EP0591291B1 - Regulation de la fabrication de feuillards lamines a chaud au moyen de laminoirs a chaud a cages multiples - Google Patents

Regulation de la fabrication de feuillards lamines a chaud au moyen de laminoirs a chaud a cages multiples Download PDF

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Publication number
EP0591291B1
EP0591291B1 EP92912619A EP92912619A EP0591291B1 EP 0591291 B1 EP0591291 B1 EP 0591291B1 EP 92912619 A EP92912619 A EP 92912619A EP 92912619 A EP92912619 A EP 92912619A EP 0591291 B1 EP0591291 B1 EP 0591291B1
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EP
European Patent Office
Prior art keywords
individual
tolerance range
control system
roll
control line
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
EP92912619A
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German (de)
English (en)
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EP0591291A1 (fr
Inventor
Günther SÖRGEL
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
Siemens Corp
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Siemens AG
Siemens Corp
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Application filed by Siemens AG, Siemens Corp 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
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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
    • 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 according to the preamble features of patent claim 1.
  • the aim is to achieve the required profile formation and flatness of the strips produced by using a small number of simple rolling stands without complex mechanical roller actuators. If roller actuators are unavoidable, these actuators should be simple and limited to just a few stands. Especially for hot strip mills, which are designed according to these criteria, there has been no real possibility to optimize the thickness profile. A stitch schedule based on empirical values is still common.
  • a suitable distribution of the distribution of the rolling forces is first selected from a series of standardized distribution of the rolling forces based on the experience of the rolling mill operator and then checked as part of a model calculation as to whether limit values for the rolling forces and critical flatness indices, which are also specified by the experienced operator, are exceeded.
  • 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 provided with a large number of complex measuring devices and adjusting elements on the rolling stands.
  • the physical conditions of a rolling mill can advantageously be used for control and calculation purposes in order to optimize it , and not just to commit to a predetermined straight line.
  • the optimization computer carries out a quick calculation of the load distribution options for a rolling and can do that Clarify the question of whether and with which load distribution the required profile can be reached at the target thickness or whether the target thickness or profile cannot be achieved 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 have to be provided and used for the roll stands. The influencing of the profile and the final thickness by roller actuators is known to the rolling mill operator.
  • the rolls of the individual stands of a rolling mill, 1 the rolled strip, and 3 the measuring devices and sensors for the individual rolls 1 and their drives, as well as for other function modules, e.g. for the roll gap, etc.
  • 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 pass schedule data 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 other operator and computer data. From the pass schedule calculation 9, the setpoint values result, which are calculated in 10 and which are specified for the individual controllers and actuators for the individual operating point controllers.
  • FIG. 1 The functional blocks shown in FIG. 1 are advantageously combined in one computer, but processing can also take place 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 generally spherical design (crowning) of the work rolls.
  • the strip has an edge thickness D R and a medium thickness D M , the edge thickness, for example (C40), being measured at the strip edge used.
  • the profile value for the invoice results from the relationship It is usually specified in um.
  • the respective special profile training is based on the requirements of the downstream cold rolling mill or the requirements on the hot strip produced.
  • 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 profile funnel resulting from the limit curves 15 and 16 has the symmetrical tolerance limit angle ⁇ in the area below the critical thickness and the tolerance limit angle ⁇ above and above the critical thickness ⁇ 2nd downward. This simplification is particularly cheap from a computational point of view and is sufficiently precise.
  • 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 straight line 14.
  • the rolling force is the main influencing factor on the pass reduction, the other rolling influencing factors, on the other hand, decrease 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 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 strip thickness and strip profile with only a few possibilities of influence.

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

Claims (8)

  1. Régulation de la fabrication de feuillards laminés à chaud au moyen d'un laminoir à chaud à cages multiples, lequel comporte un système de contrôle de processus prioritaire, auquel on impose un plan de passe comportant les dimensions initiales et finales, des données de matières et des températures de laminage, et un système de conduite de valeurs de consigne de régulateurs individuels autonomes secondaires pour les grandeurs de fonctionnement des différentes cages de laminoir, par exemple réglage des cylindres, vitesse de rotation, couple, les valeurs de consigne des régulateurs individuels étant déterminées par une opération de calcul utilisant des équations modèles par adaptation convergente des paramètres aux paramètres effectifs, de manière à obtenir une régulation des points de fonctionnement prédéfinissable et une commande et régulation des profilés étant effectuées par modification de la répartition de charges sur les cages individuelles, caractérisée en ce qu'en vue de la commande et de la régulation des profilés à partir d'une droite de commande de profilés (14), laquelle est définie dans le diagramme profilé/épaisseur par le point zéro et le profilé de consigne et l'épaisseur finale du feuillard laminé à chaud (2, 13), les points de fonctionnement sont déterminés de façon telle qu'ils se situent dans une plage de tolérance prédéterminée de la droite de commande de profilés (14), la plage de tolérance étant petite au-dessous de l'épaisseur critique, au-dessous de laquelle le flux de matière dans le feuillard laminé à chaud (2, 13) dans le sens de la largeur ne peut s'effectuer que de façon limitée, et étant plus grande au-dessus de l'épaisseur critique.
  2. Régulation selon la revendication 1, caractérisée en ce que les limites (15, 16) de la plage de tolérance au-dessous de l'épaisseur critique forment avec la droite de commande de profilés (14) un angle de déviation (β) qui est petit, et au-dessus de l'épaisseur critique un angle de déviation (α) qui est plus grand.
  3. Régulation selon la revendication 2, caractérisée en ce que les limites (15, 16) de la plage de tolérance au-dessous de l'épaisseur critique ont une allure symétrique et au-dessus de l'épaisseur critique une allure asymétrique par rapport à la droite de commande de profilés (14).
  4. Régulation selon la revendication 3, caractérisée en ce qu'au-dessus de l'épaisseur critique le rapport déviation des limites (15, 16)/droite de commande de profilés (14) est de 2 : 1 vers le haut et vers le bas.
  5. Régulation selon l'une des revendications précédentes, caractérisée en ce que l'on recalcule le profilé de consigne, lorsqu'apparaissent des points de fonctionnement en dehors de la plage de tolérance.
  6. Régulation selon l'une des revendications précédentes, caractérisée en ce qu'en plus de la modification de répartition de charges sur les cages individuelles en vue du respect de la plage de tolérance de la droite de commande de profilés (14), la rétroflexion des cylindres est influencée.
  7. Régulation selon l'une des revendications précédentes, caractérisée en ce qu'en plus de la modification de répartition de charges sur les cages individuelles en vue du respect de la plage de tolérance de la droite de commande de profilés (14), le décalage et/ou l'entrelacement des cylindres est influencé.
  8. Régulation selon l'une des revendications précédentes, caractérisée en ce qu'en plus de la modification de répartition de charges sur les cages individuelles en vue du respect de la plage de tolérance de la droite de commande de profilés (14), une modification de la rectification des cylindres et/ou un changement du bombé thermique est effectué.
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
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
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

Publications (2)

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

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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 (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN103611730A (zh) * 2013-11-19 2014-03-05 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
CN104588417A (zh) * 2015-01-21 2015-05-06 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
DE102018212074A1 (de) 2018-07-19 2020-01-23 Sms Group Gmbh Verfahren zum Ermitteln von Stellgrößen für aktive Profil- und Planheitsstellglieder für ein Walzgerüst und von Profil- und Mittenplanheitswerten für warmgewalztes Metallband
EP4574288A1 (fr) * 2023-12-20 2025-06-25 Primetals Technologies Germany GmbH Réglage prédictif de modèle de la bombé thermique d'un cylindre d'une cage de laminoir

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US5493885A (en) * 1994-03-10 1996-02-27 Kawasaki Steel Corporation Method and apparatus for controlling rolling process in hot strip finish rolling mill
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
RU2177847C1 (ru) * 2000-12-19 2002-01-10 Муриков Сергей Анатольевич Способ регулирования процесса прокатки
RU2195379C2 (ru) * 2001-02-26 2002-12-27 Плужников Юрий Владимирович Линия рулонного производства биметалла
RU2207204C1 (ru) * 2002-06-06 2003-06-27 ООО "Сорби стил" Способ оптимизации технологии производства проката
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
CN102665948B (zh) * 2009-10-21 2014-11-05 东芝三菱电机产业系统株式会社 控制设定装置及控制设定方法
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
RU2516429C2 (ru) * 2012-05-22 2014-05-20 Открытое акционерное общество "Магнитогорский металлургический комбинат" Способ управления процессом прокатки полосы
RU2500493C1 (ru) * 2012-05-22 2013-12-10 Открытое акционерное общество "Магнитогорский металлургический комбинат" Система 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
KR102122217B1 (ko) 2015-03-16 2020-06-12 에스엠에스 그룹 게엠베하 금속 스트립을 제조하기 위한 방법
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
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 (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN103611730A (zh) * 2013-11-19 2014-03-05 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
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
CN104588417A (zh) * 2015-01-21 2015-05-06 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
DE102018212074A1 (de) 2018-07-19 2020-01-23 Sms Group Gmbh Verfahren zum Ermitteln von Stellgrößen für aktive Profil- und Planheitsstellglieder für ein Walzgerüst und von Profil- und Mittenplanheitswerten für warmgewalztes Metallband
EP4574288A1 (fr) * 2023-12-20 2025-06-25 Primetals Technologies Germany GmbH Réglage prédictif de modèle de la bombé thermique d'un cylindre d'une cage de laminoir
WO2025132615A1 (fr) * 2023-12-20 2025-06-26 Primetals Technologies Germany Gmbh Réglage prédictif par modèle du bombage thermique d'un rouleau d'une cage de laminage

Also Published As

Publication number Publication date
DE59204272D1 (de) 1995-12-14
WO1993000181A1 (fr) 1993-01-07
EP0591291A1 (fr) 1994-04-13
ATE129938T1 (de) 1995-11-15
JPH06508560A (ja) 1994-09-29
US5502992A (en) 1996-04-02

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