WO2008043684A1 - Verfahren zur nachverfolgung des physikalischen zustands eines warmblechs oder warmbands im rahmen der steuerung einer grobblechwalzstrasse zur bearbeitung eines warmblechs oder warmbands - Google Patents
Verfahren zur nachverfolgung des physikalischen zustands eines warmblechs oder warmbands im rahmen der steuerung einer grobblechwalzstrasse zur bearbeitung eines warmblechs oder warmbands Download PDFInfo
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- WO2008043684A1 WO2008043684A1 PCT/EP2007/060421 EP2007060421W WO2008043684A1 WO 2008043684 A1 WO2008043684 A1 WO 2008043684A1 EP 2007060421 W EP2007060421 W EP 2007060421W WO 2008043684 A1 WO2008043684 A1 WO 2008043684A1
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- WIPO (PCT)
- Prior art keywords
- hot
- state
- hot plate
- strip
- sheet
- Prior art date
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Classifications
-
- G—PHYSICS
- G05—CONTROLLING; REGULATING
- G05B—CONTROL OR REGULATING SYSTEMS IN GENERAL; FUNCTIONAL ELEMENTS OF SUCH SYSTEMS; MONITORING OR TESTING ARRANGEMENTS FOR SUCH SYSTEMS OR ELEMENTS
- G05B13/00—Adaptive control systems, i.e. systems automatically adjusting themselves to have a performance which is optimum according to some preassigned criterion
- G05B13/02—Adaptive control systems, i.e. systems automatically adjusting themselves to have a performance which is optimum according to some preassigned criterion electric
- G05B13/04—Adaptive control systems, i.e. systems automatically adjusting themselves to have a performance which is optimum according to some preassigned criterion electric involving the use of models or simulators
-
- 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
-
- G—PHYSICS
- G05—CONTROLLING; REGULATING
- G05B—CONTROL OR REGULATING SYSTEMS IN GENERAL; FUNCTIONAL ELEMENTS OF SUCH SYSTEMS; MONITORING OR TESTING ARRANGEMENTS FOR SUCH SYSTEMS OR ELEMENTS
- G05B13/00—Adaptive control systems, i.e. systems automatically adjusting themselves to have a performance which is optimum according to some preassigned criterion
-
- G—PHYSICS
- G05—CONTROLLING; REGULATING
- G05B—CONTROL OR REGULATING SYSTEMS IN GENERAL; FUNCTIONAL ELEMENTS OF SUCH SYSTEMS; MONITORING OR TESTING ARRANGEMENTS FOR SUCH SYSTEMS OR ELEMENTS
- G05B13/00—Adaptive control systems, i.e. systems automatically adjusting themselves to have a performance which is optimum according to some preassigned criterion
- G05B13/02—Adaptive control systems, i.e. systems automatically adjusting themselves to have a performance which is optimum according to some preassigned criterion electric
- G05B13/04—Adaptive control systems, i.e. systems automatically adjusting themselves to have a performance which is optimum according to some preassigned criterion electric involving the use of models or simulators
- G05B13/042—Adaptive control systems, i.e. systems automatically adjusting themselves to have a performance which is optimum according to some preassigned criterion electric involving the use of models or simulators in which a parameter or coefficient is automatically adjusted to optimise the performance
-
- 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
- B21B1/30—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 non-continuous process
- B21B1/32—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 non-continuous process in reversing single stand mills, e.g. with intermediate storage reels for accumulating work
-
- 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
- B21B1/30—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 non-continuous process
- B21B1/32—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 non-continuous process in reversing single stand mills, e.g. with intermediate storage reels for accumulating work
- B21B1/34—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 non-continuous process in reversing single stand mills, e.g. with intermediate storage reels for accumulating work by hot-rolling
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B21—MECHANICAL METAL-WORKING WITHOUT ESSENTIALLY REMOVING MATERIAL; PUNCHING METAL
- B21B—ROLLING OF METAL
- B21B37/00—Control devices or methods specially adapted for metal-rolling mills or the work produced thereby
- B21B37/28—Control of flatness or profile during rolling of strip, sheets or plates
- B21B37/30—Control of flatness or profile during rolling of strip, sheets or plates using roll camber control
- B21B37/32—Control of flatness or profile during rolling of strip, sheets or plates using roll camber control by cooling, heating or lubricating the rolls
-
- 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
- B21B37/00—Control devices or methods specially adapted for metal-rolling mills or the work produced thereby
- B21B37/58—Roll-force control; Roll-gap control
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B21—MECHANICAL METAL-WORKING WITHOUT ESSENTIALLY REMOVING MATERIAL; PUNCHING METAL
- B21B—ROLLING OF METAL
- B21B37/00—Control devices or methods specially adapted for metal-rolling mills or the work produced thereby
- B21B37/74—Temperature control, e.g. by cooling or heating the rolls or the product
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B21—MECHANICAL METAL-WORKING WITHOUT ESSENTIALLY REMOVING MATERIAL; PUNCHING METAL
- B21B—ROLLING OF METAL
- B21B38/00—Methods or devices for measuring, detecting or monitoring specially adapted for metal-rolling mills, e.g. position detection, inspection of the product
- B21B38/006—Methods or devices for measuring, detecting or monitoring specially adapted for metal-rolling mills, e.g. position detection, inspection of the product for measuring temperature
-
- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y10—TECHNICAL SUBJECTS COVERED BY FORMER USPC
- Y10T—TECHNICAL SUBJECTS COVERED BY FORMER US CLASSIFICATION
- Y10T29/00—Metal working
- Y10T29/49—Method of mechanical manufacture
- Y10T29/4998—Combined manufacture including applying or shaping of fluent material
- Y10T29/49988—Metal casting
- Y10T29/49991—Combined with rolling
Definitions
- the invention relates to a method for tracking the physical state of a hot plate or strip as part of the control of a rolling train for reversibly machining a hot plate or strip, comprising at least one rolling stand for reversibly rolling the hot plate or strip.
- a slab of defined length is rolled into a sheet by rolling in several passes. Since the slab is heated, one speaks in total of a hot plate or hot strip.
- a hot plate or hot strip For rolling the hot plate or strip, at least one rolling stand is used, by which the hot plate or hot strip is moved back and forth until the required number of stitches are reached, that is, the desired thickness of the sheet is achieved. This process is also called reversing.
- Steckel rolling mills are used in which one or more rolling mills are arranged between two reels on which the tape can be rolled up.
- the temperature distribution in the hot plate or hot strip is determined at a specific location For example, by a model or by a temperature measurement, for example by a pyrometer. The temperature can be determined at several points of the hot plate or hot strip, so that ultimately results in a temperature distribution. Then, a model of the heavy plate rolling mill and of the hot plate or hot strip is used to determine working parameters of the individual road components, for example the Entzunungsstrom of cooling or heating devices and of course the rolling mill, so that the desired sheet metal parameters are achieved with desired Mate ⁇ aleigenschaften.
- the temperature effects of the individual components of the heavy plate rolling train are taken into account.
- the temperature of the hot ⁇ plate or hot strip is at particular positions determined in dependence of the to-future temperature influence received, and determines therefrom the NECESSARY parameters with which the components are driven have to.
- tempera- ture of the hot plate or hot strip has been mentioned so far, this is just one of several sizes that describe the state of the hot plate or hot strip, so to speak. Also relevant for the processing properties are, for example, the phase distribution, the
- the invention is therefore based on the object to provide a method that allows a more effective calculation and thus fast ⁇ sized throughput times and lower computational complexity. To solve this problem are in a process of the type mentioned erflndungsgelois following steps see pre ⁇ :
- repeatedly predicted conditions and future sheet-metal treatment parameters can be determined as part of a prediction on the basis of a previously determined, in particular the current state.
- state variables describing the properties of the hot plate or hot strip can be derived, advantageously spatially resolved.
- state variables can be, for example, the temperature and / or the residual solidification and / or the phase fractions and / or grain sizes and / or the enthalpy.
- temperature is often used as an example in the following, most of the statements apply to all conceivable state variables.
- the condition is ultimately defined by at least Para ⁇ meter that describe with sufficient accuracy the distribution of the values of the state variables within the hot plate or hot strip. Two possibilities are conceivable above all.
- the state can be described by a parameterized state function.
- ⁇ on a polynomial of certain order in three dimensions to think, act whose coefficients as parameters and that reflects, for example, a temperature distribution or a Restver- fixing distribution.
- the state can also be described by at least one or the state size at different sheet metal points of the hot plate or hot strip.
- a relatively simple initialization is possible, for example via a measuring device, if measured values are recorded at the measuring points and assigned to the sheet metal points, optionally as a profile across the thickness.
- the state is described by local temperature profiles at the various sheet-metal points.
- the initial temperature profiles at the various sheet points should reflect not only a localized temperature information, but there is depth information, which represents the United ⁇ running through the thickness of the hot plate or hot strip.
- the sheet-metal points may include a plurality of along the length and / or a plurality of arranged along the width of the sheet or strip points. This ultimately results in a field of state variables, whereby the state size distribution, in particular temperature distribution, between the individual points can be modeled.
- the sheet points are usually characterized by their relative position on the hot plate or hot strip. From the starting point of this initial state is cyclically refreshes ⁇ alinstrument how is be ⁇ enrolled in the subsequent process steps. Accordingly, at the starting point, ie at the beginning of the cyclical updating, the starting point for updating must be information about the condition which is as close to reality as possible, in particular the state-size distribution, in the hot plate or hot strip. This information prints out in the initial state.
- the initial state in particular the initial temperature ⁇ profile
- the initial state can be determined essentially in two ways, which can also be combined with each other.
- the determination can be made via a measuring device or by means of a model, but also on the basis of the measured data of a measuring device and a model.
- the process steps preceding the starting point and their influence on state variables are taken into account in such a way that the current, initial state can be determined.
- Parameters taken into account here can be, for example, the furnace temperature of an upstream furnace, parameters of a cooling device, running times, running distances or running speeds on rolled parts and the like.
- a state-size measurement in particular a temperature measurement, can be carried out which, in the case of an alternative solution, determines the initial state, in the case of a calculation with a model yields additional parameters.
- an initial temperature measurement can already be carried out prior to any heating up of the slab in an oven, the effects of the oven having to be well known.
- the usual starting point is a temperature measurement or determination after leaving such a furnace.
- the initial precalculation does not have to be based on the initial state, but can also take place only after a few update cycles due to an already updated state.
- This time determines an initial event, such as the closing of the oven door, although other options are conceivable. It is the well-known forecast that is made using the same model of hot plate or hot strip and heavy plate rolling mill. In this case, the theoretically occurring state influences are modeled on the basis of specific sheet metal treatment parameters, wherein the positions can comprise, in particular, points of action of the rolling mill and / or a cooling device and / or a descaling device on the hot plate or hot strip.
- a cyclic updating of the state using the model of the hot plate or hot strip and the heavy plate rolling train wherein a tracking of the hot ⁇ sheet or hot strip, especially the sheet metal points, and the state, in particular the temperature, influencing or be considered reproducing operating parameters.
- the state for example as described by the temperature profiles, is constantly updated during the course of the rolling process, that is, it is tracked almost in real time. Accordingly, a new state is always calculated at any time on the basis of the model, starting from the last known state, which is described, for example, by the current temperature profiles.
- the current, actual operating parameters are also taken into account and it is calculated whether and what influence this has on the current Condition, for example, the current temperature distribution, have.
- the current state reflects the state of the hot plate or hot strip, in particular also the state variables derivable therefrom, at the time of the update.
- the temperature is thus, for example, checks whether a temperature influencing found due to the current, actual Ar ⁇ beitsparameter and for example, the temperature profiles are adjusted accordingly so as to reflect the temperature distribution in the hot plate or hot strip at the time of update.
- Such a continuous, timely recalculation of the temperature can be done by a so-called temperature monitor.
- the updating can take place as an independent process, ie the updating takes place even if, for example, the initial or renewed prediction takes place simultaneously. This can be achieved, for example, by distributing the computational load among multiple processors.
- At least one location different from the starting point can, with particular advantage, optionally be further
- Temperature measurement are performed, the result of which serves as an operating parameter for correcting and thus updating the state, in particular the temperature profiles. It is one of the above-mentioned adaptations.
- Such a temperature measurement can take place, for example, before and / or behind the at least one rolling stand, so that a value is obtained between the respective passes, which is an indication of the actual temperature of the hot plate or hot bands at each point.
- a direct input value can not be used, such temperature measurements taken in Übri ⁇ gen mostly visually, for example via pyrometer, in general, since it during the WaIz- process often too flat stick Uber cover the hot plate or hot strip, for example by scale or on the hot plate or hot-rolled water, can come. Nevertheless, such temperature measurement values contain sufficiently good information as operating parameters, so that the state can be updated (adapted) on the basis of such measurements.
- a temperature measuring device is arranged adjacent to the rolling mill stand, since the hot plate or strip is already removed for effectiveness reasons, not too far from the work rolls, the temperature measurement for only a part of the hot plate or hot strip, whereby the corrections of measured part on the corrections of the unmeasured part. If, for example, deviations are detected in the measured sheet metal parts, it is concluded therefrom that deviations in the unmeasured part occur.
- a mean value for the correction of the condition can be used in unmeasured parts of the hot ⁇ sheet or hot-rolled strip. In this case, it is assumed that detected deviations are on average also in the non-measured sheet metal parts, whereupon a corresponding update (adaptation) takes place.
- the operating parameters influencing the state parameters of a cooling device and / or a descaling device and / or the rolling mill and / or a heating device and / or the Blechgeschwindig ⁇ speed to use.
- all operating parameters are required to determine anyußsbeempoundung into ⁇ particular temperature influence, the hot plate or hot strip is measured and, therefore, a flow in the updating of the state.
- the method according to the invention may also comprise the step of determining future sheet-metal treatment parameters in the course of a new prediction on the basis of, in particular, the current state when at least one predetermined event occurs.
- the initial forecast ie the first forecast
- a new forecast is carried out after the initial prediction.
- the recalculation of the state for example the
- the achievement of a certain position in the machining process through the hot plate or hot strip in particular adjacent to Emwirkpunk- th the rolling mill and / or a cow device and / or a Entzu matterssein ⁇ chtung on the hot plate or hot ⁇ band , and / or serve a user instruction.
- the current position of the hot plate or hot strip during processing is usually provided by a tracking. Thus, a simple check can take place, if that
- Hot plate or hot strip has reached a certain point. When this position is reached, a new prediction is automatically carried out on the basis of the current state. As already mentioned in the introduction, it is customary to carry out an advance calculation immediately upon occurrence of the event and thus to achieve an update of the sheet-metal treatment parameters.
- An alternative or additional way to initiate a recalculation is a user instruction.
- a control element is provided on the control panel of a user monitoring the process, for example, by means of which, for example, based on observations of the user, a recalculation can be triggered.
- the predetermined event may be the failure of an indirect or direct comparison of the current state with the precalculated state of an earlier prediction calculation.
- the comparison can also be carried out with the attainment of specific positions, in particular adjacent to points of action of the rolling mill and / or a descaling device on the hot plate or hot strip, through the hot plate or hot strip, which positions again via a path tracking can be determined. Accordingly, in this embodiment, a new prediction is not carried out directly when such positions are reached; It is first checked whether a new Vorausbe ⁇ calculation is necessary at all, which takes place only in the presence of a predetermined deviation.
- a comparison is made at the positions from which temperature profiles are already known from the earlier prediction with the timely updated and thus current temperature profiles.
- This comparison can be immediate, but also indirect.
- the parameters of rolling force and torque depend on the temperature profiles.
- the current state is always compared with the state at the position determined in the immediately preceding prediction, which can therefore be a new prediction.
- the sheet-metal treatment parameters may also be parameters of a cooling device and / or a descaling device and / or the rolling mill and / or a heating device and / or the sheet metal speed.
- a cooling device and / or a descaling device and / or the rolling mill and / or a heating device and / or the sheet metal speed are parameters of a cooling device and / or a descaling device and / or the rolling mill and / or a heating device and / or the sheet metal speed.
- Blechgeschwmdtechnik should not only be understood in the context of this application, the Einfadel Malawi Malawi in a rolling mill, but also the transport speed between the various components of the heavy plate rolling mill.
- the parameters mentioned here and intended are the corresponding working parameters with which the corresponding components are controlled.
- the aforementioned operating parameters can, of course, also include the working parameters, wherein the operating parameters are supplemented by, for example, measurement results or the like.
- An update of the sheet metal processing parameters and thus the control of the rolling process can be done in various ways.
- the adaptation includes the way the next stitch is made. It means that Rolling speeds, Einfadel Norwayen and working ⁇ parameters of the Walzgerust upstream descaling emcardien can be updated accordingly.
- the updating of the sheet-metal treatment parameters comprises an asymmetrical activation of the upper and lower work rolls of the rolling mill.
- a conditional profile is considered across the depth of the hot plate or hot strip. Because of this information, asymmetric control of the upper and lower work rolls of the rolling mill may be necessary to achieve a desired final quality.
- the updating of the sheet-metal treatment parameters comprises setting a standstill time and / or an additional cooling or heating process and / or a change in the sheet metal speed. This will eventually result in a temperature adjustment.
- the hot plate or hot strip may be provided, for example, to grow warm ALLOWABLE process temperatures again for shorter stays, or cool to be relevant to the rest of the deformation starting temperature to read ⁇ sen.
- the current state or variables derived therefrom, in particular state variables are brought to the display of an operator, whereupon, in particular, adaptation of sheet-metal treatment parameters by the operator can be carried out.
- information about the temperature course in the field of depth of the operator can, for example, next to an averaged temperature at a point of the hot plate or hot strip are given, for example, the temperature at the top, in the middle and at the bottom of the hot plate or hot ⁇ band.
- sheet metal processing parameters such as asymmetric control of the top and bottom the lower work roll of Walzgerustes, as necessary he ⁇ know and make himself.
- the temporal course of the states and / or variables derived therefrom, in particular of correction variables can be stored in a storage device for subsequent evaluation with regard to the treatment of further hot plates or hot strips. Systematic errors of the prediction can thus be detected and the model can be adapted accordingly.
- the invention also relates to a rolling mill, controllable by the erfmdungsge speciallyen method.
- a central control device can be provided, in which the data is collected and processed accordingly.
- 3A is a flowchart of the processes of the inventive and 33BB method.
- 1 shows a heavy plate rolling mill 1.
- rollover underway 2 ⁇ the hot plates 3, of which only two are shown here for clarity, guided by the heavy plate rolling mill.
- 1 First, the hot plate 3 is reheated in an oven 4. After leaving the furnace 4, a first temperature is measured by means of a Py ⁇ rometers. 5 In a descaling device 6, the hot plate is freed as completely as possible from scale. Thereafter, a cooling device 7 is provided, which serves to adjust the temperature of the hot plate 3.
- Em second pyrometer 8 measures the temperature of the hot plate 3 in front of a rolling mill 9
- another pyrometer 10 measures the temperature after the rolling mill 9.
- the hot plate 3 is repeatedly reversed alternately guided by the respective side by the rolling mill 9, as indicated by the arrow 11.
- the rolling mill 9 comprises at its front and its rear side a secondary scarfing device 13, which serves for further descaling. If the hot plate has reached the desired thickness after several passes in the rolling stand 9, it is fed to a cooling device 14 in which it is cooled accordingly. All the components shown can be seen communicating with a central control device 15, which is designed to carry out the control method according to the invention.
- a display device 16 and an input device 17 are also connected.
- the control of the individual components takes place via the communication connections 18 on the basis of sheet metal processing parameters determined in the course of a preliminary calculation or specified by the user, which represent working parameters of the individual components.
- 18 measured values or responses to control commands are transmitted via the communication connections.
- the heavy plate rolling mill 1 shown here is only an example ⁇ way to see. Thus, it is initially conceivable that further cooling devices 7 or descaling devices 6 are provided. It would also be possible to have a further cooling device or further furnace in the immediate vicinity of the rolling stand 9, so that temperature influences can also be made here.
- the state is described by local temperature profiles at different sheet-metal points of the hot-rolled sheet, and the state is considered as the temperature.
- the state can be defined, for example, by a parameterizable state function.
- the method described can be applied to other state variables, For example, the residual strength or the phase distribution, transmitted.
- control device 15 is designed to carry out the method according to the invention.
- a model 19 of the hot plate and the heavy plate rolling mill is initially stored in it.
- preliminary calculations are possible from the starting point, here when passing through the pyrometer 5.
- model 19 are controlled by a pre-calculation, possibly by re Before ⁇ ausbetician (re-calculation) sheet treatment parameters and predicted temperature profiles 20 at specific positions, for example, the individual components Einwirkddlingen determined.
- the temporal course of the temperature profiles 21 or determined deviation and corrections can also be stored in a memory device 23 in the control device 15 for later evaluation with regard to the rolling processes of further hot plates.
- 2 shows the position of the sheet metal dots on a hot plate 3.
- the sheet 24 points are arranged in alignment in the longitudinal direction and the width Rich ⁇ processing of the hot plate 3 so that eventually results in a matrix.
- a temperature profile 25 is considered, which reflects the temperature profile in the direction of the thickness of the hot plate 3.
- the complete temperature distribution in the hot plate 3, ie also between the plate points 24, can be determined. This reflects the thermal state of the hot plate.
- the pyrometers 5, 8 and 10 which can measure above and below the hot plate 3, ultimately only surface temperatures again, the temperature profile of the temperature profile 25 can be determined based on physical model assumptions. It should be noted that the sheet metal points 24 are determined by the relative position on the hot plate 3, that is, the hot plate 3 is rolled into the length, so the distance between the sheet points 24, which retain their relative position.
- the current temperature profiles 21 and / or quantities derived therefrom are also displayed via the display device 16 of an operator, who can also make manual adjustments via an input device 17.
- a temperature at the top, the bottom and in the middle of the hot plate 3 at this sheet point 24 are indicated, whereupon a different control of the work rolls 12 of the rolling mill 10 by an operator can.
- FIGS. 3A and 3B show a flow chart of the processes of the method according to the invention.
- the method according to the invention is characterized by two parallel and undisturbed processes.
- the process shown in FIG. 3A relates to the cyclical updating of the access Stands, in this example, a temperature monitor.
- the process shown in FIG. 3B initiates the initial or renewed prediction when predetermined events occur. In this case, relevant input variables are indicated in the box 26 on the right side in each case.
- step S1 at the starting point in the heavy plate rolling mill 1 by means of the first temperature measurement on the first pyrometer 5, the initial local temperature profile is determined for each sheet metal point 24.
- the initial state is determined. This is done here on the basis of the measured values with the addition of some physical model assumptions for determining the course.
- the determined temperature profiles 21 and thus the state are now updated cyclically.
- the updating of the temperature profiles 21 takes place in step S2.
- the model 19 is used, wherein the temperature-influencing impressive ⁇ or reproducing operating parameters are taken into account.
- the tracking of the sheet points 24 is also a.
- all operating parameters are taken into account, which can influence the temperature or temperature distribution of the hot ⁇ sheet 3 in any way. Therefore, a constant current Nachbuchung the temperature profiles 21 is possible.
- the actual sheet metal treatment parameters may be included, but in addition also measured values, such as the ejected amount of water, the rolling forces or torques of the rolling mill 9 or the like.
- the pyrometers 8 and 10 the temperature of the hot plate 3 descriptive measured values are obtained. These are also an adaptation in the update of the temperature profiles 21 a.
- step S3 the path following ⁇ device 22 is then checked based on data, whether the machining process has reached its end. Frequently, it is also checked whether the tracking is completed, that is, the process only ends when the hot plate is no longer traced, so that the sheet metal treatment after the rolling process is still considered. If the end of the machining process is reached, then the erfmdungsgetoole method is completed, step S4. If the end of the machining process has not yet been reached, step S2, the updating of the temperature profiles 21, is carried out again. This takes place cyclically in each case, here at intervals of one second.
- step S5 it is checked in step S5 whether one of a plurality of predetermined positions is reached, that is to say a corresponding event occurs. If no event has occurred, step S5 is repeated further, that is, as long as the inventive method and thus the cyclic updating of the temperature profiles 21 takes place, is also checked for events.
- the first occurring event in time is the initial event. It determines when in step S6 the first, ie initial, prediction is performed.
- the initial He ⁇ eignis may already be the starting point, but will have generally given only after several updates, for example, when closing the oven door.
- the model 19 of the hot plate 3 and the heavy plate rolling mill 1 is used, theoretical temperature profiles 20, ie stand-sized, are determined at certain positions of the hot plate 3 in the processing process for the determination of Blech analogspara ⁇ meters.
- the positions can be chosen as points of action of the components of the plate rolling mill 1, or in the vicinity. It can also be achieved more times ⁇ a position on the basis of the reversing piercing in Walzgerust 9, therefore, the positions with the predicted temperature profiles 20 generally also include a timing the respective component.
- the sheet metal treatment parameters are control parameters or working parameters of the individual components of the plate rolling mill 1, thus describing, for example, how the next pass should be performed, what quantities of water should be sprayed at how much pressure on the hot plate 3, etc.
- Step S6 a re-calculation, ie a recalculation, wherein updated sheet metal processing parameters are determined.
- updated sheet metal processing parameters are determined.
- the renewed prediction is again based on the model 19, wherein the ak ⁇ tual temperature profile 21 is used at the sheet metal points 24 as a starting point.
- the results of this recalculation replace the results of the original or a previous recalculation.
- Heavy plate rolling mill 1 be. It is also conceivable that a user enters a user instruction, for example via an operating element, so that a renewed prediction is encountered ⁇ .
- the renewed prediction only takes place after a comparison of the predicted temperature profiles 20 with the current temperature profiles 21 of the rolled sheet 3 at the positions. If there is no deviation, so the operation proceeds to step S6, but detected a deviation that is greater than a predetermined value, the advance ⁇ calculation is performed in step S6. It should be noted that a comparison always takes place against the predicted temperature profiles 21 determined at the specific positions on the basis of the latest recalculation.
- step S2 the cyclic updating of the temperature profiles is continued in step S2.
- the current temperature profiles 21 themselves or information or quantities derived therefrom are displayed to an operator on the display device 16, so that the operator himself can intervene in the rolling process and optionally change sheet metal treatment parameters.
- DIE se by an operator modified sheet treatment parameters are of course also taken into account as part of the inventiveness gema built process, as they have precedence over it ⁇ figured sheet treatment parameters.
- step S2 As a result of the updating of the temperature profiles 21 carried out in step S2, all information derived from the operating parameters for the further course of the rolling process is summarized, so that operating parameters which have been incorporated into the updating of the temperature profile 21 need not be stored any longer.
- step S2 Recalculation in step S2 can therefore be carried out very quickly, since only influences since the last update must be taken into account. Also a renewed calculation in step S6, which uses as a starting point the current Tem ⁇ temperature profiles, consumes less computing time. By ⁇ computing power is saved and the throughput is increased because unnecessary waiting times are prevented.
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- Engineering & Computer Science (AREA)
- Health & Medical Sciences (AREA)
- Artificial Intelligence (AREA)
- Computer Vision & Pattern Recognition (AREA)
- Evolutionary Computation (AREA)
- Medical Informatics (AREA)
- Software Systems (AREA)
- Physics & Mathematics (AREA)
- General Physics & Mathematics (AREA)
- Automation & Control Theory (AREA)
- Mechanical Engineering (AREA)
- Control Of Metal Rolling (AREA)
Abstract
Description
Claims
Priority Applications (6)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
UAA200903389A UA98120C2 (ru) | 2006-10-09 | 2007-10-02 | Способ отслеживания физического состояния горячего листового металла или горячей полосы в рамках управления толстолистовым прокатным станом для горячего листового металла или горячей полосы |
CN200780037770.1A CN101522325B (zh) | 2006-10-09 | 2007-10-02 | 在用于加工热轧板材或热轧带材的厚板轧机的控制的范围内对热轧板材或热轧带材的物理状态进行跟踪的方法 |
EP07820803A EP2094410A1 (de) | 2006-10-09 | 2007-10-02 | Verfahren zur nachverfolgung des physikalischen zustands eines warmblechs oder warmbands im rahmen der steuerung einer grobblechwalzstrasse zur bearbeitung eines warmblechs oder warmbands |
BRPI0719233-9A2A BRPI0719233A2 (pt) | 2006-10-09 | 2007-10-02 | Método para monitorar o estado físico de uma folha laminada a quente ou uma tira laminada a quente, controlando simultaneamente um trem de laminação de chapas grossas para trabalhar uma folha laminada a quente ou uma tira laminada a quente. |
US12/311,482 US8145346B2 (en) | 2006-10-09 | 2007-10-02 | Method for monitoring a physical state of a hot-rolled sheet while controlling a rolling train for reverse rolling the hot-rolled sheet |
CA002665786A CA2665786A1 (en) | 2006-10-09 | 2007-10-02 | Method for monitoring the physical state of a hot-rolled sheet or hot-rolled strip while controlling a plate rolling train for working a hot-rolled sheet or hot-rolled strip |
Applications Claiming Priority (2)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
DE102006047718A DE102006047718A1 (de) | 2006-10-09 | 2006-10-09 | Verfahren zur Nachverfolgung des physikalischen Zustands eines Warmblechs oder Warmbands im Rahmen der Steuerung einer Grobblechwalzstraße zur Bearbeitung eines Warmblechs oder Warmbands |
DE102006047718.9 | 2006-10-09 |
Publications (1)
Publication Number | Publication Date |
---|---|
WO2008043684A1 true WO2008043684A1 (de) | 2008-04-17 |
Family
ID=38920537
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
PCT/EP2007/060421 WO2008043684A1 (de) | 2006-10-09 | 2007-10-02 | Verfahren zur nachverfolgung des physikalischen zustands eines warmblechs oder warmbands im rahmen der steuerung einer grobblechwalzstrasse zur bearbeitung eines warmblechs oder warmbands |
Country Status (10)
Country | Link |
---|---|
US (1) | US8145346B2 (de) |
EP (1) | EP2094410A1 (de) |
KR (1) | KR20090091290A (de) |
CN (1) | CN101522325B (de) |
BR (1) | BRPI0719233A2 (de) |
CA (1) | CA2665786A1 (de) |
DE (1) | DE102006047718A1 (de) |
RU (1) | RU2448789C2 (de) |
UA (1) | UA98120C2 (de) |
WO (1) | WO2008043684A1 (de) |
Cited By (5)
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WO2011003764A1 (de) | 2009-07-08 | 2011-01-13 | Siemens Aktiengesellschaft | Steuerverfahren für ein walzwerk mit adaption eines von einem walzmodell verschiedenen zusatzmodells anhand einer walzgrösse |
CN102387874A (zh) * | 2009-04-09 | 2012-03-21 | 西门子Vai金属科技有限责任公司 | 制备热轧件的方法和装置 |
EP2527054A1 (de) | 2011-05-24 | 2012-11-28 | Siemens Aktiengesellschaft | Steuerverfahren für eine Walzstraße |
EP2527053A1 (de) | 2011-05-24 | 2012-11-28 | Siemens Aktiengesellschaft | Steuerverfahren für eine Walzstraße |
WO2013160162A1 (de) | 2012-04-26 | 2013-10-31 | Siemens Aktiengesellschaft | Thermomechanisches walzen einer aluminiumplatte |
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JP5380544B2 (ja) * | 2009-10-21 | 2014-01-08 | 東芝三菱電機産業システム株式会社 | 制御設定装置及び制御設定方法 |
EP2428288B1 (de) * | 2010-09-08 | 2013-04-17 | Siemens VAI Metals Technologies GmbH | Verfahren zum Herstellen von Stahlbändern durch Endloswalzen oder Semi-Endloswalzen |
CN102441579B (zh) * | 2010-10-13 | 2016-01-13 | 上海宝钢工业技术服务有限公司 | 热连轧轧机运行状态的在线监测方法 |
DE102014222827A1 (de) * | 2014-11-07 | 2016-05-12 | Sms Group Gmbh | Verfahren zum Steuern und/oder Regeln einer metallurgischen Anlage |
CN108602101B (zh) * | 2015-09-03 | 2020-05-22 | 东芝三菱电机产业系统株式会社 | 钢铁热轧成套设备的控制系统 |
JP6233614B2 (ja) * | 2016-01-27 | 2017-11-22 | Jfeスチール株式会社 | 熱延鋼帯の製造設備列および熱延鋼帯の製造方法 |
TWI599656B (zh) * | 2016-05-19 | 2017-09-21 | 中國鋼鐵股份有限公司 | 鋼熱軋系統與其溫度控制方法 |
EP3324254A1 (de) * | 2016-11-17 | 2018-05-23 | Siemens Aktiengesellschaft | Einrichtung und verfahren zur bestimmung der parameter einer regeleinrichtung |
JP6943271B2 (ja) * | 2018-12-27 | 2021-09-29 | Jfeスチール株式会社 | 溶接点トラッキング修正方法及び溶接点トラッキング修正装置 |
JP7040497B2 (ja) * | 2019-05-28 | 2022-03-23 | Jfeスチール株式会社 | 鋼片の加熱炉抽出温度予測方法及び加熱炉抽出温度予測装置 |
DE102019216261A1 (de) * | 2019-07-02 | 2021-01-07 | Sms Group Gmbh | Verfahren zur Steuerung einer Kühleinrichtung in einer Walzstraße |
CN113649412A (zh) * | 2021-07-19 | 2021-11-16 | 首钢京唐钢铁联合有限责任公司 | 一种热轧扎线控制方法及装置 |
EP4364867A1 (de) * | 2022-11-04 | 2024-05-08 | Primetals Technologies Austria GmbH | Walzen von stahl mit messtechnischer erfassung der phasenumwandlung |
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- 2007-10-02 KR KR1020097009431A patent/KR20090091290A/ko not_active Application Discontinuation
- 2007-10-02 US US12/311,482 patent/US8145346B2/en not_active Expired - Fee Related
- 2007-10-02 CN CN200780037770.1A patent/CN101522325B/zh not_active Expired - Fee Related
- 2007-10-02 BR BRPI0719233-9A2A patent/BRPI0719233A2/pt not_active IP Right Cessation
- 2007-10-02 RU RU2009117322/02A patent/RU2448789C2/ru not_active IP Right Cessation
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CN102387874A (zh) * | 2009-04-09 | 2012-03-21 | 西门子Vai金属科技有限责任公司 | 制备热轧件的方法和装置 |
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WO2012159866A1 (de) | 2011-05-24 | 2012-11-29 | Siemens Aktiengesellschaft | Steuerverfahren für eine walzstrasse |
WO2012159868A1 (de) | 2011-05-24 | 2012-11-29 | Siemens Aktiengesellschaft | Steuerverfahren für eine walzstrasse |
CN103547384A (zh) * | 2011-05-24 | 2014-01-29 | 西门子公司 | 用于轧机列的控制方法 |
CN103547385A (zh) * | 2011-05-24 | 2014-01-29 | 西门子公司 | 用于轧机列的控制方法 |
EP2527053A1 (de) | 2011-05-24 | 2012-11-28 | Siemens Aktiengesellschaft | Steuerverfahren für eine Walzstraße |
EP2697002B1 (de) | 2011-05-24 | 2015-08-12 | Primetals Technologies Germany GmbH | Steuerverfahren für eine walzstrasse |
EP2697001B1 (de) | 2011-05-24 | 2015-08-12 | Primetals Technologies Germany GmbH | Steuerverfahren für eine walzstrasse |
US9547290B2 (en) | 2011-05-24 | 2017-01-17 | Primetals Technologies Germany Gmbh | Control method for a rolling train |
US9751165B2 (en) | 2011-05-24 | 2017-09-05 | Primetals Technologies Germany Gmbh | Control method for mill train |
WO2013160162A1 (de) | 2012-04-26 | 2013-10-31 | Siemens Aktiengesellschaft | Thermomechanisches walzen einer aluminiumplatte |
US10131979B2 (en) | 2012-04-26 | 2018-11-20 | Primetals Technologies Germany Gmbh | Thermomechanical rolling of an aluminum plate |
Also Published As
Publication number | Publication date |
---|---|
KR20090091290A (ko) | 2009-08-27 |
RU2448789C2 (ru) | 2012-04-27 |
US8145346B2 (en) | 2012-03-27 |
BRPI0719233A2 (pt) | 2014-12-02 |
DE102006047718A1 (de) | 2008-04-17 |
CN101522325B (zh) | 2014-02-19 |
UA98120C2 (ru) | 2012-04-25 |
US20090326700A1 (en) | 2009-12-31 |
EP2094410A1 (de) | 2009-09-02 |
CN101522325A (zh) | 2009-09-02 |
RU2009117322A (ru) | 2010-11-20 |
CA2665786A1 (en) | 2008-04-17 |
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