EP3099430B1 - Section de refroidissement avec refroidissement double à une valeur de consigne respective - Google Patents

Section de refroidissement avec refroidissement double à une valeur de consigne respective Download PDF

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Publication number
EP3099430B1
EP3099430B1 EP15700669.3A EP15700669A EP3099430B1 EP 3099430 B1 EP3099430 B1 EP 3099430B1 EP 15700669 A EP15700669 A EP 15700669A EP 3099430 B1 EP3099430 B1 EP 3099430B1
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EP
European Patent Office
Prior art keywords
cooling
control device
rolled product
phase
target
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EP15700669.3A
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German (de)
English (en)
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EP3099430A1 (fr
Inventor
Klaus Weinzierl
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Primetals Technologies Germany GmbH
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Primetals Technologies Germany GmbH
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Classifications

    • 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
    • B21B45/02—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 for lubricating, cooling, or cleaning
    • B21B45/0203—Cooling
    • 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
    • B21B37/76—Cooling control on the run-out table
    • C—CHEMISTRY; METALLURGY
    • C21—METALLURGY OF IRON
    • C21D—MODIFYING THE PHYSICAL STRUCTURE OF FERROUS METALS; GENERAL DEVICES FOR HEAT TREATMENT OF FERROUS OR NON-FERROUS METALS OR ALLOYS; MAKING METAL MALLEABLE, e.g. BY DECARBURISATION OR TEMPERING
    • C21D11/00—Process control or regulation for heat treatments
    • C21D11/005—Process control or regulation for heat treatments for cooling
    • 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
    • C—CHEMISTRY; METALLURGY
    • C21—METALLURGY OF IRON
    • C21D—MODIFYING THE PHYSICAL STRUCTURE OF FERROUS METALS; GENERAL DEVICES FOR HEAT TREATMENT OF FERROUS OR NON-FERROUS METALS OR ALLOYS; MAKING METAL MALLEABLE, e.g. BY DECARBURISATION OR TEMPERING
    • C21D8/00—Modifying the physical properties by deformation combined with, or followed by, heat treatment
    • C21D8/02—Modifying the physical properties by deformation combined with, or followed by, heat treatment during manufacturing of plates or strips
    • C21D8/04—Modifying the physical properties by deformation combined with, or followed by, heat treatment during manufacturing of plates or strips to produce plates or strips for deep-drawing
    • C21D8/0447—Modifying the physical properties by deformation combined with, or followed by, heat treatment during manufacturing of plates or strips to produce plates or strips for deep-drawing characterised by the heat treatment
    • C21D8/0463—Modifying the physical properties by deformation combined with, or followed by, heat treatment during manufacturing of plates or strips to produce plates or strips for deep-drawing characterised by the heat treatment following hot rolling

Definitions

  • the present invention further relates to a computer program comprising machine code which can be executed by a control device for a cooling line, wherein the processing of the machine code by the control device causes the control device to operate the cooling section according to such an operating method.
  • the present invention further relates to a control device for a cooling section, wherein the control device is programmed with such a computer program.
  • Steel is produced in a hot strip mill or heavy plate mill.
  • the material properties of the rolling stock are set by the cooling of the rolling stock taking place there. With the time course of the cooling process, the material properties achieved are fixed.
  • the temporal cooling process is often specified as a temporal temperature profile.
  • a distribution of an amount of water according to a predetermined cooling strategy in conjunction with a temperature at the end of the cooling section is given.
  • phase transformation can be controlled as such only suboptimal.
  • cooling is often not determinable in such a way that the phase transformation takes as short a time as possible. This is disadvantageous especially for relatively short cooling sections. If the cooling by the air surrounding the rolling stock and by the contact with the transport rollers of the cooling section provides a relatively high contribution to the overall cooling, it is also difficult to keep the material properties constant.
  • relatively long cooling sections however, it is known to work in the context of a two-stage cooling with an intermediate temperature measurement. In this case, the phase transformation can be done relatively quickly. However, this method reaches its limits when the phase transformation has already begun, because then the regulation no longer remains unambiguous, if the phase transformation at the end of the cooling section is not yet finished.
  • the object of the present invention is to provide possibilities by means of which an improved operation of the cooling section is possible.
  • the initial energy size and the target energy are temperatures. This procedure is possible in particular if any phase transformation at the end of the first cooling phase has not yet begun. In any case, it is possible that the initial energy size and energy energy are enthalpies. In this case, however, the target energy, although an enthalpy, is a different quantity from the target enthalpy.
  • control device determines the first setpoint coolant course in such a way that the respective section of the rolling stock is acted upon from the entry into the cooling section with the maximum possible amount of coolant, so that the first cooling phase ends as early as possible. Thereby the length of the section of the cooling section is minimized, which is required to achieve the target energy.
  • control device determines the second set coolant course such that the respective section of the rolling stock is subjected to the maximum possible coolant quantity until it leaves the cooling section, so that the third cooling phase begins as late as possible. This leaves as long a time as possible to carry out the phase transformation.
  • the rolling stock is transported by means of transport rollers through the cooling section.
  • the control device on the basis of the target energy or an Istenergy determined on the basis of the target energy and an actual first coolant flow and a chemical composition of the rolling stock a target roll cooling curve for in a corresponding with the second cooling phase region of the cooling section arranged transport rollers determined and cools these transport rollers according to the determined target roll cooling curve.
  • the desired roll cooling characteristic may be determined, for example, as a simple binary (on-off) function of the time or location of the rolling stock for a particular one of the transport rollers or a particular group of transport rollers. However, finer subdivisions with intermediate stages of cooling of the respective transport roller or group of transport rollers are also possible.
  • the desired roll cooling course will be determined such that the cooling of the transport rollers is turned off while the rolling passes through the corresponding area of the cooling section. In the remaining time, so while no rolling passes through the corresponding area of the cooling section, the transport rollers are actively cooled in this case.
  • the cooling can be switched off shortly before the rolling stock reaches the appropriate range.
  • Both approaches make it possible to selectively influence the temperature or the enthalpy of the sections of the rolling stock, at least to a limited extent.
  • the resulting adjustment range of the total cooling acting on the rolling stock can be further increased.
  • the quality of the cooling can be improved. This is especially true when the cooling of the transport rollers is realized as external cooling, so that the coolant is injected from the outside onto the transport rollers.
  • the transport rollers are only cooled if no rolling stock is located in the corresponding region of the cooling section.
  • this cooling can be realized in that the transport rollers are acted upon by those cooling devices with coolant, by means of which normally the rolling stock is acted upon with coolant.
  • own cooling devices may be provided for the transport rollers.
  • the control device preferably determines the enthalpy expected for the respective section in the second cooling phase on the basis of the initial energy quantity of the respective section of the rolling stock and the loading of the respective section of the rolling stock with an actual first coolant profile. This provides a particularly reliable value for the expected enthalpy.
  • control device carries out an operating method according to the invention - as explained above.
  • control device for a cooling section with the features of claim 10.
  • control device is programmed with a computer program according to the invention.
  • the object is further achieved by a cooling section for cooling a rolling stock with the features of claim 11.
  • the cooling section has a control device according to the invention which operates the cooling section according to an operating method according to the invention.
  • a rolling stock 1 is to be cooled in a cooling section 2.
  • the rolling stock 1 is made of metal.
  • the rolling stock 1 is a flat rolling stock, for example a metal strip, in particular a steel strip.
  • it can be a heavy plate (usually also made of steel).
  • the cooling section 2 is usually a rolling train - for example, a finishing train - Subordinate, in which the rolling stock 1 was hot rolled.
  • the rolling mill on several rolling stands. In FIG. 1 For the sake of clarity, only one rolling stand 3 - for example the last rolling stand 3 of the rolling train - is shown.
  • a temperature measuring station 4 is often arranged, at which a temperature T of the rolling stock 1 is detected.
  • the temperature measuring station 4 is referred to below as the distinction of other, later introduced temperature measuring stations as an input-side temperature measuring station 4.
  • the cooling section 2 has a plurality of transport rollers 5.
  • the rolling stock 1 is transported through the cooling section 2.
  • at least some of the transport rollers 5 are driven.
  • the transport rollers 5 in their entirety form a transport device, from which the rolling stock 1 is transported through the cooling section 2 at a transport speed v.
  • the cooling section 2 further comprises a plurality of front cooling devices 6, middle cooling devices 7 and rear cooling devices 8.
  • the rolling stock 1 (more precisely: the section of the rolling stock 1 which is currently in the effective range of the respective cooling device 6 to 8) is associated with a respective one Coolant amount of a liquid, mostly water-based coolant 9 acted upon.
  • the cooling section 2 also has a control device 10. Under control and control by the control device 10, the cooling section 2 is operated.
  • the control device 10 is usually programmed with a computer program 11.
  • the computer program 11 may be the Control device 10 are supplied for example via a data carrier 12, on which the computer program 11 is stored in machine-readable form (preferably in exclusively machine-readable form, in particular in electronic form).
  • the data carrier 12 can be configured as desired.
  • FIG. 1 in which the disk 12 is shown as a USB memory stick, is purely exemplary.
  • the computer program 11 comprises machine code 13, which can be processed by the control device 10.
  • the execution of the machine code 13 by the controller 10 causes the controller 10 to operate the refrigeration line 2 according to an operating method which will be described below in connection with FIG FIG. 2 is explained in more detail.
  • FIG. 2 takes the controller 9 initially in a step S1 information C on the chemical composition of the rolling stock 1 against.
  • the rolling stock 1 within the control device 9 is subdivided into a plurality of sections 14 in a step S2 (see FIG FIG. 3 ).
  • the sections 14 are only virtually present within the control device 9.
  • the sections 14 may be determined, for example, by a predetermined length, by a predetermined mass or by a time clock. Other subdivisions are possible.
  • control device 10 receives an initial energy quantity EA for a respective section 14.
  • the controller 10, the initial energy quantity EA is specified as such.
  • the control device 10 it is possible for the control device 10 to specify variables by means of which the control device 10 determines the initial energy quantity EA.
  • the control device 10 a temperature can be specified. If the temperature is high enough, it can be easily assumed that the respective section 14 of the rolling stock 1 is completely in the austenite phase. In this case, the enthalpy can be determined directly as the initial energy quantity EA by the temperature directly. It is also possible to specify the temperature and at least one phase portion and to determine the enthalpy based on the temperature and the at least one phase portion.
  • the initial energy quantity EA corresponds to a respective thermal energy which the respective section 14 has before passing through the cooling section 2.
  • the initial energy quantity EA may be a temperature, for example a temperature T of the corresponding portion 14 detected at the input-side temperature measuring station 4.
  • the initial energy quantity EA is an enthalpy.
  • the phase state of the corresponding section 14 may also be taken into account in the case of the initial energy quantity EA.
  • the control device 10 also receives a target energy E1 * and a target enthalpy E2 * for the corresponding section 14.
  • the desired energy E1 * is of the same type as the initial energy quantity EA.
  • the target energy E1 * is also a temperature.
  • the target energy E1 * is also an enthalpy.
  • the target energy E1 * is in any case a variable different from the target enthalpy E2 *.
  • the target enthalpy E2 * is always an enthalpy in the result.
  • the target energy E1 * indicates which energy I1 the corresponding section 14 of the rolling stock 1 at the end of a first cooling phase I (see FIG. 4 ) should have.
  • the desired enthalpy E2 * indicates which actual enthalpy E2 is the corresponding section 14 of the rolling stock 1 at the end of a third cooling phase III (see FIG FIG. 4 ) should have.
  • the first and third cooling phases I, III are according to FIG. 4 separated by a second cooling phase II. However, the second cooling phase II follows directly on the first cooling phase I. Similarly, the third cooling phase III follows directly on the second cooling II.
  • the control device 10 determines a first desired coolant flow path K1 *.
  • the first set coolant course K1 * indicates with which amount of coolant the respective section 14 of the rolling stock 1 is to be acted upon in the first cooling phase I.
  • the control device 10 determines the first setpoint coolant course K1 * based on the initial energy quantity EA and the target energy E1 *. The determination takes place in such a way that an energy I1 of the corresponding section 14 of the rolling stock 1 at the end of the first cooling phase I corresponds as well as possible to the target energy E1 *.
  • the determination of the first desired coolant flow path K1 * by the control device 10 can take place as required.
  • the control device 10 determines the first desired coolant flow path K1 * such that the respective section 14 of the rolling stock 1 is charged with the maximum possible coolant quantity from entering the cooling section 2 until the total required coolant quantity of the first cooling phase I is applied to the corresponding section 14 is. This ensures that the first cooling phase I ends as early as possible.
  • the appropriate procedure is in FIG. 4 indicated by an arrow A, which is intended to indicate the shift of the end of the first cooling phase I at the earliest possible time.
  • step S5 the control device 10 controls the front cooling devices 6 in accordance with the determined first target coolant flow path K1 *. The control takes place while the corresponding section 14 of the rolling stock 1 passes through the front cooling devices 6.
  • the control device 10 preferably also detects an actual activation state of the corresponding front cooling devices 6 and determines therefrom an actual first coolant flow K1.
  • the difference between the first desired coolant flow path K1 * and the actual first coolant flow K1 is that the first desired coolant flow K1 * corresponds to a desired control of the front cooling devices 6, whereas the actual first coolant flow K1 corresponds to the time profile of the application of an actual coolant amount to the corresponding section 14 of the rolling stock 1 by the front cooling means 6 corresponds.
  • the control device 10 determines an expected enthalpy EZ.
  • the expected enthalpy EZ is an enthalpy which the corresponding section 14 of the rolling stock 1 has in the second cooling phase II.
  • the expected enthalpy EZ can be assumed by the corresponding section 14 of the rolling stock 1 at the beginning, in a middle region or at the end of the second cooling phase II. It is possible for the control device 10 to determine the expected enthalpy EZ within the scope of the step S6 based on the initial energy quantity EA and the first setpoint coolant flow rate K1 *. However, the control device 10 preferably determines the expected enthalpy EZ as shown in FIG FIG. 2 on the basis of the initial energy quantity EA of the respective section 14 of the rolling stock 1 and the loading of the respective section 14 of the rolling stock 1 with the actual first coolant path K1.
  • the control device 10 determines a second desired coolant flow path K2 *.
  • the second desired coolant flow path K2 * indicates with which amount of coolant the respective section 14 of the rolling stock 1 in the third cooling phase III is to be acted upon.
  • the control device 10 determines the second desired coolant course K2 * based on the expected for the respective section 14 in the second cooling phase II enthalpy EZ and the target enthalpy E2 *. The determination takes place in such a way that an actual enthalpy E2 of the corresponding section 14 of the rolling stock 1 at the end of the third cooling phase III corresponds as well as possible to the desired enthalpy E2 *.
  • the determination of the second desired coolant flow K2 by the control device 10 can take place as required.
  • the appropriate procedure is in FIG. 4 indicated by an arrow B, which is intended to indicate the shift of the beginning of the third cooling phase III at the earliest possible date.
  • control device 10 controls the rear cooling devices 8 in accordance with the determined second desired coolant flow path K2 *.
  • the control takes place while the corresponding section 14 of the rolling stock 1 passes through the rear cooling devices 8.
  • the steps S3 to S8 are as shown in FIG. 2 executed for each section 14 of the rolling stock 1.
  • the portions 14 of the rolling stock 1 during the passage of the cooling section 2 first in the cooled first phase I by means of the front cooling means 6 of the cooling section 2 with the liquid coolant 9.
  • the sections 14 are not cooled with the liquid coolant 9.
  • the middle cooling devices 7 corresponding therewith are therefore not activated by the control device 10.
  • the second cooling phase II only the unavoidable heat release to the environment, in particular to the air and to the transport rollers 5.
  • the sections 14 by means of the rear cooling means 8 again with the liquid coolant. 9 cooled.
  • a (further) temperature measuring station 15 is arranged, on which also a temperature T of the rolling stock 1 is detected.
  • the temperature measuring station 15 is referred to below as the output temperature measuring station 15 for distinguishing the input-side temperature measuring station. If the output-side temperature measuring station 15 is present, the temperature T of the rolling stock 1 detected there is compared by the control device 10 with an expected temperature in a step S9.
  • the expected temperature can be determined by the control device 10, for example, based on the expected enthalpy EZ and the second desired coolant flow K2 * or - preferably - based on the expected enthalpy EZ and an actual second target coolant flow K2. Based on the comparison, for example, within the control device 10, a model of the cooling section 2 (not shown in the FIG) can be adapted.
  • a temperature measuring station 16 may be arranged, referred to below as a mean temperature measuring station 16 for distinguishing between the input and output temperature measuring stations 4, 15.
  • a detection of a temperature T of the rolling stock 1 can take place.
  • an adaptation of the model of the cooling section 2 can take place.
  • the target energy E1 * is preferably determined such that a phase transformation of the corresponding section 14 of the rolling stock 1 has not yet begun or has just begun and additionally a conversion rate of the metal at the corresponding temperature T of the corresponding section 14 of the rolling stock 1 is maximum.
  • the temperature T should therefore be kept as constant as possible in the second cooling phase II. At 100%, this constant is generally not possible, but it should be sought as far as possible.
  • the transport rollers 5 often have a cooling.
  • the cooling may be formed, for example, as internal cooling.
  • the transport rollers 5 - preferably in particular in the vicinity of the outer periphery of the transport rollers 5 - flows through a liquid cooling medium.
  • the cooling medium can be sprayed onto the transport rollers 5 from the outside by means of spray nozzles or the like (external cooling).
  • the liquid cooling medium in both cases is usually water or at least based on water.
  • step S11 the controller 10 determines a target roll cooling history KR *.
  • the desired roll cooling curve KR * gives a desired cooling for a region of the cooling section 2 corresponding to the second cooling phase II the transport rollers 5 arranged in this area.
  • the determination of step S11 is based on the target energy E1 * or the Istenergy E1.
  • the control device 10 additionally uses the information C about the chemical composition of the rolling stock 1.
  • step S12 the cooling of the corresponding transport rollers 5 takes place in accordance with the desired roll cooling curve KR *.
  • the cooling of the transport rollers 5 it is possible for the cooling of the transport rollers 5 to be maintained in this region of the cooling section 2.
  • the cooling of the transport rollers 5 is reduced in this area of the cooling section 2 or in extreme cases even completely switched off. This extreme case is - purely exemplary - in FIG. 6 shown.
  • step S13 the cooling of the transport rollers 5 in the region of the cooling section 2 corresponding to the second cooling phase II is reduced or simply switched off.
  • the adaptation of the cooling of the transport rollers 5 takes place only during the period during which the rolling stock 1 is in the corresponding area - that is the area corresponding to the second cooling phase II - the cooling section 2. If there is no rolling stock in this area, the transport rollers 5 are temporarily or permanently cooled.
  • the present invention has many advantages.
  • the material properties can be set reliably even for steels with a high carbon content.
  • the present invention is also applicable when the cooling section 2 is relatively short.
  • the material properties over the entire length of the rolling stock 1 can be set very evenly.
  • Also behind the cooling section 2 is given a good planarity. In the case of a strip as rolling stock 1 tape running problems and reel problems are avoided.
  • the conversion speed can be maximized.

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  • Engineering & Computer Science (AREA)
  • Chemical & Material Sciences (AREA)
  • Mechanical Engineering (AREA)
  • Materials Engineering (AREA)
  • Thermal Sciences (AREA)
  • Crystallography & Structural Chemistry (AREA)
  • Physics & Mathematics (AREA)
  • Metallurgy (AREA)
  • Organic Chemistry (AREA)
  • Control Of Metal Rolling (AREA)
  • Metal Rolling (AREA)
  • Control Of Heat Treatment Processes (AREA)
  • Heat Treatment Of Strip Materials And Filament Materials (AREA)

Claims (11)

  1. Procédé de fonctionnement pour une ligne de refroidissement (2) destiné à refroidir un produit à laminer (1) en métal, en particulier en acier,
    - dans lequel des sections (14) du produit à laminer (1) sont d'abord refroidies avec un réfrigérant fluide (9) au moyen d'appareils de refroidissement avant (6) de la ligne de refroidissement (2) pendant la traversée de la ligne de refroidissement (2) lors d'une première phase de refroidissement (I), sont ensuite refroidies lors d'une deuxième phase de refroidissement (II) succédant à la première phase de refroidissement (I), mais pas avec le réfrigérant fluide (9), et sont pour finir refroidies à nouveau avec le réfrigérant fluide (9) au moyen d'appareils de refroidissement arrière (8) de la ligne de refroidissement (2) lors d'une troisième phase de refroidissement (III) succédant à la deuxième phase de refroidissement (II),
    - dans lequel un appareil de commande (10) de la ligne de refroidissement (2) reçoit respectivement une valeur d'énergie initiale (EA) que présentent les sections (14) avant la traversée de la ligne de refroidissement (2),
    - dans lequel l'appareil de commande (10) reçoit en outre une énergie de consigne (E1*),
    - dans lequel l'appareil de commande (10) détermine, à l'aide de la valeur d'énergie initiale (EA) et de l'énergie de consigne (E1*), une première courbe de réfrigérant de consigne (K1*) conformément à laquelle la section (14) respective du produit à laminer (1) doit être alimentée lors de la première phase de refroidissement (I),
    - dans lequel l'appareil de commande (10) commande les appareils de refroidissement avant (6) en fonction de la première courbe de réfrigérant de consigne (K1*), pendant que la section (14) respective du produit à laminer (1) franchit les appareils de refroidissement avant (6),
    caractérisé en ce que,
    - l'appareil de commande (10) reçoit en outre une enthalpie de consigne (E2*),
    - l'appareil de commande (10) détermine, à l'aide d'une enthalpie (EZ) escomptée pour la section (14) respective lors de la deuxième phase de refroidissement (II) et de l'enthalpie de consigne (E2*), une deuxième courbe de réfrigérant de consigne (K2) conformément à laquelle doit être alimentée la section (14) respective du produit à laminer (1) lors de la troisième phase de refroidissement (III), et
    - l'appareil de commande (10) commande les appareils de refroidissement arrière (8) en fonction de la deuxième courbe de réfrigérant de consigne (K2*) pendant que la section (14) respective du produit à laminer (1) franchit les appareils de refroidissement arrière (8).
  2. Procédé de fonctionnement selon la revendication 1,
    caractérisé en ce que,
    la valeur d'énergie initiale (EA) et l'énergie de consigne (E1*) sont des enthalpies.
  3. Procédé de fonctionnement selon la revendication 1 ou 2,
    caractérisé en ce que,
    l'appareil de commande (10) détermine la première courbe de réfrigérant de consigne (K1*) de sorte que la section (14) respective du produit à laminer (1) est alimentée avec la quantité de réfrigérant la plus grande possible à partir de l'entrée dans la ligne de refroidissement (2), de sorte que la première phase de refroidissement (I) se termine aussi tôt que possible.
  4. Procédé de fonctionnement selon l'une quelconque des revendications 1, 2 ou 3,
    caractérisé en ce que,
    l'appareil de commande (10) détermine la deuxième courbe de réfrigérant de consigne (K2*) de sorte que la section (14) respective du produit à laminer (1) est alimentée avec la quantité de réfrigérant la plus grande possible jusqu'à sa sortie de la ligne de refroidissement (2), de sorte que la troisième phase de refroidissement (III) débute aussi tard que possible.
  5. Procédé de fonctionnement selon l'une quelconque des revendications 1 à 4,
    caractérisé en ce que,
    le produit à laminer (1) est transporté à travers la ligne de refroidissement (2) au moyen de rouleaux de transport (5) et l'unité de commande (10) détermine une courbe de refroidissement de rouleaux de consigne (KR*) pour des rouleaux de transport (5) agencés dans une région de la ligne de refroidissement (2) qui correspond à la deuxième phase de refroidissement (II) à l'aide de l'énergie de consigne (E1*), ou d'une énergie effective (E1) déterminée à l'aide de l'énergie de consigne (E1*) et d'une réelle première courbe de réfrigérant (K1), et d'une composition chimique du produit à laminer (1), et refroidit lesdits rouleaux de transport (5) en fonction de la courbe de refroidissement de rouleaux de consigne (KR*) déterminée.
  6. Procédé de fonctionnement selon l'une quelconque des revendications 1 à 4,
    caractérisé en ce que,
    le produit à laminer (1) est transporté à travers la ligne de refroidissement (2) au moyen de rouleaux de transport (5) et un refroidissement de rouleaux de transport (5) agencés dans une région de la ligne de refroidissement (2) qui correspond à la deuxième phase de refroidissement (II) est réduit ou interrompu.
  7. Procédé de fonctionnement selon la revendication 5 ou 6,
    caractérisé en ce que,
    les rouleaux de transport (5) ne sont refroidis que lorsqu'aucun produit à laminer ne se trouve dans la région de la ligne de refroidissement (2) qui correspond à la deuxième phase de refroidissement (II).
  8. Procédé de fonctionnement selon l'une quelconque des revendications précédentes,
    caractérisé en ce que,
    l'appareil de commande (10) détermine l'enthalpie (EZ) escomptée pour la section (14) respective lors de la deuxième phase de refroidissement (II) à l'aide de la valeur d'énergie initiale (EA) de la section (14) respective du produit à laminer (1) et de l'alimentation de la section (14) respective du produit à laminer (1) conformément à une réelle première courbe de réfrigérant (K1).
  9. Programme informatique qui comporte du code machine (13) qui peut être exécuté par un appareil de commande (10) pour une ligne de refroidissement (2),
    dans lequel l'exécution du code machine (13) par l'appareil de commande (10) amène l'appareil de commande (10) à faire fonctionner la ligne de refroidissement (2) conformément à un procédé de fonctionnement selon l'une quelconque des revendications précédentes.
  10. Appareil de commande pour une ligne de refroidissement (2), dans lequel l'appareil de commande est programmé avec un programme informatique (11) selon la revendication 9.
  11. Ligne de refroidissement destiné au refroidissement d'un produit à laminer (1),
    - dans laquelle la ligne de refroidissement présente des appareils de refroidissement avant et arrière (6, 8) au moyen desquels respectivement une section (14), se trouvant dans une région active de l'appareil de refroidissement (6, 8) respectif, du produit à laminer (1) peut être alimentée avec une quantité de réfrigérant respective,
    - dans laquelle la ligne de refroidissement présente un appareil de transport (5) grâce auquel le produit à laminer (1) peut être transporté à travers la ligne de laminage de sorte que les sections (14) du produit à laminer (1) parcourent successivement les régions actives des appareils de refroidissement (6, 8),
    - dans laquelle la ligne de refroidissement présente un appareil de commande (10) qui fait fonctionner la ligne de refroidissement conformément à un procédé de fonctionnement selon l'une quelconque des revendications 1 à 8.
EP15700669.3A 2014-01-28 2015-01-15 Section de refroidissement avec refroidissement double à une valeur de consigne respective Active EP3099430B1 (fr)

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EP14152872.9A EP2898963A1 (fr) 2014-01-28 2014-01-28 Section de refroidissement avec refroidissement double à une valeur de consigne respective
PCT/EP2015/050662 WO2015113825A1 (fr) 2014-01-28 2015-01-15 Section de refroidissement avec double refroidissement à une grandeur théorique respective

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EP3099430A1 EP3099430A1 (fr) 2016-12-07
EP3099430B1 true EP3099430B1 (fr) 2017-11-01

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EP15700669.3A Active EP3099430B1 (fr) 2014-01-28 2015-01-15 Section de refroidissement avec refroidissement double à une valeur de consigne respective

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EP (2) EP2898963A1 (fr)
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Publication number Priority date Publication date Assignee Title
DE102018205685A1 (de) * 2018-04-13 2019-10-17 Sms Group Gmbh Kühleinrichtung und Verfahren zu deren Betrieb
EP3599037A1 (fr) 2018-07-25 2020-01-29 Primetals Technologies Germany GmbH Section de refroidissement à réglage de flux de liquide de refroidissement à l'aide des pompes
DE102019104419A1 (de) * 2019-02-21 2020-08-27 Sms Group Gmbh Verfahren zur Einstellung verschiedener Kühlverläufe von Walzgut über der Bandbreite einer Kühlstrecke in einer Warmband- oder Grobblech-Straße
DE102019106730A1 (de) * 2019-03-18 2020-01-02 Primetals Technologies Austria GmbH Kühlung von flachem Walzgut ohne Nachlaufen des Headers

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WO2001047647A2 (fr) 1999-12-27 2001-07-05 Siemens Aktiengesellschaft Procede et dispositif pour refroidir une bande metallique laminee a chaud sortant d'une cage de laminoir
EP1244816B1 (fr) 1999-12-27 2004-03-10 Siemens Aktiengesellschaft Procede et commande et/ou de reglage de la section de refroidissement d'un train a feuillards a chaud destine au laminage de bandes metalliques et dispositif associe
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EP1732716B1 (fr) 2004-04-06 2007-09-19 Siemens Aktiengesellschaft Procede pour produire un metal
EP1970457A1 (fr) 2005-01-11 2008-09-17 Nippon Steel Corporation Procede de regulation du refroidissement d'une plaque d'acier
JP2009148809A (ja) 2007-12-21 2009-07-09 Hitachi Ltd 巻取り温度制御装置および制御方法
EP2244850B1 (fr) 2008-02-27 2013-01-30 Siemens Aktiengesellschaft Procédé de gestion d'une ligne de refroidissement qui refroidit un produit laminé avec refroidissement déclenché par la température jusqu'à une valeur finale d'enthalpie
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CN101745551B (zh) 2008-12-11 2011-11-23 宝山钢铁股份有限公司 一种热轧带钢自由冷却方法
JP2012000663A (ja) 2010-06-21 2012-01-05 Kobe Steel Ltd 圧延材の冷却制御方法、及びこの冷却制御方法が適用された連続圧延機
JP2012011448A (ja) 2010-07-05 2012-01-19 Kobe Steel Ltd 圧延材の冷却制御方法、及びこの冷却制御方法が適用された連続圧延機
EP2468905A1 (fr) 2010-12-22 2012-06-27 Siemens VAI Metals Technologies GmbH Tunnel de refroidissement doté d'un système de stockage à bande verticale intégré
JP2013000766A (ja) 2011-06-15 2013-01-07 Kobe Steel Ltd 冷却又は加熱される鋼板における変態率の算出方法、及び鋼板の変態率の制御方法
EP2540404A1 (fr) 2011-06-27 2013-01-02 Siemens Aktiengesellschaft Procédé de commande pour un laminoir à bandes à chaud
WO2013000677A1 (fr) 2011-06-27 2013-01-03 Siemens Aktiengesellschaft Procédé de commande pour un train à feuillards à chaud

Also Published As

Publication number Publication date
US20160346822A1 (en) 2016-12-01
EP3099430A1 (fr) 2016-12-07
US10413950B2 (en) 2019-09-17
EP2898963A1 (fr) 2015-07-29
WO2015113825A1 (fr) 2015-08-06
CN106163684A (zh) 2016-11-23
CN106163684B (zh) 2018-07-17

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