EP2512700B1 - Procédé permettant de faire fonctionner un cylindre enrouleur d'un four bobineur pour un laminoir à chaud fonctionnant de manière réversible, dispositif de commande et/ou de régulation et laminoir à chaud fonctionnant de manière réversible - Google Patents

Procédé permettant de faire fonctionner un cylindre enrouleur d'un four bobineur pour un laminoir à chaud fonctionnant de manière réversible, dispositif de commande et/ou de régulation et laminoir à chaud fonctionnant de manière réversible Download PDF

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Publication number
EP2512700B1
EP2512700B1 EP10784742.8A EP10784742A EP2512700B1 EP 2512700 B1 EP2512700 B1 EP 2512700B1 EP 10784742 A EP10784742 A EP 10784742A EP 2512700 B1 EP2512700 B1 EP 2512700B1
Authority
EP
European Patent Office
Prior art keywords
winding drum
angle
phi
winding
time
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
EP10784742.8A
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German (de)
English (en)
Other versions
EP2512700A1 (fr
Inventor
Matthias Kurz
Heiko Nitschke
Lielie Wang
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
Primetals Technologies Germany 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
Application filed by Primetals Technologies Germany GmbH filed Critical Primetals Technologies Germany GmbH
Priority to EP10784742.8A priority Critical patent/EP2512700B1/fr
Publication of EP2512700A1 publication Critical patent/EP2512700A1/fr
Application granted granted Critical
Publication of EP2512700B1 publication Critical patent/EP2512700B1/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
    • B21C—MANUFACTURE OF METAL SHEETS, WIRE, RODS, TUBES, PROFILES OR LIKE SEMI-MANUFACTURED PRODUCTS OTHERWISE THAN BY ROLLING; AUXILIARY OPERATIONS USED IN CONNECTION WITH METAL-WORKING WITHOUT ESSENTIALLY REMOVING MATERIAL
    • B21C47/00—Winding-up, coiling or winding-off metal wire, metal band or other flexible metal material characterised by features relevant to metal processing only
    • B21C47/003—Regulation of tension or speed; Braking
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B21—MECHANICAL METAL-WORKING WITHOUT ESSENTIALLY REMOVING MATERIAL; PUNCHING METAL
    • B21B—ROLLING OF METAL
    • B21B1/00—Metal-rolling methods or mills for making semi-finished products of solid or profiled cross-section; Sequence of operations in milling trains; Layout of rolling-mill plant, e.g. grouping of stands; Succession of passes or of sectional pass alternations
    • B21B1/22—Metal-rolling methods or mills for making semi-finished products of solid or profiled cross-section; Sequence of operations in milling trains; Layout of rolling-mill plant, e.g. grouping of stands; Succession of passes or of sectional pass alternations for rolling plates, strips, bands or sheets of indefinite length
    • B21B1/30—Metal-rolling methods or mills for making semi-finished products of solid or profiled cross-section; Sequence of operations in milling trains; Layout of rolling-mill plant, e.g. grouping of stands; Succession of passes or of sectional pass alternations for rolling plates, strips, bands or sheets of indefinite length in a non-continuous process
    • B21B1/32—Metal-rolling methods or mills for making semi-finished products of solid or profiled cross-section; Sequence of operations in milling trains; Layout of rolling-mill plant, e.g. grouping of stands; Succession of passes or of sectional pass alternations for rolling plates, strips, bands or sheets of indefinite length in a non-continuous process in reversing single stand mills, e.g. with intermediate storage reels for accumulating work
    • B21B1/34—Metal-rolling methods or mills for making semi-finished products of solid or profiled cross-section; Sequence of operations in milling trains; Layout of rolling-mill plant, e.g. grouping of stands; Succession of passes or of sectional pass alternations for rolling plates, strips, bands or sheets of indefinite length in a non-continuous process in reversing single stand mills, e.g. with intermediate storage reels for accumulating work by hot-rolling
    • 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
    • B21B37/52—Tension control; Compression control by drive motor control
    • B21B37/54—Tension control; Compression control by drive motor control including coiler drive control, e.g. reversing mills

Definitions

  • the invention relates to a method for an improved procedure in a winding process for metal strip in the context of a reversing processing of metal strip in a hot rolling mill.
  • the tape threads for intermediate heating in the slot or gap of the winding drum of the coiler furnace As a rule, the winding drum of the winding furnace, on which the tape is to be wound up, stands still. After completing the threading process, the winding drum is accelerated to wind up the tape and train between reel and scaffolding.
  • the tape is jerked at some point during the rotation of the winding drum. If a tensile stress is built up, the operation of the drive is converted from a speed control to a torque control. The regulation takes place in such a way that a predetermined tension setpoint is maintained within certain tolerances.
  • a disadvantage of this solution is that it can come out of the threading gap by the jerk to a pulling out of the tape.
  • this can cause problems lead up to the termination of the winding process, since the jerk described above, for example, can lead to the loosening of the threaded tape in the winding drum.
  • any relative movement of the wound strip or its strip surface to the winding drum or to another wound section of the same strip leads to visible surface damage, in particular scratches. This leads to an undesirable reduction in the economic value of the belt.
  • JP 1 170517 A there is known an operating method for a reversing hot rolling mill in which a rolled steel material is introduced into the slot of a winding drum, the rotational speed of the winding drum being increased to a given starting speed which is greater than the rolling speed.
  • the object of the present invention is to reduce or avoid the above disadvantages.
  • the object of the invention is therefore to provide a method and an apparatus by means of which a trouble-free as possible threading is made possible in the coiler oven.
  • the procedural part of the object is achieved by a method for operating a winding drum of a coiler furnace for a reversing hot rolling mill, wherein a wound on the winding drum belt length is determined in dependence on a rotation angle of the winding drum, wherein the winding drum on the winding drum length is determined as a function of time, wherein a first, smaller angle or a first Point of the winding drum circumference in the winding direction and a second, larger angle or a second arranged in the winding direction behind the first point point of Wickeltrommellets be at which at the earliest or later a strip tension between rolling mill and winding drum is to be constructed, the winding drum is operated in such a way in that between the smaller angle or the first point and the larger angle or the second point there exists at least one angle or a winding drum circumferential point at which the length of tape winding on the winding drum is equal to the sic h on the winding drum winding tape length as a function of time.
  • the time-minimum travel curve for the smaller angle and the larger angle is determined.
  • the band length is determined as a function of time for the smaller and the larger angle from the determined time.
  • the tape length is known, which is wound up at the predetermined time on the winding drum.
  • the adjustment of the angle at which the length of tape wound up on the winding drum as a function of a rotation angle becomes equal to the length of tape wound on the winding drum depending on the time is set by adjusting the belt speed.
  • the belt speed in this case is a free parameter which provides the flexibility to adjust the angle at which the belt length as a function of the angle of rotation is equal to the length of belt wound on the winding drum.
  • the adjustment of the angle at which the length of tape winding up on the winding drum as a function of an angle of rotation is equal to the length of tape wound on the winding drum as a function of time, by changing the angle within the smaller and larger angle set.
  • This is an alternative approach to using tape speed as a free parameter. This allows the most trouble-free and minimal time Anwickeln by the angle between the smaller and the larger angle at which the wound up on the winding drum tape length as a function of rotation angle equal to the wound up on the winding drum tape length as a function of time, variably adjustable is.
  • a torque for a drive device of the winding drum is determined, which causes a kinking of an inserted into the winding gap tape end.
  • the end of the tape is well fixed in the winding drum. This in turn reduces the risk that the tape end dissolves when winding from the winding drum or from the winding nip. Rather, the tape end is additionally fixed in this way.
  • the geometry of the winding device in particular driver roller, pulley, winding drum, especially in a determination of the travel curve is taken into account.
  • the determined driving curves take account of drive limits, in particular including the for the turn of the tape head required moment.
  • the acceleration given by the travel curve to the drive can be reduced because the drive could not follow a uniform acceleration due to the moment required for the turn of the belt.
  • This feedforward control is preferably carried out as pre-control.
  • the tape speed required for threading can also be reduced.
  • the winding nip is the opening of the winding drum, in which the tape head is inserted in order to wind the tape can.
  • According to the invention can be driven at excessive speed in the temporal areas in which the tape hangs freely. That
  • tape length is caught up in comparison to the prior art, so that to achieve the angle at which train is built, can be used on a much smaller value for the leadership factor as in the old solution. That the speed increase of the drum or winding drum relative to the band is significantly smaller. This noticeably reduces the jerk during winding.
  • the invention provides the advantage that at slow belt speeds or large angles at which a tensile structure occurs, the occurring accelerations are reduced compared to the prior art, which contributes to an increase in the service life of the mechanism.
  • the torque limit of the drive can be reduced according to the train setpoint. This results in a lower risk of the band break or the withdrawal of the tape from the slot or winding nip.
  • the object is achieved by a control and / or regulating device for a winding drum of a coiler furnace of a reversing working hot rolling mill, with a machine-readable program code, which comprises control commands which the control and / or regulating device for performing the method according to one of claims 1 to 8 cause.
  • a device from a hot rolling mill for reversibly hot rolling of rolling stock with at least one reel furnace comprising a winding drum and a control and / or regulating device according to claim 9, wherein the winding drum and the control and / or regulating device are operatively connected.
  • FIG. 1 shows a schematically illustrated Steckel rolling mill.
  • the Steckel rolling mill 1 comprises at least one rolling stand 2 for hot rolling of rolling stock, in particular metal strip B.
  • Es can be a rolling mill or it can be provided several stands.
  • This Steckel furnace 3 or 4 is used for heating and storage of the hot rolling stock between two rolling passes.
  • each Steckel furnace comprises a winding drum 5 or 6, on which the hot strip B after the rolling pass - subject to a final rolling pass - is wound up.
  • the band B is supplied to the Steckel furnace 3 or 4 and clamped in the winding drum.
  • the winding drum 5 or 6 and the at least one rolling stand is operatively connected to a control and / or regulating device.
  • the peripheral speed of the winding drum, its torque and other operating parameters can be set with the control and / or regulating device.
  • the control and / or regulating device 7 the at least one rolling stand 2, in particular the rolling speed can be controlled.
  • the control and / or regulating device 7 is designed to carry out an embodiment of the method according to the invention.
  • machine-readable program code 9 is stored on the control and / or regulating device, comprising control commands which cause the control and / or regulating device 7 to carry out the method.
  • the deposit of the machine-readable program code 9 can take place by means of a storage medium 8.
  • the control and / or regulating device may have a programmable storage medium on which the program code can be stored for execution.
  • the program code 9 can also be transmitted to the control and / or regulating device 7 via a network.
  • FIG. 2 shows a flow chart, which can be exemplary run on the control and / or regulating device to control the winding of hot strip after a roll pass.
  • the flow chart assumes that the hot strip has not yet reached the winding drum, but in the near future, a winding of hot strip is intended.
  • a first method step 101 the angle-dependent tape length l (phi) wound by the drum or winding drum is determined as a function of its angle of rotation phi by a drum or winding drum.
  • account is taken of input parameters: e.g. the geometric structure of the winding system including positions of the deflection roller and the driver roller, the radius of the winding drum, and an angle to which the tape is further fed into the slot or winding nip.
  • the time-dependent strip length l (t) is determined as a function of time t from the start of rotation of the winding drum by means of a second computer module.
  • the belt speed is to be considered.
  • a third method step 103 the torque of the drive required for bending the strip is determined by means of a third calculation module. This can be determined taking into account the parameters yield stress of the material and strip geometry, in particular thickness, width, etc ..
  • a time-optimal or time-minimum travel curve of the winding drum is calculated by means of a fourth calculation module for a given angle. This is done taking into account in particular the maximum possible acceleration and / or maximum angular drum speed as a function of the angle. Furthermore, the desired peripheral speed, which should be achieved when reaching the predetermined angle, pretend.
  • a fifth method step 105 the optimum driving curve is determined.
  • a minimum angle phi1 and a maximum angle phi2 are specified for a pull point.
  • the traction point is an angle which is characterized in that when the optimal trajectory curve is traveled at this angle, the strip length ascertained in the first calculation step is equal to the run-in strip length determined in calculation step 2. That from this point onwards - with further rotation of the drum at a peripheral speed which is higher than the belt speed - tension should be built up against the rolling stand.
  • the maximum possible acceleration, the maximum torque, and the maximum circumferential speed of the winding drum are taken into account here. Furthermore, a guide factor with an amount greater than 1 with regard to the speed of the incoming tape is taken into account.
  • method step 105 first the minimum time t1 to reach the minimum pull point phi1 and the minimum time t2 to reach the maximum pull point phi2 are determined.
  • the drive limits and the respective predetermined smaller or larger angle or pull point used as a predetermined angle is the incoming belt speed times the leading factor.
  • the entire travel curve is known and it can be determined from the required minimum time t1 or t2 for driving off the travel curve.
  • the run-in time-dependent band length l (t1) and l (t2) are respectively determined with the second arithmetic module for the minimum times t1 and t2.
  • the search for the acceleration, the traction point or the threading speed is a one-dimensional search for zeros.
  • several methods are available to the person skilled in the art.
  • the determined parameters are then applied to the winding drum via the control and / or regulating device so that it can be operated on the basis of the embodiment of the method according to the invention.
  • the determination of the travel curve is preferably implemented in a level 2 system of automation.
  • the Level 2 system transfers the travel curve to Level 1 automation.
  • the speed as a function of the angle is currently transmitted to a number of nodes. It is also conceivable to specify the angle as a function of time at variable interpolation points, or to select other representations.
  • the curve from the interpolation points is now determined at a high number of cycles and the setpoint for the speed is passed on to the drive. It is also conceivable to integrate the travel curve directly into a drive solution.

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  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Winding, Rewinding, Material Storage Devices (AREA)
  • Control Of Metal Rolling (AREA)

Claims (12)

  1. Procédé permettant de faire fonctionner un cylindre enrouleur (5, 6) d'un four bobineur (3, 4) pour un laminoir à chaud (1) fonctionnant de manière réversible, une longueur de bande (1) s'enroulant sur le cylindre enrouleur (5, 6) étant d'abord déterminée en fonction d'un angle de rotation (phi) du cylindre enrouleur (5, 6), la longueur de bande (1) amenée et s'enroulant sur le cylindre enrouleur (5, 6) étant ensuite déterminée en fonction du temps (t), un premier angle plus petit (phi1) ou un premier point de la circonférence du cylindre enrouleur dans la direction d'enroulement et un second angle plus grand (phi2) ou un second point de la circonférence du cylindre enrouleur situé derrière le premier point dans la direction d'enroulement au niveau desquels une traction de bande entre la cage de laminoir (2) et le cylindre enrouleur (5, 6) doit être établie au plus tôt ou au plus tard étant prédéfinis, le cylindre enrouleur (4, 5) étant actionné de telle sorte qu'il existe, entre l'angle plus petit (phi1) ou le premier point et l'angle plus grand (phi2) ou le second point, au moins un angle ou un point de la circonférence du cylindre enrouleur pour lequel la longueur de bande (1) s'enroulant sur le cylindre enrouleur (5, 6) en fonction d'un angle de rotation (phi) est égale à la longueur de bande (1) amenée et s'enroulant sur le cylindre enrouleur en fonction du temps (t).
  2. Procédé selon la revendication 1, une courbe de déplacement en temps minimal du cylindre enrouleur (5, 6) étant déterminée, pour un angle prédéfini, dans le cadre de conditions limites techniques et/ou technologiques à respecter, notamment de limites techniques de l'entraînement du cylindre enrouleur (5, 6).
  3. Procédé selon la revendication 2, la courbe de déplacement en temps minimal pour l'angle plus petit (phi1) et l'angle plus grand (phi2) étant déterminée.
  4. Procédé selon la revendication 3, un temps (t1, t2) permettant d'atteindre l'angle plus petit (phi1) ou l'angle plus grand (phi2) étant déterminé à partir de la courbe de déplacement en temps minimal pour l'angle plus petit (phi1) et l'angle plus grand (phi2).
  5. Procédé selon la revendication 4, la longueur de bande (1) en fonction du temps (t) étant déterminée à chaque fois à partir du temps déterminé (t1, t2) pour l'angle plus petit (phi1) et l'angle plus grand (phi2).
  6. Procédé selon l'une des revendications 1 à 5, le réglage de l'angle pour lequel la longueur de bande (1) s'enroulant sur le cylindre enrouleur (5, 6) en fonction d'un angle de rotation (phi) est égale à la longueur de bande (1) amenée et s'enroulant sur le cylindre enrouleur en fonction du temps (t) étant ajusté en réglant la vitesse de la bande.
  7. Procédé selon l'une des revendications 1 à 6, le réglage de l'angle pour lequel la longueur de bande (1) s'enroulant sur le cylindre enrouleur (5, 6) en fonction d'un angle de rotation (phi) est égale à la longueur de bande (1) amenée et s'enroulant sur le cylindre enrouleur (5, 6) en fonction du temps (t) étant ajusté en modifiant l'angle à l'intérieur de l'angle plus petit et plus grand (phil, phi2).
  8. Procédé selon l'une des revendications 1 à 7, un couple de rotation pour un dispositif d'entraînement du cylindre enrouleur (5, 6) provoquant une déviation d'une extrémité de bande introduite dans la fente d'enroulement étant déterminé.
  9. Dispositif de commande et/ou de régulation (7) pour cylindre enrouleur (5, 6) d'un four bobineur (3, 4) d'un laminoir à chaud (1) fonctionnant de manière réversible, avec un code de programme (9) lisible sur machine qui comprend des instructions de commande qui font exécuter par le dispositif de commande et/ou de régulation (7) le procédé selon l'une des revendications 1 à 8.
  10. Laminoir à chaud (1) pour le laminage réversible d'une matière à laminer à chaud (B), avec au moins un four bobineur (3, 4) comprenant un cylindre enrouleur (5, 6) et un dispositif de commande et/ou de régulation (7) selon la revendication 9, le cylindre enrouleur (5, 6) et le dispositif de commande et/ou de régulation (7) étant reliés de manière fonctionnelle.
  11. Code de programme lisible sur machine pour dispositif de commande et/ou de régulation (7) pour un cylindre enrouleur (5, 6) d'un four bobineur (3, 4) d'un laminoir à chaud (1) fonctionnant de manière réversible, qui comprend des instructions de commande qui font exécuter par le dispositif de commande et/ou de régulation (7) le procédé selon l'une des revendications 1 à 8.
  12. Support d'enregistrement avec code de programme lisible sur machine selon la revendication 11.
EP10784742.8A 2009-12-17 2010-11-17 Procédé permettant de faire fonctionner un cylindre enrouleur d'un four bobineur pour un laminoir à chaud fonctionnant de manière réversible, dispositif de commande et/ou de régulation et laminoir à chaud fonctionnant de manière réversible Not-in-force EP2512700B1 (fr)

Priority Applications (1)

Application Number Priority Date Filing Date Title
EP10784742.8A EP2512700B1 (fr) 2009-12-17 2010-11-17 Procédé permettant de faire fonctionner un cylindre enrouleur d'un four bobineur pour un laminoir à chaud fonctionnant de manière réversible, dispositif de commande et/ou de régulation et laminoir à chaud fonctionnant de manière réversible

Applications Claiming Priority (3)

Application Number Priority Date Filing Date Title
EP09179723 2009-12-17
PCT/EP2010/067627 WO2011082875A1 (fr) 2009-12-17 2010-11-17 Procédé permettant de faire fonctionner un cylindre enrouleur d'un four bobineur pour un laminoir à chaud fonctionnant de manière réversible, dispositif de commande et/ou de régulation et laminoir à chaud fonctionnant de manière réversible
EP10784742.8A EP2512700B1 (fr) 2009-12-17 2010-11-17 Procédé permettant de faire fonctionner un cylindre enrouleur d'un four bobineur pour un laminoir à chaud fonctionnant de manière réversible, dispositif de commande et/ou de régulation et laminoir à chaud fonctionnant de manière réversible

Publications (2)

Publication Number Publication Date
EP2512700A1 EP2512700A1 (fr) 2012-10-24
EP2512700B1 true EP2512700B1 (fr) 2017-05-24

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Application Number Title Priority Date Filing Date
EP10784742.8A Not-in-force EP2512700B1 (fr) 2009-12-17 2010-11-17 Procédé permettant de faire fonctionner un cylindre enrouleur d'un four bobineur pour un laminoir à chaud fonctionnant de manière réversible, dispositif de commande et/ou de régulation et laminoir à chaud fonctionnant de manière réversible

Country Status (3)

Country Link
EP (1) EP2512700B1 (fr)
CN (1) CN102947018B (fr)
WO (1) WO2011082875A1 (fr)

Families Citing this family (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN103341525B (zh) * 2013-07-12 2016-09-07 鞍钢股份有限公司 一种降低连退线卷取硌印的操作方法

Family Cites Families (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4455848A (en) * 1982-09-13 1984-06-26 Tippins Machinery Company, Inc. Apparatus for underwinding strip on a drum in a hot reversing mill
JPS60240335A (ja) * 1984-05-12 1985-11-29 Nisshin Steel Co Ltd ステツケルミルにおけるフア−ネスコイラ−の起動方法
JPH069708B2 (ja) * 1987-12-25 1994-02-09 株式会社日立製作所 ステツケルミルの巻取り機制御方法および装置
WO1999024185A1 (fr) * 1997-11-07 1999-05-20 Siemens Aktiengesellschaft Dispositif et procede d'enroulement d'une bande de metal sortant d'un train de laminoir a chaud
JP2000271641A (ja) * 1999-03-25 2000-10-03 Kawasaki Steel Corp ストリップの巻取方法
CN100428098C (zh) * 2006-10-19 2008-10-22 山西太钢不锈钢股份有限公司 300系不锈钢卷取变张力控制技术

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Publication number Publication date
CN102947018B (zh) 2016-02-17
EP2512700A1 (fr) 2012-10-24
WO2011082875A1 (fr) 2011-07-14
CN102947018A (zh) 2013-02-27

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