EP2094411B1 - Procédé de laminage pour une bande - Google Patents

Procédé de laminage pour une bande Download PDF

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Publication number
EP2094411B1
EP2094411B1 EP07821561A EP07821561A EP2094411B1 EP 2094411 B1 EP2094411 B1 EP 2094411B1 EP 07821561 A EP07821561 A EP 07821561A EP 07821561 A EP07821561 A EP 07821561A EP 2094411 B1 EP2094411 B1 EP 2094411B1
Authority
EP
European Patent Office
Prior art keywords
rolling
strip
force
stand
rolls
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
EP07821561A
Other languages
German (de)
English (en)
Other versions
EP2094411A1 (fr
Inventor
Wolfgang Hofer
Markus Martini
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 PL07821561T priority Critical patent/PL2094411T3/pl
Publication of EP2094411A1 publication Critical patent/EP2094411A1/fr
Application granted granted Critical
Publication of EP2094411B1 publication Critical patent/EP2094411B1/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
    • B21B37/00—Control devices or methods specially adapted for metal-rolling mills or the work produced thereby
    • B21B37/68—Camber or steering control for strip, sheets or plates, e.g. preventing meandering
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B21—MECHANICAL METAL-WORKING WITHOUT ESSENTIALLY REMOVING MATERIAL; PUNCHING METAL
    • B21B—ROLLING OF METAL
    • B21B2269/00—Roll bending or shifting
    • B21B2269/02—Roll bending; vertical bending of rolls
    • B21B2269/04—Work roll bending
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B21—MECHANICAL METAL-WORKING WITHOUT ESSENTIALLY REMOVING MATERIAL; PUNCHING METAL
    • B21B—ROLLING OF METAL
    • B21B2273/00—Path parameters
    • B21B2273/12—End of product
    • B21B2273/16—Tail or rear end
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B21—MECHANICAL METAL-WORKING WITHOUT ESSENTIALLY REMOVING MATERIAL; PUNCHING METAL
    • B21B—ROLLING OF METAL
    • B21B2273/00—Path parameters
    • B21B2273/18—Presence of product
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B21—MECHANICAL METAL-WORKING WITHOUT ESSENTIALLY REMOVING MATERIAL; PUNCHING METAL
    • B21B—ROLLING OF METAL
    • B21B2273/00—Path parameters
    • B21B2273/20—Track of product
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B21—MECHANICAL METAL-WORKING WITHOUT ESSENTIALLY REMOVING MATERIAL; PUNCHING METAL
    • B21B—ROLLING OF METAL
    • B21B31/00—Rolling stand structures; Mounting, adjusting, or interchanging rolls, roll mountings, or stand frames
    • B21B31/16—Adjusting or positioning rolls
    • B21B31/20—Adjusting or positioning rolls by moving rolls perpendicularly to roll axis
    • B21B31/203—Balancing rolls
    • 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
    • B21B37/28—Control of flatness or profile during rolling of strip, sheets or plates
    • B21B37/38—Control of flatness or profile during rolling of strip, sheets or plates using roll bending
    • 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

Definitions

  • the present invention relates to a rolling process for a belt comprising a belt head and a belt foot, wherein the belt, starting with the belt head, is rolled in a roll stand of a rolling device between an upper and a lower roll arrangement of the roll stand.
  • the present invention further relates to a computer program comprising machine code, the execution of which by a control device for a rolling stand causes the rolling mill to be operated according to such a rolling method.
  • the present invention relates to a data carrier on which such a computer program is stored.
  • the present invention also relates to a control device for a rolling mill, in which such a computer program is stored, wherein the computer program is executable by the control device.
  • the present invention relates to a rolling device for rolling a strip, which has at least one rolling stand with an upper and a lower roll arrangement and an adjusting device for applying a bending force to the roll arrangements, wherein the rolling stand is controlled by means of a control device of the type described above.
  • rolling mill control means are software programmed, and any conventional rolling means is as described above.
  • the lateral breaking of the tape in the horizontal direction can be caused by various physical dependencies.
  • Examples of such dependencies are an unbalanced tension over the bandwidth, a wedge-shaped band cross-section, a skew of the work rolls, an asymmetrical work roll shape, etc.
  • segmented tension measuring rollers are arranged in front of or behind the rolling stand, that is to say looper, by means of which the tension over the belt width can be detected.
  • the detected tensile stresses can serve as the basis of a control in this case, which counteracts the lateral breaking of the tape.
  • segmented tension measuring rollers are very expensive.
  • the effectiveness of this measure is empirically unfounded.
  • a rolling method of the type mentioned is known in which it is monitored whether the band foot reaches a switching point seen in the rolling direction before the rolling stand, and the roller assemblies from the time at which the band foot reaches the switching point (switching time) by means of an adjusting device a bending force spreading the roller assemblies is applied, which is as large as a Balancierkraft the upper roller assembly.
  • the balancing force of the upper roller assembly is the weight that must be compensated to balance the upper roller assembly, thus preventing the upper roller assembly from sinking onto the lower roller assembly.
  • the object of the present invention is to provide a rolling process and the objects corresponding thereto (computer program, data carrier, control device, rolling device), by means of which a lateral breaking of the belt can be optimally counteracted; without negatively affecting the rolling process.
  • the object is procedurally achieved in that the roller assembly is acted upon from the switching time with a roll force spreading the roll assembly, which is at least as large as a minimum force.
  • the minimum force is at least as large as the Balancierkraft the upper roller assembly. It is according to the invention in dependence determined by parameters of the belt and / or operating parameters of the rolling device.
  • the object is achieved programmatically by a computer program comprising machine code, the execution of which by a control device for a rolling stand causes the rolling stand to be operated according to such a rolling method.
  • the object is further achieved by a data carrier on which such a computer program is stored in machine-readable form.
  • control device for a rolling stand in which such a computer program is stored, which can be executed by the control device.
  • the strip is clamped between the mill stand and a roll-up upstream retention element.
  • the retaining element may in turn also be a rolling stand.
  • the switching point is seen in the rolling direction in front of the rolling stand.
  • the switching point can be seen in the rolling direction between the rolling stand and the retaining element or lie in front of the retaining element.
  • the changeover point is fixed.
  • the changeover point is determined as a function of parameters of the belt and / or operating parameters of the rolling device.
  • the adjusting device generally has a drive-side and an operating-side partial adjustment device.
  • a rolling device has at least one rolling stand 1.
  • the rolling stand 1 has an upper roller arrangement 2 and a lower roller assembly 3. Between the roller assemblies 2, 3, a band 4 is rolled.
  • the rolling stand 1 also has an adjusting device 5.
  • the adjusting device 5 acts on work rolls of the roller assemblies 2, 3.
  • the roller assemblies 2, 3 are acted upon by a bending force F.
  • the adjusting device 5 spreads the roller assemblies 2, 3 or compresses them together.
  • the rolling device furthermore has a control device 6.
  • the control device 6 is used to control the roll stand 1.
  • the control device 6 is supplied to a computer program 7, which is stored in a data carrier 8 of the control device 6.
  • the data carrier 8 of the control device 6 corresponds to a data carrier in the sense of the present invention.
  • the computer program 7 comprises machine code 9, which can be executed by the control device 6.
  • the controller 6 executes the computer program 7, it operates the rolling stand 1 according to a rolling method which will be described below in connection with FIG FIG. 3 is explained in more detail.
  • the control device 6 first determines the value of a first logical variable START in a step S1.
  • the first logical variable START assumes the value "TRUE” if and only if a tape head 10 of the tape 4 has reached the rolling stand 1.
  • step S2 the control device 6 checks the value of the first logical variable START. Depending on the result of the check, the control device 6 returns to step S1 or proceeds to a step S3.
  • step S3 the control device 6 controls the rolling stand 1 in such a way that the rolling stand 1 rolls the strip 4.
  • the control of the roll stand 1 by the control device 6 causes, in particular, that a roll gap s is set and the strip 4 is acted upon by a rolling force FW.
  • the value of the bending force F is determined by the control device 6 in accordance with the technological requirements of the rolling process. The value may be larger or smaller than a minimum force Fmin and also larger or smaller than the balancing force of the upper roller assembly 2. It can also be negative (ie, the roller assemblies 2, 3 are compressed).
  • a step S4 the controller 6 determines the minimum force Fmin.
  • the determination of the minimum force Fmin takes place as a function of parameters of the belt 4 and / or operating parameters of the rolling device.
  • parameters of the belt 4 are its material properties, their dimensions and their temperature.
  • operating parameters of the rolling device are a rolling speed v, a picking, a train Z (possibly as a function of the bandwidth b), etc.
  • the minimum force Fmin is determined in step S4 such that it is at least as large as the balancing force of the upper roller assembly is.
  • a step S5 the control device 6 determines the value of a second logical variable SHIFT.
  • the second logical variable SHIFT assumes the value "TRUE" if and only if a tape foot 11 of the tape 4 has reached or has passed a changeover point 12.
  • the band 4 is usually clamped between the roll stand 1 and a viewed in the rolling direction x upstream retaining element 13.
  • the retaining element 13 may in particular itself be a rolling stand.
  • the changeover point 12 can - see again FIG. 1 - Seen in the rolling direction x between the roll stand 1 and the retaining element 13.
  • the switching point 12 seen in the rolling direction x is located in front of the retaining element 13. Exemplary for each of these two cases in FIG. 1 a possible switching point 12 shown in dashed lines.
  • step S6 the control device 6 checks the value of the second logical variable SHIFT. Depending on the result of the check, the control device 6 returns to step S3 or to step S7.
  • step S7 the control device 6 checks whether the bending force F determined in step S3 is greater than the minimum force Fmin. If this is not the case, the control device 6 raises the bending force F to the minimum force Fmin in a step S8. Otherwise, no action needs to be taken. In this case, the bending force F can be maintained.
  • the control device 6 determines the value of a third logical variable ENDE.
  • the third logical variable ENDE assumes the value "TRUE" if and only if the belt foot 11 reaches the rolling stand 1.
  • step S10 the control device 6 checks the value of the third logical variable ENDE. Depending on the result of the check, the control device 6 proceeds to a step S11 or terminates the further procedure.
  • step S11 The content of the step S11 essentially corresponds to the step S3. In contrast to step S3, however, the bending force F is no longer determined in step S11, but only maintained. From step S11, the controller 6 returns to step S9.
  • the bending force F is raised to the minimum force Fmin only when the bending force F is smaller than the minimum force Fmin. Otherwise, the bending force F is maintained.
  • the procedure of FIG. 3 is preferable, however.
  • FIG. 3 shows combined together. They are, however, independent of each other. They are therefore individually feasible.
  • step S12 the control device 6 determines the changeover point 12.
  • the determination of the changeover point 12 takes place in the context of step S12 as a function of parameters of the belt 4 and / or operating parameters of the rolling device.
  • the parameters of the belt 4 and the operating parameters of the rolling means may be the same as those mentioned above in connection with the determination of the minimum force Fmin.
  • Step S12 implements the first variant of the procedure of FIG. 3 ,
  • Step S12 precedes Step S4.
  • Step S4 it could also be arranged downstream of step S4.
  • step S9 is preceded by a step S13.
  • the control device 6 detects a functional profile of parameters of the belt 4 and / or operating parameters of the rolling device transverse to the rolling direction x.
  • a functional profile of parameters of the belt 4 and / or operating parameters of the rolling device transverse to the rolling direction x As a function of the detected functional profile-in particular as a function of the tensile stress Z and the rolling force FW-the control device 6 determines a differential force ⁇ F in the context of step S14.
  • a division of the bending force F on the drive-side and the operating-side partial adjusting device 14, 15 is thus determined as part of the step S13.

Landscapes

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

Claims (11)

  1. Procédé de laminage d'une bande ( 4 ), qui a une tête ( 10 ) de bande et un pied ( 11 ) de bande,
    - dans lequel on lamine la bande ( 4 ) en commençant par la tête ( 10 ) de bande dans une cage ( 1 ) de laminoir d'un équipement de laminage entre un dispositif ( 2 ) supérieur de laminage et un dispositif ( 3 ) inférieur de laminage de la cage de laminoir,
    - dans lequel on contrôle si le pied ( 11 ) de la bande atteint, considéré dans le sens ( x ) de laminage, un point ( 12 ) de commutation se trouvant avant la cage ( 1 ) de laminoir,
    - dans lequel on applique aux dispositifs ( 2, 3 ) de laminage, à partir de l'instant où le pied ( 11 ) de la bande atteint le point ( 12 ) de commutation, l'instant de commutation, au moyen d'un dispositif ( 5 ) de réglage une force ( F ) de cintrage, qui écarte les dispositifs ( 2, 3 ) de laminage et qui est au moins aussi grande qu'une force ( Fmin ) minimum,
    - dans lequel la force ( Fmin ) minimum est au moins aussi grande qu'une force d'équilibrage du dispositif ( 2 ) supérieur de laminage,
    caractérisé
    en ce que l'on détermine la force ( Fmin ) minimum en fonction de paramètres de la bande ( 4 ) et/ou de paramètres de fonctionnement de l'équipement de laminage.
  2. Procédé de laminage suivant la revendication 1,
    caractérisé
    en ce qu'on serre la bande ( 4 ) entre la cage ( 1 ) de laminoir et un élément ( 13 ) de retenue mis en amont, considéré dans le sens ( x ) de laminage.
  3. Procédé de laminage suivant la revendication 2,
    caractérisé
    en ce que le point ( 12 ) de commutation est, considéré dans le sens ( x ) de laminage, disposé entre la cage ( 1 ) de laminoir et l'élément ( 13 ) de retenue.
  4. Procédé de laminage suivant la revendication 2,
    caractérisé
    en ce que le point ( 12 ) de commutation est, considéré dans le sens ( x ) de laminage, avant l'élément ( 13 ) de retenue.
  5. Procédé de laminage suivant l'une des revendications précédentes,
    caractérisé
    en ce que l'on contrôle si les dispositifs ( 2, 3 ) de laminage ont, à l'instant de commutation, été déjà soumis, au moyen du dispositif ( 5 ) de réglage, à une force ( F ) de cintrage, qui écarte les dispositifs ( 2, 3 ) de laminage et qui est au moins aussi grande que la force ( Fmin ) minimum et en ce que, dans l'affirmative, on maintient cette force ( F ) de cintrage et, dans la négative, on augmente la force ( F ) de cintrage jusqu'à la force ( Fmin ) minimum.
  6. Procédé de laminage suivant l'une des revendications précédentes,
    caractérisé
    en ce que l'on détermine le point ( 12 ) de commutation en fonction de paramètres de la bande ( 4 ) et/ou de paramètres de fonctionnement de l'équipement de laminage.
  7. Procédé de laminage suivant l'une des revendications précédentes,
    caractérisé
    en ce que le dispositif ( 5 ) de réglage comporte un dispositif ( 14 ) de réglage partiel du côté de l'entraînement et un dispositif ( 15 ) de réglage partiel du côté de commande, en ce que, pendant le laminage de la bande ( 4 ), on relève une variation fonctionnelle de paramètres de la bande ( 4 ) et/ou de paramètres de fonctionnement de l'équipement de laminage, transversalement au sens ( x ) de laminage et en ce que, en fonction de la variation fonctionnelle relevée, on détermine une répartition de la force ( F ) de cintrage entre le dispositif ( 14 ) de réglage partiel du côté de l'entraînement et le dispositif ( 15 ) de réglage partiel du côté de commande.
  8. Programme informatique, qui comprend des codes (9) de machine, dont l'exécution par un dispositif ( 6 ) de commande d'une cage ( 1 ) de laminoir fait que la cage ( 1 ) de laminoir fonctionne suivant un procédé de laminage suivant l'une des revendications précédentes.
  9. Support de données, sur lequel un programme ( 7 ) informatique suivant la revendication 8 est mémorisé sous une forme qui peut être lu par une machine.
  10. Dispositif de commande d'une cage ( 1 ) de laminoir, dans lequel un programme ( 7 ) informatique suivant la revendication 8 est mémorisé, programme qui peut être exécuté par le dispositif de commande.
  11. Equipement de laminage pour le laminage d'une bande ( 4 ), qui a au moins une cage ( 1 ) de laminoir ayant un dispositif ( 2 ) de laminage supérieur et un dispositif ( 3 ) de laminage inférieur ainsi qu'un dispositif ( 5 ) de réglage, pour soumettre les dispositifs ( 2, 3 ) de laminage à une force ( F ) de cintrage, la cage ( 1 ) de laminoir étant commandée au moyen d'un dispositif ( 6 ) de commande suivant la revendication 10.
EP07821561A 2006-12-18 2007-10-19 Procédé de laminage pour une bande Not-in-force EP2094411B1 (fr)

Priority Applications (1)

Application Number Priority Date Filing Date Title
PL07821561T PL2094411T3 (pl) 2006-12-18 2007-10-19 Sposób walcowania taśmy

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE102006059709A DE102006059709A1 (de) 2006-12-18 2006-12-18 Walzverfahren für ein Band
PCT/EP2007/061197 WO2008074539A1 (fr) 2006-12-18 2007-10-19 Procédé de laminage pour une bande

Publications (2)

Publication Number Publication Date
EP2094411A1 EP2094411A1 (fr) 2009-09-02
EP2094411B1 true EP2094411B1 (fr) 2011-07-20

Family

ID=38777692

Family Applications (1)

Application Number Title Priority Date Filing Date
EP07821561A Not-in-force EP2094411B1 (fr) 2006-12-18 2007-10-19 Procédé de laminage pour une bande

Country Status (11)

Country Link
US (1) US8459074B2 (fr)
EP (1) EP2094411B1 (fr)
CN (1) CN101563174B (fr)
AT (1) ATE516898T1 (fr)
BR (1) BRPI0720430A8 (fr)
CA (1) CA2672789A1 (fr)
DE (1) DE102006059709A1 (fr)
PL (1) PL2094411T3 (fr)
RU (1) RU2469808C2 (fr)
UA (1) UA97261C2 (fr)
WO (1) WO2008074539A1 (fr)

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DE102008007247A1 (de) * 2007-09-13 2009-03-19 Siemens Aktiengesellschaft Betriebsverfahren für eine Walzstraße mit Krümmungserkennung
DE102009039501A1 (de) * 2009-08-31 2011-03-03 Sms Siemag Ag Verfahren zur Einstellung der Walzen eines Walzgerüsts und Walzgerüst
DE102014215396A1 (de) 2014-08-05 2016-02-11 Primetals Technologies Germany Gmbh Differenzzugregelung mit optimierter Reglerauslegung
CN107671126B (zh) * 2017-09-08 2018-12-11 张家港浦项不锈钢有限公司 炉卷轧机上、下工作辊的水平控制方法
JP6904314B2 (ja) * 2018-07-17 2021-07-14 東芝三菱電機産業システム株式会社 熱間圧延ラインのウェッジ制御装置
CN108994091B (zh) * 2018-07-19 2019-10-01 本钢板材股份有限公司 一种冷轧机闭缝印的标定方法
CN112893475A (zh) * 2021-01-11 2021-06-04 山西太钢不锈钢股份有限公司 板坯扣翘头的控制方法
EP4029618A1 (fr) * 2021-01-18 2022-07-20 Primetals Technologies Germany GmbH Laminage à minimisation de la baisse de la force de flexion lors de la passe

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Also Published As

Publication number Publication date
US8459074B2 (en) 2013-06-11
BRPI0720430A2 (pt) 2013-12-31
DE102006059709A1 (de) 2008-06-19
PL2094411T3 (pl) 2011-12-30
BRPI0720430A8 (pt) 2016-10-18
US20100031723A1 (en) 2010-02-11
WO2008074539A1 (fr) 2008-06-26
CA2672789A1 (fr) 2008-06-26
RU2009127738A (ru) 2011-01-27
ATE516898T1 (de) 2011-08-15
UA97261C2 (ru) 2012-01-25
EP2094411A1 (fr) 2009-09-02
RU2469808C2 (ru) 2012-12-20
CN101563174A (zh) 2009-10-21
CN101563174B (zh) 2015-04-22

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