EP1074317B1 - Verfahren zum flexiblen Walzen eines Metallbandes - Google Patents

Verfahren zum flexiblen Walzen eines Metallbandes Download PDF

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Publication number
EP1074317B1
EP1074317B1 EP00115953A EP00115953A EP1074317B1 EP 1074317 B1 EP1074317 B1 EP 1074317B1 EP 00115953 A EP00115953 A EP 00115953A EP 00115953 A EP00115953 A EP 00115953A EP 1074317 B1 EP1074317 B1 EP 1074317B1
Authority
EP
European Patent Office
Prior art keywords
roll
rolling
roll gap
planeness
strip
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.)
Expired - Lifetime
Application number
EP00115953A
Other languages
German (de)
English (en)
French (fr)
Other versions
EP1074317A2 (de
EP1074317A3 (de
Inventor
Andreas Dr.-Ing. Hauger
Rainer Prof. Dr.-Ing. Kopp
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.)
Muhr und Bender KG
Original Assignee
Muhr und Bender KG
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
Priority claimed from DE19939166A external-priority patent/DE19939166B4/de
Application filed by Muhr und Bender KG filed Critical Muhr und Bender KG
Publication of EP1074317A2 publication Critical patent/EP1074317A2/de
Publication of EP1074317A3 publication Critical patent/EP1074317A3/de
Application granted granted Critical
Publication of EP1074317B1 publication Critical patent/EP1074317B1/de
Anticipated expiration legal-status Critical
Expired - Lifetime 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
    • B21B37/28—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
    • 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
    • B21B37/24—Automatic variation of thickness according to a predetermined programme
    • B21B37/26—Automatic variation of thickness according to a predetermined programme for obtaining one strip having successive lengths of different constant thickness
    • 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
    • B21B38/02—Methods or devices for measuring, detecting or monitoring specially adapted for metal-rolling mills, e.g. position detection, inspection of the product for measuring flatness or profile of strips

Definitions

  • the invention relates to, according to the preamble of claim 1, a method for flexible rolling of a metal strip, wherein the metal strip during the rolling process by one between two work rolls led formed nip and targeted the nip during the rolling process is moved to over the length of the metal strip different strip thicknesses (see, for example, JP (A) 61172603).
  • the flexible rolling as a process for the production of flat metal strips with over Their length defines different tape thicknesses is already known from practice.
  • the flexible rolling is characterized in that during the rolling process of Rolling gap is deliberately moved.
  • the goal of flexible rolling is to Produce rolled products with load and weight optimized cross-sectional shapes.
  • the process is usually designed as coil-to-coil strip rolling.
  • the applied over the reel strip tension supports the rolling process and significantly improves the straightness of the finished strip profile in the longitudinal direction, ie in Roll direction.
  • a measure, the deviation from the ideal gap - caused by the deflection Rolling - to correct, consists in crowning the roll bale. This includes is understood the barrel-shaped or bulbous execution of the roll barrel. With this type of correction, it is possible to use only the work rolls, only the back-up rolls or to bump both the work rolls and the backup rolls. The bowing should be the deflection, which by the rolling forces and the own weight of the rollers is compensated, so that the gap between the Rolls again evenly, d. H. is constant over the length of the rolls. In However, the correction of the bending line is usually not complete and is, since the Roll form or the crowning is not changeable, only for a certain Operating case.
  • the flatness is an essential requirement for a metal strip. She is important to ensure the same ratios of band center to band edge for further processing to be able to. With nonplanar bands, it can cause unwanted effects when coiling come. This manifests itself in frictional stress peaks at the contact surfaces in the reeled coil either in the middle of the tape or at the edge of the tape depending on the band profile. This can vary depending on the wrap angle and the friction conditions occurring to gluing theticiancoilten Bandes lead, in particular, if following the rolling an annealing is carried out.
  • both the strip thickness and the Planarity set constant, monitored via complex control loops and when occurring Deviations regulated by corresponding actuators.
  • a control device for compensating the rolling force induced rolling deflection in conventional Strip rolling process is known for example from DE 22 64 333 C3.
  • Object of the present invention is to provide a method for flexible rolling a To provide metal strip available in which a good flatness can be achieved can, even with relatively wide bands.
  • the previously derived and described object is in a method of the beginning described type according to the invention essentially solved in that during each setting of the roll gap or immediately thereafter the bending lines of the work rolls depending on the set roll gap to achieve a flatness controlled by the metal strip.
  • Essential in the invention is therefore that the Influencing the bending lines of the work rolls when setting the roll gap - at least initially - not via a regulation, but via a controller, So a process in which a size - in this case, the bending lines of the work rolls - of a different size - in this case the nip - in a given, fixed relationship is affected.
  • the compensation of the bending line change due to the load changes in a roll gap change takes place by knowing the Biegelinienjokeit of the respective roll nips. If, for example, the roll gap is adjusted from S 1 to S 2 in a particular rolling stock, this adjustment of the roll gap leads to a change in the deflection of the work rolls.
  • This bendline change is known and forms the basis of the controlled compensation. The knowledge of the bending line change can follow from the given geometry, but can in particular be obtained empirically, namely the fact that corresponding measured variables are returned during the rolling process.
  • the bending line becomes directly dependent on the respective roll nips by application, d. H. Increase or decrease of certain rebound forces adapted to obtain a uniform gap over the length of the roll gap.
  • the optical measurement of the flatness can be directly behind the work rolls realize in a simple way.
  • the planarity of the metal strip becomes preferably over the entire width of the metal strip behind the nip for each Length increment measured.
  • the Measurement of the flatness over the entire width of the metal strip distributed Laserdickenmeßstationen are provided and that the laser thickness measurement via triangulation he follows.
  • the laser thickness measurement over the entire width of the metal strip allows in a simple way online optimization of the bending line of the work rolls.
  • the laser thickness measurement via triangulation made possible by the small measurement spot and the high measuring frequencies of 1 kHz and more even with short tape sections of about 50 mm in length determining the cross profile.
  • FIGS. 1 and 2 a part of a roll stand 1 on the one hand without counterbending (FIG. 1) and on the other hand with counter-bending (FIG. 2).
  • a cylindrical work roll 2 with roll barrel 3 and bearing pins 4, 5, the are stored in bearings 6, 7.
  • a Back-up roll 8 with a cylindrical support roll bale 9 and bearing journals 10, 11, which are stored in bearings 12, 13.
  • the upper rolls of the roll stand 1 are not shown.
  • the two lower corresponding rollers namely a lower work roll and a lower back-up roll. Located between the two work rolls the nip S.
  • Fig. 1 an application case when rolling a metal strip, not shown, is shown, wherein on the work roll 2, a rolling force F W is exercised.
  • the rolling force F W causes an elastic deflection of the work roll 2, so that the bending line B of the work roll 2 results.
  • the rolling force F W not only leads to a deflection of the work roll 2, but also to a deflection of the support roller 8, but this is not shown in detail.
  • Fig. 2 the state of the rollers 2, 8 is shown with a counter-bend.
  • the rolling gap S in contrast to the state shown in Fig. 1, a constant, uniform gap, so at least substantially constant constant distance between the two facing surfaces of the work rolls.
  • the work roll 2 In the state shown in Fig. 2, the work roll 2 is not bent.
  • the rolling force F W counteract against the back-up roller 8 applied bending forces F B.
  • the bending line B that of the central axis runs the work roll 2 corresponds, parallel to the outside of the work roll 2.
  • this is not the case. In this case is at a over the length of the work roll constant nip in contrast to the representation 2, the work roll bent, although the limiting the nip Line or surface of the work roll is horizontal.
  • the inventive method for flexible rolling of a metal strip runs Now so from that the roll gap S is selectively moved during the rolling process, to achieve a predetermined change in thickness of the metal strip over its length. It is essential, first, that during setting of the roll gap S or Immediately thereafter, the bending lines B of the work rolls 2 depending on the set Rolling gap to achieve a flatness of the metal strip can be controlled. This is by knowing the bend line dependence of the different ones Roll nips possible. As a result, the due to the different roll gaps caused deviation from the ideal gap compensated.
  • predetermined back bending forces F B are applied to the back-up rolls 8 in response to the various roll nips to achieve a working and back-up roll bend.
  • bending forces F B are applied to the work rolls 2 to control the unevenness.
  • a measured value acquisition is initially made via appropriate measuring means. Both the longitudinal and the transverse profile are measured. Subsequently, the longitudinal profile or cross profile recognition, whereby the control deviation between the actual and setpoint of the respective controlled variable is determined. The respective correction values are then fed to a control loop.
  • the change ⁇ h of the thickness of the metal strip is corrected to the predetermined target value according to the predetermined setpoint. For this purpose, a corresponding change ⁇ S of the roll gap is required. Of the change in the roll gap S, in turn, in turn depend on the respective work rolls 2 applied bending-back forces F B.

Landscapes

  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Control Of Metal Rolling (AREA)
  • Metal Rolling (AREA)
  • Continuous Casting (AREA)
  • Length Measuring Devices With Unspecified Measuring Means (AREA)
EP00115953A 1999-08-06 2000-07-26 Verfahren zum flexiblen Walzen eines Metallbandes Expired - Lifetime EP1074317B1 (de)

Applications Claiming Priority (4)

Application Number Priority Date Filing Date Title
DE19936522 1999-08-06
DE19936522 1999-08-06
DE19939166 1999-08-20
DE19939166A DE19939166B4 (de) 1999-08-20 1999-08-20 Verfahren zum flexiblen Walzen eines Metallbandes

Publications (3)

Publication Number Publication Date
EP1074317A2 EP1074317A2 (de) 2001-02-07
EP1074317A3 EP1074317A3 (de) 2003-01-29
EP1074317B1 true EP1074317B1 (de) 2005-02-16

Family

ID=26054475

Family Applications (1)

Application Number Title Priority Date Filing Date
EP00115953A Expired - Lifetime EP1074317B1 (de) 1999-08-06 2000-07-26 Verfahren zum flexiblen Walzen eines Metallbandes

Country Status (5)

Country Link
US (1) US6336349B1 (ja)
EP (1) EP1074317B1 (ja)
JP (1) JP2001079607A (ja)
AT (1) ATE289229T1 (ja)
DE (1) DE50009532D1 (ja)

Cited By (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO2007062734A1 (de) 2005-12-02 2007-06-07 Voestalpine Automotive Gmbh Verfahren und vorrichtung zum aufheizen von stahlbauteilen in einem durchlaufofen
DE102009050997A1 (de) 2009-10-28 2011-05-12 Volkswagen Ag Verfahren und Umformvorrichtung zur Herstellung eines formgehärteten Bauteils
EP3097992A1 (de) 2015-05-29 2016-11-30 Giebel Kaltwalzwerk GmbH Verfahren zum stufenwalzen eines metallbandes
EP3342494A1 (en) 2016-12-30 2018-07-04 Outokumpu Oyj Method and device for rolling metal strips
EP3566790B1 (de) 2018-05-08 2021-01-06 Muhr und Bender KG Verfahren zur dynamischen walzspaltregelung beim flexiblen walzen von metallbändern

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DE10214473A1 (de) 2002-03-30 2003-10-23 Bayerische Motoren Werke Ag Querträger zwischen zwei seitlichen Randbereichen einer Fahrzeugtür
EP1388486B1 (de) 2002-08-09 2010-10-13 Bayerische Motoren Werke Aktiengesellschaft Fahrzeugkarosserie
DE10335666A1 (de) * 2003-08-04 2005-04-14 Bayerische Motoren Werke Ag Zug-Druckstrebe für eine Fahrzeugkarosserie
DE102007013739B3 (de) * 2007-03-22 2008-09-04 Voestalpine Stahl Gmbh Verfahren zum flexiblen Walzen von beschichteten Stahlbändern
DE102009057180A1 (de) 2009-01-30 2010-08-19 Sms Siemag Ag Vorrichtung und Verfahren zum Aufhaspeln eines Bandes, insbesondere Metallbandes
EP2745948A1 (de) * 2012-12-20 2014-06-25 Siemens VAI Metals Technologies GmbH Haspeleinrichtung mit rückbiegbarer Haspelwelle
DE102014210008A1 (de) * 2014-05-26 2015-11-26 Muhr Und Bender Kg Verfahren und Anlage zum Herstellen eines gehärteten Formteils
WO2017203312A1 (en) * 2016-05-24 2017-11-30 Arcelormittal Cold rolled and annealed steel sheet, method of production thereof and use of such steel to produce vehicle parts
WO2017203311A1 (en) * 2016-05-24 2017-11-30 Arcelormittal Cold rolled and annealed steel sheet, method of production thereof and use of such steel to produce vehicle parts
WO2017203315A1 (en) 2016-05-24 2017-11-30 Arcelormittal Cold rolled and annealed steel sheet, method of production thereof and use of such steel to produce vehicle parts
EP3301197B1 (en) 2016-09-29 2021-10-27 Outokumpu Oyj Method for cold deformation of an austenitic steel
DE102016123069A1 (de) 2016-11-30 2018-05-30 Dr. Ing. H.C. F. Porsche Aktiengesellschaft Verfahren und Vorrichtung zur Herstellung eines Leitersegmentes
PT3470145T (pt) * 2017-10-10 2022-04-12 Outokumpu Oy Processo para deformação parcial a frio de aço com espessura homogénea
KR102213747B1 (ko) * 2019-04-18 2021-02-08 안동대학교 산학협력단 선재 압연롤러의 간격 조절장치
KR102213746B1 (ko) * 2019-04-18 2021-02-08 안동대학교 산학협력단 스크레이퍼 및 간격조절장치가 구비된 선재압연롤러
WO2021084305A1 (en) 2019-10-30 2021-05-06 Arcelormittal A press hardening method
WO2024028640A1 (en) 2022-08-04 2024-02-08 Arcelormittal Steel sheet with variable thickness having a reduced risk of delayed fracture after press hardening, a press hardening method, a press hardened coated steel part

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JPS5035900B2 (ja) 1972-03-28 1975-11-19
DE2633351C2 (de) * 1976-07-24 1983-11-17 Hoesch Werke Ag, 4600 Dortmund Einrichtung zum Messen der Planheit von Metallbändern
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JPS56117812A (en) 1980-02-20 1981-09-16 Ishikawajima Harima Heavy Ind Co Ltd Shape controller
JPS6127111A (ja) * 1984-07-16 1986-02-06 Hitachi Ltd 圧延材の形状制御方法
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FR2695049B1 (fr) * 1992-09-03 1994-11-10 Lorraine Laminage Procédé et dispositif d'évaluation de la planéité d'une bande et ligne de fabrication d'une bande en continu comportant un dispositif d'évaluation de la planéité de la bande.
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KR100241167B1 (ko) * 1995-04-18 2000-03-02 에모토 간지 연속열간압연에 있어서의 강편접합부의 압연방법
JPH1034216A (ja) 1996-07-26 1998-02-10 Furukawa Electric Co Ltd:The タンデム圧延機の板クラウン制御方法および装置
JP3607029B2 (ja) * 1997-01-16 2005-01-05 東芝三菱電機産業システム株式会社 圧延機の制御方法及び制御装置
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Cited By (10)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO2007062734A1 (de) 2005-12-02 2007-06-07 Voestalpine Automotive Gmbh Verfahren und vorrichtung zum aufheizen von stahlbauteilen in einem durchlaufofen
DE102009050997A1 (de) 2009-10-28 2011-05-12 Volkswagen Ag Verfahren und Umformvorrichtung zur Herstellung eines formgehärteten Bauteils
DE102009050997B4 (de) * 2009-10-28 2017-07-13 Volkswagen Ag Verfahren und Umformvorrichtung zur Herstellung eines formgehärteten Bauteils
EP3097992A1 (de) 2015-05-29 2016-11-30 Giebel Kaltwalzwerk GmbH Verfahren zum stufenwalzen eines metallbandes
WO2016193089A1 (de) 2015-05-29 2016-12-08 Giebel Kaltwalzwerk Gmbh Verfahren zum stufenwalzen eines metallbandes
US10946425B2 (en) 2015-05-29 2021-03-16 Giebel Kaltwalzwerk Gmbh Method for the stepped rolling of a metal strip
EP3342494A1 (en) 2016-12-30 2018-07-04 Outokumpu Oyj Method and device for rolling metal strips
WO2018122020A1 (en) 2016-12-30 2018-07-05 Outokumpu Oyj Method and device for rolling metal strips
EP3566790B1 (de) 2018-05-08 2021-01-06 Muhr und Bender KG Verfahren zur dynamischen walzspaltregelung beim flexiblen walzen von metallbändern
US11511328B2 (en) 2018-05-08 2022-11-29 Muhr Und Bender Kg Dynamic roll gap control during flexible rolling of metal strips

Also Published As

Publication number Publication date
DE50009532D1 (de) 2005-03-24
US6336349B1 (en) 2002-01-08
EP1074317A2 (de) 2001-02-07
JP2001079607A (ja) 2001-03-27
ATE289229T1 (de) 2005-03-15
EP1074317A3 (de) 2003-01-29

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