EP1601479A1 - Installation de coulee continue et de laminage pour produire un feuillard d'acier - Google Patents

Installation de coulee continue et de laminage pour produire un feuillard d'acier

Info

Publication number
EP1601479A1
EP1601479A1 EP04713049A EP04713049A EP1601479A1 EP 1601479 A1 EP1601479 A1 EP 1601479A1 EP 04713049 A EP04713049 A EP 04713049A EP 04713049 A EP04713049 A EP 04713049A EP 1601479 A1 EP1601479 A1 EP 1601479A1
Authority
EP
European Patent Office
Prior art keywords
steel strip
rolling mill
steel
casting
cast
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.)
Withdrawn
Application number
EP04713049A
Other languages
German (de)
English (en)
Inventor
Rüdiger DÖLL
Klaus Pronold
Albrecht Sieber
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 EP1601479A1 publication Critical patent/EP1601479A1/fr
Withdrawn legal-status Critical Current

Links

Classifications

    • 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
    • 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
    • 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
    • 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
    • B22D11/0608—Continuous casting of metals, i.e. casting in indefinite lengths into moulds with travelling walls, e.g. with rolls, plates, belts, caterpillars formed by caterpillars
    • 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
    • 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
    • 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
    • B21B1/22—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 plates, strips, bands or sheets of indefinite length
    • B21B1/24—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 plates, strips, bands or sheets of indefinite length in a continuous or semi-continuous process
    • 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
    • B21B1/466—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 non-continuous process, i.e. the cast being cut before rolling
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B21—MECHANICAL METAL-WORKING WITHOUT ESSENTIALLY REMOVING MATERIAL; PUNCHING METAL
    • B21B—ROLLING OF METAL
    • B21B15/00—Arrangements for performing additional metal-working operations specially combined with or arranged in, or specially adapted for use in connection with, metal-rolling mills
    • B21B2015/0057—Coiling the rolled product
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B21—MECHANICAL METAL-WORKING WITHOUT ESSENTIALLY REMOVING MATERIAL; PUNCHING METAL
    • B21B—ROLLING OF METAL
    • B21B2201/00—Special rolling modes
    • B21B2201/14—Soft reduction
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B21—MECHANICAL METAL-WORKING WITHOUT ESSENTIALLY REMOVING MATERIAL; PUNCHING METAL
    • B21B—ROLLING OF METAL
    • B21B2201/00—Special rolling modes
    • B21B2201/18—Vertical rolling pass lines
    • 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
    • B21B37/74—Temperature control, e.g. by cooling or heating the rolls or the product
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B21—MECHANICAL METAL-WORKING WITHOUT ESSENTIALLY REMOVING MATERIAL; PUNCHING METAL
    • B21B—ROLLING OF METAL
    • B21B45/00—Devices for surface or other treatment of work, specially combined with or arranged in, or specially adapted for use in connection with, metal-rolling mills
    • B21B45/004—Heating the product

Definitions

  • the present invention relates to a cast roll plant for producing a steel strip, with a liquid steel storage device, a liquid steel adding device, a vertically operating casting device with running mold, a reduction device with a plurality of Rollenp ' a- ren, a deflection device for deflecting the cast
  • Such a casting mill is z. B. from EP 0329 639 Bl.
  • the object of the present invention is to further develop such a cast rolling mill so that high-quality steel strips can be produced with it in a simple manner.
  • the object is achieved in that, for the integrated setting of the technological control loops, the liquid-steel storage device, the liquid-steel adding device, the pouring device, the reduction device, the deflection device, the rolling mill and the reel device are connected in a control-engineering manner and operate on the basis of mathematical models Guidance system that performs the individual plant parts in terms of their interaction in coordination with each other such that the effects of the control steps of a plant part are taken into account in Massengurrich- following plant parts.
  • the invention is therefore based on the creation of a plant-part comprehensive control system extending from the liquid steel storage to reeling.
  • the steel strip cast by means of the mold has a casting thickness between 40 and 100 mm at the exit from the mold, the steel strip has a reduced casting thickness compared to conventional continuous casting plants, so that less deformation work is done to produce the final product, ie the rolled steel strip be uss.
  • the steel strip in the reduction device can be reduced to a roll input thickness of between 10 and 40 mm, in particular between 15 and 35 mm, a significant reduction of the strip thickness takes place before the actual rolling. Since this reduction takes place at high temperatures, possibly even before the solidification of the steel strip, only a small deformation work is required for this reduction. This is especially true if the steel strip in the reduction device can be reduced by at least 25% in relation to the casting thickness.
  • the reduction means preferably comprises an upper part in which the steel strip is reshaped and a lower part in which the steel strip retains its shape.
  • the casting-rolling plant can be guided by the guidance system in such a way that the steel strip only solidifies in the reduction device, then only very little deformation work has to be done to reshape the steel strip in the reduction device. This is particularly true when the steel strip only solidifies in the lower part where it retains its shape.
  • the rolling mill may alternatively be a pure hot rolling mill or a hot rolling mill with a downstream cold rolling mill.
  • the steel strip has a final thickness between 1.0 and 6.0 mm, with which it is reeled by the reel device, in the other case, the final thickness is between 0.3 and 2.0 mm.
  • Roll input thickness is reduced, which is determined as a function of the final thickness, the reduction amount is already determined in the reduction device such that subsequent parts of the system are efficiently operated taking into account technologically advantageous boundary conditions.
  • a cooling section is arranged between the rolling mill and the reel device, and the cooling section is also guided by a technological control loop and this control loop is also guided by the control system, an even more comprehensive system results, in which the cooling section can also be integrated into the holistic guide Integrated control system.
  • the mill is preferably preceded by a scale washer, which is likewise guided by a technological control loop, whereby this control loop is also guided by the control system.
  • the continuous casting of the steel strip preferably takes place by means of the cast roll mills according to the invention.
  • Steel strip is immediately rolled immediately after casting, reducing and redirecting and reeled.
  • an intermediate reel and a compensation furnace to be arranged between the deflection device and the rolling mill, whereby these parts of the installation are also guided by a technological control loop and this control loop is again guided by the guidance system.
  • the control system includes a material model by means of which a temperature behavior of the steel or the steel strip can be modeled from the steel storage device to the reel means under path tracking, wherein the technological control circuits depending on the modeled temperature behavior of the steel or the steel strip are timely performed.
  • a material model by means of which a temperature behavior of the steel or the steel strip can be modeled from the steel storage device to the reel means under path tracking, wherein the technological control circuits depending on the modeled temperature behavior of the steel or the steel strip are timely performed. Because the properties of a steel or a steel strip depend not only on its chemical composition and its mechanical treatment, but also on the temperature history.
  • phase transformations of the steel or steel strip eg liquid-solid or austenitic-ferrite
  • an even better modeling takes place. It is even possible that the structural properties of the steel strip are also modeled within the framework of the material model.
  • the material model works particularly well.
  • the individual parts of the system have locally acting devices for influencing the temperature of the steel or the steel strip.
  • these devices are controlled by the control system associated with the technological control circuits assigned to the individual parts of the system.
  • control system determines (in addition) at least one reference variable for system component acting temperature influencing the steel or the steel strip and guides the relevant system parts according to this reference variable.
  • the mass flow comes into question as a reference across all plant sections.
  • a change in the mass flow affects all immediately after one another arranged plant parts in which the steel strip is processed continuously.
  • all subsequent locally acting devices must be appropriately adjusted in order to ensure a constant temperature behavior of the steel strip.
  • FIG 1 shows a casting rolling mill
  • 2 shows a detail of FIG 1
  • FIG. 3 shows a control system with subordinate technological control loops for a casting rolling mill.
  • a cast roll plant for producing a steel strip 1 initially has a liquid steel storage device 2.
  • This device 2 is usually designed as a so-called tundish. From the tundish 2, liquid steel passes via a liquid-metal addition device 3 (for example a liftable sealing plug), which is indicated only schematically, and a dip tube 4 into a casting device 5.
  • a liquid-metal addition device 3 for example a liftable sealing plug
  • a dip tube 4 into a casting device 5.
  • Mirror is doing in a known manner to a few mm, z. B. regulated to + 3 mm exactly.
  • the casting device 5 is formed in the present case as a vertically operating casting device 5. She has one
  • the casting device 5 is arranged downstream of a reduction device 7.
  • the reduction device 7 has a plurality of pairs of rollers 8, by means of which the steel strip 1 is guided and reduced to a roller input thickness d2.
  • the reduction device 7 is arranged downstream of a deflection device 9. This deflects the steel strip 1 in a horizontal position. Finally, the deflection device 9 is followed by a rolling mill 10, in which the steel strip 1 is rolled down to a final thickness d3. After rolling, the steel strip 1 is reeled by means of a reeling device 11.
  • a technological control loop 2 ', 3 r , 5', 1 ', 9 "to 11' is assigned to each of the plant sections 2, 3, 5, 7, 9 to 11.
  • the technological control loop 2 ' carries the liquid steel storage device 2 , the control circuit 3 ', the liquid steel adding device 3, etc. All components 2 to 11 are thus guided over their respective control circuit 2' to 11 '.
  • control system 12 For integrated setting of the technological control circuits 2 'to 11' of the casting rolling mill is assigned a control system 12.
  • the control system 12 operates on the basis of mathematical models. If necessary, the models can be implemented in neural networks, possibly also in fuzzy neuro networks. It connects the control circuits 2 'to 11' for the individual plant sections 2, 3, 5, 7, 9, 10 and 11. technically together. This makes it possible in particular, the individual plant parts 2, 3, 5, 7, 9, 10 and 11 in
  • Liquid steel adding device 3 the casting device 5, the reduction device 7 and the rolling mill 10 again shown more clearly.
  • the formation of the mold 6 with individual plates 6 is clearly visible.
  • the broad sides of the mold 6 consist of the plates 6. If appropriate, however, the narrow sides not visible in FIG. 2 could also be formed in this way.
  • the steel strand 1 produced by the casting device 5 already has the casting thickness d 1 of only 40 to 100 mm.
  • the bandwidth b is preferably between 500 and 2000 mm.
  • the casting and rolling system is guided by the control system 12 such that the steel strip 1 emerges from the mold 6 as a strand with a solid (solidified) strand shell 1 'and liquid strand core 1. Only in the reduction device 7 occurs a complete solidification of the steel strip 1 a.
  • the steel strip 1 is reduced to the roll input thickness d2.
  • the roll input thickness d2 is preferably between 10 and 40 mm, usually it is even 'between 15 and 35 mm.
  • the steel strip 1 is reduced to a roll inlet thickness d2 which is at least 25% below the casting thickness dl.
  • the reduction device 7 has an upper part 13 'and a lower part 13. In the upper part 13 ', the steel strip 1 is reduced in thickness, in the lower part 13 ⁇ it retains its shape.
  • the leadership of the casting rolling mill by the control system 12 is designed such that the steel strip 1 solidifies only in the lower part 13 * of the reduction device 7. In the upper part 13 ', in which the steel strip 1 is formed, however, it still has the liquid strand core 1 *.
  • the reduction device 7 can be arranged downstream of a single vertically operating rolling stand 7 *, here a quarto scaffolding.
  • a single vertically operating rolling stand 7 * here a quarto scaffolding.
  • the rolling stand 7 ' if it is present, preferably guided by the control unit 7' associated with the reduction device 7.
  • the deflection can also be done in other ways, in particular by the exercise of electromagnetic forces.
  • the steel strip 1 according to FIG. 1 is fed directly to the rolling mill 10.
  • a tinder scrubber 14 is arranged between the deflection device 9 and the rolling mill 10 while a tinder scrubber 14 is arranged.
  • the scale scrubber 14 is usually associated with the technological control loop 10 'of the rolling mill 10, so it is also guided by this control loop 10'.
  • the scale scrubber 14 is thus also guided by a technological control loop, namely the control loop 10 'for the rolling mill 10, this loop 10' in turn being guided by the control system 12.
  • the rolling mill 10 can have up to 10 rolling stands. It may alternatively be designed as a pure hot rolling mill or as a hot rolling mill with downstream cold rolling mill.
  • the steel strip 1 is rolled down in the rolling mill 10 to a final thickness d3 of 1.0 to 6.0 mm.
  • the rolling mill 10 is designed as a hot rolling mill with a downstream cold rolling mill, the steel strip 1 is rolled down in the hot rolling mill to an intermediate thickness d4 1.0 to 6.0 mm, in the downstream cold rolling mill to the final thickness d3, in this case between 0 , 3 and 2.0 mm.
  • the steel strip 1 is then reeled by the reeling device 11.
  • the final thickness d3 has an influence on the roll input thickness d2.
  • the roll input thickness d2 at a final roll thickness d3 of 1.0 mm is fifteen to twenty times the final thickness d3, and at a final roll thickness d3 of 6.0 mm, six or seven times. So it lies in this case between 15 and 42 mm.
  • the roller input thickness d2 results in this case analogously from the transition thickness d4.
  • a cooling section 15 is arranged between the rolling mill 10 and the reeling device 11.
  • the cooling section 15 is assigned a (separate) technological control circuit 15 ', from which the cooling section 15 is guided. Also, this control loop 15 'is guided by the control system 12.
  • FIG. 3 the components or plant parts 2, 3, 5, 7, 9 to 11 and 15 of the cast rolling mill are again shown schematically.
  • the associated control circuits 2 'to 11', 15 'and the control system 12 are also shown. According to FIG 3 are of the control circuits 2 'to 11', 15 'continuously -. B. with a time interval of 0.2 seconds -
  • the casting mirror and a withdrawal speed with which the steel strip 1 emerges from the mold 6 are detected in a known manner and transmitted to the path tracker 16.
  • the material flow entering the mold 6 and leaving the mold 6 can thus be determined without further ado.
  • the material speeds of the steel strip 1 are transmitted to the Wegv Congresser 16.
  • the tracker 16 Due to the information supplied to it, the tracker 16 is able to realize in a known manner a tracking of the steel or the steel strip 1 through the entire casting rolling mill. The result of this tracking is transmitted from the tracker 16 to the control system 12.
  • the control system 12 includes a material model 17.
  • the material model 17 By means of the material model 17, at least the pure temperature behavior of the steel or the steel strip 1 can be modeled.
  • phase transitions of the steel or of the steel strip 1 eg the solidification behavior, ie the phase transition from liquid to solid, or phase transitions within the solid phase, eg from austenite to ferrite
  • phase transitions of the steel or of the steel strip 1 may also be preferred.
  • phase transitions of the steel or of the steel strip 1 eg the solidification behavior, ie the phase transition from liquid to solid, or phase transitions within the solid phase, eg from austenite to ferrite
  • the material model 17 it is even possible that in the context of the material model 17 also structural properties of the steel strip 1 such. For example, the particle size and the microstructural be liert. This then mechanical properties of the steel strip 1 such.
  • Real-time executable temperature models are known.
  • DE 196 12 420 A1, DE 199 31 331 A1 and DE 101 29 565 A1 as well as the earlier applications "Control method for a finishing train for rolling metal hot strip * of 15.11.2001, official file reference 101, preceded by a cooling section 56 008.7, and "modeling method for a metal * dated 06.11.2002, official file reference 102 51 716.9, called.
  • the material model 17 preferably also models the deformation behavior of the steel strip 1 in the rolling mill 10, including temperature effects caused thereby. Also such models are well known. For example, reference is made to the earlier application "Computer-aided determination of setpoints for profile and planarity actuators * dated 15.03.2002, official file number 102 11 623.7, and the prior art mentioned there.
  • the material model 17 requires a number of input variables.
  • the chemical composition of the molten steel is needed. Because of the chemical composition depend inter alia transformation temperatures and structural properties etc. from. This composition is the material model 17 either by a user or - z. B. upon detection of the feed of a steelmaking facility by the associated control circuit - fed automatically.
  • the melt temperature hereinafter referred to as TO
  • This temperature TO is detected by means of a known measuring device 18 in the liquid steel storage device 2 and fed via the control loop 2 'or directly to the control system 12 and then the material model 17 as an initial parameter.
  • the melt temperature T0 could also be detected behind the liquid steel adding device 3. This is indicated by dashed lines in FIG.
  • the individual plant parts 5, 7, 9, 10, 11 and 15 have locally acting means for influencing the temperature of the steel or the steel strip 1.
  • these facilities include cooling facilities, eg. B. for spraying water on the steel strip 1 or for cooling the mold plates 6. If necessary, - in particular inductively acting - heaters may be provided.
  • These devices are controlled via the corresponding control circuits 5 ', 7', 9 ', 10', 11 ', 15'. Their manipulated variables are also supplied to the material model 17.
  • the material model 17 On the basis of the information about the material flow, which are supplied to the material model 17 from the tracker 16, and the information about the temperature influence of the steel or the steel strip 1, the material model 17 is therefore able to control the temperature behavior of the steel or the steel strip 1 under tracking from the steel storage device 2 to the reeling device 11 to model.
  • the material hardness and the rolling temperature can be determined based on the model before piercing the steel strip 1 in a rolling stand.
  • the material hardness depends inter alia on the rolling temperature and the thermal-mechanical pretreatment of the steel strip 1.
  • the material hardness can be used in particular for determining the
  • the adaptation element 19 is furthermore supplied with corresponding expected temperatures T 1 'to T 6', which should be present on the basis of the modeling of the temperature behavior by the material model 17.
  • the adaptation member 19 can thus determine in a conventional manner correction factors K1 to K6, by means of which the material model 17 (gradually) to the actual behavior of the steel or the steel strip 1 is adapted.
  • the take-off speed with which the steel strip 1 is withdrawn from the mold 6 can be varied. This has an influence on the subsequent system parts up to and including the coiler 11.
  • a setting of a rolling stand of the rolling mill 10 can be changed. This affects everyone subsequent rolling stands of the rolling mill 10 as well as on the cooling section 15 and the reeling device 11. Such variations of the material flow thus act as part of the installation.
  • the control system 12 also determines guide variables for such system component measures. These guide sizes also indirectly influence the temperature behavior of the steel strip 1, because they change the length of time during which the locally acting devices act on the
  • Steel strip 1 can act. If, therefore, such system part cross-acting guide sizes are changed and these changes to the technological control loops 2 'to 11', 15 'are transmitted, the relevant parts of the plant 2 to 11, 15 are performed according to this reference variable. At the same time, however, the setpoint values for the material flow downstream, locally acting devices for influencing the temperature are correspondingly adapted by the control system 12 so that the overall temperature behavior of the steel strip 1 remains unchanged.
  • the rolling mill 10 of the deflection 9 is immediately downstream.
  • a cast steel strip 1 must therefore be rolled immediately in the rolling mill 10.
  • the modeling of the steel strip 1 also takes into account this decoupling.
  • the intermediate reel 20 and the compensation furnace 21 a further technological control loop 20 'associated, which is also performed by the control system 12.
  • the rolling mill 10, the reeling device 11, the intermediate reel 20 and the compensation furnace 21 can be combined to form a so-called Steckel mill.

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  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Metal Rolling (AREA)
  • Control Of Metal Rolling (AREA)

Abstract

La présente invention concerne un procédé pour produire un feuillard d'acier (1). A cette fin, on utilise une installation de coulée continue et de laminage qui présente un dispositif de stockage d'acier liquide (2), un dispositif de distribution d'acier liquide (3), un dispositif de coulée (5) à fonctionnement vertical, qui présente une coquille rotative (6), un dispositif de réduction (7) qui comprend une pluralité de paires de cylindres (8), un dispositif de déviation (9) qui permet de dévier le feuillard d'acier coulé (1) en position horizontale, un laminoir (10) à fonctionnement horizontal, ainsi qu'un dispositif d'enroulement (11), tous ces systèmes étant guidés par l'intermédiaire de boucles d'asservissement technologiques individuelles (2' à 11'). Afin d'assurer un réglage intégré des boucles d'asservissement technologiques (2' à 11'), l'installation de coulée continue et de laminage présente également un système de direction (12) qui relie, au moyen d'une technique de régulation, les parties de l'installation (2 à 11) les unes aux autres. Ce système de direction fonctionne sur la base de modèles mathématiques (17) et guide les parties de l'installation individuelles (2 à 11) par rapport à leur interaction, en accord les unes avec les autres, de façon à prendre en compte les effets des étapes de régulation d'une partie de l'installation (2 à 11) sur des parties de l'installation (2 à 11) suivantes dans la direction de débit.
EP04713049A 2003-03-10 2004-02-20 Installation de coulee continue et de laminage pour produire un feuillard d'acier Withdrawn EP1601479A1 (fr)

Applications Claiming Priority (3)

Application Number Priority Date Filing Date Title
DE10310357 2003-03-10
DE10310357A DE10310357A1 (de) 2003-03-10 2003-03-10 Gießwalzanlage zur Erzeugen eines Stahlbandes
PCT/EP2004/001694 WO2004080628A1 (fr) 2003-03-10 2004-02-20 Installation de coulee continue et de laminage pour produire un feuillard d'acier

Publications (1)

Publication Number Publication Date
EP1601479A1 true EP1601479A1 (fr) 2005-12-07

Family

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Family Applications (1)

Application Number Title Priority Date Filing Date
EP04713049A Withdrawn EP1601479A1 (fr) 2003-03-10 2004-02-20 Installation de coulee continue et de laminage pour produire un feuillard d'acier

Country Status (5)

Country Link
US (1) US20080135203A1 (fr)
EP (1) EP1601479A1 (fr)
CN (1) CN1758970A (fr)
DE (1) DE10310357A1 (fr)
WO (1) WO2004080628A1 (fr)

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DE102004061939B3 (de) * 2004-12-22 2006-08-03 Siemens Ag Gießwalzanlage für ein Metallband, Erzeugungsverfahren für ein Metallband und Metallband selbst
ITMI20051764A1 (it) * 2005-09-22 2007-03-23 Danieli Off Mecc Processo e impianto per la produzione di nastro metallico
ITRM20050523A1 (it) 2005-10-21 2007-04-22 Danieli Off Mecc Processo e impianto per la produzione di nastro metallico.
DE102006047718A1 (de) * 2006-10-09 2008-04-17 Siemens Ag Verfahren zur Nachverfolgung des physikalischen Zustands eines Warmblechs oder Warmbands im Rahmen der Steuerung einer Grobblechwalzstraße zur Bearbeitung eines Warmblechs oder Warmbands
ITRM20070150A1 (it) * 2007-03-21 2008-09-22 Danieli Off Mecc Processo e impianto per la produzione di nastro metallico
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WO2004080628A1 (fr) 2004-09-23
DE10310357A1 (de) 2004-09-30
CN1758970A (zh) 2006-04-12

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