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WO2022106707A1 - Procédé de correction des propriétés d'une bande laminée à chaud ayant une composition chimique spécifique dans un laminoir à chaud - Google Patents

Procédé de correction des propriétés d'une bande laminée à chaud ayant une composition chimique spécifique dans un laminoir à chaud Download PDF

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Publication number
WO2022106707A1
WO2022106707A1 PCT/EP2021/082563 EP2021082563W WO2022106707A1 WO 2022106707 A1 WO2022106707 A1 WO 2022106707A1 EP 2021082563 W EP2021082563 W EP 2021082563W WO 2022106707 A1 WO2022106707 A1 WO 2022106707A1
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WO
WIPO (PCT)
Prior art keywords
hot
hot strip
strip
rolling
grain size
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.)
Ceased
Application number
PCT/EP2021/082563
Other languages
German (de)
English (en)
Inventor
Dietmar HOPPE
Thomas Haschke
August Sprock
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
Priority to EP21823198.3A priority Critical patent/EP4247574A1/fr
Publication of WO2022106707A1 publication Critical patent/WO2022106707A1/fr
Anticipated expiration legal-status Critical
Ceased legal-status Critical Current

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Classifications

    • 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
    • C21D8/0205—Modifying the physical properties by deformation combined with, or followed by, heat treatment during manufacturing of plates or strips of ferrous alloys
    • 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
    • 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
    • C21D8/0221—Modifying the physical properties by deformation combined with, or followed by, heat treatment during manufacturing of plates or strips characterised by the working steps
    • C21D8/0226—Hot rolling
    • 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
    • C21D8/0247—Modifying the physical properties by deformation combined with, or followed by, heat treatment during manufacturing of plates or strips characterised by the heat treatment
    • C21D8/0263—Modifying the physical properties by deformation combined with, or followed by, heat treatment during manufacturing of plates or strips characterised by the heat treatment following hot rolling
    • 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
    • C21D9/00—Heat treatment, e.g. annealing, hardening, quenching or tempering, adapted for particular articles; Furnaces therefor
    • C21D9/46—Heat treatment, e.g. annealing, hardening, quenching or tempering, adapted for particular articles; Furnaces therefor for sheet metals

Definitions

  • the invention relates to a method for adjusting the properties, in particular the grain size and/or the recrystallization behavior, of a hot strip with a specific chemical composition in a hot strip mill.
  • the setting of the grain size in the hot strip is not limited to one unit of the rolling mill, usually the cooling, but is set based on a temperature measurement.
  • the temperature is measured as an indicator of a target grain size, it is necessary to convert the measured temperature into an actual grain size. This conversion is related to an overall view of a manufacturing process leading to higher inaccuracies in manufacturing.
  • the object of the invention is therefore to further develop a known method for adjusting the properties of a hot strip, in particular the grain size and/or the recrystallization behavior in a hot strip mill, such that specified target values for the finish-rolled hot strip are achieved with smaller tolerances.
  • the object of the invention is achieved by a method with the method steps of claim 1. Accordingly, the method is characterized as follows: The grain size, the recrystallization behavior and/or the microstructure or at least individual microstructure components are continuously determined during hot rolling.
  • a process model connected to a higher-level control or regulation of the hot strip mill determines at least one hot strip deviation (x) between the continuously determined actual value and the specified target value for at least one property of the hot strip and/or at least one rolling deviation between the measured during hot rolling Actual value and the specified target value for hot rolling.
  • the process model determines new target values for hot rolling based on the hot strip deviation and/or the rolling deviation and taking into account the material and plant-technical possibilities and transfers these to the control or regulation of the units involved in hot rolling.
  • hot strip mill includes at least one or all of the following units: a furnace in front of a roughing stand, roughing stand, furnace and/or rapid heating between the roughing stand and a first finishing rolling stand, finishing rolling stands in a finishing rolling train, a cooling section, a coiler.
  • mill stand can mean either a roughing mill stand or a finishing mill stand.
  • hot strip means a strip section or a complete strip within a hot strip mill. Accordingly, hot strip can be in particular a slab before entering a roughing stand, a pre-strip after leaving the roughing stand, a hot strip within the finishing train or a finished strip after leaving the last finishing stand.
  • a property of the hot strip can refer to the strip section or the complete strip. However, a property can also refer to a specific position or measuring point or specified point within a hot strip mill at which the hot strip has or should have the property.
  • the "property of the hot strip” is, for example: the chemical analysis or composition, the recrystallization behavior, the dimensions, the strength, the microstructure and/or the grain size of the hot strip.
  • devices can mean either hot strip deviations between continuously determined actual values and specified target values for the properties of the hot strip or rolling deviations between measured actual values and the specified target values for hot rolling. Which of the possible meanings is meant in each case results from the context.
  • the claimed continuous measurement of the grain size enables conclusions to be drawn about the mechanical properties of the hot strip at the time of measurement and the development of the mechanical properties during further hot forming, heat treatment and/or cooling of the hot strip that is carried out as planned.
  • the actual values, in particular mechanical properties, of the hot strip can be realized with smaller deviations from the target value compared to the deviations from the target value according to the prior art, since the later actual values of the hot strip are already known during production of the hot strip can be predicted through continuous grain size determination and possible deviations can be corrected.
  • a continuous measurement within the meaning of the invention generates sufficient measured values over the length and/or width of the hot strip.
  • At least two property values are determined per strip, more preferably a property determination at a frequency of f ⁇ 1/s during hot rolling in the longitudinal extent of the strip. Transversely to the rolling direction, it is preferred if at least 2 property values, more preferably two property values, are determined per meter of strip width.
  • new modified target values for hot rolling are derived, taking into account the material and plant-related possibilities. These are transferred to the open-loop or closed-loop control, in particular to a higher-level process control system, of the aggregates involved in the hot-rolling as new setpoint values for the hot-rolling. There is still the option of manually influencing the process using a process control system assigned to the hot strip mill.
  • At least the target values, actual values, chemical analysis and the properties such as the grain size achieved, the recrystallization behavior and/or the microstructure or at least individual microstructure components are stored in a database.
  • the task of the process model connected to the higher-level control or regulation is to map cross-aggregate interactions between the target specifications on the one hand and the properties of the hot strip on the other. In the sense of the invention, the process model can also be integrated into the open-loop or closed-loop control.
  • target specifications for aggregates can be used as control parameters and influenced in such a way that the target specification for the property of the hot strip is achieved with smaller deviations from the target value.
  • a known chemical composition within the meaning of the invention means that the chemical composition before and/or during the hot forming is sufficiently determined that it can be used to determine the target values for the hot rolling. Depending on the material, it may be sufficient to determine the content of just one or a few chemical elements that determine its properties.
  • a hot strip mill in particular plant types such as a hot wide strip mill, CSP/endless plant, Steckel mill or sheet metal mill, within the meaning of the invention includes all plants for hot forming a preliminary product into a hot strip. Plants are, for example, furnaces, roll stands, cooling devices, shears, winding devices.
  • the storage of target or actual data in a database should be understood in the sense of the invention as a structured storage of the data in a storage medium. This is intended to enable and simplify subsequent use of the stored data. For example, this can be in the form of an SQL database with reference to points in time or production units.
  • the grain size is determined by means of a laser-ultrasonic method or that the grain size is determined by means of an X-ray method. Both methods have a sufficiently high measurement accuracy or measurement frequency, i.e. number of individual measurements on a hot strip, so that the measured values can be used to control or regulate the rolling process.
  • the property of the hot strip in the rolling train is ideally determined according to claim 4. Particularly pronounced structural changes occur after hot rolling and/or after the cooling section.
  • the respective measuring point can be arranged at different points in the rolling train. If several measuring points are used, they can redundantly secure a single measuring point in the rolling train with regard to the measured value or record a measured value at different locations in the rolling train. By arranging the measuring points accordingly, they can be included in the control or regulation.
  • the continuous determination of the properties, in particular the grain size, the recrystallization behavior and/or the microstructure or at least individual microstructure components takes place after the last acceptance pass and before the further processing or depositing of the hot strip.
  • grain growth and/or grain refinement can take place in the hot strip mill until cooling begins.
  • this growth is limited by the cooling of the hot strip and can be well described by a process model, for example a statistical or analytical model based on grain sizes measured on a large number of hot strips.
  • the process model preferably takes into account the static, dynamic and/or metadynamic recrystallization during the hot rolling and derives limits for the target values for the hot rolling from this.
  • limits of the target values are included in the process control of the hot strip mill and enable a more precise determination of the target values for hot rolling, in particular the presetting of the rolling mill. Furthermore, these limits can be taken into account in production planning.
  • the process model takes into account the cooling intensity and/or a temperature distribution of the hot strip before coiling and determines target values for the water quantity and water distribution used during hot rolling.
  • the structure can be influenced in different areas of the hot strip by specifically influencing the cooling or the temperature profile. As a result, material properties can be adjusted more evenly across the hot strip cross-section and/or known deviations from target values can be corrected.
  • the grain size, preferably austenite grain size, ferrite grain size and/or the microstructure or at least individual microstructure components be determined before the final cooling section and that the recrystallization behavior of the hot strip, preferably the phase transformation, for example the ferrite formation from the austenite, during cooling of the hot strip; and from this the mechanical properties of the hot strip can be determined. If the derived recrystallization behavior and/or the mechanical properties deviate from a target value, the target values for hot rolling, preferably the pass reduction, the rolling speed, the temperature, are adjusted by the cooling intensity, preferably by the amount of water and/or the water pressure, to the target values of the hot strip.
  • the object of the invention is achieved by the features of independent claim 9 .
  • the target values for hot rolling before the start of forming are derived from an existing database with corresponding target and actual values, chemical analysis, grain size achieved, microstructure, recrystallization behavior and the properties of the hot strip.
  • the process model takes into account the static, dynamic and/or metadynamic recrystallization during hot rolling and derives limits for the target values for hot rolling from this.
  • Sub-process models depict parts or entire units of the hot strip mill. these can have different characteristics and complexities. For example, heating equipment can be modeled using energy and material balances, or rolling stands can be simulated using FEM models. These are to be selected depending on the computing power available and the degree of digitization of the hot strip mill.
  • the simulation of a hot strip mill in a comprehensive model makes it possible to adjust the target values of the individual units using different optimization methods, depending on the optimization goal, in order to achieve a desired property of the hot strip or to optimize a hot strip taking into account external specifications, e.g. B. operator input to generate.
  • the determination of such target values in advance of the production of a hot strip reduces the run-in time of the hot strip mill for a special product and thus reduces costs.
  • the target values are optimized with regard to the chemical analysis of the hot strip or that the target values are optimized with regard to the grain size, preferably the austenite grain size, of the hot strip.
  • the chemical analysis of the hot strip describes the basic property ranges of the material of the hot strip. Depending on the target values, desired properties can be created or suppressed within this range.
  • the austenite grain size is a preferred property in a hot strip and can be used in setpoint optimization to more precisely control or regulate the hot strip mill with regard to the properties of the hot strip.
  • the desired values can preferably be optimized with regard to the ferrite grain size of the hot strip. This optimization focuses in particular on materials that have a property-determining ferrite content. This content can be specifically adjusted by optimizing the target values.
  • a further preferred possibility according to claim 13 is that the target values are optimized with regard to the possible system parameters.
  • it will Process used to determine or optimize design parameters, preferably parameters for presetting a hot strip mill.
  • a hot strip with defined properties is to be produced taking into account specified optimization goals, such as throughput, energy consumption, cooling water volume, etc.
  • the method determines the target values for hot rolling.
  • the target values can be optimized for a wide variety of hot-rolled strip microstructures that are accessible to modeling based on continuous grain size measurement. This also applies analogously to the control and regulation of the target values for hot rolling.
  • Fig.1a Exemplary example of a hot strip mill
  • Fig. 4 Diagram of the temperature profile and the profile of properties, in particular the profile of the grain size, for the hot strip.
  • FIG. 1a shows an example of a hot strip mill for producing a hot strip from a slab in the conveying direction F.
  • a slab is brought to the required forming temperature in a reheating furnace.
  • the roughing train is designed with two roll stands.
  • the pre-strip optionally runs through a further temperature setting or a holding oven.
  • the pre-strip is then formed into a hot strip in the finishing train with five rolling stands. After the last acceptance pass, the hot strip is cooled to a specific coiling temperature in a cooling section. At the end of the hot strip mill, the hot strip is wound into a bundle or coil using a coiler.
  • FIG. 1b shows a section of the hot strip mill in connection with the method according to the invention.
  • FIG. 1b shows the last aggregates of the hot strip train in the conveying direction F.
  • the two roll stands shown are the last stands of the finishing train, between which an interstand cooling system is arranged.
  • the cooling of the hot strip follows the finishing train. After cooling, the hot strip is wound up on the coiler to form a coil.
  • the cooling is carried out with a subsequent laminar cooling section and is particularly suitable for setting special grain sizes and microstructures.
  • a measuring device here a laser-ultrasonic measurement, for determining the grain size of the hot strip.
  • One or more further measuring devices can also optionally be arranged upstream in the hot strip mill.
  • the units shown or the control and regulation devices of the units are usually connected to external data processing and a higher-level control and regulation device.
  • the respective aggregates contain a common control and regulation device for maintaining specified target values and can, for example, transfer target values or actual values directly to external data processing or transmit them with the help of the superordinate control and regulation device.
  • External data processing can provide the stored data to the higher-level control and regulation device.
  • new modified target values are calculated by the higher-level control and regulation device.
  • the control and regulation device uses a process model connected to it.
  • These new modified setpoints can change e.g. B. refer to the dimensions, geometry, strength, grain size of the rolling stock itself, but also to process parameters of the hot rolling mill such as pass reduction, rolling speed, intermediate thicknesses, cooling settings and / or intermediate and / or final temperatures. They relate to the entire hot rolling mill.
  • the higher-level control and regulation device feeds the new target values into a connected process control system, which corrects the settings of the aggregates of the hot rolling mill to the necessary extent.
  • the measuring device is arranged after the last roll stand in the conveying direction F, but before a laminar cooling section.
  • new target specifications can be specified by the higher-level control and regulation device and passed on to various units by the process control system. It can be made for subsequent strip sections a reverse control of process settings of the hot rolling mill, such. B. the pass reductions, rolling forces, speeds, cooling settings, but it is also possible for the strip section currently being measured to be controlled in advance and the cooling intensity and cooling section length can be changed.
  • FIG. 2 shows an example of the schematic structure of the open-loop and closed-loop control in a further embodiment variant.
  • the hot rolling mill shown as a controlled system, is made up of a number of units A1 to An. At least one point in the hot rolling mill, e.g. B. before and / or after the cooling line, the measured value, here the grain size, is recorded and used as a controlled variable in the higher-level control and regulation device returned.
  • the measured deviation is transmitted to the integrated process model, which determines new target specifications for the entire hot rolling train with its units A1 to An.
  • the changed set values are forwarded to the hot rolling mill without an additional process control system from the process model integrated in the higher-level open-loop and closed-loop control device. Since the process model takes all aggregates into account, interactions with other control parameters can be taken into account overall.
  • the higher-level control and regulation device uses its integrated process model to determine the necessary settings for the rolling stands of the finishing train, e.g. B. for profile and flatness control, the adjustment, bending, roll cooling, forming speed and strip cooling (volume, application time and sequence) and enters appropriate corrections for the actuators in the event of deviations.
  • the higher-level control and regulation device determines those adjustments to the actuators that are necessary.
  • cross-aggregate interactions such. B. the cooling intensity on the flatness or z.
  • FIG. 3 shows an example of a grain size profile of a hot strip produced in a hot strip mill. It thus shows, by way of example, how an actual value, here the grain size, can be stored in a database.
  • the graphic shows two grain size curves measured over the total length L of a hot-rolled strip, with the actual value of the grain sizes being between one allowable lower and upper limits. If the limit value is not reached or exceeded, the method according to the invention can intervene.
  • the course of curve a) shows the course of the grain size without optimization due to the intervention of the superordinate control and regulation device on the hot rolling mill
  • the course of curve b) shows the course of the grain size with optimization. It is clear that curve a) exceeds or falls below the permissible limit values without the possibility of correction.
  • the course of curve b) shows that the limit values are complied with as a result of the optimization of the manipulated variables by the higher-level open-loop and closed-loop control device. Significantly smaller limit values can even be achieved, thereby improving
  • FIG. 4 compares a possible system diagram of a rolling train with a temperature profile in the rolling train and a microstructure development in a hot strip.
  • the rolling train consists, for example, of a first preheating furnace, two roughing stands, intermediate heating in the form of a second furnace, five finishing rolling stands as well as a cooling section and a coiler.
  • a measuring point M is arranged between the last finishing rolling stand and the cooling section.
  • a further measuring point N is arranged in front of the coiler in this exemplary embodiment.
  • the rolling stock is processed in conveying direction F.
  • the finished hot strip is assigned a target property “microstructure and/or grain size” KGsoii from a value range between an upper and a lower interval limit (target value window) at a defined point within the hot rolling mill.
  • target values for hot rolling are specified for the individual units of the hot rolling mill, for example based on empirical knowledge or on the basis of process models, with which the property of the hot strip is to be achieved at possible specified points.
  • the target values for hot rolling should be, for example, furnace extraction temperatures and pass reductions in the roughing stands and the finishing stands, for example at the positions AE.
  • the measuring point M for determining the actual property "microstructure and/or grain size" of the hot strip is located between the last finishing stand and the cooling line.
  • the target property “microstructure and/or grain size” KGsoii is specified for the hot strip at the position of measuring point M (specified point).
  • Figure 4 shows curves for three temperatures Tsoii, Tactual and Topt as well as for the properties KGsoii, KGist and KGopt in 2 diagrams.
  • the target course of the temperature Tsoii (Diagram 1) is specified by the process model in such a way that in interaction with the furnace extraction temperature Tsoii.A at position A, the pass reductions in the roughing stands at positions B and C, the furnace extraction temperature TSOII.D the position D and the acceptance of the hot strip in the finishing stands, for example at the position E, the hot strip at the measuring point M reaches the target property KGsoii.
  • the target values Tsoii for hot rolling are not exactly adhered to and the measured temperatures Tactual deviate from the target values, compare temperature curves Tsoii and Tactual in Diagram 1.
  • the deviation in the temperature profile leads to an actual profile of the property “microstructure and/or grain size” KGact, which is shown in Diagram 2.
  • the actual property KGist, M of the hot strip deviates at measuring point M by the value x from the upper interval limit of the target value window for the target value property KGSOII.M at measuring point M.
  • the continuous measurement of the structure development at the measuring point M first records this deviation x.
  • the process model determines new target values for hot rolling, particularly at positions AE. These new target values lead to a temperature curve T Op t (Diagram 1) and to a new property KGopt of the hot strip (Diagram 2).
  • the process model derives new target values for hot rolling from the deviations between the actual and target values for hot rolling at positions AE and at measuring point M, e.g. B.
  • the method according to the invention succeeds in bringing the desired target properties, in particular KGo P t,M at the measuring point M, into the desired target value window by adjustments in the above-mentioned process stages in the roughing and/or finishing train at the positions AE respectively.
  • the method according to the invention optionally provides for the cooling section to be closed as a further supplementary actuator in addition to the upstream actuators of the rolling mill (e.g. furnaces, roughing and finishing stands). to use.
  • the cooling section is not absolutely required as an actuator, but could also be included as an actuator for achieving or further improving the target properties of the hot strip in another case for further optimization by the method according to the invention.
  • the measuring point N between the cooling section and the coiler is then used for checking, at which it is checked again or alone whether the target property KGopt.N of the hot strip there is within a new target value window for the property KGSOII.N.

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

Abstract

L'invention concerne un procédé de correction d'au moins une propriété, en particulier la granulométrie et/ou le comportement de recristallisation, d'une bande laminée à chaud dans un laminoir à chaud L'objectif de l'invention est de permettre d'obtenir des valeurs cibles prédéfinies pour la bande laminée à chaud, avec des tolérances plus petites. À cet effet, selon le procédé selon l'invention, les valeurs réelles de la propriété de la bande laminée à chaud sont déterminées en continu pendant le processus de laminage à chaud dans le laminoir à chaud. De plus, un modèle de processus relié à un système de commande de niveau supérieur à boucle ouverte ou à boucle fermée du laminoir à chaud détermine au moins un écart (x) de bande laminée à chaud entre la valeur réelle déterminée en continu et la valeur cible spécifiée pour la ou les propriétés de la bande laminée à chaud et/ou détermine au moins un écart de rouleau entre la valeur réelle mesurée pendant le processus de laminage à chaud et la valeur cible spécifiée du processus de laminage à chaud. De plus, le modèle de processus détermine de nouvelles valeurs cibles modifiées pour le processus de laminage à chaud sur la base de l'écart de bande laminé à chaud et/ou de l'écart de rouleau et en tenant compte des possibilités liées au matériau et au système, et il transfère ces valeurs au système de commande à boucle ouverte ou boucle fermée des unités impliquées dans le processus de laminage à chaud.
PCT/EP2021/082563 2020-11-20 2021-11-22 Procédé de correction des propriétés d'une bande laminée à chaud ayant une composition chimique spécifique dans un laminoir à chaud Ceased WO2022106707A1 (fr)

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EP21823198.3A EP4247574A1 (fr) 2020-11-20 2021-11-22 Procédé de correction des propriétés d'une bande laminée à chaud ayant une composition chimique spécifique dans un laminoir à chaud

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DE102020214643.8 2020-11-20
DE102020214643.8A DE102020214643A1 (de) 2020-11-20 2020-11-20 Verfahren zur Einstellung der Eigenschaften eines Warmbandes mit einer bestimmten chemischen Zusammensetzung in einer Warmwalzstraße

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DE102023135965A1 (de) * 2023-12-20 2025-06-26 Sms Group Gmbh Verfahren zum Betrieb einer Warmbandproduktionsanlage und Warmbandproduktionsanlage zur Herstellung eines Warmbandes
CN119500788B (zh) * 2024-10-29 2025-08-05 宿迁南钢金鑫轧钢有限公司 一种小型钢连轧工艺的生产控制方法及系统

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WO2001047648A2 (fr) * 1999-12-27 2001-07-05 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
EP2431104A1 (fr) * 2010-09-16 2012-03-21 Siemens Aktiengesellschaft Procédé d'établissement en temps réel pour la température et la géométrie d'une bande métallique chaude dans une ligne de fabrication
DE102016222644A1 (de) 2016-03-14 2017-09-28 Sms Group Gmbh Verfahren zum Walzen und/oder zur Wärmebehandlung eines metallischen Produkts

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