EP0591291A1 - Systeme de regulation de la fabrication de feuillards lamines a chaud au moyen de laminoirs a chaud a cages multiples. - Google Patents

Systeme de regulation de la fabrication de feuillards lamines a chaud au moyen de laminoirs a chaud a cages multiples.

Info

Publication number
EP0591291A1
EP0591291A1 EP92912619A EP92912619A EP0591291A1 EP 0591291 A1 EP0591291 A1 EP 0591291A1 EP 92912619 A EP92912619 A EP 92912619A EP 92912619 A EP92912619 A EP 92912619A EP 0591291 A1 EP0591291 A1 EP 0591291A1
Authority
EP
European Patent Office
Prior art keywords
individual
profile
shape control
regulation according
rolling
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
EP92912619A
Other languages
German (de)
English (en)
Other versions
EP0591291B1 (fr
Inventor
Guenther Soergel
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
Family has litigation
First worldwide family litigation filed litigation Critical https://patents.darts-ip.com/?family=8206876&utm_source=google_patent&utm_medium=platform_link&utm_campaign=public_patent_search&patent=EP0591291(A1) "Global patent litigation dataset” by Darts-ip is licensed under a Creative Commons Attribution 4.0 International License.
Application filed by Siemens AG filed Critical Siemens AG
Priority to EP92912619A priority Critical patent/EP0591291B1/fr
Publication of EP0591291A1 publication Critical patent/EP0591291A1/fr
Application granted granted Critical
Publication of EP0591291B1 publication Critical patent/EP0591291B1/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
    • B21B37/28—Control of flatness or profile during rolling of strip, sheets or plates
    • 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

Definitions

  • the invention relates to a regulation in the production of hot strip by means of a multi-stand hot strip rolling mill, in particular a broadband rolling mill, which has a superordinate process control system to which a pass schedule with the
  • Initial and final dimensions, with material data, rolling temperatures etc. are specified, and a guide system for setpoint control of subordinate, coupled individual controllers for the variable function variables of the individual roll stands, e.g. Roll setting, speed, torque, etc., the setpoints of the individual controllers are determined by a calculation process using model equations with converging parameter adjustment to the actual parameters such that a predeterminable operating point control results.
  • the aim is to achieve the required profile formation and flatness of the strips produced by a small number of simple roll stands without complex mechanical roller actuators.
  • roller actuators are unavoidable, these actuators should be simple and limited to just a few stands.
  • hot strip mills which are designed according to these criteria, there has been no real possibility to optimize the thickness profile.
  • a stitch schedule design based on empirical values is still common. From EP-0 121 148 B1 a profile and flatness control for hot strip tandem mills is known, in which the strip profile at the critical thickness, below which no substantial reshaping of the rolled strip in the width direction can be achieved, is the basis for a complex one Flatness and profile formation regulation of the hot strip is used. A regulation with the same effect is also disclosed in DE 27 36 234 A2.
  • Rolling mills with the aforementioned regulations require a large number of thicknesses, profile and flatness measuring devices in the course of the rolling mill as well as complex scaffolding regulations.
  • the total cost of a hot strip, in particular broadband, controlled in this way is high.
  • Both the measuring devices and the roller actuators are maintenance-intensive and increase the operating effort considerably.
  • a multi-stand hot strip rolling mill in particular a broadband rolling mill
  • modernization of old rolling mills should also be possible with the control according to the invention without the rolling mills having to be converted or with a
  • the problem is solved by a profile control and regulation via changes in the load distribution on the individual stands in such a way that the operating points lie in the predetermined tolerance range of a shape control straight line.
  • the mill operator Years of experience with computer technology that is familiar in principle so it is advantageously simple in terms of rolling technology, possible to achieve the required profile and flatness values as far as possible - only by influencing the main influencing variable of the rolling process, the distribution of the required total rolling force to the individual stands.
  • the appropriate load distribution can be achieved by using a shape control line for the required adaptation model.
  • the required profile for strips with different rolling temperatures, profile configurations, final thicknesses etc. is achieved.
  • the 'control and computer technology invention can not reduce irrelevant the "Hardware" -Expenses in the rolling technology combined with greater flexibility.
  • a profile funnel with transitions for the limits of / 5 and o ⁇ results in the range of the critical thickness as the tolerance range of the shape control straight line
  • the Profile funnel is formed in the area of the deviation angle / symmetrically to the shape control straight line and asymmetrically in the area of the deviation angle, in particular in a ratio of 2: 1, between the area above and below the shape control straight line.
  • the optimization computer carries out a quick calculation of the load distribution options for a rolling operation and can clarify the question of whether and with which load distribution the required profile can be achieved at the target thickness or whether the target thickness or profile cannot be achieved in this way for the given rolling mill . If necessary, if the calculation on the optimization computer shows that the target profile or target thickness cannot be reached, the boundary conditions have to be changed or additional actuators for the roll stands have to be provided and used. The influencing of the profile and the final thickness by roller actuators is known to the rolling mill operator.
  • the data of the target profile of the strip produced are used to calculate the shape control line. If there are operating points outside the profile funnel during the calculation, recalculation takes place with new load distribution assumptions until all operating points lie in the profile funnel. If the optimization calculation shows that, in addition to changing the load distribution on the individual stands, in order to maintain the tolerance range of the shape control straight lines, additional influences on the rolling process must act, this is advantageously done by influencing solution of the roll bending, the roll displacement and / or limitation and / or by influencing the thermal crowning, for example by cooling or also by hydraulic or thermal influencing. A roller grinding change can also result as a result of the optimization calculation in connection with the profile funnel. It is advantageous to continuously compensate for the roll wear influences.
  • FIG. 2 shows the schematically represented work rolls of a roll stand and FIG. 3 shows the shape control straight lines and their tolerance range.
  • FIG. 1 the rolls of the individual stands of a rolling mill are 1, the rolled strip 2 and 3 the measuring devices and sensors for the individual rolls 1 and their
  • the regulators and stellators for the rollers are designated 3a.
  • the measured values of the measuring devices and sensors 3 are given to a measured value adaptation 4, after which they reach the statistical measured value backup 5.
  • the stitch schedule recalculation 6 and the are carried out with these values Adaptation of the algorithms used for the recalculation of the pass schedule in 7.
  • the values from 7 are transferred to the pass schedule calculation in 9, which determines, among other things, the rolling force, the rolling moment, in particular the profile, but also the position.
  • the rolling strategy calculation includes the rolling strategy data summarized in part 8, which results in particular from the type of material, the finished thickness and the target profile as well as further operator and computer data.
  • FIG. 1 The functional blocks shown in FIG. 1 are advantageously combined in one computer, but processing can also be carried out in separate computers or separate parts of a computer.
  • Corresponding computers in which the computing processes for the individual controllers can also run are known from publications, brochures, manuals etc. by the applicant. Their programming and the parameterization of the individual controllers result from the operating manuals.
  • 11 denotes a lower work roll
  • 12 an upper work roll
  • 13 the rolled strip.
  • the schematic representation does not take into account the roll bending opposite to the strip shape shown due to the influence of the rolling force, but does reflect the basically spherical design (crowning) of the work rolls.
  • the strip has an edge thickness D R and a medium thickness D M , the edge thickness being measured, for example (C.), at the strip edge used.
  • 14 denotes the shape control straight line with the lower tolerance limit 15 and the upper tolerance limit 16.
  • points 17 and 18 which are in the range of the critical thickness, below which the material flow in the width direction can only take place to a very limited extent, the slope changes the limit curves 15 and 16.
  • the shape control straight line 14 extends through the zero point in its extension.
  • the operating points can be moved within the tolerance limit curves 15 and 16.
  • the target profile and final thickness define the shape control line 14.
  • the rolling force is the main influencing factor on the pass reduction, the other rolling influences influence, on the other hand, and only represent auxiliary variables. A redistribution of the rolling force thus represents the essential control element for the profile and the thickness achieved.
  • the basic condition is compliance with the Total rolling force, ie the required total acceptance.
  • the strip profile achieved has a direct effect on the strip flatness during further processing, so that this too is determined by the strip thickness and strip profile with only a small possibility of influence.

Landscapes

  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Control Of Metal Rolling (AREA)
  • Metal Rolling (AREA)
  • Manufacturing And Processing Devices For Dough (AREA)

Abstract

Un système de régulation de la fabrication de feuillards laminés à chaud au moyen de laminoirs à chaud à cages multiples, notamment des laminoirs à larges bandes, comprend un système d'ordre supérieur de contôle de processus auquel est associé un diagramme de référence contenant les côtes initiales et finales, les données concernant les matériaux, les températures de laminage, etc. et un système de guidage en fonction de valeurs de consigne de régulateurs individuels découplés d'ordre inférieur des paramètres fonctionnels variables des cages individuelles du laminoir, tels que l'ajustement du rouleau de laminage, la vitesse de rotation, le couple, etc. Les valeurs de consigne des régulateurs individuels sont calculées par des équations modèles qui permettent d'adapter par convergence les paramètres aux paramètre réels, ce qui permet d'obtenir une régulation prédéterminable du point de fonctionnement dynamique. La commande et la régulation du profil sont effectuées par modification de la distribution de la charge parmi les cages individuelles, de sorte que les points de fonctionnement dynamique se situent dans une plage prédéterminée de tolérance d'une droite de commande de la forme.
EP92912619A 1991-06-28 1992-06-16 Regulation de la fabrication de feuillards lamines a chaud au moyen de laminoirs a chaud a cages multiples Expired - Lifetime EP0591291B1 (fr)

Priority Applications (1)

Application Number Priority Date Filing Date Title
EP92912619A EP0591291B1 (fr) 1991-06-28 1992-06-16 Regulation de la fabrication de feuillards lamines a chaud au moyen de laminoirs a chaud a cages multiples

Applications Claiming Priority (4)

Application Number Priority Date Filing Date Title
EP91110753 1991-06-28
EP91110753 1991-06-28
PCT/EP1992/001364 WO1993000181A1 (fr) 1991-06-28 1992-06-16 Systeme de regulation de la fabrication de feuillards lamines a chaud au moyen de laminoirs a chaud a cages multiples
EP92912619A EP0591291B1 (fr) 1991-06-28 1992-06-16 Regulation de la fabrication de feuillards lamines a chaud au moyen de laminoirs a chaud a cages multiples

Publications (2)

Publication Number Publication Date
EP0591291A1 true EP0591291A1 (fr) 1994-04-13
EP0591291B1 EP0591291B1 (fr) 1995-11-08

Family

ID=8206876

Family Applications (1)

Application Number Title Priority Date Filing Date
EP92912619A Expired - Lifetime EP0591291B1 (fr) 1991-06-28 1992-06-16 Regulation de la fabrication de feuillards lamines a chaud au moyen de laminoirs a chaud a cages multiples

Country Status (6)

Country Link
US (1) US5502992A (fr)
EP (1) EP0591291B1 (fr)
JP (1) JPH06508560A (fr)
AT (1) ATE129938T1 (fr)
DE (1) DE59204272D1 (fr)
WO (1) WO1993000181A1 (fr)

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN107363101A (zh) * 2016-05-12 2017-11-21 鞍钢股份有限公司 一种热轧带钢数学模型数据层别判断方法
WO2020016387A1 (fr) 2018-07-19 2020-01-23 Sms Group Gmbh Procédé permettant de déterminer des grandeurs de réglage pour des éléments actifs de réglage du profil et de la planéité d'une cage de laminoir et des valeurs de profil et de planéité moyenne d'une bande métallique laminée à chaud

Families Citing this family (21)

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Publication number Priority date Publication date Assignee Title
EP0671225B1 (fr) * 1994-03-10 1999-07-07 Kawasaki Steel Corporation Procédé pour la régulation d'un processus de laminage d'un laminoir finisseur à chaud
DE19545262B4 (de) * 1995-11-25 2004-08-05 Alstom Power Conversion Gmbh Einrichtung zum Betrieb einer mehrgerüstigen Walzstraße
DE19618712B4 (de) * 1996-05-09 2005-07-07 Siemens Ag Regelverfahren für ein Walzgerüst zum Walzen eines Bandes
DE19642918C2 (de) * 1996-10-17 2003-04-24 Siemens Ag System zur Berechnung des Enddickenprofils eines Walzbandes
CN1103648C (zh) * 1997-05-23 2003-03-26 阿尔卡塔尔公司 用于操作多机架轧机的装置
WO1999024180A1 (fr) * 1997-11-10 1999-05-20 Siemens Aktiengesellschaft Procede et installation de laminage a chaud de minces bandes d'acier
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
DE10339766A1 (de) * 2003-08-27 2005-04-07 Siemens Ag Verfahren und Einrichtung zur Steuerung einer Anlage zur Herstellung von Stahl
CN100382903C (zh) * 2006-05-30 2008-04-23 江阴博丰钢铁有限公司 热轧条形宽扁钢的轧制工艺
JP5380544B2 (ja) * 2009-10-21 2014-01-08 東芝三菱電機産業システム株式会社 制御設定装置及び制御設定方法
EP2527052A1 (fr) * 2011-05-24 2012-11-28 Siemens Aktiengesellschaft Procédé de fonctionnement pour une voie de laminage
RU2494826C1 (ru) * 2012-05-22 2013-10-10 Открытое акционерное общество "Магнитогорский металлургический комбинат" Способ оптимизации технологии производства проката
RU2500493C1 (ru) * 2012-05-22 2013-12-10 Открытое акционерное общество "Магнитогорский металлургический комбинат" Система управления процессом прокатки полосы
RU2516429C2 (ru) * 2012-05-22 2014-05-20 Открытое акционерное общество "Магнитогорский металлургический комбинат" Способ управления процессом прокатки полосы
RU2519712C1 (ru) * 2012-11-21 2014-06-20 Открытое акционерное общество "Магнитогорский металлургический комбинат" Способ оптимизации технологии производства проката
RU2532574C1 (ru) * 2013-05-20 2014-11-10 Открытое акционерное общество "Северсталь" (ОАО "Северсталь") Способ холодной прокатки полосы на многоклетевом непрерывном стане
CN103611730B (zh) * 2013-11-19 2015-11-18 北京首钢自动化信息技术有限公司 用于提高热连轧新品种首卷钢尺寸控制精度的方法
CN104588417B (zh) * 2015-01-21 2016-10-05 燕山大学 一种基于机理的带钢厚度横向分布的特征参数识别方法
JP6704925B2 (ja) 2015-03-16 2020-06-03 エス・エム・エス・グループ・ゲゼルシャフト・ミト・ベシュレンクテル・ハフツング 金属ストリップの製造のための方法
RU2657268C1 (ru) * 2017-07-07 2018-06-09 Общество с ограниченной ответственностью Компания "Объединенная Энергия" Способ контроля процесса прокатки на многоклетевом стане
CN108817103B (zh) * 2018-06-06 2020-01-14 武汉科技大学 一种轧钢模型钢族层别分类优化方法

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Cited By (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN107363101A (zh) * 2016-05-12 2017-11-21 鞍钢股份有限公司 一种热轧带钢数学模型数据层别判断方法
CN107363101B (zh) * 2016-05-12 2018-12-04 鞍钢股份有限公司 一种热轧带钢数学模型数据层别判断方法
WO2020016387A1 (fr) 2018-07-19 2020-01-23 Sms Group Gmbh Procédé permettant de déterminer des grandeurs de réglage pour des éléments actifs de réglage du profil et de la planéité d'une cage de laminoir et des valeurs de profil et de planéité moyenne d'une bande métallique laminée à chaud
US11938528B2 (en) 2018-07-19 2024-03-26 Sms Group Gmbh Method for ascertaining control variables for active profile and flatness control elements for a rolling stand and profile and average flatness values for hot-rolled metal strip

Also Published As

Publication number Publication date
ATE129938T1 (de) 1995-11-15
WO1993000181A1 (fr) 1993-01-07
US5502992A (en) 1996-04-02
EP0591291B1 (fr) 1995-11-08
JPH06508560A (ja) 1994-09-29
DE59204272D1 (de) 1995-12-14

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