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EP0732979B1 - Installation de coulee continue et de laminage pour bandes d'acier et systeme de reglage connexe - Google Patents

Installation de coulee continue et de laminage pour bandes d'acier et systeme de reglage connexe Download PDF

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Publication number
EP0732979B1
EP0732979B1 EP94902613A EP94902613A EP0732979B1 EP 0732979 B1 EP0732979 B1 EP 0732979B1 EP 94902613 A EP94902613 A EP 94902613A EP 94902613 A EP94902613 A EP 94902613A EP 0732979 B1 EP0732979 B1 EP 0732979B1
Authority
EP
European Patent Office
Prior art keywords
continuous casting
rolling
casting
control
plant according
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
EP94902613A
Other languages
German (de)
English (en)
Other versions
EP0732979A1 (fr
Inventor
Werner Kuttner
Friedemann Schmid
Hannes Schulze Horn
Georg Seefried
Kurt Hohendahl
Thomas Berger
Immo Domnig
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
Original Assignee
Siemens AG
Siemens Corp
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
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Application filed by Siemens AG, Siemens Corp filed Critical Siemens AG
Publication of EP0732979A1 publication Critical patent/EP0732979A1/fr
Application granted granted Critical
Publication of EP0732979B1 publication Critical patent/EP0732979B1/fr
Anticipated expiration legal-status Critical
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Classifications

    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B22—CASTING; POWDER METALLURGY
    • B22D—CASTING OF METALS; CASTING OF OTHER SUBSTANCES BY THE SAME PROCESSES OR DEVICES
    • B22D11/00—Continuous casting of metals, i.e. casting in indefinite lengths
    • B22D11/16—Controlling or regulating processes or operations
    • B22D11/20—Controlling or regulating processes or operations for removing cast stock
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B22—CASTING; POWDER METALLURGY
    • B22D—CASTING OF METALS; CASTING OF OTHER SUBSTANCES BY THE SAME PROCESSES OR DEVICES
    • B22D11/00—Continuous casting of metals, i.e. casting in indefinite lengths
    • B22D11/06—Continuous casting of metals, i.e. casting in indefinite lengths into moulds with travelling walls, e.g. with rolls, plates, belts, caterpillars
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B21—MECHANICAL METAL-WORKING WITHOUT ESSENTIALLY REMOVING MATERIAL; PUNCHING METAL
    • B21B—ROLLING OF METAL
    • B21B1/00—Metal-rolling methods or mills for making semi-finished products of solid or profiled cross-section; Sequence of operations in milling trains; Layout of rolling-mill plant, e.g. grouping of stands; Succession of passes or of sectional pass alternations
    • B21B1/46—Metal-rolling methods or mills for making semi-finished products of solid or profiled cross-section; Sequence of operations in milling trains; Layout of rolling-mill plant, e.g. grouping of stands; Succession of passes or of sectional pass alternations for rolling metal immediately subsequent to continuous casting
    • B21B1/463—Metal-rolling methods or mills for making semi-finished products of solid or profiled cross-section; Sequence of operations in milling trains; Layout of rolling-mill plant, e.g. grouping of stands; Succession of passes or of sectional pass alternations for rolling metal immediately subsequent to continuous casting in a continuous process, i.e. the cast not being cut before rolling
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B22—CASTING; POWDER METALLURGY
    • B22D—CASTING OF METALS; CASTING OF OTHER SUBSTANCES BY THE SAME PROCESSES OR DEVICES
    • B22D11/00—Continuous casting of metals, i.e. casting in indefinite lengths
    • B22D11/06—Continuous casting of metals, i.e. casting in indefinite lengths into moulds with travelling walls, e.g. with rolls, plates, belts, caterpillars
    • B22D11/0622—Continuous casting of metals, i.e. casting in indefinite lengths into moulds with travelling walls, e.g. with rolls, plates, belts, caterpillars formed by two casting wheels
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B22—CASTING; POWDER METALLURGY
    • B22D—CASTING OF METALS; CASTING OF OTHER SUBSTANCES BY THE SAME PROCESSES OR DEVICES
    • B22D11/00—Continuous casting of metals, i.e. casting in indefinite lengths
    • B22D11/12—Accessories for subsequent treating or working cast stock in situ
    • B22D11/1206—Accessories for subsequent treating or working cast stock in situ for plastic shaping of strands
    • 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

Definitions

  • the invention relates to a casting and rolling plant for steel strips with a vertical two-roll caster Liquid steel feed device, a deflection device of the cast tape in a horizontal position and horizontal working rolling mill with reel device, as well optionally a downstream cold rolling mill, where all components via individual technological control loops be performed.
  • the object is achieved in that the casting and rolling system the steel feeder, the casting-rolling device, the Deflection device for the strip, the rolling mill and the Decoiler for integrated adjustment of the technological control loops based on has a control system connecting mathematical models that the individual parts of the system in relation to their interaction to produce a tape suitable for further processing, i.e. to comply with the tolerances downstream Processing facilities such as the cold rolling mill, in coordination with one another in such a way that the effects the control steps of a plant section to the in Mass flow direction of the following system components is taken into account will.
  • Slider closure drive with pouring jet control on the tundish or forehearth The pouring stream runs into a pre-cooling device, possibly also in an inlet mold, and there the mold level, e.g. by radiometric measurement, for example with a measuring device from Dr. Berthold, accurate to ⁇ 3 mm set.
  • This setting is independent of the cross section the distribution and / or pre-cooling device. This can be above be open or designed as a chamber.
  • Coolant control and possibly a stirring device in the form an electrical coil provided.
  • This can be one or be formed in several parts.
  • the distribution and Pre-cooling device can be used especially for thicker cross-sections be designed as an inlet mold, but it can also as Distribution channel or as a box-like attachment with cover be trained.
  • training as an enema mold offers about the advantageous adjustable training, as in DE 40 30 683 A1 is described.
  • the pair of casting rolls advantageously has a coolant control as well as a power and position control and in particular a Instantaneous form calculation.
  • the shape of the casting rolls will according to the requirements of the downstream rolling devices aligned, in such a way that these with a minimum of Adjustment provide a tolerance band.
  • a rectangular exit profile is suitable emphasized that advantageously e.g. has convex edges.
  • Simple duo or quarto mill stands are used as mill stands provided that at least one roll gap adjustment and one Have roll bending device. Starting from the actual cast strip profile, if possible, the Set profile and set cross-section, which also is influenced by the reel pulling force.
  • a Heat treatment zone the inductive devices and optionally also has cooling devices.
  • a pendulum annealing is carried out.
  • a temperature maintenance zone in front of the reel be provided. This results in a controlled heat treatment from the rolling heat.
  • the Entry profile in the rollers is advantageous by invoice determined, the invoice can be checked by measurement. The calculation goes e.g. from the solidification data of the Alloy, the calculated current shape of the casting rolls and if necessary from the strip temperature profile across the width.
  • the inductive devices and the casting technology Facilities are advantageous through an automation system based on Siemens "SIMATIC S5" controlled and regulated while the casting rolls that Deformation rollers and the reel advantageously have a control and control based on Siemens "Symadin D".
  • the Automation devices are advantageous due to a bus system connected to each other and to a control unit.
  • the finish rolled Band shows profile deviations below the Cold rolling entry tolerance about max. ⁇ 0.025 mm for a 4 mm tape on.
  • the individual automation and measuring devices are especially in technology-related automation groups organized and through a feedforward feedback control system connected with each other.
  • the control system has an empirical value matrix with influencing link in the basic form of a self-optimizing neural network with fuzzy input data and automatically generated expert knowledge. So results a superimposed control system that is relatively simple designed individual units in a cost-effective version Generation of a crack-free band with tolerances within the Control limits of a downstream cold rolling mill with each other can connect and automatically experience contributes to how the individual units changed Input values and procedure behavior.
  • tundish or forehearth flow control in a pouring tube or similar by means of a slide with an electric drive Dependency on the inlet casting level and the specified one Requirements, such as the strip thickness, are made.
  • Inlet mold level or stand above the casting rollers can not only by radiometric, but also by optical or float measurements can be determined.
  • the coolant control of the inlet area if necessary or similar takes place depending on wall thermocouples or Tundish outflow control data associated with a Outflow measurement. This is also advantageous for this Empirical value matrix used, e.g. the alloy influences considered.
  • the casting rolls have a speed and Torque control, the moment is determined required deformation energy very advantageous Cyclical releases of the speed and torque control.
  • the deformation energy currently required is a good control variable. With their use can be very advantageous breakthroughs on the exit side as well can be avoided as a too high location Solidification shell union zone.
  • Hanging the Unification zone to one side can be by a selective Cooling can be compensated. About the one-sided hanging of the Unification zone is shown in DE 40 21 197 A1.
  • the unilateral hanging of the union zone is noticeable e.g. based on the outlet temperature profile.
  • the casting rolls are in relation to their axis position (distance, offset) controlled. Their actual position and shape can e.g. by Continuous IR laser measurements determined and corrected if necessary will.
  • the amount of coolant is, especially according to specifications the inlet area and the casting roll speed. Minor crowning corrections are due to electrical Means, e.g. induction heating possible.
  • the extraction of the cast tape is carried out taking into account the small maximum tensile stress on the exit side of the Controlled casting rolls.
  • This scheme can either be in Connection with the regulation of the roll stands, but also as Regulation of a decoupled scaffold with tension control be viewed by electromagnetic means.
  • Optimal is a regulation on constant, maximum mass flow, depending on the maximum cooling capacity with an adjustment the roll speed to the casting roll speed.
  • both the strip edge temperature and the strip edge shape can by regulating the cooling and position of the Side elements of the casting rolls are made.
  • the side elements the casting rolls are advantageous on the circumference of the casting rolls arranged and work advantageously in conjunction with a inductive heating or cooling and one Position control, e.g. according to an empirical value matrix.
  • the surfaces of the casting rolls advantageously have Structured pattern, with a herringbone or zigzag pattern is particularly advantageous. Cleaning the structure wells can e.g. by splashing water in connection with a brush system, it being advantageous that Check cleaning with a laser, if necessary Can do rework.
  • an electromagnetic working Belt vibration device provided by if necessary an also advantageous electromagnetic stage or Casting roller vibration device is supplemented.
  • a picture and Pattern recognition unit e.g. with infrared cameras, with the the surface condition of the belt is checked. Under assuming visible tears that are a maximum length exceed, are an indication of surface cracks (Deviation from the normal crack pattern), likewise on both sides Tears on the edges, the behavior of the influenced electromagnetic devices accordingly and if necessary, one possible by inductive partial heating Repaired the cracks.
  • the error is corrected through targeted electrical measures, in the event of edge tears supported by a position and / or heating cooling control of the edge formation guide elements. So results the entry of a tape free of macro cracks into the first deformation scaffold in which inevitable micro cracks and intercrystalline detachments are welded.
  • a profile and Thickness measuring device in particular a profile and thickness trend evaluation makes. This information serves in particular the neuro-fuzzy system with its if-then rules, you can but e.g. also conventionally through differentiation be evaluated. The same applies to the rest Trends that are considered.
  • a inductive heat treatment with specified Temperature profiles, e.g. a pendulum annealing at 720 ° C and / or a subsequent hold at 500 ° C to 550 ° C with alloyed Stole.
  • the downstream reel has a tension control in order to last rolling stand while maintaining a minimal and Maximum tension the predetermined final thickness of the tape to reach.
  • the overlaid control system which is also essentially based of mathematical models with adaptation on a neuro-fuzzy basis works (largely with network training), serves especially to coordinate what has been achieved in the casting rolls Profile and band condition with the downstream Aggregates. So it is possible to use the casting rolls as well Deformation rollers advantageous, e.g. without elaborate Displacement devices (forming rollers) or Equipment to change crowning (casting rolls), too operate. Through the empirical value matrix for the different inlet conditions in the casting rolls, their Behavior in operation through simulation and / or tests in Commissioning can be determined and for which Entry conditions into the mill stands, relatively quickly one optimal response to the existing conditions achieved will.
  • the running-in conditions especially the inlet temperature
  • the running-in conditions can be below Consideration of the available cooling capacity with very simple aggregates after a relatively short time tolerance band can be achieved.
  • Usually enough estimated values of the parameters for the empirical value matrix of fuzzy sets made with the help of the self-learning neural network can be improved.
  • the associated fuzzy rules for processing the fuzzy sets are based on previous effect simulation (especially with regard to critical conditions) verified during trial operation and also go into the empirical value matrix, whereby the neural network the weighting of the fuzzy rules changed according to requirements.

Landscapes

  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Continuous Casting (AREA)
  • Metal Rolling (AREA)
  • Control Of Metal Rolling (AREA)
  • Feedback Control In General (AREA)
  • Heat Treatment Of Sheet Steel (AREA)
  • Furnace Housings, Linings, Walls, And Ceilings (AREA)
  • Treatment Of Steel In Its Molten State (AREA)
  • Coating With Molten Metal (AREA)

Claims (13)

  1. Installation de coulée continue et de laminage pour bandes d'acier comportant un dispositif de coulée vertical à deux cylindres pourvu d'un dispositif d'amenée d'acier liquide, un dispositif de renvoi de la bande coulée dans une position horizontale et un laminoir horizontal équipé d'une enrouleuse, ainsi éventuellement qu'un laminoir à froid monté en aval, tous les composants étant gérés par des circuits de réglage technologiques individuels,
    caractérisée en ce qu'elle comporte un système pilote reliant le dispositif (1, 2) d'amenée d'acier, le dispositif de coulée continue et de laminage, le dispositif de renvoi de la bande, le laminoir et l'enrouleuse (10) en vue d'un réglage intégré des circuits de réglage technologiques individuels sur la base de modèles mathématiques, lequel système pilote règle l'interaction des différents éléments de l'installation en vue de produire une bande convenant pour un traitement ultérieur, c'est-à-dire en vue de respecter les tolérances de dispositifs de traitement ultérieur montés en aval, comme par exemple du laminoir à froid, de telle sorte que l'on prenne en compte les effets des opérations de réglage d'un élément de l'installation sur les éléments suivants dans la direction de traitement de la matière.
  2. Installation de coulée continue et de laminage selon la revendication 1,
    caractérisée en ce
    que le système pilote optimise le réglage des différents éléments de l'installation les uns sur les autres et le comportement des différentes unités, notamment en associant des composants neuronaux à logique floue.
  3. Installation de coulée continue et de laminage selon la revendication 1 ou 2,
    caractérisée en ce
    que le système pilote génère une matrice (12) de valeurs empiriques, qui est utilisée pour la commande et le réglage, en particulier pour des commandes pilotes, des différents éléments de l'installation et de leurs composants.
  4. Installation de coulée continue et de laminage selon la revendication 1, 2 ou 3,
    caractérisée en ce
    que l'optimisation comprend notamment une simulation de comportement dans différents états d'entrée, en particulier critiques.
  5. Installation de coulée continue et de laminage selon la revendication 1, 2, 3 ou 4,
    caractérisée en ce que les positions des cylindres de coulée et les positions des éléments qui y sont rattachés sont commandées par des organes de réglage avec des transmetteurs de position absolue ou analogues, le système pilote prédéterminant les valeurs des régulateurs de position absolue et établissant des circuits de correction en fonction du résultat sur la bande ou sur des segments de la bande.
  6. Installation de coulée continue et de laminage selon la revendication 1, 2, 3, 4 ou 5,
    caractérisée en ce qu'on prélève des valeurs de correction pour la commande de préférence de la matrice de valeurs empiriques, des composants neuronaux à logique floue assurant la liaison et l'interaction, notamment en prenant en compte le comportement dans le temps des effets des corrections.
  7. Installation de coulée continue et de laminage selon la revendication 1, 2, 3, 4, 5 ou 6,
    caractérisée en ce
    que la position de la zone de jonction des croûtes de bande formées est une grandeur réglante principale des cylindres de coulée, la position de la zone de jonction étant déterminée par l'énergie de déformation momentanément nécessaire des cylindres de coulée.
  8. Installation de coulée continue et de laminage selon la revendication 1, 2, 3, 4, 5, 6 ou 7,
    caractérisée en ce
    qu'elle comporte des moyens électromagnétiques pour le déplacement longitudinal et transversal et/ou le guidage de la bande dans la zone située en aval des cylindres de coulée (3).
  9. Installation de coulée continue et de laminage selon la revendication 1, 2, 3, 4, 5, 6, 7 ou 8,
    caractérisée en ce
    que les dispositifs inductifs et les dispositifs techniques de coulée de l'installation sont commandés et réglés directement par un système d'automatisation de base.
  10. Installation de coulée continue et de laminage selon la revendication 1, 2, 3, 4, 5, 6, 7, 8 ou 9,
    caractérisée en ce
    que les appareils d'automatisation du système d'automatisation de base sont reliés de manière avantageuse par un système de bus entre eux et avec l'unité pilote.
  11. Installation de coulée continue et de laminage selon une ou plusieurs des revendications précédentes,
    caractérisée en ce
    que le système pilote superposé comporte, pour régler les circuits de réglage technologiques, une matrice (12) de valeurs empiriques avec liaison d'interaction et possède des composants auto-optimisants, notamment des composants neuronaux à logique floue.
  12. Installation de coulée continue et de laminage selon une ou plusieurs des revendications précédentes,
    caractérisée en ce
    que le système pilote superposé effectue, sur la base de modèles mathématiques et de composants neuronaux à logique floue, une commande pilote des composants des différents éléments de l'installation qui permet de remplacer des circuits et des organes de réglage classiques.
  13. Installation de coulée continue et de laminage selon une des revendications précédentes,
    caractérisée en ce
    que les modèles mathématiques peuvent être utilisés pour optimiser l'interaction des éléments de l'installation.
EP94902613A 1993-12-01 1993-12-21 Installation de coulee continue et de laminage pour bandes d'acier et systeme de reglage connexe Expired - Lifetime EP0732979B1 (fr)

Applications Claiming Priority (4)

Application Number Priority Date Filing Date Title
WOPCT/DE93/01146 1993-12-01
DE9301146 1993-12-01
WOPCT/DE93/00000 1993-12-01
PCT/DE1993/001228 WO1995015233A1 (fr) 1993-12-01 1993-12-21 Installation de coulee continue et de laminage pour bandes d'acier et systeme de reglage connexe

Publications (2)

Publication Number Publication Date
EP0732979A1 EP0732979A1 (fr) 1996-09-25
EP0732979B1 true EP0732979B1 (fr) 1998-04-15

Family

ID=6888675

Family Applications (1)

Application Number Title Priority Date Filing Date
EP94902613A Expired - Lifetime EP0732979B1 (fr) 1993-12-01 1993-12-21 Installation de coulee continue et de laminage pour bandes d'acier et systeme de reglage connexe

Country Status (12)

Country Link
EP (1) EP0732979B1 (fr)
JP (1) JPH09506296A (fr)
KR (1) KR960706382A (fr)
AT (1) ATE165029T1 (fr)
BR (1) BR9307904A (fr)
CA (1) CA2177831C (fr)
DE (1) DE59308416D1 (fr)
ES (1) ES2115205T3 (fr)
FI (1) FI102737B1 (fr)
RU (1) RU2121408C1 (fr)
SK (1) SK68196A3 (fr)
WO (1) WO1995015233A1 (fr)

Cited By (2)

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DE10310357A1 (de) * 2003-03-10 2004-09-30 Siemens Ag Gießwalzanlage zur Erzeugen eines Stahlbandes
DE102007004053A1 (de) * 2007-01-22 2008-07-31 Siemens Ag Gießanlage zum Gießen eines Gießguts und Verfahren zur Führung eines Gießguts aus einem Gießbehälter einer Gießanlage

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RU2250151C1 (ru) * 2003-09-16 2005-04-20 Общество с ограниченной ответственностью Фирма "Дата-Центр" Способ производства тонкого металлического листа из тонкой литой полосы и автоматизированная линия технологического оборудования для производства тонкого металлического листа из тонкой литой полосы
AT501314B1 (de) * 2004-10-13 2012-03-15 Voest Alpine Ind Anlagen Verfahren und vorrichtung zum kontinuierlichen herstellen eines dünnen metallbandes
CN100402166C (zh) * 2006-03-07 2008-07-16 中冶赛迪工程技术股份有限公司 平整机
US8205474B2 (en) * 2006-03-08 2012-06-26 Nucor Corporation Method and plant for integrated monitoring and control of strip flatness and strip profile
DE102007058709A1 (de) * 2007-08-04 2009-02-05 Sms Demag Ag Verfahren zum Herstellen eines Bandes aus Stahl
PL2412460T3 (pl) * 2010-07-26 2019-09-30 Primetals Technologies Italy S.R.L. Urządzenie i sposób do wytwarzania podłużnych wyrobów metalowych
RU2603412C2 (ru) * 2015-02-10 2016-11-27 федеральное государственное автономное образовательное учреждение высшего образования "Самарский государственный аэрокосмический университет имени академика С.П. Королева (национальный исследовательский университет)" (СГАУ) Устройство для бесслитковой прокатки жидкого металла
CN117718331B (zh) * 2023-12-26 2025-07-11 成都蜀虹装备制造股份有限公司 应用于铜线杆生产下的连铸连轧设备控制方法及系统

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Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE10310357A1 (de) * 2003-03-10 2004-09-30 Siemens Ag Gießwalzanlage zur Erzeugen eines Stahlbandes
DE102007004053A1 (de) * 2007-01-22 2008-07-31 Siemens Ag Gießanlage zum Gießen eines Gießguts und Verfahren zur Führung eines Gießguts aus einem Gießbehälter einer Gießanlage

Also Published As

Publication number Publication date
SK68196A3 (en) 1997-10-08
JPH09506296A (ja) 1997-06-24
FI102737B (fi) 1999-02-15
WO1995015233A1 (fr) 1995-06-08
ES2115205T3 (es) 1998-06-16
FI962295L (fi) 1996-05-31
BR9307904A (pt) 1996-08-27
CA2177831A1 (fr) 1995-06-08
FI962295A0 (fi) 1996-05-31
ATE165029T1 (de) 1998-05-15
CA2177831C (fr) 2005-06-21
DE59308416D1 (de) 1998-05-20
EP0732979A1 (fr) 1996-09-25
FI102737B1 (fi) 1999-02-15
KR960706382A (ko) 1996-12-09
RU2121408C1 (ru) 1998-11-10

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