EP2637807B1 - Train de laminage servant à produire une bande métallique - Google Patents

Train de laminage servant à produire une bande métallique Download PDF

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Publication number
EP2637807B1
EP2637807B1 EP12701909.9A EP12701909A EP2637807B1 EP 2637807 B1 EP2637807 B1 EP 2637807B1 EP 12701909 A EP12701909 A EP 12701909A EP 2637807 B1 EP2637807 B1 EP 2637807B1
Authority
EP
European Patent Office
Prior art keywords
rolling
metal strip
rolling mill
loop lifter
speed
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.)
Not-in-force
Application number
EP12701909.9A
Other languages
German (de)
English (en)
Other versions
EP2637807A1 (fr
Inventor
Daniel Kotzian
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.)
Primetals Technologies Germany GmbH
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 EP12701909.9A priority Critical patent/EP2637807B1/fr
Publication of EP2637807A1 publication Critical patent/EP2637807A1/fr
Application granted granted Critical
Publication of EP2637807B1 publication Critical patent/EP2637807B1/fr
Not-in-force legal-status Critical Current
Anticipated expiration legal-status Critical

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Classifications

    • 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
    • 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
    • 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
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B21—MECHANICAL METAL-WORKING WITHOUT ESSENTIALLY REMOVING MATERIAL; PUNCHING METAL
    • B21B—ROLLING OF METAL
    • B21B37/00—Control devices or methods specially adapted for metal-rolling mills or the work produced thereby
    • B21B37/48—Tension control; Compression control
    • B21B37/50—Tension control; Compression control by looper control
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B21—MECHANICAL METAL-WORKING WITHOUT ESSENTIALLY REMOVING MATERIAL; PUNCHING METAL
    • B21B—ROLLING OF METAL
    • B21B37/00—Control devices or methods specially adapted for metal-rolling mills or the work produced thereby
    • B21B37/58—Roll-force control; Roll-gap control

Definitions

  • a cold rolling mill for a metal strip is known in which between the first and the second stand of the cold rolling mill a measuring roller is made to the metal strip. The speed of the measuring roller is detected. About the speed of the belt speed is given. The belt speed of the metal strip is used as part of a mass flow control of the first rolling stand. About the design of the speed measuring device nothing is said in the cited document.
  • the object of the present invention is to design a rolling train of the type mentioned in such a way that the speed detection of the loop lifter roller can also be used in a hot rolling mill.
  • the looper pulley is connected via a flexible shaft with a speed measuring device by means of which detects a speed of the looper roller and a control device of the rolling train is supplied. This makes it possible to arrange the speed measuring device outside the influence and danger zone of the hot metal strip and still reliably detect the speed of the looper roll.
  • the flexible shaft may be formed, for example, as a flexible shaft or as an articulated shaft.
  • the speed measuring device is mounted gimbal as such and is slidably mounted in the direction of the looper roll to or from her.
  • the articulated shaft is formed as a telescopic shaft.
  • the speed measuring device should have a sufficient distance from the looper roll.
  • the distance is at least one meter, in particular at least two meters.
  • the rolling stands are connected on a drive side of the rolling mill with rolling mill drives.
  • the speed measuring device is arranged on the drive side.
  • the rolling train is designed as a cold rolling mill.
  • the rolling train is designed as a finishing train for hot rolling of the metal strip.
  • FIG. 1 comprises a rolling mill for rolling a metal strip 1 - in particular a steel strip 1 - a plurality of rolling stands 2.
  • the rolling stands 2 are passed through by the metal strip 1 in succession.
  • the metal strip 1 is rolled successively. Due to the rolling in the rolling stands 2, the thickness d of the metal strip 1 decreases, of course, during each rolling process. Accordingly, a belt speed v increases every rolling. However, only the amount of belt speed v changes. The direction of the belt speed v is always maintained. So there is no reversing rolling.
  • FIG. 1 Is shown in FIG. 1 a three-bar rolling mill. This embodiment is theoretically possible, but not common.
  • the rolling train has six or seven rolling stands 2.
  • the number of rolling stands 2 is arbitrary, as long as at least two rolling stands 2 are available.
  • FIG. 1 is the last roll stand 2 downstream of a cooling section 3.
  • the cooling section 3 is arranged downstream of a reel assembly 4. Due to the fact that the cooling section 3 is present, hot rolling of the metal strip 1 takes place in the rolling train.
  • the rolling train is therefore designed as a finishing train.
  • Looper 5 arranged between the rolling stands 2 between the rolling stands 2 between the rolling stands 2 and according to FIG. 1 Looper 5 arranged.
  • the loop lifters 5 serve in particular to set a desired strip tension ⁇ between the rolling stands 2 and, in the event of disturbances of the strip thickness d and / or the strip speed v, a strip supply for compensation to provide these disturbances.
  • the loop lifter 5 have a loop lifter roller 6, which is freely rotatably mounted in one or two pivotable arms.
  • the looper rollers 6 are employed in the operation of the mill train to the metal strip 1. As a result, the loop lifter roller 6 of the respective loop lifter 5 contacts the metal strip 1. A lifting height of the loop lifter 5 is set such that a predetermined amount of the metal strip 1 is buffered between the adjacent rolling stands 2. The loop heights are kept constant if possible.
  • the looper rollers 6 are, as already mentioned, rotatably mounted, but usually not driven itself.
  • the looper rollers 6 are rotated by the metal band 1 in rotation.
  • the immediately upstream roll stand 2 is a front rolling stand in the sense of the present invention
  • the immediately downstream rolling stand 2 is a rear rolling stand in the sense of the present invention.
  • a loop lifter 5 is always arranged between in each case two immediately successive rolling stands 2. In principle, however, it is also possible that only a few of the rolling stands 2 each have a loop lifter 5 is arranged downstream.
  • FIG. 2 shows a section of the rolling mill of FIG. 1 , In particular shows FIG. 2 two rolling stands 2 including the arranged between the rolling stands 2 loop 5.
  • FIG. 2 Thus, FIG. 1 shows a front rolling stand 2, a rear rolling stand 2 and the loop lifter 5 arranged between these two rolling stands 2.
  • the two rolling stands 2 are provided below with the reference signs 2 'and 2 "to form the front rolling stand 2' and the rear rolling stand 2". to distinguish from each other. A further significance is not the new reference numerals.
  • FIG. 3 shows the looper pulley 6 of the loop lifter 5 of FIG. 2 , an associated speed measuring device 7 and their connection.
  • the looper pulley 6 is connected to the speed measuring device 7 via a flexible shaft 8.
  • a rotational speed n of the loop lifter roller 6 is detected.
  • the detected rotational speed n is fed to a control device 9 of the rolling train.
  • the control device 9 evaluates the rotational speed n of the loop lifter roller 6.
  • the control device 9 can take into account the speed n of the loop lifter roller 6 in the determination of control variables S, S ', S "for the loop lifter 5, the front roll stand 2' and / or the rear roll stand 2".
  • the shaft 8 may be formed as a flexible shaft - similar to the speedometer cable of a motor vehicle. According to the embodiment, it is designed as a hinged shaft.
  • the - articulated - shaft 8 has - see in particular FIG. 3 - Two stub shafts 10, 11, between which a central portion 12 of the shaft 8 is arranged.
  • the stub shaft 10 is connected to the loop lifter roller 6, the stub shaft 11 with the speed measuring device 7.
  • the middle piece 12 is connected to the stub shafts 10, 11 via a respective universal joint 13, 14. Universal joints - often referred to as cardan joints and in English as a universal joint - are well known to professionals.
  • the shaft 8 is due to their design, so the stub shaft 10, 11, the middle piece 12 and the universal joints 13, 14, formed as an articulated shaft 8.
  • the shaft 8 is preferably formed as a telescopic shaft.
  • the telescoping can for example be realized in that the middle piece 12 has two parts 15, 16, although they are axially displaceable against each other, but are rotatably connected to each other.
  • the two parts 15, 16 of the center piece 12 can for this purpose according to the 4 and 5 an inner contour 17 and an outer contour 18, which are out of round, but are coordinated.
  • selected configurations as square contours 17, 18 are purely exemplary. Other contours are possible, such as hexagons, triangles, ellipses, etc.
  • the rolling stands 2 are according to FIG. 2 on a drive side (English: drive side) with rolling mill drives 19 connected.
  • the speed measuring device 7 is arranged on the drive side.
  • a distance a of the speed measuring device 7 from the loop pulley roller 6 should be generously dimensioned.
  • the distance a should, if possible, be two meters or more.
  • a minimum distance of one meter should not be undercut.
  • the distance a is measured from the end face of the bearing pin of the looper roll 6 to the end face of the rotatable part of the speed measuring device 7.
  • the distance a also corresponds to the distance of the stub shaft 10, 11 from each other. Due to the (sufficiently large) distance a, it is in particular possible to arrange the speed measuring device 7 in a housing, by means of which the speed measuring device 7 is protected against heat, water, steam, oil and mechanical damage.
  • the loop lifter 5 is moved by the control device 9 after grasping the strip head by the rear roll stand 2 "controlled such that it is employed with a Sollanstellkraft to the metal strip 1.
  • the control device 9 determines the control variables S, S ', S "for the rolling train often in dependence on whether the looper roll 6, the metal strip 1 contacted or Not. In this case, it is possible, in particular, for the control device 9 to detect the contacting of the metal strip 1 by the loop lifter roll 6 on the basis of a change in the rotational speed n of the loop lifter roll 6.
  • the controller 9 can easily determine the belt speed v of the metal belt 1 from the speed n of the looper roller 6 in conjunction with the diameter thereof. Furthermore, the control device 9 can determine, based on a rotational speed n 'of rollers 20' of the front rolling stand 2 'in conjunction with its diameter, a front roller peripheral speed vU'. On the basis of the front roller peripheral speed vU 'and the belt speed v, the control device 9 can dynamically determine an overfeed of the metal strip 1 expiring from the front rolling stand 2'. In this case, the control device 9 can determine, for example, the control variables S 'for the front rolling stand 2' - in particular its nominal setting - taking into account the determined overfeed.
  • the corresponding peripheral speed vU "and the lag of the metal strip 1 entering the rear rolling stand 2" can be determined for the rear roll stand 2 "on the basis of its rotational speed n".
  • the control device 9 the control variables S "for the rear roll stand 2" - in particular determine its nominal position - taking into account the determined lag.
  • control device 9 directly uses the ascertained advances and retardations. Alternatively, it is possible for the control device 9 to ascertain a model-supported overfeed of the metal strip 1 expiring from the front roll stand 2 'by means of a model not taking into account the speed n of the loop lifter roll 6. In this case, the control device 9 can adapt the model on the basis of the belt speed v determined using the speed n of the loop lifter roller 6. In an analogous manner, it is possible to proceed with regard to the lag of the metal strip 1 entering the rear roll stand 2 ".
  • control device 9 can ascertain a specific strip tension ⁇ on the basis of a setting force with which the loop lifter roller 6 contacts the metal strip 1.
  • the control device 9 can determine the derivative of the lead after the specific strip tension ⁇ on the basis of changes in the specific strip tension ⁇ and the lead of the metal strip 1 expiring from the front roll stand 2 'and the determined derivation within the scope of determining the control quantities S' for take into account the front roll stand 2 '.
  • the control device 9 can determine the time derivative of the specific strip tension ⁇ and the time derivative of the overfeed and determine the derivative of the lead over after the specific strip tension ⁇ by quotient formation. In an analogous manner, it is possible to proceed with regard to the lag of the metal strip 1 entering the rear roll stand 2 ".
  • control device 9 can determine the belt speed v in conjunction with its diameter based on the rotational speed n of the loop lifter roller 6 and the determined belt speed v in the course of tracing sections of the metal belt 1 from the front to the rear rolling mill 2 ', 2 "can be used, for example, to make a pre-control of the rear roll stand 2" at the right time, for example because a thickness error in the front roll stand 2 'could not be completely corrected and the faulty portion of the metal strip 1 now enters the rear roll stand 2 ".

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

Claims (7)

  1. Train de laminoir pour laminer un feuillard (1) métallique,
    - dans lequel le train de laminoir comprend une cage (2') de laminoir avant et une cage (2'') de laminoir arrière, dans lesquelles le feuillard (1) métallique est laminé successivement,
    - le train de laminoir ayant un releveur (5) de boucles, qui est disposé entre les cages (2', 2") de laminoir et qui est mis sur le feuillard (1) métallique, de sorte qu'un rouleau (6), monté tournant du releveur (5) de boucles, entre en contact avec le feuillard (1) métallique et soit mis en rotation par le feuillard (1) métallique allant de la cage (2') de laminoir avant à la cage (2") de laminoir arrière du train de laminoir, caractérisé en ce que
    - le rouleau (6) du releveur de boucles est relié par un arbre (8) souple à un dispositif (7) de mesure de la vitesse de rotation, au moyen duquel une vitesse (n) de rotation du rouleau (6) du releveur de boucles est détectée et est envoyée à un dispositif (9) de commande du train de laminoir.
  2. Train de laminoir suivant la revendication 1,
    caractérisé
    en ce que l'arbre (8) souple est constitué sous la forme d'un arbre pouvant se courber.
  3. Train de laminoir suivant la revendication 1,
    caractérisé
    en ce que l'arbre (8) souple est constitué sous la forme d'un arbre (8) articulé.
  4. Train de laminoir suivant la revendication 3,
    caractérisé
    en ce que l'arbre (8) articulé est constitué sous la forme d'un arbre télescopique.
  5. Train de laminoir suivant l'une des revendications précédentes,
    caractérisé
    en ce que le dispositif (7) de mesure de la vitesse de rotation est à une distance (a) du rouleau (6) du releveur de boucles d'au moins un mètre, de préférence d'au moins deux mètres.
  6. Train de laminoir suivant l'une des revendications précédentes,
    caractérisé
    en ce que les cages (2', 2") de laminoir sont, d'un côté d'entraînement du train de laminoir, reliées à des entraînements (19) de cage de laminoir et en ce que le dispositif (7) de mesure de la vitesse de rotation est disposé du côté de l'entraînement.
  7. Train de laminoir suivant l'une des revendications précédentes,
    caractérisé
    en ce qu'il est constitué en train finisseur pour le laminage à chaud du feuillard (1) métallique.
EP12701909.9A 2011-02-14 2012-02-02 Train de laminage servant à produire une bande métallique Not-in-force EP2637807B1 (fr)

Priority Applications (1)

Application Number Priority Date Filing Date Title
EP12701909.9A EP2637807B1 (fr) 2011-02-14 2012-02-02 Train de laminage servant à produire une bande métallique

Applications Claiming Priority (3)

Application Number Priority Date Filing Date Title
EP11154355A EP2486990A1 (fr) 2011-02-14 2011-02-14 Train de laminage pour laminer une bande de métal
EP12701909.9A EP2637807B1 (fr) 2011-02-14 2012-02-02 Train de laminage servant à produire une bande métallique
PCT/EP2012/051731 WO2012110322A1 (fr) 2011-02-14 2012-02-02 Train de laminage servant à produire une bande métallique

Publications (2)

Publication Number Publication Date
EP2637807A1 EP2637807A1 (fr) 2013-09-18
EP2637807B1 true EP2637807B1 (fr) 2014-12-31

Family

ID=44350624

Family Applications (2)

Application Number Title Priority Date Filing Date
EP11154355A Withdrawn EP2486990A1 (fr) 2011-02-14 2011-02-14 Train de laminage pour laminer une bande de métal
EP12701909.9A Not-in-force EP2637807B1 (fr) 2011-02-14 2012-02-02 Train de laminage servant à produire une bande métallique

Family Applications Before (1)

Application Number Title Priority Date Filing Date
EP11154355A Withdrawn EP2486990A1 (fr) 2011-02-14 2011-02-14 Train de laminage pour laminer une bande de métal

Country Status (3)

Country Link
EP (2) EP2486990A1 (fr)
CN (1) CN103370148B (fr)
WO (1) WO2012110322A1 (fr)

Family Cites Families (9)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS57127517A (en) * 1981-02-02 1982-08-07 Hitachi Ltd Tension controller for rolling mill
JPH04237506A (ja) * 1991-01-18 1992-08-26 Nippon Steel Corp 熱間圧延制御方法及び装置
JP2000312909A (ja) * 1999-04-27 2000-11-14 Toshiba Corp 板幅制御装置
DE19953524A1 (de) * 1999-11-05 2001-05-10 Sms Demag Ag Schlingenheber
AT500765B1 (de) * 2002-09-04 2009-03-15 Voest Alpine Ind Anlagen Verfahren zur reduzierung der bandbreitenänderung
CN2576364Y (zh) * 2002-09-19 2003-10-01 中国第二重型机械集团公司 分节辊活套
DE102008007057A1 (de) 2008-01-31 2009-08-13 Siemens Aktiengesellschaft Regelverfahren für eine Kaltwalzstraße mit vollständiger Massenflussregelung
CN201382832Y (zh) * 2009-03-16 2010-01-13 重庆和平自动化工程有限公司 柔性连接的动力机转矩检测装置
CN201569661U (zh) * 2009-12-18 2010-09-01 河南丰博自动化有限公司 一种测速装置和一种测速机构

Also Published As

Publication number Publication date
CN103370148B (zh) 2015-07-01
EP2486990A1 (fr) 2012-08-15
WO2012110322A1 (fr) 2012-08-23
CN103370148A (zh) 2013-10-23
EP2637807A1 (fr) 2013-09-18

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