
  • an impedance measurement can also be carried out in close proximity to the rolls or between roll stands, although there are very adverse conditions there, such as high temperatures, a lot of scale, a lot of dust or a lot of steam, and spatially very limited conditions.
  • At least two measuring devices are arranged along the rolling line, which can accordingly enable a more precise measurement result.
  • one of the measuring devices can be arranged in front of and one of the measuring devices behind the respective rolling stand, so that the rolling stock size that varies along the longitudinal extent of the rolling stock can be measured in front of a corresponding rolling stand and after this rolling stand. This then enables a corresponding comparison, so that an even more precise determination of the corresponding rolling parameter is possible.
  • the transfer of the measurement signal into the frequency space explained here or the frequency determination from the measurement signal explained here can be combined with further determination results, such as with the by M. Radschun, A. Jobst, O. Kanoon. J. Himmel ("Non-contarting Velocity Measurements of Hot Rod and Wire Using Eddy-Current Sensors", 2019 IEEE Workshop 2019 , Mülheim ad Ruhr) explained correlations of measurement results in the period, or with other measurement results or rolling parameters determined from them, in order to be able to determine further statements about the rolling process or to determine further rolling parameters. It is conceivable that these further determination results or rolling parameters are not obtained in the frequency space and are only then transferred into the frequency space. It is also conceivable that before further processing of the rolling parameter or parameters determined by the frequency analysis explained here, the transfer of the measurement signal into the frequency space or the frequency determination from the measurement signal as explained here transfers them again from the frequency space into the time period and only there then processed further.
  • the respective measurement signals can be correlated in the frequency space or after a frequency analysis. It is also conceivable to correlate such measurement signals according to the frequency determination explained above or with regard to their correspondingly determined frequency. Such correlations can also provide further information about the rolling process, i.e. serve to determine one or more further rolling parameters.
  • the rolling stock is a bar, a wire or a pipe.
  • measurements can be implemented in a structurally relatively simple manner, integrating and/or averaging over the circumference of the rolling stock.
  • Wire or pipe does not appear to be essential here, for example if an impedance measurement or similar integrating or averaging measurements are to be carried out.
  • rods or tubes are generally often subject to rolling processes, so that the present invention appears to have many uses here.
  • larger rolling stock or larger semi-finished products such as slabs, blocks, hollow blocks, blanks, hollow blanks, can instead be rolled accordingly and also measured accordingly with regard to their rolled stock sizes.
  • the rolling stock is metallic, since the corresponding rolling processes, particularly in the case of metallic rolling stock, take place under extremely adverse environmental conditions, so that correspondingly difficult rolling parameters are required here, in particular for controlling Rollers or otherwise used in a control loop can be determined.
  • metallic rolling stock in particular enables impedance or eddy current measurement, for example through a coil surrounding the rolling stock located on the rolling line.
  • the measured rolling stock size is preferably introduced into the rolling stock at a frequency corresponding to the rotation of the rolls, which, in comparison to rolling stock sizes, which are introduced into the workpiece, for example, by the workpiece's own rotation, leads to significantly higher frequencies of the corresponding rolled stock sizes, whereby these can also be determined using the devices or methods explained here, but in this case it is not about determining the natural rotation frequency , which naturally cannot represent a rolling stock size that varies over the longitudinal extent of the rolling stock.
  • any corresponding rolling stock size of the rolling stock can be used as the rolling stock size of the rolling stock that can be changed along the longitudinal extent of the rolling stock, as long as it is influenced to a sufficient extent by the rolling process, in particular by the rolls.
  • rolling stock sizes that change along the longitudinal extent of the rolling stock come into question, which bring about periodic changes in the rolling stock caused directly by the rolling process of the associated rolls on the rolling stock or which are introduced into the rolling stock by the rolling of at least one of the rollers on the rolling stock.
  • Such periodic changes can be caused, for example, by errors in the rolls, by out-of-roundness or by natural frequencies or internal stresses of the respective roll or the associated roll stand.
  • the rolling mills 10 shown each have rolling stands 11, which carry rolls 12 and can roll a rolling stock 20 in the rolling direction 14 along a rolling line 13.
  • the rolling mill 10 points to this Figure 1 only one such roll stand 11, while the rolling mills 10 Figures 2 and 3 each have five such roll stands 11.
  • other numbers of rolling stands 11 can be provided here, whereby the distances between the rolling stands 11 and the number of rolls 12 which carry the respective rolling stands 11 and their arrangement around the rolling line 13 can also be selected differently depending on the specific rolling mill 10 .
  • the rolling mill 10 of the present exemplary embodiments each includes a stand 16 on which the rolling stands 11 are held. It goes without saying that, depending on the specific rolling mill 10, the stand 16 can be designed as a part of a building, as a roll stand support, as a frame or similar.
  • the rolling mills 10 have a control device 15, by means of which the rolls 12 can be controlled.
  • the control devices 15 each include adjusting means. via which the rollers 12 can be positioned perpendicular to the rolling line 13 in order to adapt them to a specific rolling caliber or to a specific rolling stock 20.
  • the control devices 15 also include a drive for the rollers 2, so that they can drive the rolling stock 20 through the rolling mill 10 along the rolling line 13 in the rolling direction 14.
  • the corresponding rolling mill 10 can also have differently effective control devices 15, for example for only some of the rolls 12, brakes, cooling systems, heaters or the like, which can accordingly influence the rolling process.
  • the rollers 12 not all of the rollers 12 have to be driven off; rather, it is conceivable that the rollers 12 simply rotate.
  • the rolling mills 10 are each designed for rolling stock 20, which extends in a longitudinal extent 21, which is aligned essentially parallel to the rolling line 13. In the specific rolling process, an attempt will be made to control the longitudinal extent 21 of the rolling stock 20 should be aligned on the rolling line 13 if possible. However, minor deviations cannot be ruled out here due to unavoidable tolerances and possibly due to the cross section of the rolling stock 20.
  • the rolling mills 10 can easily be used for sheet-like or strip-shaped rolling stock 20.
  • the rolling mills 10 are designed for, in particular, rod-, wire- or tubular rolling stock 20.
  • the rolling mills 10 each have determination devices 30 for online determination of at least one rolling parameter.
  • the determination device 30 each comprises at least one measuring device 31, which is provided behind a roll stand 11.
  • a measuring device 31 is also provided in front of the first roll stand 11 in the rolling direction 14.
  • the measuring devices 31 are designed to interact with a rolling stock size of the rolling stock 20 that varies along the longitudinal extent 21 of the rolling stock 20 and to output a corresponding measurement signal 40.
  • the measuring devices 31 carry out an impedance measurement through a coil aligned perpendicular to the rolling line 13, which surrounds the rolling line 13 - and therefore also the rolling stock 20 when it runs along the rolling line 13.
  • an impedance measurement can be carried out, which ultimately represents a direct measure of the respective cross-sectional area of the rolling stock 20, so that in this exemplary embodiment, the change in cross-sectional area of the rolling stock 20 as it passes the respective measuring devices 31 or as it passes through the respective measuring devices 31 increases represents the rolling parameters to be determined.
  • the influences of rollers 12 or other tools that act or have acted on the rolling stock 20 can be found to be variable over the longitudinal extent 21 of the rolling stock 20.
  • a specific frequency 41 inherent in the change in the size of the rolling stock i.e. the cross-sectional area, can be determined.
  • the clearly prominent frequency can then be used to determine the rolling parameter rolling stock speed wedge v rod of the rolling stock 20 according to equation (8) or the rolling parameter lead ⁇ r according to equation (3) - for each individual rolling stand 11, in this respect also the peripheral speed v roll of the corresponding rollers 12, which are located in front of the respective measuring device 31, or whose rotation frequency f roll is measured accordingly taking equation (1) into account. If necessary, changes in tension or changes in the coefficient of friction and yield curve can also be determined online accordingly.
  • the measurement signals 40 of the measuring devices 31 are used for other purposes, including in the exemplary embodiment Figure 2 a bus 34 is provided, which connects individual computing units 33, in which the frequency analysis means 32 of the individual roll stands 11 and an output unit to the control device 15 are implemented.
  • a bus 34 is provided, which connects individual computing units 33, in which the frequency analysis means 32 of the individual roll stands 11 and an output unit to the control device 15 are implemented.
  • the measurement signals 40 of a measuring device 31 or the rolling parameters determined by a computing unit 33 can also be made available to other computing units 33.
  • a central computing unit 33 is used to output signals to the control device 15, while a central frequency analysis means 32, which is designed separately from the computing unit 33, analyzes all measurement signals from the measuring devices 31 accordingly.

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  • Mechanical Engineering (AREA)
  • Control Of Metal Rolling (AREA)

Claims (10)

  1. Procédé de détermination en ligne d'au moins un paramètre de laminage lors du laminage d'un produit à laminer (20) laminé dans un laminoir (10) comprenant au moins deux cylindres (12) sur une cage de laminage (11) le long d'une ligne de laminage (13), pour lequel le produit à laminer (20) est une barre ou un tuyau et pour lequel le produit à laminer (20) est passé sur au moins un dispositif de mesure (31) pendant le laminage ou est guidé à travers celui-ci, qui interagit avec une taille de produit à laminer du produit à laminer (20) variable le long de l'extension longitudinale (21) du produit à laminer (20) et émet un signal de mesure (40), caractérisé en ce que le dispositif de mesure (31) mesure en effectuant une intégration et une moyenne perpendiculairement à la ligne de laminage (13) sur la périphérie du produit à laminer (20) et
    (i) en ce que le signal de mesure (40) passe dans un espace fréquentiel et le paramètre de laminage est déterminé à partir du signal de mesure (40) transféré dans l'espace fréquentiel, et/ou
    (ii) en ce qu'une fréquence (41) inhérente à la variation de la taille de produit à laminer est définie à partir du signal de mesure (40) et le paramètre de laminage est déterminé à l'aide de la fréquence définie (41).
  2. Procédé de détermination selon la revendication 1, caractérisé en ce que pour la détermination du paramètre de laminage, on utilise en complément la vitesse périphérique, la fréquence de rotation et/ou la vitesse de déroulement d'au moins un des cylindres ou une valeur proportionnelle à cet effet.
  3. Procédé de détermination selon la revendication 1 ou 2, caractérisé en ce qu'au moins un des cylindres (12) de la cage de laminage (11) est activé en fonction de la fréquence déterminée (41) et/ou du paramètre de laminage déterminé ainsi que, le cas échéant, de la vitesse périphérique, de la fréquence de rotation et/ou de la vitesse de déroulement d'au moins un des cylindres (12) ou d'une valeur proportionnelle à cet effet.
  4. Laminoir (10) comprenant au moins deux cylindres de laminoir (12) disposés sur une cage de laminage (11) pour laminer du produit à laminer (20) le long d'une ligne de laminage (13) ainsi qu'un dispositif (30) de détermination en ligne d'au moins un paramètre de laminage, sachant que le produit à laminer (20) est une barre ou un tuyau et sachant que le dispositif de détermination (30) comprend au moins un dispositif de mesure (31), qui est disposé sur la ligne de laminoirs (13) et qui peut interagir avec une taille de produit à laminer du produit à laminer (20) variable le long de l'extension longitudinale (21) du produit à laminer (20) et émettre un signal de mesure (40), caractérisé en ce que le dispositif de mesure (31) mesure en effectuant une intégration et une moyenne perpendiculairement à la ligne de laminage (13) sur la périphérie du produit à laminer (20) et le dispositif de détermination (30) comprend des moyens (32) pour l'analyse de fréquence, sachant que
    (i) les moyens d'analyse de fréquence (32) prévoient un transfert du signal de mesure (40) dans un espace fréquentiel et le paramètre de laminage est déterminé à partir du signal de mesure (40) transféré dans l'espace fréquentiel, et/ou
    (ii) une fréquence (41) inhérente à la variation de la taille de produit à laminer est définie par les moyens d'analyse de fréquence (32) à partir du signal de mesure (40) et le paramètre de laminage est déterminé à l'aide de la fréquence définie (41) .
  5. Laminoir (10) selon la revendication 4, caractérisé en ce qu'un dispositif de commande (15) pour au moins un des cylindres (12) est relié de façon fonctionnelle au dispositif de détermination (30).
  6. Laminoir (10) selon la revendication (i), caractérisé en ce que le dispositif de commande (15) et le dispositif de détermination (30) sont reliés l'un à l'autre de façon fonctionnelle dans un circuit de régulation.
  7. Procédé de détermination selon l'une quelconque des revendications 1 à 3 ou laminoir (10) selon l'une quelconque des revendications 4 à 6, caractérisé en ce que le dispositif de mesure (31) est disposé de façon fixe par rapport au laminoir (10) au moins pendant le laminage.
  8. Procédé de détermination selon l'une quelconque des revendications 1 à 3 ou 7 ou laminoir (10) selon l'une quelconque des revendications 4 à 7, caractérisé en ce que le dispositif de mesure (31) comprend un capteur à courant de Foucault et/ou une mesure d'impédance.
  9. Procédé de détermination selon l'une quelconque des revendications 1 à 3, 7 ou 8 ou laminoir (10) selon l'une quelconque des revendications 4 à 8, caractérisé en ce qu'au moins deux dispositifs de mesure (13) sont disposés le long de la ligne de laminage (13), de préférence un devant et un derrière la cage de laminage (11) .
  10. Procédé de détermination selon l'une quelconque des revendications 1 à 3 ou 7 à 9 ou laminoir (10) selon l'une quelconque des revendications 4 à 9, sachant que le produit à laminer (20) est métallique.
EP20745088.3A 2019-08-16 2020-06-15 Procédé de détermination en ligne d'au moins un paramètre de laminage et laminoir doté d'un dispositif de détermination en ligne d'au moins un paramètre de laminage Active EP4013556B1 (fr)

Applications Claiming Priority (4)

Application Number Priority Date Filing Date Title
DE102019122129 2019-08-16
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PCT/DE2020/100493 WO2021032233A1 (fr) 2019-08-16 2020-06-15 Procédé de détermination en ligne d'au moins un paramètre de laminage et laminoir doté d'un dispositif de détermination en ligne d'au moins un paramètre de laminage

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FR2735046B1 (fr) * 1995-06-08 1997-07-11 Lorraine Laminage Procede de laminage a froid avec compensation d'ovalisation des cylindres de laminage.
DE10007364A1 (de) * 1999-06-10 2001-03-01 Sms Demag Ag Verfahren zur Zugregelung zwischen den Walzgerüsten von Walzenstraßen für Stabstahl, Draht oder Profile
CN100340353C (zh) * 2003-03-14 2007-10-03 住友金属工业株式会社 管材制造方法和设备及厚度偏差信息获取设备
ITUB20153029A1 (it) * 2015-08-10 2017-02-10 Danieli Automation Spa Metodo per la misura a caldo, durante la laminazione, di una dimensione di profili metallici

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US20220258221A1 (en) 2022-08-18
ES2966067T3 (es) 2024-04-18
EP4013556A1 (fr) 2022-06-22
KR20220044514A (ko) 2022-04-08
WO2021032233A1 (fr) 2021-02-25
JP2022544455A (ja) 2022-10-19

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