EP1372875B1 - Verfahren zum betreiben einer walzstrasse sowie eine entsprechend ausgebildete walzstrasse - Google Patents
Verfahren zum betreiben einer walzstrasse sowie eine entsprechend ausgebildete walzstrasse Download PDFInfo
- Publication number
- EP1372875B1 EP1372875B1 EP02719952A EP02719952A EP1372875B1 EP 1372875 B1 EP1372875 B1 EP 1372875B1 EP 02719952 A EP02719952 A EP 02719952A EP 02719952 A EP02719952 A EP 02719952A EP 1372875 B1 EP1372875 B1 EP 1372875B1
- Authority
- EP
- European Patent Office
- Prior art keywords
- strip
- rolling
- roll
- profile
- setting value
- 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.)
- Expired - Lifetime
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Classifications
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B21—MECHANICAL METAL-WORKING WITHOUT ESSENTIALLY REMOVING MATERIAL; PUNCHING METAL
- B21B—ROLLING OF METAL
- B21B37/00—Control devices or methods specially adapted for metal-rolling mills or the work produced thereby
- B21B37/72—Rear end control; Front end 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
- B21B37/68—Camber or steering control for strip, sheets or plates, e.g. preventing meandering
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B21—MECHANICAL METAL-WORKING WITHOUT ESSENTIALLY REMOVING MATERIAL; PUNCHING METAL
- B21B—ROLLING OF METAL
- B21B13/00—Metal-rolling stands, i.e. an assembly composed of a stand frame, rolls, and accessories
- B21B13/02—Metal-rolling stands, i.e. an assembly composed of a stand frame, rolls, and accessories with axes of rolls arranged horizontally
- B21B13/023—Metal-rolling stands, i.e. an assembly composed of a stand frame, rolls, and accessories with axes of rolls arranged horizontally the axis of the rolls being other than perpendicular to the direction of movement of the product, e.g. cross-rolling
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B21—MECHANICAL METAL-WORKING WITHOUT ESSENTIALLY REMOVING MATERIAL; PUNCHING METAL
- B21B—ROLLING OF METAL
- B21B2263/00—Shape of product
- B21B2263/20—End shape; fish tail; tongue
-
- 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
- B21B37/16—Control of thickness, width, diameter or other transverse dimensions
- B21B37/22—Lateral spread control; Width control, e.g. by edge rolling
Definitions
- the invention relates to a method for operating a rolling mill for rolling a strip-like rolling stock with an edger and a number of rolling stands arranged one behind the other in a rolling direction, which each have an actuating unit for influencing the contour of the strip end of the rolling stock is assigned. It also concerns such a rolling mill, which in particular also on the inlet side with an edger for width reduction of the rolling stock can be equipped (see e.g. in the search report cited XP-000631074).
- the mill stands commonly called so-called multi-roll stands are designed and a number of working and if necessary include a number of support rollers, are for the Passing through a usually elongated rolling stock is provided and in a direction of advance of the Rolling stock seen one behind the other.
- a rolling mill with a plurality Such mill stands can be used in particular when machining a strip-like rolling stock or rolled strip are used.
- strip-like rolling stock is primarily two-dimensional Design as rolling stock extended in an extension plane with only slightly compared to its dimensions in the extension plane Thickness.
- strip run i.e. the passage of the rolling stock through the roll stands
- strip tension usually has a stabilizing effect on the actual one Tape.
- the strip tension can also be seen off-center when viewed asymmetrically occur.
- the tape pull forces acting off-center on the rolling stock to one of the actual ones Rolling material deviating behavior of the strip end come, which in turn Rolling errors can result.
- the roll stands can each be substantially perpendicular be aligned pivotable to the rolling direction axis of rotation.
- Belt movement can be influenced in such a way that asymmetrically occurring tensile stresses be kept particularly low, or that another requirement for the tape run is observed.
- Faults in the tape run that, for example, too rolled Belt ends, damage to rollers and associated with it Need to perform additional roll changes can usually be corrected by suitable swiveling of roll stands by a helmsman.
- the intervention options with regard to a particularly good rolling result are only limited, however, especially in the direction of rolling seen front roll stands due to the comparatively there necessary corrective measures are difficult to detect are, and since the spaces between adjacent in the rolling direction Roll stands are also relatively difficult to see.
- the invention is therefore based on the object of a method for operating to specify a rolling mill of the type mentioned above with which on simple and reliable way a cheaper for a given rolling result Tape run can be reproducibly observed.
- the goal is to create a rectangular to create a symmetrical tape end / tape head. Long tabs too and fish tails at the end of the belt should be avoided.
- one rolling mill particularly suitable for carrying out the process become.
- this object is achieved according to the invention by a manipulated variable for one or each associated with a roll stand or an edger Actuator depending on the determined contour of the belt end of a rolling stock that has already been rolled is specified.
- the invention is based on the consideration that for a simple and Reliable adherence to a specified tape run the strip run on the basis of rolling operations preceding the strip run particularly characteristic input variables should take place.
- the tracking of the influence on the strip run based on previous rolling results.
- the material flow is provided in an already finished rolling stock, the just depending on the swivel amount made the roll stands occurs with every rolling stock. This flow of material fights particularly in the manner of an effect accumulated over the entire length of the rolling stock in the area of the band end.
- An evaluation of the contour of the End of strip in the plane of extension of the strip-shaped rolling stock thus provides one for specifying the control values for the roll stands or the Staucher particularly valuable information when passing through the next rolling stock.
- a control value for the swivel angle of one or each mill stand depending on the contour of the strip end of the already specified rolled stock.
- a suitable swivel value of the Roll stands around their respective axes of rotation make a particular one possible targeted influence on the belt run.
- the information obtained by evaluating the contour of the strip end is advantageously also used for further correction interventions in the current rolling process used.
- the calculation of the The course of the bandwidth in the subsequent scaffolding taking into account the Bandvenssen für für technik. From the information now available regarding the course of the bandwidth can be known with knowledge of the roll bending behavior Correction values for the manipulated value characteristic of work roll bending be provided in one or each subsequent roll stand. Using these correction values, the control values for the respective work roll bend can be adjusted can be specified in such a way that unevenness and / or strip rolling occur only to a particularly small extent.
- constant traction e.g. narrowing Width of the rolled material in the area of its strip end a locally higher tensile stress arise that undesirably lead to tearing of the tape can.
- Knowing the actual minimum width due to the Evaluation of the contour of the strip end can determine the tensile force with which the respective Looper is charged to be reduced accordingly, so that such tearing can be avoided.
- long Avoiding band tongues at the end of the band can also give the edger a separate one Actuator unit can be assigned, for example, by means of long strap tongues can be compensated for by increased width reductions at the end of the belt.
- the width of the rolling stock is influenced using an edger , especially with comparatively large width reductions, so-called fish tail ends arise at the end of the tape, which at Threading out the tape in the rear scaffolds are unfavorable and cause warping being able to lead.
- By evaluating the contour of the strip end can continue alternatively or additionally the emergence of such fish tail ends be recognized early so that appropriate countermeasures, especially corrective interventions on the edger can.
- the edger is provided as an actuator. Long tabs can be raised Width reductions on abs. Band end to be fought.
- the detection of the contour of the strip end of the rolled stock can thereby at a suitable location within the rolling mill and with suitable means, for example via a number of width sensors.
- suitable means for example via a number of width sensors.
- a contactless, in particular an optical, determination of the Contour of the band end is provided, with an advantageous embodiment Camera can be used.
- the evaluation of the contour of the strip end can be done in that the position of the maximum in the contour in Width direction of the strip-shaped rolling stock is determined, the manipulated variable for the swivel angle with regard to a predefinable target position for the maximum is specified as a reference variable.
- the contour of the tape end is evaluated using a polynomial, with which a number of in total the contour of the tape end representative measured values is approximated.
- the measured values can be digitized, for example, using an optical camera can be determined, the approximation by the polynomial in one downstream computer module can take place.
- the polynomial that best approximates the measured values obtained is the Contour of the tape end with a comparatively small number of further processing parameters can be evaluated.
- Such a polynomial can also be the so-called wedge portion of the band end contour be taken into account in a particularly favorable manner.
- the wedge is the measure by which the preferred direction of the contour of the End of the strip deviates from the width direction of the rolling stock.
- the wedge can also be determined alternatively by evaluating those points, where the tape ends and the contour of the actual tape end pass. The evaluation and determination of these points is through the The polynomial can be used in a particularly favorable manner.
- the contour of the tape head of the tape head determined in the extension plane Rolled stock that has already been rolled when specifying the control values for the roll stands considered. Because of the comparatively smaller material flow in Longitudinal direction of the rolling stock towards the strip head to the shape possible Error in the choice of the swivel angle for the roll stands less than with the contour of the tape end; taking into account the contour of the tape head nevertheless contributes very well to the completion of the setting of the control values information that can be evaluated for the swivel angle.
- Swivel angle can be achieved by in an advantageous further development in the specification of or each manipulated variable for the swivel angle of the roll stands Width direction of the strip determined temperature profile of the rolling stock and / or the strip profile in front of and / or behind the rolling mill is taken into account.
- the swivel angle is therefore one for a roll stand predefined manipulated variable when specifying a manipulated variable for one or each
- the following roll stand taken into account in the rolling direction is taken into account.
- the subsequent rolling stands in the rolling mill are also pivoted, whereby their tracking for compensation by by pivoting the comparatively front roll stand caused interference is provided.
- the one specified for a roll stand is specified Control value when specifying the control value for the following one Roll stand in a for the intended decrease in the thickness of the rolling stock at Transition into this subsequent mill stand proportional dimensions considered.
- the or each manipulated variable for the Swivel angle of the respective roll stand advantageously tracked in such a way that there is a contour symmetrical to the longitudinal central axis of the rolling stock of the tape end. It can be used as a design criterion for one of the Regulation assigned to the rolling mill can be provided by suitable specification a deviation of the control values for the swivel angle of the roll stands Contour of the end of the band can be reduced to a minimum from an asymmetrical contour.
- A can be used as a reference variable for a control unit assigned to the rolling mill Predeterminable wedge shape or taper of the band in its plane of extension or alternatively the position of the maximum of the contour of the strip end be provided in the width direction.
- the or each manipulated variable for the Swivel angle of the respective roll stand advantageously tracked in such a way that the contour of the tape end is at its maximum in the width direction of the tape occupies a position that can be specified as a setpoint.
- a particularly high degree of flexibility can be achieved when processing the rolling stock, by the setpoint for the position of the maximum in the width direction or the setpoint for the band end wedge in the extension plane in particular advantageous development depending on the position of each Roll stand in the rolling mill is specified.
- an already asymmetrical design, seen in the direction of the strip cross-section strip-shaped rolling stock can be processed in a particularly advantageous manner by in the front roll stand seen in the rolling direction, the swivel angle is initially set such that the wedge shape of the incoming band-shaped Rolled material is returned and the rolled material thus in one of its longitudinal central axis symmetrical cross-sectional shape is brought.
- the swivel angle is initially set such that the wedge shape of the incoming band-shaped Rolled material is returned and the rolled material thus in one of its longitudinal central axis symmetrical cross-sectional shape is brought.
- the strip cross-sectional profiles of the in the rolling mill incoming and out of this rolled stock measured.
- control unit that has a manipulated variable for one or each one Roll stand or an actuator associated with an edger, advantageously for the swivel angle of one or each roll stand, depending on the in the extent of the contour of the strip end of a strip that has already been rolled Rolling stock pretends.
- the control unit is expediently on the output side connected with adjusting devices for adjusting the swivel angle.
- this is advantageously on the input side with a number of each a rolling mill associated with measuring devices for determining the contour of the strip end and / or the strip head of the rolling stock already rolled in connected to its extension level.
- the measuring devices can, for example arranged in an elevated position on the respectively assigned roll stand be so that the determination of the contour of the tape end in top view on the rolling stock is made possible.
- Suitable width sensors can be used to measure the contour of the strip end be provided, via which the determination of the width of the rolling stock in dependence is made possible by a longitudinal coordinate.
- the respective one is preferred Measuring device for non-contact measurement as an optical device, in particular trained as a camera.
- Control unit in a further advantageous embodiment on the input side with a Temperature measuring device for determining the temperature profile of the strip in its width direction and / or with a number of strip cross-sectional profile measuring devices connected.
- the advantages achieved by the invention are in particular that taking into account the contour of the strip end of a previously rolled rolling stock in its extension level when specifying the manipulated values for the Swivel angle of the roll stands for the rolling process and the rolling result disadvantageous incorrect settings when pivoting the roll stands on especially simple and reliable way to compensate. It is in the kind of a learning or adapting system, the detection of incorrect settings based on the evaluation of previous rolling results, where the contour of the strip end as a direct effect of the material flow in the strip-shaped rolling stock a particularly precise and reliable Conclusion of possible incorrect settings in the swiveling angles of the roll stands allows. In addition, the specification of management parameters for the setting of the swivel angle depending on the position of each Roll stand in the rolling mill a particularly flexible processing of the rolling stock take place so that with reliably high rolling quality also different preformed rolling stock is machinable.
- the rolling mill 1 comprises a number of roll stands 2, which in the exemplary embodiment are each designed as multi-roll stands.
- Each includes Roll stand 2 each have a first work roll 4 and a second work roll 6, which together form a roll gap 8 and for the passage of one Rolled stock 10 are formed.
- the work rolls 4, 6 are on their rolling stock 10 sides facing away from an associated support roller 12 or 14 supported, which in turn each in a roll stand, not shown is held.
- the rolling mill 1 is for processing one in the manner of a strip in one Extension plane extended rolling stock 10 is formed.
- the band-like Rolld stock 10 has a primarily two-dimensional shape.
- Strip run ie the passage of the rolling stock 10 through the roll stands 2, really important.
- the rolling mill 1 is designed that affects the strip run during the actual rolling process can be.
- each roll stand 2 is one by in the figure a line indicated, substantially perpendicular to that indicated by arrow 16 Rolling direction x oriented axis of rotation 18 adjustable or pivotable educated.
- each rolling stand 2 is assigned an actuating unit 20, one of which is not detailed represented employment of the respective roll stand 2.
- the rolling mill 1 is provided with a control unit 22, which among other things for automated influencing of the pivot angle of the roll stands 2 is provided is.
- the control unit 22 is on the output side for the transmission of a Control value S in each case via a data line 24 with the actuating device 20 Roll stand 2 connected.
- the rolling mill 1 and in particular its control unit 22 are for a particularly reliable compliance with a proper Strip run designed during the rolling process.
- control unit 22 is designed such that it sets the control values S for the Swivel angle of the roll stands 2 as a function of that in the plane of extension of an already rolled rolling stock 10 determined from its Band end 30 specifies.
- An example of such a contour of the band end 30 is shown in Figure 2 for a strip-like rolling stock 10 in plan view.
- the rolling stock 10 is only in sections and in the area of its Band end 30 shown.
- the contour of the band end 30 in the plane of extension the rolling stock 10 can be a comparatively irregular and Compared to the longitudinal center axis 32 of the rolling stock 10 have an asymmetrical shape.
- Such asymmetries can be faulty in particular as a result of set swivel angles occur in one or more roll stands 2.
- An incorrectly set swivel angle can be compared in one to the other rolling stock 10 locally different material flow in the longitudinal direction of tape 10 result.
- Such a locally different material flow strikes in a cumulative manner especially at the strip end 30 of the rolling stock 10 in the form of an asymmetrical contour.
- the determination of the maximum of the contour of the strip end 30 in the width direction y of the rolling stock 10 may be provided.
- the contour of the In this case, the end of the tape 30 can be evaluated as a sequence of points.
- the control unit 22 could set the control values S for the swivel angle Output mill stands 2 so that the maximum in the contour of the strip end 30 in the manner of a symmetrical contour in a position in the immediate vicinity Sets near the longitudinal center axis 32 of the rolling stock 10.
- Alternative would be also the evaluation of the contour of the strip end 30 via spline functions possible.
- the contour of the strip end is evaluated 30 provided with the aid of a polynomial. It becomes a polynomial, whose course 34 is shown in dashed lines in Figure 2, chosen such that its Course 34 the actual determined on the basis of a number of measured values Contour of the tape end 30 approximates as best as possible. With the mathematical determination of the polynomial is a greater weighting of the measuring points in the band center area 35 advantageous. Further evaluation can be carried out via this polynomial the contour of the tape end 30 with only a comparatively small number of parameters.
- the position of the maximum 36 in the course 34 of the polynomial in the width direction y of the rolling stock 10 are used.
- the so-called wedge of the band end 30 is also determined become.
- the rolling mill 1 is as shown in FIG Figure 1 is shown, provided with a number of measuring devices 50.
- the Measuring devices 50 can be configured, for example, as width sensors his. In the embodiment, however, is a non-contact optical Detection of the contour of the tape end 30 is provided.
- the measuring devices 50 designed as optical devices, namely as cameras.
- the measuring devices 50 are between two roll stands 2 in a height arranged so that a determination of the contour of the tape end 30 in plan view of the rolling stock 10 is made possible.
- the control unit 22 is there on the input side for taking over the data supplied by the measuring devices 50, for the contour of the strip end 30 characteristic measured values on the input side connected to the measuring devices 50.
- the measuring devices designed as cameras are 50 dimensioned and positioned so that the entire contour of the tape end 30, ie the contour across the entire width of the rolling stock 10, in Measuring range of the respective measuring device 50 is located and thus detected simultaneously can be.
- Measuring device 50 be positioned such that their measuring range does not cover the entire Width of the rolling stock 10 detected.
- it can be sequential Scanning provided for determining the contour of the tape end 30 be that the respective measuring device 50 concerned a series of partially overlapping single images, which in their entirety is complete Play the contour of the tape end 30.
- control unit 22 is on the input side with a temperature measuring device 52 connected.
- the temperature measuring device 52 is used for the determination a temperature profile of the rolling stock 10 in its width direction y.
- control unit 22 is on the input side with a first profile measuring device 54 and connected to a second profile measuring device 56.
- the profile measuring device 54 is seen in the rolling direction of the rolling stock before arranged first roll stand 2 and is used to determine the cross-sectional profile of the rolling stock 10 entering the rolling mill 1.
- the profile measuring device 56 however, seen in the rolling direction of the rolling stock 10, is behind the last one Roll stand 2 arranged and to determine the cross-sectional profile of the Rolling stock 10 emerging from rolling mill 1 is provided.
- a for is reliably observed a high quality rolling result favorable strip running an adjustment the swivel angle of each roll stand 2 by specifying suitable control values S. through the control unit 22.
- the rolling mill 1 is in the manner of a learning or adaptive system, the control values S taking into account of the rolling result can be specified for rolled products that have already been rolled.
- the contour of the strip end 30 is determined via the measuring devices 50 of a rolling stock 10 that has already been rolled.
- the contour can be used for a Rolling stock 10 can be determined that has left the rolling mill 1 in total, or also for a rolling stock 10 that has already emerged from one of the roll stands 2 is, but still has to go through the subsequent roll stands 2.
- the Measuring device 50 When determining the contour of the strip end 30 is based on the Measuring device 50 delivered measured values that approximate the contour course Polynomial generated.
- This polynomial is used to check 2 for each roll stand, whether a guide variable provided for this roll stand 2 is in the tolerance range of a predefinable setpoint. It can be used as a benchmark for example the position of the maximum of the polynomial in the width direction y of the rolling stock 10 or also characterizing the wedge nature of the rolling stock 10 Length difference 40 can be evaluated. With regard to that accordingly The preset command variable becomes the manipulated values S for the roll stands 2 tracked in such a way that the corresponding target values are increasingly approximated become.
- the control unit 22 is also designed so that a control value for the swivel angle of a roll stand 2 when specifying the control values for the Swivel angle of the subsequent roll stands 2 is also taken into account. It is provided that the by the pivoting of a roll stand 2nd within the rolling mill 1 in the subsequent rolling stands 2 Malfunction in the tape run is largely compensated for. there the subsequent rolling stands 2 are pivoted in one to in Rolling direction decreasing thickness of the rolling stock 10 proportional dimensions.
- the control unit 22 also gives control values for the bending forces of the work rolls 4, 6 in front, and is associated with the work rolls 4, 6, Connected control elements not shown. These control values for the bending forces of the work rolls 4, 6 are based on the determined contour of the tape end 30 tracked and corrected. For this, the determined Contour of the tape end 30 in the control unit 22 taking into account the Band extension of the course of the bandwidth in the subsequent ones Roll stands 2 calculated. Taking these width parameters into account of the roll bending behavior are the manipulated values for the bending force of the Work rolls 4, 6 predetermined such that unevenness on the rolling stock 10 and thus tape roll-ups should not occur.
- control unit 22 can also use the determined contour of the tape end 30 when specifying a tensile force for a looper and / or a manipulated value for a upstream of the rolling mill 1, not shown Be configured for upsetter.
- the process is not only for a rolling mill consisting of several stands applicable, but also for reversing stands in which several stitches be rolled.
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Description
- Figur 1
- schematisch eine Walzstraße mit einer Anzahl von Walzgerüsten, und
- Figur 2
- das Bandende eines bandförmig ausgebildeten Walzguts in Aufsicht.
- Hi:
- die Dicke des Walzguts 10 am zu betrachtenden Walzgerüst 2 mit der Positionsnummer i,
- ΔLi:
- den Keilanteil oder die Längendifferenz 40 des Walzguts 10 am Walzgerüst 2 mit der Positionsnummer i,
- Li:
- eine von der Positionsnummer i des Walzgerüsts 2 abhängige Referenzlänge, auf der im Walzgut 10 ein Materialfluß in Walzrichtung oder Längsrichtung des Walzguts 10 stattfindet,
- fl:
- einen Faktor zur Bewertung des Materialflusses im Walzgut 10 in dessen Längsrichtung,
- fu:
- in der Art eines Schwenkmoduls einen Umrechnungsfaktor zur Überführung einer Bandkeiligkeit zu einem Stellwert für die Anstellposition.
- 1
- Walzstraße
- 2
- Walzgerüst
- 4,6
- Arbeitswalzen
- 8
- Walzspalt
- 10
- Walzgut
- 12, 14
- Stützwalzen
- 16
- Pfeil
- 18
- Drehachse
- 20
- Stelleinheit
- 22
- Regeleinheit
- 30
- Bandende
- 32
- Längs-Mittelachse
- 34
- Verlauf der Glättungsfunktion (z.B. Polynom)
- 35
- Bandmittenbereich
- 36
- Maximum
- 38
- Linie
- 40
- Längendifferenz bzw. Maß für die Bandendenkeiligkeit in
- der
- Erstreckungsebene
- 50
- Meßeinrichtung
- 52
- Temperaturmeßeinrichtung
- 54, 56
- Profilmeßeinrichtungen
- S
- Stellwert
- x
- Walzrichtung
- y
- Breitenrichtung
- i
- Positionsnummer
Claims (22)
- Verfahren zum Betreiben einer Walzstraße (1) zum Walzen eines bandartigen Walzgutes (10) mit einem Staucher sowie einer Anzahl von in einer Walzrichtung (x) gesehen hintereinander angeordneten Walzgerüsten (2), wobei eine Anzahl von Stelleinheiten (20) zum Beeinflussen der Kontur des Bandendes (30) zum Einsatz kommt,
dadurch gekennzeichnet, daß ein Stellwert (S) für eine oder jede einem Walzgerüst (2) oder einem Staucher zugeordnete Stelleinheit (20) in Abhängigkeit von der ermittelten Kontur des Bandendes (30) eines bereits gewalzten Walzguts (10) vorgegeben wird. - Verfahren nach Anspruch 1,
dadurch gekennzeichnet, daß in Abhängigkeit von der ermittelten Kontur des Bandendes (30) des bereits gewalzten Walzguts (10) ein Stellwert (S) für den Schwenkwinkel eines oder jedes Walzgerüsts (2) um eine im wesentlichen senkrecht zur Walzrichtung (x) orientierte Drehachse (18) vorgegeben wird. - Verfahren nach Anspruch 1 oder 2,
dadurch gekennzeichnet, daß die Kontur des Bandendes (30) optisch ermittelt wird. - Verfahren nach einem der Ansprüche 1 bis 3,
dadurch gekennzeichnet, daß der oder jeder Stellwert (S) anhand einer Auswertung eines Polynoms vorgegeben wird, das eine Anzahl von in ihrer Gesamtheit die Kontur des Bandendes (30) charakterisierenden Meßwerten annähert. - Verfahren nach einem der Ansprüche 1 bis 4,
dadurch gekennzeichnet, daß bei der Vorgabe des oder jedes Stellwertes (S) die ermittelte Kontur des Bandkopfs des bereits gewalzten Walzguts (10) berücksichtigt wird. - Verfahren nach einem der Ansprüche 1 bis 5,
dadurch gekennzeichnet, daß bei der Vorgabe des oder jedes Stellwertes (S) ein in Breitenrichtung (y) des Bandes ermitteltes Temperaturprofil des Walzguts (10) und/oder ein in Breitenrichtung (y) des Bandes ermitteltes Dickenprofil berücksichtigt wird. - Verfahren nach einem der Ansprüche 1 bis 6,
dadurch gekennzeichnet, daß bei der Vorgabe eines Stellwertes (S) für ein Walzgerüst (2) die Dikke des Walzgutes (10) bei dessen Durchlauf durch dieses Walzgerüst (2) berücksichtigt wird. - Verfahren nach einem der Ansprüche 1 bis 7,
dadurch gekennzeichnet, daß ein für ein Walzgerüst (2) vorgegebener Stellwert (S) bei der Vorgabe eines Stellwertes (S) für ein oder jedes in Walzrichtung (x) gesehen nachfolgendes Walzgerüst (2) mitberücksichtigt wird. - Verfahren nach Anspruch 8,
dadurch gekennzeichnet, daß der für ein Walzgerüst (2) vorgegebene Stellwert (S) bei der Vorgabe des Stellwertes (S) für das jeweils nachfolgende Walzgerüst (2) in einem zur vorgesehenen Abnahme der Dicke des Walzgutes (10) beim Übergang in dieses nachfolgende Walzgerüst (2) proportionalen Maße berücksichtigt wird. - Verfahren nach einem der Ansprüche 1 bis 9,
dadurch gekennzeichnet, daß der oder jeder Stellwert (S) derart nachgeführt wird, daß sich eine zur Längs-Mittelachse (32) des Walzguts (10) symmetrische Kontur des Bandendes (30) einstellt. - Verfahren nach einem der Ansprüche 1 bis 10,
dadurch gekennzeichnet, daß der oder jeder Stellwert (S) derart nachgeführt wird, daß die Kontur des Bandendes (30) an einer als Sollwert vorgebbaren Position in Breitenrichtung (y) des Bandes ein Maximum (36) einnimmt. - Verfahren nach Anspruch 11,
dadurch gekennzeichnet, daß ein von der Position des jeweiligen Walzgerüsts (2) in der Walzstraße (1) abhängiger Sollwert für die Position des Maximums (36) in Breitenrichtung (y) und/oder für die Keiligkeit der Kontur des Bandendes (30) vorgegeben wird. - Walzstraße (1) zum Walzen eines bandartigen Walzguts (10) mit einer Anzahl von in einer Walzrichtung (x) gesehen hintereinander angeordneten Walzgerüsten (2), denen jeweils eine Stelleinheit (20) zum Beeinflussen der Kontur des Bandendes (30) zugeordnet ist,
gekennzeichnet durch
eine Regeleinheit (22), die einen Stellwert (S) für eine oder jede einem Walzgerüst (2) oder einem Staucher zugeordnete Stelleinheit (20) in Abhängigkeit von der ermittelten Kontur des Bandendes (30) eines bereits gewalzten Walzguts (10) vorgibt. - Walzstraße (1) nach Anspruch 13,
dadurch gekennzeichnet, daß die Regeleinheit (22) in Abhängigkeit von der ermittelten Kontur des Bandendes (30) des bereits gewalzten Walzguts (10) einen Stellwert (S) für den Schwenkwinkel eines oder jedes Walzgerüsts (2) um eine im wesentlichen senkrecht zur Walzrichtung (x) orientierte Drehachse (18) vorgibt. - Walzstraße (1) nach Anspruch 13 oder 14,
dadurch gekennzeichnet, daß die Regeleinheit (22) eingangsseitig mit einer Anzahl von jeweils einem Walzgerüst (2) zugeordneten Meßeinrichtungen (50) zur Ermittlung der Kontur des Bandendes (30) und/oder des Bandkopfs in der Erstreckungs- ebene verbunden ist. - Walzstraße (1) nach Anspruch 15,
dadurch gekennzeichnet, daß die oder jede Meßeinrichtung (50) als optische Einrichtung, vorzugsweise als Kamera, ausgebildet ist. - Walzstraße (1) nach einem der Ansprüche 13 bis 16,
dadurch gekennzeichnet, daß die Regeleinheit (22) eingangsseitig mit einer Temperaturmeßeinrichtung (52) zur Ermittlung eines Temperaturprofils des Walzguts in seiner Breitenrichtung (y) und/oder mit einer Anzahl von Profilmeßeinrichtungen (54, 56) zur Ermittlung eines Bandprofils in Breitenrichtung (y) verbunden ist. - Walzstraße (1) nach einem der Ansprüche 13 bis 17,
dadurch gekennzeichnet, daß die vorderen Walzgerüste so schwenkbar sind, daß ein keilfreies Fertigbandprofil erzeugbar ist. - Walzstraße (1) nach einem der Ansprüche 13 bis 18,
dadurch gekennzeichnet, daß Korrekturglieder für die Looperzugkraft und die Arbeitswalzen-Biegekraft in Abhängigkeit der ermittelten Bandbreite vorgesehen sind. - Walzstraße (1) nach einem der Ansprüche 13 bis 19,
dadurch gekennzeichnet, daß in der Walzstraße ein Stauchgerüst angeordnet ist zwecks Einstellung des optimierten Bandrechtecks. - Walzstraße (1) nach Anspruch 20,
gekennzeichnet durch
eine Überwachungseinheit der maximalen Stauchabnahme zwecks Vermeidung von Fischschwänzen. - Walzstraße (1) nach einem der Ansprüche 13 bis 21,
dadurch gekennzeichnet, daß die Walzgerüste der Walzstraße Profilstellglieder zur Korrektur des Bandprofils aufweisen, um die Bandendenform beeinflussen zu können.
Applications Claiming Priority (3)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
DE10116273A DE10116273A1 (de) | 2001-03-31 | 2001-03-31 | Verfahren zum Betreiben einer Walzstraße sowie eine entsprechend ausgebildete Walzstraße |
DE10116273 | 2001-03-31 | ||
PCT/EP2002/002131 WO2002078872A1 (de) | 2001-03-31 | 2002-02-28 | Verfahren zum betreiben einer walzstrasse sowie eine entsprechend ausgebildete walzstrasse |
Publications (2)
Publication Number | Publication Date |
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EP1372875A1 EP1372875A1 (de) | 2004-01-02 |
EP1372875B1 true EP1372875B1 (de) | 2004-09-15 |
Family
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EP02719952A Expired - Lifetime EP1372875B1 (de) | 2001-03-31 | 2002-02-28 | Verfahren zum betreiben einer walzstrasse sowie eine entsprechend ausgebildete walzstrasse |
Country Status (15)
Country | Link |
---|---|
US (1) | US6983631B2 (de) |
EP (1) | EP1372875B1 (de) |
JP (1) | JP4383745B2 (de) |
KR (1) | KR100841261B1 (de) |
CN (1) | CN1235696C (de) |
AT (1) | ATE276055T1 (de) |
BR (1) | BR0207557B1 (de) |
CA (1) | CA2440210C (de) |
CZ (1) | CZ305146B6 (de) |
DE (2) | DE10116273A1 (de) |
RU (1) | RU2283197C2 (de) |
TW (1) | TW531456B (de) |
UA (1) | UA76143C2 (de) |
WO (1) | WO2002078872A1 (de) |
ZA (1) | ZA200305566B (de) |
Cited By (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
EP2691188B1 (de) | 2011-05-24 | 2015-06-17 | Siemens Aktiengesellschaft | Betriebsverfahren für eine walzstrasse |
Families Citing this family (14)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
AT500764A1 (de) * | 2004-05-19 | 2006-03-15 | Voest Alpine Ind Anlagen | Verfahren zur berechnung der geometrischen form von walzgut |
AT501314B1 (de) * | 2004-10-13 | 2012-03-15 | Voest Alpine Ind Anlagen | Verfahren und vorrichtung zum kontinuierlichen herstellen eines dünnen metallbandes |
DE102004060342B3 (de) * | 2004-12-15 | 2006-07-27 | Siemens Ag | Betriebsverfahren für eine Walzstraße und hiermit korrespondierende Einrichtungen |
DE102005055106A1 (de) * | 2005-11-18 | 2007-05-24 | Sms Demag Ag | Verfahren und Walzstraße zum Verbessern des Ausfädelns eines Metallwalzbandes, dessen Walzband-Ende mit Walzgeschwindigkeit ausläuft |
DE102007053523A1 (de) * | 2007-05-30 | 2008-12-04 | Sms Demag Ag | Vorrichtung zur Beeinflussung der Temperaturverteilung über der Breite |
DE102007035283A1 (de) | 2007-07-27 | 2009-01-29 | Siemens Ag | Verfahren zur Einstellung eines Zustands eines Walzguts, insbesondere eines Vorbands |
DE102008007247A1 (de) * | 2007-09-13 | 2009-03-19 | Siemens Aktiengesellschaft | Betriebsverfahren für eine Walzstraße mit Krümmungserkennung |
DE102007050891A1 (de) * | 2007-10-24 | 2009-04-30 | Siemens Ag | Auf der Streuung einer Istgröße eines Walzguts basierende Adaptierung eines Reglers in einem Walzwerk |
DE102008049180A1 (de) * | 2008-09-26 | 2010-04-01 | Sms Siemag Aktiengesellschaft | Walzanlage zum Walzen von bandförmigem Walzgut |
RU2492005C1 (ru) * | 2012-03-30 | 2013-09-10 | Федеральное государственное бюджетное образовательное учреждение высшего профессионального образования "Липецкий государственный технический университет" (ЛГТУ) | Способ горячей прокатки полос |
US10625317B2 (en) * | 2015-03-16 | 2020-04-21 | Sms Group Gmbh | Method for producing metal strips |
RU2615670C1 (ru) * | 2015-10-05 | 2017-04-06 | Федеральное государственное бюджетное образовательное учреждение высшего профессионального образования "Липецкий государственный технический университет" (ЛГТУ) | Способ горячей прокатки полос |
EP3599038A1 (de) * | 2018-07-25 | 2020-01-29 | Primetals Technologies Austria GmbH | Verfahren und vorrichtung zur ermittlung der seitlichen bandkontur eines laufenden metallbandes |
EP3854494B1 (de) * | 2020-01-24 | 2022-09-28 | Primetals Technologies Germany GmbH | Frequenzabhängige verteilung von stellgrössen zur veränderung des walzgutquerschnitts in einer walzstrasse |
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US4063076A (en) * | 1975-12-26 | 1977-12-13 | Hitachi, Ltd. | Method of automatic width control of hot rolled strips |
US4346575A (en) * | 1980-09-08 | 1982-08-31 | Sumitomo Metal Industries, Ltd. | Method of width control in hot strip mill |
JP2562011B2 (ja) * | 1984-05-10 | 1996-12-11 | 三菱電機株式会社 | 連続圧延機における形状制御方法 |
JPS60255209A (ja) * | 1984-05-30 | 1985-12-16 | Mitsubishi Heavy Ind Ltd | 圧延機におけるエツジヤ開度制御方法 |
JPS63183713A (ja) * | 1986-09-05 | 1988-07-29 | Sumitomo Metal Ind Ltd | 蛇行制御方法 |
JPH01205819A (ja) * | 1988-02-10 | 1989-08-18 | Kawasaki Steel Corp | シート状体の形状検出方法及び装置並びにシート状体の形状矯正方法 |
DE4309986A1 (de) * | 1993-03-29 | 1994-10-06 | Schloemann Siemag Ag | Verfahren und Vorrichtung zum Walzen eines Walzbandes |
JPH06292915A (ja) * | 1993-04-08 | 1994-10-21 | Nippon Steel Corp | 鋼板尾端検出による板形状精度向上方法 |
DE19644132B4 (de) * | 1996-10-23 | 2005-07-07 | Siemens Ag | Verfahren zum Optimieren der Bandbreitenverteilung an den Enden eines eine Walzstraße durchlaufenden Bandes |
DE19744504B4 (de) * | 1997-10-09 | 2004-05-06 | Sms Demag Ag | Walzverfahren für Bandmaterial in einer Walzstraße |
US6158260A (en) * | 1999-09-15 | 2000-12-12 | Danieli Technology, Inc. | Universal roll crossing system |
-
2001
- 2001-03-31 DE DE10116273A patent/DE10116273A1/de not_active Withdrawn
-
2002
- 2002-02-19 TW TW091102764A patent/TW531456B/zh not_active IP Right Cessation
- 2002-02-28 AT AT02719952T patent/ATE276055T1/de active
- 2002-02-28 RU RU2003131972/02A patent/RU2283197C2/ru active
- 2002-02-28 DE DE50201031T patent/DE50201031D1/de not_active Expired - Lifetime
- 2002-02-28 WO PCT/EP2002/002131 patent/WO2002078872A1/de active IP Right Grant
- 2002-02-28 JP JP2002577126A patent/JP4383745B2/ja not_active Expired - Fee Related
- 2002-02-28 CZ CZ2003-2399A patent/CZ305146B6/cs not_active IP Right Cessation
- 2002-02-28 CA CA2440210A patent/CA2440210C/en not_active Expired - Fee Related
- 2002-02-28 BR BRPI0207557-1A patent/BR0207557B1/pt not_active IP Right Cessation
- 2002-02-28 US US10/469,636 patent/US6983631B2/en not_active Expired - Lifetime
- 2002-02-28 CN CNB028076516A patent/CN1235696C/zh not_active Expired - Fee Related
- 2002-02-28 UA UA2003109764A patent/UA76143C2/uk unknown
- 2002-02-28 KR KR1020037012859A patent/KR100841261B1/ko not_active Expired - Fee Related
- 2002-02-28 EP EP02719952A patent/EP1372875B1/de not_active Expired - Lifetime
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2003
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Cited By (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
EP2691188B1 (de) | 2011-05-24 | 2015-06-17 | Siemens Aktiengesellschaft | Betriebsverfahren für eine walzstrasse |
Also Published As
Publication number | Publication date |
---|---|
ATE276055T1 (de) | 2004-10-15 |
JP2004529773A (ja) | 2004-09-30 |
DE10116273A1 (de) | 2002-10-10 |
JP4383745B2 (ja) | 2009-12-16 |
TW531456B (en) | 2003-05-11 |
BR0207557B1 (pt) | 2010-06-29 |
WO2002078872A1 (de) | 2002-10-10 |
UA76143C2 (en) | 2006-07-17 |
DE50201031D1 (de) | 2004-10-21 |
US20040079127A1 (en) | 2004-04-29 |
KR20040011491A (ko) | 2004-02-05 |
BR0207557A (pt) | 2004-09-14 |
US6983631B2 (en) | 2006-01-10 |
CN1500016A (zh) | 2004-05-26 |
CZ305146B6 (cs) | 2015-05-20 |
RU2283197C2 (ru) | 2006-09-10 |
CZ20032399A3 (cs) | 2004-02-18 |
CN1235696C (zh) | 2006-01-11 |
EP1372875A1 (de) | 2004-01-02 |
CA2440210A1 (en) | 2002-10-10 |
ZA200305566B (en) | 2003-10-22 |
RU2003131972A (ru) | 2005-02-10 |
KR100841261B1 (ko) | 2008-06-25 |
CA2440210C (en) | 2010-05-11 |
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