EP2477763A1 - Train de laminage à froid à régulation de débit massique sur une cage de laminoir - Google Patents

Train de laminage à froid à régulation de débit massique sur une cage de laminoir

Info

Publication number
EP2477763A1
EP2477763A1 EP10754464A EP10754464A EP2477763A1 EP 2477763 A1 EP2477763 A1 EP 2477763A1 EP 10754464 A EP10754464 A EP 10754464A EP 10754464 A EP10754464 A EP 10754464A EP 2477763 A1 EP2477763 A1 EP 2477763A1
Authority
EP
European Patent Office
Prior art keywords
speed
cold
strip
stand
rolling
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.)
Granted
Application number
EP10754464A
Other languages
German (de)
English (en)
Other versions
EP2477763B1 (fr
Inventor
Hans-Joachim Felkl
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
Original Assignee
Siemens AG
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by Siemens AG filed Critical Siemens AG
Priority to EP10754464.5A priority Critical patent/EP2477763B1/fr
Priority to PL10754464T priority patent/PL2477763T3/pl
Publication of EP2477763A1 publication Critical patent/EP2477763A1/fr
Application granted granted Critical
Publication of EP2477763B1 publication Critical patent/EP2477763B1/fr
Active legal-status Critical Current
Anticipated expiration legal-status Critical

Links

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
    • B21B37/46—Roll speed or drive motor 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
    • B21B37/58—Roll-force control; Roll-gap 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
    • B21B2037/002—Mass flow control
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B21—MECHANICAL METAL-WORKING WITHOUT ESSENTIALLY REMOVING MATERIAL; PUNCHING METAL
    • B21B—ROLLING OF METAL
    • B21B2261/00—Product parameters
    • B21B2261/02—Transverse dimensions
    • B21B2261/04—Thickness, gauge
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B21—MECHANICAL METAL-WORKING WITHOUT ESSENTIALLY REMOVING MATERIAL; PUNCHING METAL
    • B21B—ROLLING OF METAL
    • B21B2271/00—Mill stand parameters
    • B21B2271/02—Roll gap, screw-down position, draft position
    • 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
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B21—MECHANICAL METAL-WORKING WITHOUT ESSENTIALLY REMOVING MATERIAL; PUNCHING METAL
    • B21B—ROLLING OF METAL
    • B21B37/00—Control devices or methods specially adapted for metal-rolling mills or the work produced thereby
    • B21B37/16—Control of thickness, width, diameter or other transverse dimensions
    • B21B37/165—Control of thickness, width, diameter or other transverse dimensions responsive mainly to the measured thickness of the product
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B21—MECHANICAL METAL-WORKING WITHOUT ESSENTIALLY REMOVING MATERIAL; PUNCHING METAL
    • B21B—ROLLING OF METAL
    • B21B37/00—Control devices or methods specially adapted for metal-rolling mills or the work produced thereby
    • B21B37/16—Control of thickness, width, diameter or other transverse dimensions
    • B21B37/18—Automatic gauge control
    • 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 present invention relates to a control method for a cold rolling mill which has a plurality of rolling stands which have passed through a cold strip in succession, wherein an actual speed is detected by measurement, with which the cold strip runs out of one of the rolling stands, wherein a strip thickness is still detected. with which the cold strip from the respective rolling mill runs out.
  • the present invention further relates to a control device for a cold rolling mill, which has a plurality of rolling mills passed through in succession by a cold strip, wherein the control device is supplied with a metrologically detected actual speed with which the cold strip runs out of one of the rolling mills, wherein the control device further comprises a metrologically detected strip thickness with that
  • the present invention further relates to a computer program having machine code which is directly executable by a control device of a multi-stand cold rolling mill and whose execution by the control means causes the control means to control the cold rolling mill according to a control method of the type described in the opening paragraph.
  • the present invention relates to a cold rolling mill
  • the cold rolling mill has a plurality of rolling stands, which have passed through a cold strip in succession,
  • the cold rolling mill has a speed detecting device which is arranged downstream of one of the rolling stands and by means of which a measuring device Actual speed is detected, with which the cold strip runs out of one of the rolling stands,
  • the cold rolling train has a thickness detection device, which is arranged downstream of the respective rolling stand and by means of which a strip thickness is detected, with the
  • the cold rolling mill having a control device of the type described above, so that the cold rolling mill is operated according to a control method of the type described above.
  • WO 2009/095323 A1 the strip thicknesses in front of and behind the first rolling stand of the cold rolling mill and the actual speed of the cold strip behind the first rolling stand of the cold rolling mill are recorded. On the basis of these variables, the setpoint value for the roll circumferential speed of the first roll stand is tracked such that the mass flow through the first roll stand corresponds to a desired mass flow. At the same time, based on the strip thickness and the strip speed in front of the first rolling stand of the cold rolling train, a strip feeding device (for example a reel or an S-roll set) upstream of the first rolling stand is likewise regulated to the desired mass flow.
  • the teaching of WO 2009/095323 AI is based on the principle of the cold strip in front of the first mill stand of the cold rolling mill to impress the desired mass flow over the tape feeder and the strip thickness behind the first stand of the cold rolling mill indirectly over the
  • the approach known from WO 2009/095323 A1 leads to good results if the tape feed device can be controlled in such a way that it actively influences the mass flow ("can impress the desired mass flow") - Although it can passively follow a changed mass flow, it can not actively set the mass flow itself.
  • An example of such a cold rolling train is a cold rolling train in which the belt feed device operates in tension-controlled operation, ie adjusts the mass flow according to the tension prevailing between the strip feed device and the first rolling stand of the cold rolling train in the cold strip.
  • the object of the present invention is to provide possibilities by means of which the mass flow can be set precisely in a simple manner even if the band feeding device arranged upstream of the first rolling stand can not actively set the mass flow.
  • control method having the features of claim 1.
  • Advantageous embodiments of the control method according to the invention are the subject of the dependent claims 2 to 5.
  • That the relevant rolling mill is controlled according to the tracked setpoint for the peripheral roll speed of the respective rolling mill and
  • That a roll gap of the respective rolling mill is tracked based on at least the detected strip thickness such that the product of the actual speed of the cold strip and strip thickness corresponds to a desired mass flow.
  • the desired value for the whale zen entities ist of the respective rolling stand on the basis of the target speed and a model-based determined lead is determined and that the tracking of the target value for the roller peripheral speed of the respective rolling mill is realized by the model, by means of which the lead is determined, adapted by comparing the actual speed with the target speed becomes.
  • control method according to the invention can in principle be used in any of the rolling stands of the cold rolling mill. It is also possible to use the control method according to the invention simultaneously with several rolling stands of the cold rolling mill. It is preferred that at least the rolling mill of the cold rolling train, which is first passed through by the cold strip, is regulated in accordance with the invention.
  • the object is also achieved by a device with the features of claim 6.
  • Advantageous embodiments of the control device according to the invention are the subject of the dependent claims 7 to 10. According to the invention it is provided that the control device - in addition to the features mentioned above -
  • control device correspond in content to those of the control method.
  • control device can be designed as a software programmable control device.
  • the object is further achieved by a computer program of the type mentioned above, whose execution by the control device causes the control device controls the cold rolling train according to a control method according to the invention.
  • the computer program can be stored on a data carrier in machine-readable form.
  • FIG 3 shows a preferred embodiment of a roll gap control.
  • a cold rolling mill for rolling a cold strip 1 has a plurality of rolling stands 2.
  • the rolling stands 2 are passed through by the cold strip 1 in succession.
  • the cold rolling line being preceded by a strip feeding device 3 via which the cold strip 1 passes to the first rolling stand 2 1, at least one of the rolling stands 2-according to the illustration of FIG 1 to the first rolling stand 2-1-is followed by a speed detection device 4.
  • a speed detection device 4 metrologically detected an actual speed v, with the cold strip 1 from the responsiblese upstream 4 upstream
  • Roll stand 2 (here: the first roll stand 2-1) expires.
  • the detected actual speed v is - with the exception of unavoidable measuring errors - directly with the actual speed the cold strip 1 identical.
  • the actual velocity v is not a circumferential roll speed vU of the upstream roll stand 2, that is to say a size that is linked to the actual speed of the cold strip 1 only via an overfeed.
  • it is not a roller peripheral speed vU 'of a downstream roll stand 2, as shown in FIG 1 of the roll stand 2-2.
  • the design of the speed detection device 4 can take place as needed.
  • a roller can be placed against the cold strip 1, which moves along with the cold strip 1 and its rotational speed is detected, for example by means of a pulse generator.
  • Optical measuring methods in particular laser measuring methods, are also known.
  • the same rolling mill 2-1 is further downstream of a thickness detection device 5.
  • a strip thickness d is metrologically detected, with which the cold strip 1 from the thickness of the detection device 5 upstream rolling stand 2 (here: the first rolling stand 2-1) expires.
  • the detection of the actual speed v is possible virtually without delay.
  • the exact arrangement of the speed detection device 4 is therefore of secondary importance.
  • the detection of the strip thickness d can only be delayed, since the strip thickness d can be detected only locally at the location of the Dickenerfas- device 5 and passes from the expiry of the cold strip 1 from the upstream rolling stand 2-1 until reaching the thickness detection device 5, a transport time.
  • the thickness detection device 5 is arranged as close as possible to the upstream rolling stand 2-1 in order to keep the transport time as low as possible and therefore to achieve the highest possible dynamics.
  • the detected actual speed v and the detected strip thickness d are fed to a control device 6 of the cold rolling train.
  • the control device 6 evaluates the actual speed v supplied to it and the strip thickness d supplied to it and controls the respective rolling stand 2-according to the embodiment of FIG. 1, the first rolling stand 2-1-correspondingly. This is done as follows:
  • the control device 6 compares the detected
  • control device 6 can, in the simplest case, implement an underlying controller structure as shown in FIG.
  • the controller determines the setpoint value vU * for the roller circumferential speed vU; an inner controller regulates the roller circumferential speed vU based on the difference of the setpoint value vU * for the roller peripheral speed vU and the roller peripheral speed vU itself.
  • the procedure is different. The preferred procedure is explained in more detail below in conjunction with FIG.
  • the reciprocal of the overfeed a is fed to a multiplier 8, which determines the corresponding desired value vU * for the circumferential roll speed vU on the basis of the setpoint speed v * of the cold strip 1.
  • a correction factor k is determined on the basis of which the setpoint velocity v * and actual velocity v of the cold strip 1 are compared-in particular on the basis of the difference - by means of which the roll gap model 7 is adapted. Due to the adaptation of the roll gap model 7, the overfeed a determined by the roll gap model 7 changes (inter alia).
  • the tracking of the setpoint value vU * for the circumferential roll speed vU is therefore implemented indirectly according to FIG. 2, namely by adapting the roll gap model 7 to the setpoint speed v * on the basis of the comparison of the actual velocity v of the cold strip 1.
  • the control device 6 further performs, by means of a corresponding manipulated variable s *, a rolling gap s of the respective rolling stand 2-1 in such a way that the product of the actual speed v of the cold strip 1 and the strip thickness d corresponds to a desired mass flow M *. It is possible according to the illustration of FIG. 1 that the control device 6 tracks the roll gap s exclusively on the basis of the strip thickness d (and a corresponding desired thickness d *). Because due to the regulation of the actual speed v of the cold strip 1 to the desired speed v * also this type of tracking results in a defined mass flow. However, according to FIG.
  • the control device 6 can be implemented in individual cases circuit technology. As a rule, however, the control device 6 is designed as a software programmable control device 6 in accordance with the representation of FIG. This is indicated by the letters " ⁇ " (for microprocessor) in FIG 1. In this case, the control device 6 executes a computer program 10 with which the control device 6 is programmed The computer program 10 has machine code 11, which is shown in FIG The execution of the machine code 11 by the control device 6 in this case causes the control device 6 to control the cold rolling train according to the control method explained above.
  • the computer program 10 can be supplied to the control device 6 in any manner.
  • a supply via a computer-computer connection is possible.
  • suitable computer-computer connections are a local area network (LAN) and the World Wide Web.
  • LAN local area network
  • LAN local area network
  • a data carrier 12 on which the computer program 10 is stored in machine-readable form.
  • suitable data carriers 12 are a CD-ROM, a USB memory stick or an SD memory card.
  • the data carrier 12 is designed as a USB memory stick.
  • the present invention has many advantages.
  • a defined mass flow and at the same time a correct strip thickness can be achieved in a simple manner. Therefore, it is only necessary for the roll stands 2, which are arranged downstream of the roll stand 2-1 regulated according to the invention, to correctly set the roll peripheral speed vU 'of the respective roll stand 2.
  • This can alternatively take place in that behind the respective rolling stand 2 (for example, the second rolling stand 2-2) by means of a corresponding speed detection device 13, the actual Actual speed is detected and controlled behind this rolling stand 2 or that over a corresponding roll gap model, the respective overfeed is modeled and in this rolling stand 2-2 outlet side desired belt speed is converted into the corresponding circumferential roll speed vU '.
  • a conventional monitor control for the last fine correction of the final strip thickness that is, for the strip thickness of the cold strip 1 behind the last roll stand 2-n
  • the regulation of the mass flow according to the invention shows its advantages not only under static operating conditions, but above all under dynamically changing operating conditions such as, for example, the threading operation, the passage of a weld seam or the changing of the setpoint speed v *. It also results in these operating conditions improved dimensional accuracy of the final strip thickness. Furthermore, the extent of the required adaptation of the roll gap model 7 is a direct indication of the quality of the roll gap model 7. This indication can also be used generally for the optimization of process models for the cold rolling mill. The dynamic of the control is limited - even in dynamic operating conditions - only by the speed of the cruise control. Furthermore, a continuation of the operation of the cold rolling mill is possible even in case of failure of the speed detection.

Landscapes

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

Abstract

La présente invention concerne un train de laminage à froid qui présente plusieurs cages de laminoir (2) dans lesquelles un feuillard laminé à froid (1) passe successivement. Une vitesse réelle (v) à laquelle le feuillard laminé à froid (1) sort d'une (2-1) des cages de laminoir (2) est mesurée. La vitesse réelle mesurée (v) est comparée à une vitesse théorique correspondante (v*). A l'aide de cette comparaison, une valeur théorique (vU*) d'une vitesse périphérique de cylindre (vU) de la cage de laminoir concernée (2-1) est ajustée de manière que la vitesse réelle (v) soit adaptée à la vitesse théorique (v*). La cage de laminoir concernée (2-1) est commandée en fonction de la valeur théorique ajustée (vU*) de la vitesse périphérique de cylindre (vU) de la cage de laminoir concernée (2-1). Ensuite, une épaisseur de feuillard (d) à laquelle le feuillard laminé à froid (1) sort de la cage de laminoir concernée (2-1) est détectée. Une emprise (s) de la cage de laminoir concernée (2-1) est ajustée au moins à l'aide de l'épaisseur de feuillard (d) détectée, de manière que le produit de la vitesse réelle (v) du feuillard laminé à froid (1) par l'épaisseur du feuillard (d) corresponde à un débit massique théorique (M*).
EP10754464.5A 2009-09-17 2010-09-10 Train de laminoir à froid doté d'une régulation du débit massique sur une cage de laminoir Active EP2477763B1 (fr)

Priority Applications (2)

Application Number Priority Date Filing Date Title
EP10754464.5A EP2477763B1 (fr) 2009-09-17 2010-09-10 Train de laminoir à froid doté d'une régulation du débit massique sur une cage de laminoir
PL10754464T PL2477763T3 (pl) 2009-09-17 2010-09-10 Zespół walcowniczy do walcowania na zimno z regulowaniem strumienia masy na klatce walcowniczej

Applications Claiming Priority (3)

Application Number Priority Date Filing Date Title
EP09170489A EP2298461A1 (fr) 2009-09-17 2009-09-17 Train de laminoir à froid doté d'une régulation du débit massique sur une cage de laminoir
EP10754464.5A EP2477763B1 (fr) 2009-09-17 2010-09-10 Train de laminoir à froid doté d'une régulation du débit massique sur une cage de laminoir
PCT/EP2010/063277 WO2011032888A1 (fr) 2009-09-17 2010-09-10 Train de laminage à froid à régulation de débit massique sur une cage de laminoir

Publications (2)

Publication Number Publication Date
EP2477763A1 true EP2477763A1 (fr) 2012-07-25
EP2477763B1 EP2477763B1 (fr) 2014-04-30

Family

ID=41796456

Family Applications (2)

Application Number Title Priority Date Filing Date
EP09170489A Withdrawn EP2298461A1 (fr) 2009-09-17 2009-09-17 Train de laminoir à froid doté d'une régulation du débit massique sur une cage de laminoir
EP10754464.5A Active EP2477763B1 (fr) 2009-09-17 2010-09-10 Train de laminoir à froid doté d'une régulation du débit massique sur une cage de laminoir

Family Applications Before (1)

Application Number Title Priority Date Filing Date
EP09170489A Withdrawn EP2298461A1 (fr) 2009-09-17 2009-09-17 Train de laminoir à froid doté d'une régulation du débit massique sur une cage de laminoir

Country Status (6)

Country Link
EP (2) EP2298461A1 (fr)
CN (1) CN102481608B (fr)
BR (1) BR112012006033A2 (fr)
PL (1) PL2477763T3 (fr)
RU (1) RU2518831C2 (fr)
WO (1) WO2011032888A1 (fr)

Families Citing this family (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP2581142A1 (fr) * 2011-10-13 2013-04-17 Siemens Aktiengesellschaft Procédé de détermination d'une vitesse de produits à laminer
US10799924B2 (en) * 2017-08-01 2020-10-13 Sms Group Gmbh Mass flow regulation in roller devices
DE102022211278B3 (de) * 2022-10-25 2023-12-28 Sms Group Gmbh Verfahren und Computerprogramm zum Anpassen des Soll-Dickenwertes für eine Regelung der Dicke eines neu zu walzenden Bandes für mindestens ein Walzgerüst

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Publication number Priority date Publication date Assignee Title
SU500841A1 (ru) * 1974-03-04 1976-01-30 Свердловское Отделение Государственного Проектного Института "Проектмонтажавтоматика" Устройство дл автоматического регулировани толщины и обжати полосы на стане холодной прокатки
JP3114943B2 (ja) * 1991-06-03 2000-12-04 川崎製鉄株式会社 圧延機における圧延材の板厚制御方法
JPH05169126A (ja) * 1991-12-26 1993-07-09 Siemens Ag コールドストリップ圧延設備のための制御方法
JP3147265B2 (ja) * 1993-05-28 2001-03-19 川崎製鉄株式会社 連続圧延機の速度制御方法
JPH0857509A (ja) * 1994-08-22 1996-03-05 Toshiba Corp タンデム圧延機の制御装置
RU2193937C1 (ru) * 2001-04-23 2002-12-10 Открытое акционерное общество "Уральский завод тяжелого машиностроения" Способ управления внутренней клетью непрерывного стана холодной прокатки полосы
JP3947116B2 (ja) * 2003-02-26 2007-07-18 東芝三菱電機産業システム株式会社 連続圧延機の走間板厚変更装置
JP2004268084A (ja) * 2003-03-07 2004-09-30 Jfe Steel Kk タンデム圧延機の板厚制御方法
CN101553326B (zh) * 2006-11-20 2013-02-27 三菱日立制铁机械株式会社 冷轧材料制造设备及冷轧方法
DE102007049062B3 (de) * 2007-10-12 2009-03-12 Siemens Ag Betriebsverfahren zum Einbringen eines Walzguts in ein Walzgerüst eines Walzwerks, Steuereinrichtung und Walzwerk zum Walzen eines bandförmigen Walzgutes
DE102008007057A1 (de) 2008-01-31 2009-08-13 Siemens Aktiengesellschaft Regelverfahren für eine Kaltwalzstraße mit vollständiger Massenflussregelung

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Also Published As

Publication number Publication date
EP2298461A1 (fr) 2011-03-23
EP2477763B1 (fr) 2014-04-30
CN102481608A (zh) 2012-05-30
BR112012006033A2 (pt) 2019-09-24
CN102481608B (zh) 2014-07-02
RU2518831C2 (ru) 2014-06-10
PL2477763T3 (pl) 2014-10-31
RU2012111278A (ru) 2013-10-27
WO2011032888A1 (fr) 2011-03-24

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