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EP4249141B1 - Procédé de fonctionnement d'un train de laminage - Google Patents

Procédé de fonctionnement d'un train de laminage

Info

Publication number
EP4249141B1
EP4249141B1 EP23161456.1A EP23161456A EP4249141B1 EP 4249141 B1 EP4249141 B1 EP 4249141B1 EP 23161456 A EP23161456 A EP 23161456A EP 4249141 B1 EP4249141 B1 EP 4249141B1
Authority
EP
European Patent Office
Prior art keywords
strip
speed
metal strip
rolling
operating method
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.)
Active
Application number
EP23161456.1A
Other languages
German (de)
English (en)
Other versions
EP4249141A1 (fr
Inventor
Philipp Raming
Jörn Sieghart
Marc Schneider
Kai GRYBEL
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.)
SMS Group GmbH
Original Assignee
SMS Group GmbH
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 SMS Group GmbH filed Critical SMS Group GmbH
Publication of EP4249141A1 publication Critical patent/EP4249141A1/fr
Application granted granted Critical
Publication of EP4249141B1 publication Critical patent/EP4249141B1/fr
Active legal-status Critical Current
Anticipated expiration legal-status Critical

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
    • B21B37/46—Roll speed or drive motor control
    • 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
    • B21B1/26—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 by hot-rolling, e.g. Steckel hot mill
    • 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
    • B21B1/28—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 by cold-rolling, e.g. Steckel cold mill
    • 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
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B21—MECHANICAL METAL-WORKING WITHOUT ESSENTIALLY REMOVING MATERIAL; PUNCHING METAL
    • B21B—ROLLING OF METAL
    • B21B2273/00—Path parameters
    • B21B2273/06—Threading
    • B21B2273/08—Threading-in or before threading-in
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B21—MECHANICAL METAL-WORKING WITHOUT ESSENTIALLY REMOVING MATERIAL; PUNCHING METAL
    • B21B—ROLLING OF METAL
    • B21B2273/00—Path parameters
    • B21B2273/06—Threading
    • B21B2273/10—Threading-out or after threading-out
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B21—MECHANICAL METAL-WORKING WITHOUT ESSENTIALLY REMOVING MATERIAL; PUNCHING METAL
    • B21B—ROLLING OF METAL
    • B21B2273/00—Path parameters
    • B21B2273/12—End of product
    • B21B2273/14—Front end or leading end
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B21—MECHANICAL METAL-WORKING WITHOUT ESSENTIALLY REMOVING MATERIAL; PUNCHING METAL
    • B21B—ROLLING OF METAL
    • B21B2273/00—Path parameters
    • B21B2273/12—End of product
    • B21B2273/16—Tail or rear end
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B21—MECHANICAL METAL-WORKING WITHOUT ESSENTIALLY REMOVING MATERIAL; PUNCHING METAL
    • B21B—ROLLING OF METAL
    • B21B2275/00—Mill drive parameters
    • B21B2275/02—Speed
    • B21B2275/04—Roll speed
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B21—MECHANICAL METAL-WORKING WITHOUT ESSENTIALLY REMOVING MATERIAL; PUNCHING METAL
    • B21B—ROLLING OF METAL
    • B21B2275/00—Mill drive parameters
    • B21B2275/02—Speed
    • B21B2275/06—Product speed

Definitions

  • the invention relates to an operating method for a rolling mill which has several rolling stands through which a metal strip passes, wherein the metal strip is successively threaded into at least some of the rolling stands and the metal strip passes through the rolling mill with stepwise thickness reduction from an initial thickness to a target thickness.
  • the invention relates in particular to the automation of a rolling mill, wherein the operating method can be used for the operation of cold rolling mills for steel in discontinuous and continuous operation, for the operation of combined pickling and cold rolling mill plants in discontinuous and continuous operation, for the operation of continuous and discontinuous hot rolling mills for steel, for the control of casting rolling mills, billet rolling mills, aluminum hot rolling mills, aluminum cold rolling mills, and for the control of reversing rolling mills with two or more rolling stands.
  • a generic operating method for a rolling mill is defined as follows: US 4 460 852 A known.
  • Rolling mills are typically operated automatically using multi-stage control systems. These control systems usually include controllers that receive setpoints from a higher-level system. The setpoints can be current values or target value trends. Level 2 systems generally calculate the setpoints using online optimization algorithms. They in turn rely on online models of the system to be controlled. These online models are data-based or mathematical-physical models.
  • the present invention relates in particular to the Level 1 and Level 2 automation of a plant for rolling metal strips.
  • the plant can be configured as a hot rolling mill, a cold rolling mill, or a profile rolling mill.
  • a Level 2 automation level within the meaning of the present invention is understood to be a process control level, which may, for example, comprise a higher-level process control technology, and which may be provided directly above a control level (Level 1 automation) for the direct control and regulation of the units of a rolling mill.
  • Level 1 automation a control level for the direct control and regulation of the units of a rolling mill.
  • metal pre-products or semi-finished products are usually rolled out into a finished strip and assembled into a coil.
  • slabs with initial thicknesses of 200-150 mm are heated to temperatures around 1250°C in a furnace. These are then rolled out in a roughing mill using roughing stands into strips with thicknesses of 25-45 mm and strip temperatures in the range of 950-1050°C. The strips are then fed into a finishing mill with finishing stands arranged in series and finished into strip with thicknesses of 1.25-25 mm and final rolling temperatures of 850-950°C.
  • the state of the art involves threading the semi-finished product/pre-product in and/or out at a constant speed relative to the exit speed of the rolling mill. It is common practice to operate the individual rolling stands at a constant speed. For hot rolling mills, this is particularly important with regard to the temperature profile of the metal strip. It is useful if, after threading the tape head, it should have a predetermined target temperature starting from the oven temperature.
  • the speed of the strip foot or head is determined by the ratio of the thickness reduction from the initial thickness before the respective rolling stand to the thickness after the respective rolling stand.
  • the speed increase of the strip head is proportional to the thickness reduction of the metal strip within the rolling stand.
  • the invention is based on the objective of providing an operating method for a rolling mill that enables an increase in the mill's productivity without changing its mechanical configuration.
  • the operating method should enable an increase in production through appropriate adjustments to the process control.
  • an operating method for a rolling mill which has several rolling stands through which a metal strip passes, wherein the metal strip is successively threaded into at least some of the rolling stands and the metal strip passes through the rolling mill with stepwise thickness reduction from an initial thickness to a target thickness
  • the method comprises speed control of the individual rolling stands by means of a higher-level process control and wherein at least the entry speed of the metal strip into the rolling mill and the speed of the rolling stands when threading a strip head and/or a strip foot or a planned section change of the metal strip into the rolling stands is controlled according to a speed specification for the metal strip or for parts of the metal strip such that the speed of the strip head for each rolling stand has a maximum possible threading speed before a first rolling stand and between each pair of rolling stands, and that a maximum possible threading speed before a first rolling stand and/or between two rolling stands is calculated as the speed specification, under the condition that a The calculated and/or specified maximum rolling speed is not exceeded after completion of the threading process,
  • a section change i.e. a planned change in the geometry of the metal strip, can result, for example, from a product change during continuous rolling.
  • the rolling stands are operated at a constant speed during the threading and/or passing of the metal strip. This results in a constant mass flow rate of the metal strip, due to the fact that the strip head is accelerated proportionally to the thickness reduction in the respective rolling stand.
  • the speed of all rolling stands is determined by a constant target speed of the strip head behind the last rolling stand.
  • the operating method according to the invention is characterized in particular by the fact that the speed of the individual rolling stands is not constant, Rather, the speed of the individual rolling stands is regulated according to a speed target calculated in a higher-level process control system, preferably in Level 2 automation. This results in a "speed cascade" or speed profile for the metal strip through the entry and/or threading process.
  • This approach has the advantage that the threading speed of the metal strip into the rolling stands can be significantly increased, resulting in considerable time savings and thus also an increase in productivity.
  • a maximum possible threading speed is calculated as a speed specification in front of a first rolling stand and/or between two rolling stands, under the condition that a calculated and/or specified maximum rolling speed for the entire rolling process is not exceeded after completion of the threading process.
  • Speed control such that the speed of the tape head, tape foot or tape transition in the respective intermediate stand area is no longer calculated in proportion to the total thickness reduction, but is generally as fast as possible without exceeding a calculated exit speed, has the advantage that a time saving of up to approximately 30% can be achieved during the threading process.
  • the calculation of the speed requirement for the entry and/or threading of the metal strip is preferably carried out taking into account the technical limits and boundary conditions of the rolling mill's equipment, as well as given process parameters for the rolling process.
  • Technical limits and boundary conditions of the rolling mill's equipment include, for example, the maximum power of the drives for the rolling stands or their maximum possible penetrating force.
  • Specified process parameters include the temperature of the metal strip, the temperature profile of the metal strip along its length and/or width, the maximum possible and/or permissible strip tension, the flatness of the metal strip, the applicable forming energy, the strip geometry, in particular the strip preparation, the enthalpy conservation, the specific enthalpy, the surface quality of the finished metal strip, the microstructure and the yield strength of the metal strip.
  • the speed control can comprise a data-based and/or rule-based speed specification, for example, material- and/or dimension-related.
  • a data-based specification within the meaning of the present invention means that, through an automated analysis of a large data set, the optimal speed for the strip head is determined over the entire path during threading and/or passing through the rolling mill, and the individual rolling stands are controlled accordingly via Level 1 automation.
  • a rule-based specification of the optimal speed for example material- and/or dimension-related, can also be provided.
  • a distance monitoring system is provided between the strip head and the strip foot of a metal strip traveling downstream through the rolling mill, with the speed control taking a minimum distance to the strip foot of the downstream metal strip into account as a boundary condition. This is advantageous and sensible to ensure that the rolled strip does not run into the advancing strip foot.
  • the method includes temperature control of the tape head.
  • temperature control can, for example, be based on a target temperature of the tape head.
  • the temperature profile of the metal tape is particularly dependent on its thickness. With thinner metal tapes, a reference temperature at the tape head can only be achieved through the operating method or control system according to the invention.
  • the temperature of the pre-strip can be regulated, for example, by multiple uses of a descaling device and/or via temperature control and/or regulation of a furnace upstream of the pre-strip and/or via a thickness profile introduced into the metal bath in the pre-strip.
  • the coolant volume flow of at least one intermediate stand cooling system is controlled and/or regulated depending on the speed of at least one rolling stand.
  • the winding speed of at least one reel for winding the finished rolled metal strip is controlled and/or regulated as a function of a speed cascade of the metal strip over several rolling stands.
  • Figure 1 shows a schematic representation of a continuous casting plant with a continuous casting plant 1, followed by a roughing mill 2 and a finishing mill 3.
  • the roughing mill 2 comprises a first furnace 4, two pre-stands 5, a second furnace 6, and a shear 7.
  • the finishing line 3 includes a scale washer 8 and a large number of rolling stands F1 to Fn, which are arranged one behind the other in a rolling line.
  • a casting strand produced with the continuous casting plant 1 is pre-rolled, for example, into a metal strip in the form of a thin slab by means of the pre-setting stands 5, which, after descaling in the descaler 8, is threaded into the rolling stands F1 to Fn of the finishing mill 3.
  • the rolling stands F1 to Fn arranged in the finishing mill 3 are each controlled by a higher-level process control system (not shown), wherein the process control system comprises a Level 2 automation level and a Level 1 automation level arranged below it for the direct control and regulation of the rolling stands F1 to Fn.
  • the operating method according to the invention comprises a speed control and speed regulation of the rolling stands F1 to Fn such that the entry speed of the metal strip, in the present case the thin slabs, into the rolling stands F1 to Fn is regulated during threading so that the speed of the strip head for each rolling stand F1 to Fn has a maximum possible threading speed in front of a first rolling stand F1 and in each case between two rolling stands F1 to Fn, taking into account the respective technical limits and boundary conditions of the rolling stands F1 to Fn and taking into account the fact that a calculated and/or predetermined maximum rolling speed is not exceeded after completion of the threading process.
  • the invention is nevertheless to be understood as relating to the speed of the strip foot, for example in a reversing operation of the rolling mill, and/or to the speed of a section change, i.e. a change in product geometry due to a planned product change.
  • FIG. 2 A schematic representation of the control concept according to the operating method according to the invention is shown in Figure 2
  • the hot-rolled strip/roughing strip or slab is initially fed into the first rolling stand F1 at the maximum possible speed.
  • the first rolling stand F1 is operated at maximum rotational speed.
  • the limit of the entry speed of the metal strip into the first rolling stand F1 is determined by the maximum speed of the descaling process within the descaler 8, the maximum speed of the roller table, and the safety distance to the preceding metal strip.
  • the maximum speed of the first rolling stand F1 is determined by its engine power and the maximum penetrating stroke. This results in an initial speed V0 before the first rolling stand F1.
  • the rotational speed of the rolling stand may be higher than V0.
  • the rolling stand F1 Only at the point of penetration is the rolling stand F1 slowed down and the strip head brought up to the appropriate speed.
  • the speed of the rolling stands F1 and F2 is increased as much as possible. If an increase is not possible, the resulting speed of the strip head in the stand section between the rolling stand F1 and the rolling stand F2 is equal to the speed resulting from the reduction in thickness of the metal strip.
  • the mass flow or volume flow through all rolling stands depends on the speed of the strip head, which according to the invention can be specified according to a higher-level control objective and is variable.
  • the speed of the strip head (V ⁇ sub>striphead ⁇ /sub>) and/or the speed of the strip foot (V ⁇ sub>stripfoot ⁇ /sub>) and/or the speed of a section change (V ⁇ sub>productchange ⁇ /sub>) can be freely specified to achieve a higher-level control objective, in the simplest case maximization.
  • the technical boundary conditions and the specified process conditions of the rolling process must be observed.
  • V ⁇ sub>strip head ⁇ /sub> V ⁇ sub>strip foot ⁇ /sub>
  • V ⁇ sub> product change ⁇ /sub> should ensure the correct mass flow control of the interaction between the various rolling stands at all times. This is achieved by precisely feeding the higher-level speed setting into the so-called speed cascade (see). Figure 2 , [Lim Fn])
  • the function Min (A; B) is a function that returns the smaller value from both values A and B.
  • the speed of the strip head determined as described above, is compared with a given calculated final speed of the metal strip behind the last rolling stand, Fn. The minimum of these two values is then calculated. selected so that the metal band does not exceed the final speed intended after the threading process.
  • the operating method according to the invention comprises a control of the temperature of the metal strip, in particular of the strip head.
  • the Figure 3 Figure 1 shows two diagrams plotting the temperature of the metal strip, the mass flow rate (or volume flow rate) of the material, and the coiling speed along the length of the rolling mill.
  • the left diagram shows the relevant values for a metal strip thickness of less than 2 mm
  • the right diagram shows the relevant values for a metal strip thickness of more than 2 mm.
  • the diagrams illustrate the temperature and speed profiles for the operating process according to the invention.
  • the line representing the mass flow initially illustrates the so-called speed cascade, which, for example, the head of the metal strip undergoes as it passes through the rolling stands F1 to F6.
  • the speed profile decreases slightly in steps from rolling stand F1 to rolling stand Fn until a constant final speed is reached, and then increases again in steps as the metal strip is wound onto the coil.
  • the reference temperature is the temperature targeted to achieve specific microstructure properties of the finished product.
  • the water consumption of an intermediate stand cooling system along the length of the rolling mill is also shown.
  • the rolled material reaches the reference temperature at a temperature measuring point downstream of the rolling stand F6.
  • this temperature drops again immediately downstream of the roughing mill due to a relatively high cooling rate of the rolled material.
  • An intermediate stand cooling system operates with a minimal... The water quantity has been reached.
  • the increase in water consumption towards the end of the rolling process is due to a cooling section provided there.
  • the strip head remains at the intended reference temperature behind the last rolling stand F6 or behind a temperature measuring point. This results primarily from the increased threading speed into the rolling stands F1 to Fn. Since the cooling of the strip head does not decrease as rapidly due to the high threading speed and higher heat capacity, a larger quantity of water is initially required for intermediate stand cooling, but this quantity then decreases progressively.

Landscapes

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

Claims (11)

  1. Procédé d'exploitation pour un train de laminage qui présente plusieurs cages de laminage (F1-Fn) à travers lesquelles doit passer une bande métallique, la bande métallique étant engagée successivement dans au moins certaines des cages de laminage (F1-Fn) et la bande métallique traversant le train de laminage avec une réduction d'épaisseur progressive d'une épaisseur initiale à une épaisseur cible, le procédé comprenant une régulation de la vitesse des cages de laminage (F1-Fn) individuelles au moyen d'une commande de processus de niveau supérieur, caractérisé
    en ce qu'au moins la vitesse d'entrée de la bande métallique dans le train de laminage et la vitesse des cages de laminage (F1-Fn) lors de l'engagement d'une tête de bande et/ou d'une queue de bande ou d'un changement de section planifié de la bande métallique dans les cages de laminage (F1-Fn) sont régulées conformément à une consigne de vitesse pour la bande métallique ou pour des parties de la bande métallique de telle sorte que la vitesse de la tête de bande présente, pour chaque cage de laminage F1 à Fn, une vitesse d'engagement maximale possible en amont d'une première cage de laminage F1 et respectivement entre deux cages de laminage F1 à Fn ; et
    en ce qu'une vitesse d'engagement maximale possible en amont d'une première cage de laminage (F1) et/ou entre deux cages de laminage (F1-Fn) est calculée en tant que consigne de vitesse, à la condition qu'une vitesse de laminage maximale calculée et/ou prédéfinie ne soit pas dépassée après l'achèvement du processus d'engagement,
    le calcul de la consigne de vitesse pour l'entrée et/ou l'engagement de la bande métallique s'effectuant en tenant compte des limites techniques et des conditions aux limites des ensembles du train de laminage et en tenant compte de grandeurs de processus prédéfinies pour le processus de laminage.
  2. Procédé d'exploitation selon la revendication 1, caractérisé en ce que les grandeurs de processus prédéfinies sont choisies dans un groupe de grandeurs de processus comprenant la température de la bande métallique, le profil de température sur la longueur et/ou la largeur de la bande métallique, la traction de bande maximale possible et/ou admissible, la planéité, l'énergie de déformation, la géométrie de la bande, en particulier la largeur de la bande, la conservation de l'enthalpie, l'enthalpie spécifique, la qualité de surface de la bande métallique, la microstructure, la limite d'élasticité.
  3. Procédé d'exploitation selon l'une des revendications 1 ou 2, caractérisé en ce que la vitesse de la bande métallique lors de l'engagement sur toutes les cages de laminage (F1-Fn) est paramétrable de manière variable dans la commande de processus.
  4. Procédé d'exploitation selon l'une des revendications 1 à 3, caractérisé en ce que la régulation de vitesse comprend une consigne de vitesse basée sur des données et/ou basée sur des règles.
  5. Procédé d'exploitation selon l'une des revendications 1 à 4, en tant que procédé d'exploitation pour un train de laminage à chaud, dans lequel une bande laminée à chaud en tant que bande ébauchée provenant d'un train dégrossisseur (2) est engagée.
  6. Procédé d'exploitation selon l'une des revendications 1 à 5, caractérisé en ce que le procédé comprend une surveillance de la distance de la tête de bande par rapport à une queue de bande d'une bande métallique traversant le train de laminage en aval, la régulation de vitesse tenant compte d'une distance minimale par rapport à la queue de bande de la bande métallique traversant le train de laminage en aval en tant que condition aux limites du calcul de la consigne de vitesse.
  7. Procédé d'exploitation selon l'une des revendications 1 à 6, caractérisé en ce que le procédé comprend une commande de la température de la bande métallique, en particulier de la tête de bande.
  8. Procédé d'exploitation selon l'une des revendications 4 à 7, caractérisé en ce que la température de la bande ébauchée est commandée en fonction d'une température de consigne de la tête de bande en aval du train finisseur.
  9. Procédé d'exploitation selon la revendication 7, caractérisé en ce que la température de la bande ébauchée est régulée par une utilisation multiple d'un dispositif de décalaminage et/ou via une commande et/ou une régulation de température d'un four placé en amont du train dégrossisseur et/ou via un profil d'épaisseur appliqué à la bande métallique dans le train dégrossisseur.
  10. Procédé d'exploitation selon l'une des revendications 1 à 9, caractérisé en ce que le débit volumique de réfrigérant d'au moins un refroidissement inter-cages est commandé et/ou régulé en fonction de la vitesse d'au moins une cage de laminage.
  11. Procédé d'exploitation selon l'une des revendications 1 à 10, caractérisé en ce que la vitesse d'enroulement d'au moins une bobineuse pour l'enroulement de la bande métallique laminée à l'état fini est commandée et/ou régulée en fonction d'une cascade de vitesses de la bande métallique sur plusieurs cages de laminage.
EP23161456.1A 2022-03-25 2023-03-13 Procédé de fonctionnement d'un train de laminage Active EP4249141B1 (fr)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
DE102022202987.9A DE102022202987A1 (de) 2022-03-25 2022-03-25 Betriebsverfahren für eine Walzstraße

Publications (2)

Publication Number Publication Date
EP4249141A1 EP4249141A1 (fr) 2023-09-27
EP4249141B1 true EP4249141B1 (fr) 2025-12-17

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Family Applications (1)

Application Number Title Priority Date Filing Date
EP23161456.1A Active EP4249141B1 (fr) 2022-03-25 2023-03-13 Procédé de fonctionnement d'un train de laminage

Country Status (2)

Country Link
EP (1) EP4249141B1 (fr)
DE (1) DE102022202987A1 (fr)

Family Cites Families (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS6016850B2 (ja) * 1981-02-06 1985-04-27 住友金属工業株式会社 コ−ルドタンデムミルの圧延速度揃速方法
DE19726586A1 (de) * 1997-06-23 1999-01-07 Siemens Ag Verfahren und Einrichtung zur Verringerung bzw. Kompensation von Drehzahleinbrüchen beim Einfädeln eines Walzgutes in ein Walzgerüst
US10799924B2 (en) * 2017-08-01 2020-10-13 Sms Group Gmbh Mass flow regulation in roller devices

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Publication number Publication date
EP4249141A1 (fr) 2023-09-27
DE102022202987A1 (de) 2023-09-28

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