EP1360018A1 - Procede et dispositif pour preregler des grandeurs de processus d'un train de laminoir servant a laminer des feuillards metalliques - Google Patents

Procede et dispositif pour preregler des grandeurs de processus d'un train de laminoir servant a laminer des feuillards metalliques

Info

Publication number
EP1360018A1
EP1360018A1 EP02712772A EP02712772A EP1360018A1 EP 1360018 A1 EP1360018 A1 EP 1360018A1 EP 02712772 A EP02712772 A EP 02712772A EP 02712772 A EP02712772 A EP 02712772A EP 1360018 A1 EP1360018 A1 EP 1360018A1
Authority
EP
European Patent Office
Prior art keywords
metal strips
strip
process variables
rolling
values
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.)
Granted
Application number
EP02712772A
Other languages
German (de)
English (en)
Other versions
EP1360018B1 (fr
Inventor
Joachim Höhne
Friedemann Schmid
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
Publication of EP1360018A1 publication Critical patent/EP1360018A1/fr
Application granted granted Critical
Publication of EP1360018B1 publication Critical patent/EP1360018B1/fr
Anticipated expiration legal-status Critical
Expired - Lifetime legal-status Critical Current

Links

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
    • 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

Definitions

  • the invention relates to a method and a device for presetting process variables of a rolling mill for rolling metal strips, the tolerance ranges of the guaranteed values for a predeterminable number of metal strips being used for the optimal setpoint calculation of the process variables.
  • the quality of a metal strip is determined in the form of predefined guarantee values for strip flatness, strip contour and strip profile.
  • actuators are used which adjust the shape of the roll gap, also referred to as the roll gap profile.
  • the setpoints for the actuators are referred to below as process variables.
  • a method and device for presetting a rolling mill for rolling a metal strip is known, the presetting being carried out in such a way that the difference between the profile and / or the flatness of the metal strip as it runs out of the rolling mill and one in front- given target profile and / or a predetermined target flatness is minimal.
  • the difference between the profile and / or the flatness of the metal strip when it leaves the rolling mill and a predetermined target profile and / or a predetermined target flatness is corrected as a function of the difference between parameters of the metal strip and the corresponding parameters of a previously rolled metal strip.
  • Conversion belts are to be understood as metal strips whose properties differ from the properties of a previously rolled metal strip or which are assigned to a different rolling program compared to a previous metal strip. If the rollers are markedly spherical, changing the setpoints of the process variables often leads to an undesired deviation of the roll gap profile from its ideal shape. This effect has a negative impact on the required quality characteristics of the strip flatness, strip contour and strip profile.
  • process variables of the actuators of a rolling mill for rolling metal strips are preset via a predeterminable number of metal strips.
  • the required guarantee values i.e. H. Target specifications and associated tolerance ranges for quality features of the metal strips, such as. B. strip flatness and / or strip contour and / or strip profile, taken into account via the predetermined number of metal strips in such a way that, depending on the tolerance ranges of the guaranteed values, an optimal target value calculation of the process variables of the actuators is carried out.
  • An advantageous embodiment of the invention is that at least 2 metal strips are taken into account for the setpoint calculation.
  • process variables of the actuators are preset, depending on the required guarantee values.
  • An advantageous embodiment of the invention resides in the fact that, given the predetermined number of metal strips, the metal strips are identified in which the specified guarantee values cannot be maintained due to the current setpoint setting of the process variables.
  • priority features are evaluated when identifying critical metal strips. Priority features are e.g. B. geometric sizes (e.g. strip thickness, strip width) and / or material properties (e.g. strength, assortment - stainless steel).
  • a new setpoint calculation of the process variables of the actuators is carried out depending on the metal strips identified.
  • a further advantageous embodiment of the invention is characterized in that the new setpoint calculation exploits the tolerance ranges of the setpoints in such a way that the guaranteed values of the identified metal strips are achieved, with a specific deviation of the setpoints within the tolerance range.
  • the device according to the invention according to claim 7 comprises a computing system for presetting process variables in at least one actuator of a rolling mill for rolling metal strips, for which guaranteed values are specified which are the
  • the computing system is designed such that an optimal setpoint calculation can be carried out for at least one process variable over a predeterminable number of metal strips, the tolerance ranges of the setpoints being taken into account over the specified number of metal strips.
  • FIG. 1 shows an example of the embodiment according to the invention for presetting process variables of the actuators of a rolling mill.
  • Process variables are preset using a known method 2 and one Extended method 1.
  • process data of the current strip with regard to strip profile, strip flatness and strip contour are calculated in the pass schedule 3.
  • process data such as B. rolling force, strip thickness and strip width, calculated and then transmitted to the profile and flatness control 4.
  • a pass schedule 3 is carried out for a predeterminable number of metal strips. It has proven to be advantageous to consider a number of two to eight metal bands as a rule in the case of changeover bands. In the event of very large deviations of the roll gap profile from its ideal shape, however, more than eight metal strips can also be taken into account at any time.
  • process data such. B. rolling force, strip thickness and strip width, calculated for the predetermined number of metal strips and stored in a data buffer 6.
  • critical metal strips 7 are identified and marked as critical.
  • Critical metal strips 7 are identified in the metal strips in which the specified guarantee values cannot be maintained due to the current setpoint setting of the process variables of the actuators and / or which are defined by priority features.
  • the calculated process data of the identified critical metal strips 7 and the calculated process data of the current metal strip 8 are then transmitted to the profile and flatness control 4.
  • process data and plant restrictions such as B.
  • ⁇ s is an actuator range that depends on the position of the critical metal strips identified.
  • the following table shows an example for the definition of ⁇ s for the actuator CVC (roll shift).
  • the value ⁇ represents a factor from 1 to 0, which specifies the actuator limits.
  • the actuator limits calculated in the actuator limit calculation 9 are then transferred to the profile and flatness control 4 of the known method 2.
  • the new setpoints of the process variables 5 for the actuators for setting the whale gap profile are calculated in the profile and flatness control 4 of the known method 2.

Landscapes

  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Control Of Metal Rolling (AREA)
  • Length Measuring Devices With Unspecified Measuring Means (AREA)
  • Reduction Rolling/Reduction Stand/Operation Of Reduction Machine (AREA)
EP02712772A 2001-02-13 2002-02-12 Procede et dispositif pour preregler des grandeurs de processus d'un train de laminoir servant a laminer des feuillards metalliques Expired - Lifetime EP1360018B1 (fr)

Applications Claiming Priority (3)

Application Number Priority Date Filing Date Title
DE10106584A DE10106584A1 (de) 2001-02-13 2001-02-13 Verfahren und Vorrichtung zur Voreinstellung von Prozessgrößen einer Walzstraße zum Walzen von Metallbändern
DE10106584 2001-02-13
PCT/DE2002/000502 WO2002064276A1 (fr) 2001-02-13 2002-02-12 Procede et dispositif pour preregler des grandeurs de processus d'un train de laminoir servant a laminer des feuillards metalliques

Publications (2)

Publication Number Publication Date
EP1360018A1 true EP1360018A1 (fr) 2003-11-12
EP1360018B1 EP1360018B1 (fr) 2010-06-30

Family

ID=7673844

Family Applications (1)

Application Number Title Priority Date Filing Date
EP02712772A Expired - Lifetime EP1360018B1 (fr) 2001-02-13 2002-02-12 Procede et dispositif pour preregler des grandeurs de processus d'un train de laminoir servant a laminer des feuillards metalliques

Country Status (7)

Country Link
US (1) US6691540B2 (fr)
EP (1) EP1360018B1 (fr)
JP (1) JP2004517736A (fr)
CN (1) CN1231305C (fr)
AT (1) ATE472381T1 (fr)
DE (2) DE10106584A1 (fr)
WO (1) WO2002064276A1 (fr)

Families Citing this family (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE102007035283A1 (de) * 2007-07-27 2009-01-29 Siemens Ag Verfahren zur Einstellung eines Zustands eines Walzguts, insbesondere eines Vorbands
CN101722194B (zh) * 2009-11-05 2011-09-21 南京钢铁股份有限公司 单机架炉卷轧机无间隙轧制工艺
WO2014128710A1 (fr) 2013-02-21 2014-08-28 Nova Measuring Instruments Ltd. Procédé et système de mesure de phase optique
EP3798750A1 (fr) 2019-09-25 2021-03-31 SMS Group GmbH Procédé de surveillance et de commande d'une installation de laminage de produits métalliques

Family Cites Families (13)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
NL7905404A (nl) * 1979-07-11 1981-01-13 Estel Hoogovens Bv Instellen van een meertuigs walsstraat voor het koudwalsen van metaalbanden.
JPS61202711A (ja) * 1985-03-05 1986-09-08 Toshiba Corp 圧延機学習制御方法および装置
JPS62214813A (ja) * 1986-03-17 1987-09-21 Sumitomo Metal Ind Ltd 圧延機制御方法
JPH0661566B2 (ja) * 1987-11-18 1994-08-17 株式会社日立製作所 圧延機のセットアップ装置
JPH0688059B2 (ja) * 1990-07-26 1994-11-09 川崎製鉄株式会社 クラウン学習制御方法
JPH09174127A (ja) * 1995-12-25 1997-07-08 Kawasaki Steel Corp 仕上圧延機のクラウン形状制御用アクチュエータ設定値算出方法
DE19622825B4 (de) * 1996-06-07 2005-03-31 Betriebsforschungsinstitut VDEh - Institut für angewandte Forschung GmbH Voreinstellung für Kaltwalzreversiergerüst
AT408623B (de) * 1996-10-30 2002-01-25 Voest Alpine Ind Anlagen Verfahren zur überwachung und steuerung der qualität von walzprodukten aus warmwalzprozessen
JPH10180321A (ja) * 1996-12-26 1998-07-07 Kawasaki Steel Corp 圧延機の学習制御方法
JP3223856B2 (ja) * 1997-04-17 2001-10-29 日本鋼管株式会社 圧延機の制御方法及び圧延機の制御装置
JP3348826B2 (ja) * 1997-12-04 2002-11-20 川崎製鉄株式会社 熱間圧延材の圧延条件設定方法
DE19851554C2 (de) * 1998-11-09 2001-02-01 Siemens Ag Verfahren und Einrichtung zur Voreinstellung einer Walzstraße
JP2000167612A (ja) * 1998-12-04 2000-06-20 Toshiba Corp 圧延機の最適パススケジュール決定方法及び装置

Non-Patent Citations (1)

* Cited by examiner, † Cited by third party
Title
See references of WO02064276A1 *

Also Published As

Publication number Publication date
DE50214509D1 (de) 2010-08-12
DE10106584A1 (de) 2002-09-19
WO2002064276A1 (fr) 2002-08-22
EP1360018B1 (fr) 2010-06-30
CN1457274A (zh) 2003-11-19
US20030046965A1 (en) 2003-03-13
ATE472381T1 (de) 2010-07-15
JP2004517736A (ja) 2004-06-17
CN1231305C (zh) 2005-12-14
US6691540B2 (en) 2004-02-17

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