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EP0995506A2 - Procédé de réglage de la tension pour une section de produit laminé - Google Patents

Procédé de réglage de la tension pour une section de produit laminé Download PDF

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Publication number
EP0995506A2
EP0995506A2 EP99119457A EP99119457A EP0995506A2 EP 0995506 A2 EP0995506 A2 EP 0995506A2 EP 99119457 A EP99119457 A EP 99119457A EP 99119457 A EP99119457 A EP 99119457A EP 0995506 A2 EP0995506 A2 EP 0995506A2
Authority
EP
European Patent Office
Prior art keywords
rolling stock
actual
deflection
rolling
target
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.)
Withdrawn
Application number
EP99119457A
Other languages
German (de)
English (en)
Other versions
EP0995506A3 (fr
Inventor
Otmar Dr. Palzer
Karl Keller
Karl-Heinz Balve
Miroslav Polok
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.)
SMS Siemag AG
Original Assignee
SMS Schloemann Siemag AG
SMS Demag AG
Schloemann Siemag 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 SMS Schloemann Siemag AG, SMS Demag AG, Schloemann Siemag AG filed Critical SMS Schloemann Siemag AG
Publication of EP0995506A2 publication Critical patent/EP0995506A2/fr
Publication of EP0995506A3 publication Critical patent/EP0995506A3/fr
Withdrawn legal-status Critical Current

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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
    • B21B37/48—Tension control; Compression control
    • B21B37/50—Tension control; Compression control by looper control

Definitions

  • the present invention relates to a tension control method for one between a front and a rear stand of a rolling mill Rolled material section of a rolled material.
  • the object of the present invention is a To create tension control procedures, by means of which even with small scaffolding distances and high rolling speeds a reliable tension control is possible.
  • the clamping element is connected to the by means of a hydraulic pressure cylinder Rolled section is employed, is a particularly simple way of recording the actual positioning force and the actual deflection possible. Because hydraulic pressure cylinders usually have a built-in or attached position transmitter, by means of whose travel of the printing cylinder is detectable. The actual hiring force results immediately from the working pressure of the pressure cylinder in connection with the Stamp cross section of the impression cylinder.
  • the tension control method is particularly easy to implement if one of the two Actual sizes are kept constant equal to the corresponding target size and only the other actual size is variable. Alternatively, the actual contact force or the Actual deflection can be kept constant.
  • the hydraulic pressure cylinder comes from an operating pressure Pressurizing device with a working pressure the operating pressure is at least a minimum pressure and the working pressure is less than the minimum pressure, the actual setting force is kept constant particularly easy to implement.
  • a rolling stock 1 is rolled in a multi-stand rolling mill.
  • the Rolling mill has at least a front roll stand 2 and a rear roll stand 3 on.
  • a holding element 4 is arranged upstream of the front roll stand 2.
  • the holding element 4 is also designed as a roll stand. But it could also be used as a driver or as another holding device be trained.
  • a rolling stock section 5 of the rolling stock is located between the roll stands 2, 3 1.
  • the rolling stock section 5 there is a train Z.
  • the train Z in the Rolled material section 5 is set by means of the roll stands 2, 3.
  • the holding element 4 and the rear roll stand 3 designed as vertical stands, while the front roll stand 2 as a horizontal stand is trained.
  • the rolling mill is therefore a rolling mill for lean Rolled stock 1, e.g. B. steel bars or wire.
  • the train control procedure but can also be used in a rolling mill for strip-shaped rolling stock 1.
  • a clamping element 6 is arranged between the roll stands 2, 3.
  • the clamping element 6 is designed as a role in the present case. It is by means of a Adjusting element 7 is employed with an actual setting force F on the rolling stock section 5. As a result, the rolling stock section 5 is dashed from it by an actual deflection z illustrated ideal line deflected. To ensure that the To ensure rolling stock 1 in the roll stands 2, 3 are between the clamping element 6 and the roll stands 2, 3 counter rollers 8, 9 arranged.
  • the adjusting element 7 is a hydraulic pressure cylinder educated.
  • the pressure cylinder 7 is a position sensor assigned. The actual deflection z is thus from the directly ascertainable travel path of the pressure cylinder 7 can be determined.
  • the pressure cylinder 7 is subjected to a working pressure p from a pressurization device 10.
  • the pressurization device 10 is at an operating pressure p 0 .
  • the operating pressure p 0 is variable, but has at least a minimum pressure p min .
  • the working pressure p is set by means of a pressure reducing valve 11 which is arranged between the pressurizing device 10 and the adjusting element 7.
  • the working pressure p is preferably less than the minimum pressure p min .
  • the pressure cylinder has a stamp surface A.
  • the actual setting force F results as the product of the - easily detectable - working pressure p and the stamp area A of Printing cylinder 7.
  • the actual setting force F is adjusted accordingly of the working pressure p by means of the pressure reducing valve 11 is constantly the same a target pitch force F * held. Thus, only the actual deflection varies z.
  • the actual deflection z - and for safety's sake also the actual setting force F - detected by corresponding sensors 12, 13 and fed to an evaluation unit 14.
  • the evaluation unit 14 compares the actual deflection z with a target deflection z *. If the actual deflection z is greater than the target deflection z *, the train Z prevailing in the rolling stock section 5 is too low. The train Z is in this Case increased by appropriate control of the roll stands 2 and / or 3 so that the actual deflection z approaches the target deflection z *. If vice versa the actual deflection z is smaller than the target deflection z *, the train Z decreased.
  • the train Z prevailing in the rolling stock section 5 are influenced as little as possible.
  • the target setting force F * is therefore so low chosen as possible.
  • the target setting force F * is selected such that that the target deflection z * caused by the target positioning force F * differs from zero is.
  • the actual setting force F is constantly equal to the target setting force F * held so that only the actual deflection z is variable. But it is vice versa, the actual deflection z is constantly the same as the target deflection to keep z * so that only the actual setting force F is variable.
  • Position controls are generally known in printing cylinders 7. It would be too possible to have both sizes F, z vary. In this case, however, would be Control algorithm more complicated.
  • the rolling stock 1 has a rolling end 15.
  • the following procedure is used: According to FIG. 2, the end of rolled material 15 runs out of the holding element 4 at a time T1. From this point in time, a drive torque M applied by the rear roll stand 3, hereinafter referred to as the moment M k , is recorded several times and an average of the detected moments M k is formed. This moment detection and averaging is ended before the end of the rolled material 15 runs out of the front roll stand 2 at a time T 2.
  • a drive torque M hereinafter referred to as free torque M F
  • free torque M F applied by the rear roll stand 3
  • an average value is formed from the detected free moments M F.
  • the detection of the free torque M F and the associated averaging must have ended before a time T3 at which the end of the rolling stock 15 runs out of the rear roll stand 3.
  • the train Z is then determined which actually prevailed in the rolling stock section 5 before the rolling stock end 15 runs out of the front roll stand 2.
  • the correction values can then be determined from the train Z actually prevailing.
  • the times T1, T2 and T3 can be determined, for example, on the basis of the times to which of the holding element 4, the front roll stand 2 and the moments M applied to the rear roll stand 3 drop to zero.
  • the tension control method according to the invention is particularly also at a small distance d of z. B. only one to two meters between the roll stands 2, 3 applicable, although the rolling stock 1 in the rolling stock section 5 can have a rolling speed v of 15 to 20 m / s, in individual cases even more.
  • the investment costs are also lower than the investment costs for a loop control.
  • the tension control method according to the invention can be used both on roughing lines for slim rolling stock and on intermediate and finishing lines. It can also be retrofitted to existing rolling mills with little effort.

Landscapes

  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Control Of Metal Rolling (AREA)
EP99119457A 1998-10-24 1999-09-30 Procédé de réglage de la tension pour une section de produit laminé Withdrawn EP0995506A3 (fr)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE19849068A DE19849068B4 (de) 1998-10-24 1998-10-24 Zugregelverfahren für einen Walzgutabschnitt
DE19849068 1998-10-24

Publications (2)

Publication Number Publication Date
EP0995506A2 true EP0995506A2 (fr) 2000-04-26
EP0995506A3 EP0995506A3 (fr) 2003-08-27

Family

ID=7885509

Family Applications (1)

Application Number Title Priority Date Filing Date
EP99119457A Withdrawn EP0995506A3 (fr) 1998-10-24 1999-09-30 Procédé de réglage de la tension pour une section de produit laminé

Country Status (3)

Country Link
US (1) US6199417B1 (fr)
EP (1) EP0995506A3 (fr)
DE (1) DE19849068B4 (fr)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN102451837A (zh) * 2010-10-27 2012-05-16 株式会社日立制作所 被轧材张力控制装置、被轧材张力控制方法及热连轧机

Families Citing this family (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE10007364A1 (de) * 1999-06-10 2001-03-01 Sms Demag Ag Verfahren zur Zugregelung zwischen den Walzgerüsten von Walzenstraßen für Stabstahl, Draht oder Profile
RU2189876C2 (ru) * 2000-09-05 2002-09-27 Открытое акционерное общество "Северсталь" Способ непрерывной холодной прокатки полосы с натяжением
DE102005036184A1 (de) * 2004-12-07 2006-06-08 Sms Meer Gmbh Verfahren zur Regelung des Querschnitts von aus einer Drahtwalzstraße austretenden Drähten und Drahtwalzstraße
RU2492945C1 (ru) * 2012-07-24 2013-09-20 Александр Иванович Трайно Способ производства листовой низкоуглеродистой стали
CN105772512B (zh) * 2014-12-23 2018-04-27 宝山钢铁股份有限公司 变厚度板成卷轧制时张力稳定方法

Family Cites Families (10)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2569264A (en) 1948-06-08 1951-09-25 United Eng Foundry Co Strip tensioning apparatus
DE1427893A1 (de) * 1965-03-09 1968-11-21 Gen Dynamics Corp Automatisches Zugspannungsreglersystem
US3961510A (en) * 1975-07-11 1976-06-08 Wean United, Inc. Tension device for a rolling mill and the like
JPS6024726B2 (ja) * 1977-03-31 1985-06-14 株式会社日立製作所 圧延機の張力制御方法
JPS53134757A (en) * 1977-04-28 1978-11-24 Toshiba Corp Apparatus for controlling rolling mill
JPS5420942A (en) * 1977-07-18 1979-02-16 Kobe Steel Ltd Controlling method for tension in tandem rolling mill
US4674310A (en) * 1986-01-14 1987-06-23 Wean United Rolling Mills, Inc. Strip tension profile apparatus and associated method
JP3286057B2 (ja) * 1994-01-19 2002-05-27 新日本製鐵株式会社 連続熱間圧延機の制御装置
US5546779A (en) * 1994-03-24 1996-08-20 Danieli United, Inc. Interstand strip gauge and profile conrol
US5809817A (en) * 1997-03-11 1998-09-22 Danieli United, A Division Of Danieli Corporation Corporation Optimum strip tension control system for rolling mills

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN102451837A (zh) * 2010-10-27 2012-05-16 株式会社日立制作所 被轧材张力控制装置、被轧材张力控制方法及热连轧机
CN102451837B (zh) * 2010-10-27 2014-07-16 株式会社日立制作所 被轧材张力控制装置、被轧材张力控制方法及热连轧机

Also Published As

Publication number Publication date
US6199417B1 (en) 2001-03-13
EP0995506A3 (fr) 2003-08-27
DE19849068B4 (de) 2005-03-03
DE19849068A1 (de) 2000-05-11

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