EP1320425A1 - Method and device for operating a hot rolling train with at least one edger - Google Patents
Method and device for operating a hot rolling train with at least one edgerInfo
- Publication number
- EP1320425A1 EP1320425A1 EP01980167A EP01980167A EP1320425A1 EP 1320425 A1 EP1320425 A1 EP 1320425A1 EP 01980167 A EP01980167 A EP 01980167A EP 01980167 A EP01980167 A EP 01980167A EP 1320425 A1 EP1320425 A1 EP 1320425A1
- Authority
- EP
- European Patent Office
- Prior art keywords
- strip
- infrared line
- line sensor
- end position
- sensor
- 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.)
- Granted
Links
- 238000000034 method Methods 0.000 title claims abstract description 18
- 238000005098 hot rolling Methods 0.000 title claims abstract description 14
- 230000005855 radiation Effects 0.000 claims abstract description 9
- 238000005457 optimization Methods 0.000 claims abstract description 6
- 230000006835 compression Effects 0.000 claims description 23
- 238000007906 compression Methods 0.000 claims description 23
- 238000001514 detection method Methods 0.000 claims description 10
- 230000015572 biosynthetic process Effects 0.000 description 6
- 238000005096 rolling process Methods 0.000 description 6
- 241000251468 Actinopterygii Species 0.000 description 3
- 210000000988 bone and bone Anatomy 0.000 description 3
- 230000007613 environmental effect Effects 0.000 description 3
- 239000000463 material Substances 0.000 description 3
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 description 3
- 238000012937 correction Methods 0.000 description 2
- 238000010586 diagram Methods 0.000 description 2
- 241000283153 Cetacea Species 0.000 description 1
- 229910000831 Steel Inorganic materials 0.000 description 1
- 230000004913 activation Effects 0.000 description 1
- 230000002411 adverse Effects 0.000 description 1
- 239000011324 bead Substances 0.000 description 1
- 238000011161 development Methods 0.000 description 1
- 230000018109 developmental process Effects 0.000 description 1
- 238000003708 edge detection Methods 0.000 description 1
- 230000002349 favourable effect Effects 0.000 description 1
- 238000005259 measurement Methods 0.000 description 1
- 230000001151 other effect Effects 0.000 description 1
- 239000010959 steel Substances 0.000 description 1
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
- B21B37/16—Control of thickness, width, diameter or other transverse dimensions
- B21B37/22—Lateral spread control; Width control, e.g. by edge 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
- B21B37/72—Rear end control; Front end control
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B21—MECHANICAL METAL-WORKING WITHOUT ESSENTIALLY REMOVING MATERIAL; PUNCHING METAL
- B21B—ROLLING OF METAL
- B21B2273/00—Path parameters
- B21B2273/12—End of product
Definitions
- the invention relates to a method for operating a hot rolling mill with at least one upsetting stand and at least one sensor for determining the strip end position, an optimization of the strip width distribution of at least one strip end of a rolled strip being achieved with a computing system.
- the invention further relates to a device for operating a hot rolling mill with at least one upsetting stand and at least one sensor for determining the strip end position, an optimization of the strip width distribution of at least one strip end of a rolled strip being achieved with a computing system.
- the rolled strip is usually narrower at the ends of the strip, i.e. the strip head and the strip base, than in the middle section due to the asymmetrical material flow and other effects.
- width constrictions at the strip ends are obtained after an upsetting process, ie when the rolled strip passes through the upset frame.
- the state of tension during the upsetting process leads to a so-called sharpening of the band head and thus to width dimensions which, depending on the upsetting dimension, are far below the setting dimension of the upsetting frame.
- this forming process also causes at the rear end of the belt, i.e. at the base of the strip, negative deviations in width, the subsequent flat stitch in a horizontal stand resulting in a rolled strip contour, which is known as fish tail formation.
- the under-widths or width constrictions occurring at the belt ends are primarily due to the asymmetrical compressive and shear stresses in the area of the belt ends caused by the compression structures, which lead to an increased material longitudinal flow in the belt edge area due to the lack of material support.
- the setting position of the compression stands during the strip pass is adjustable, the inclination of the compression stand as it moves through the rolled strip ends in the form of short swings, so-called “short strokes”, relative to the middle part
- This adjustment of the adjustment at the strip ends of the rolled strip, ie at the strip head and at the strip foot, is carried out in accordance with a driving curve which can be defined by predetermined driving curve parameters.
- the object of the invention is to find a method for operating a hot rolling mill with at least one compression stand and at least one sensor for determining the strip end position, with which a more reliable determination of the strip end position of the rolled strip is achieved.
- the invention is also based on the object of finding a device for operating a hot rolling mill with at least one compression frame and at least one sensor for determining the strip end position, which enables the strip end position to be determined more reliably from the rolled strip.
- the object is achieved by a method according to claim 1.
- the object is further achieved according to the invention by a device according to claim 7.
- Advantageous further developments of the method and the device are specified in the further claims.
- the method according to the invention according to claim 1 comprises a cell-shaped detection of the infrared radiation of the rolled strip for determining the strip end position.
- the device according to the invention according to claim 7 for operating a rolling mill with at least one compression frame and at least one sensor for determining the strip end position, an optimization of the strip width distribution of at least one strip end of a rolled strip using a computing system is achieved comprises a sensor which is designed as an infrared line sensor which is arranged in front of and / or behind the compression frame.
- the problem described at the beginning of determining the strip end position of the rolled strip, which is caused by poor environmental conditions, e.g. is made difficult by water or even scale on the rolling belt, is now solved with an infrared line sensor.
- the infrared line sensor detects the infrared radiation emitted by the rolled strip in a predetermined measuring range.
- An advantageous embodiment when using the infrared line sensor lies in the fact that the predeterminable measuring range extends transversely to the tape running direction.
- the advantage of this alignment, which is selected transversely to the tape run is that in addition to the tape end detection, i.e. Band head (the first end of the band arriving in the edger) and band foot (the end of the band ending in the edger), a band edge detection is also carried out.
- the strip width position based on the center of the strip running in the longitudinal direction of the strip, is determined.
- a further advantageous embodiment of the use of the infrared line sensor lies in the fact that the predeterminable measuring range runs longitudinally to the tape running direction. With this alignment, cold spots lying transversely to the rolled strip do not influence the strip end detection, since the measuring range set along the strip running direction covers an extended longitudinal range of the rolled strip, and thus also enables plausibility checks. At the same time, these plausibility checks represent a higher level of security and accuracy of the measured value recognition.
- the strip end position is detected in front of the compression frame.
- the strip end position is detected after the compression frame.
- the strip end position is detected before and after the compression frame.
- FIG. 1 shows a hot rolling mill (reversing roughing mill) with a first embodiment of the device according to the invention
- FIG. 2 shows a hot rolling mill (continuous roughing mill) with a second embodiment of the device according to the invention
- FIG. 3 shows a signal curve determined by the infrared line sensor.
- FIG. 1 shows excerpts of the mechanical devices associated with a reversing roughing mill and an exemplary embodiment of the arrangement of the infrared line sensors 5 and 6.
- a pusher furnace 1, a roller table 2 and a roller table 7, an upsetting stand 3, a horizontal stand 4, two infrared line sensors 5 and 6 and the finishing train 8 following the reversing roughing mill 8 are shown as mechanical devices Transported towards roller table 7, this is referred to as an odd roll pass. If the rolled strip is transported from the roller table 7 in the direction of the pusher furnace 1, this is referred to as a straight roll pass.
- the infrared line sensor 5 or 6 is used depending on the rolling direction.
- odd rolling dies Chen is the infrared line sensor 5, with straight roll passes, the infrared line sensor 6 is used for strip end detection. The individual whale stitches are repeated until the desired strip thickness is reached.
- the roller conveyor is then transported with the roller table 7 in the direction of the finishing train 8.
- FIG. 2 shows excerpts of the mechanical devices associated with a continuous roughing mill and an exemplary embodiment of the arrangement of the infrared line sensors 12, 12 ⁇ and 12 ⁇ ⁇ .
- a mechanical device a pusher furnace 10, the roller table 11, the infrared line sensors 12, 12 ⁇ and 12 , ⁇ , the compression frame 13, 13 and 13 ⁇ , the horizontal frame 14, 14 ⁇ and 14 ⁇ ⁇ and the finishing train following the continuous roughing train are shown 15.
- the rolled strip is transported from the pusher furnace 10 towards the finishing train 15.
- the infrared line sensors 12, 12 ⁇ and 12 ⁇ positioned in front of the compression stands 13, 13 ⁇ and 13 ⁇ detect the ends of the strip. Depending on the strip end detection, adjustment corrections are applied to the compression frames 13, 13 ⁇ and 13. After the passage of the rolled strip, ie when the strip base of the rolled strip has left the last horizontal stand 14 ⁇ , the rolled strip is transported towards the finishing train 15.
- FIG. 3 shows a signal curve determined by the infrared line sensor.
- a time course is shown on the abscissa, which shows a period of approximately 2 minutes and 50 seconds.
- the ordinate shows the intensity of the heat radiation of the rolled strip measured by the infrared line sensor.
- the determination of the strip head of the rolled strip can be recognized by the increase in the intensity of the radiation.
- the decrease in the intensity of the heat radiation shows the detection of the strip foot of the rolled strip by the
- Infrared line sensor In the diagram shown, four rolled strip passes can be seen, ie the infrared line sensor has detected four tape head and four tape foot signals.
- the fourth roll pass shown in the diagram shows strong fluctuations in the signal determined by the infrared line sensor. These fluctuations in the detected intensity of the heat radiation from the rolled strip arise due to poor environmental conditions, such as water vapor. However, these influences are clearly distinguishable from the heat radiation from the rolled strip, and thus do not influence the clear detection of the strip foot of the rolled strip.
Landscapes
- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Control Of Metal Rolling (AREA)
- Length Measuring Devices By Optical Means (AREA)
- Metal Rolling (AREA)
- Bridges Or Land Bridges (AREA)
- Road Repair (AREA)
Abstract
Description
Beschreibungdescription
Verfahren und Vorrichtung zum Betreiben einer Warmwalzstraße mit mindestens einem StauchgerüstMethod and device for operating a hot rolling mill with at least one compression stand
Die Erfindung betrifft ein Verfahren zum Betreiben einer Warmwalzstraße mit mindestens einem Stauchgerüst und wenigstens einem Sensor zur Bestimmung der Bandendenposition, wobei mit einem Rechensystem eine Optimierung der Bandbreiten- Verteilung von mindestens einem Bandende eines Walzbandes erreicht wird.The invention relates to a method for operating a hot rolling mill with at least one upsetting stand and at least one sensor for determining the strip end position, an optimization of the strip width distribution of at least one strip end of a rolled strip being achieved with a computing system.
Die Erfindung betrifft weiterhin eine Vorrichtung zum Betreiben einer Warmwalzstraße mit mindestens einem Stauchgerüst und wenigstens einem Sensor zur Bestimmung der Bandendenposition, wobei mit einem Rechensystem eine Optimierung der Bandbreitenverteilung von mindestens einem Bandende eines Walzbandes erreicht wird.The invention further relates to a device for operating a hot rolling mill with at least one upsetting stand and at least one sensor for determining the strip end position, an optimization of the strip width distribution of at least one strip end of a rolled strip being achieved with a computing system.
Eine der Hauptprobleme beim Walzen von Bändern, z.B. Bandstahl, ist das Erzielen einer rechteckigen Grundform mit einer über die Länge des Bandes konstanten Breite. In einer Warmwalzstraße dienen vertikale Walzgerüste, welche auch als Stauchgerüste bezeichnet werden, zur Steuerung der Bandbrei- te. Um eine günstige Bandendenausbildung und eine gute Bandbreitenkonstanz über die gesamte Bandlänge erreichen zu können, werden die Stauchgerüste mit schnellen hydraulischen Anstellsystemen ausgerüstet.One of the main problems when rolling strips, e.g. Strip steel, is the achievement of a rectangular basic shape with a constant width over the length of the strip. In a hot rolling mill, vertical rolling stands, which are also referred to as upsetting stands, are used to control the strip width. In order to be able to achieve a favorable belt end formation and a good belt width consistency over the entire belt length, the upsetting stands are equipped with fast hydraulic adjustment systems.
Werden die Stauchgerüste mit konstanter Anstellung gefahren, so wird das Walzband in der Regel an den Bandenden, also dem Bandkopf und dem Bandfuß, aufgrund des unsymmetrischen Materialflusses und anderer Effekte, schmaler als im Mittelteil. Ausgehend von der rechteckigen Walzbandform erhält man nach einem Stauchvorgang, d.h. bei dem Durchlauf des Walzbandes durch das Stauchgerüst, Breiteneinschnürungen an den Bandenden. Der Spannungszustand während des Stauchvorganges führt zu einem sogenannten Anspitzen des Bandkopfes und damit zu Breitenmaßen, die, abhängig vom Stauchmaß, weit unter dem An- stellmaß des Stauchgerüstes liegen.If the compression stands are operated with constant adjustment, the rolled strip is usually narrower at the ends of the strip, i.e. the strip head and the strip base, than in the middle section due to the asymmetrical material flow and other effects. Starting from the rectangular rolled strip shape, width constrictions at the strip ends are obtained after an upsetting process, ie when the rolled strip passes through the upset frame. The state of tension during the upsetting process leads to a so-called sharpening of the band head and thus to width dimensions which, depending on the upsetting dimension, are far below the setting dimension of the upsetting frame.
In ähnlicher Weise bewirkt dieser Umformprozess, abhängig vom Stauchmaß, auch am hinteren Bandende, d.h. am Bandfuß, negative Breitenabweichungen, wobei der in einem Horizontalgerüst nachfolgende Flachstich zu einer Walzbandkontur führt, die als Fischschwanzausbildung bekannt ist.In a similar way, this forming process, depending on the compression size, also causes at the rear end of the belt, i.e. at the base of the strip, negative deviations in width, the subsequent flat stitch in a horizontal stand resulting in a rolled strip contour, which is known as fish tail formation.
Die an den Bandenden auftretenden Unterbreiten bzw. Breiteneinschnürungen sind in erster Linie auf die durch die Stauch- gerüste eingeleiteten asymmetrischen Druck- und Scherspannungen im Bereich der Bandenden zurückzuführen, die wegen der fehlenden Materialabstützung zu einem erhöhten Materiallängs- fluss im Bandkantenbereich führen. Bei fortschreitender Verformung tritt gleichzeitig mit Nachlassen der Längenformände- rung eine Zunahme der Höhenformänderung ein, die zur Wulstbildung entlang der Bandkanten führt. Diese Wulstbildung entlang der Bandkanten wird auch als sogenannte Hundeknochenform bezeichnet.The under-widths or width constrictions occurring at the belt ends are primarily due to the asymmetrical compressive and shear stresses in the area of the belt ends caused by the compression structures, which lead to an increased material longitudinal flow in the belt edge area due to the lack of material support. As the deformation progresses, as the change in length changes, there is an increase in the change in height, which leads to the formation of beads along the band edges. This bulging along the band edges is also referred to as the so-called dog bone shape.
Um der Fischschwanzausbildung und der Ausbildung der sogenannten Hundeknochenform entgegenzuwirken, ist die Anstellposition der Stauchgerüste während des Banddurchlaufes verstellbar, wobei die Anstellung von dem Stauchgerüst beim Durchlaufen der Walzbandenden in Form kurzer Ausschläge, so- genannter „short strokes" , relativ zum Mittelteil, weiter aufgefahren wird. Diese Anstellungskorrektur an den Bandenden des Walzbandes, d.h. am Bandkopf und am Bandfuß, erfolgt entsprechend einer Fahrkurve, die durch vorgegebene Fahrkurvenparameter definiert werden kann.In order to counteract the formation of the fish tail and the formation of the so-called dog bone shape, the setting position of the compression stands during the strip pass is adjustable, the inclination of the compression stand as it moves through the rolled strip ends in the form of short swings, so-called “short strokes”, relative to the middle part This adjustment of the adjustment at the strip ends of the rolled strip, ie at the strip head and at the strip foot, is carried out in accordance with a driving curve which can be defined by predetermined driving curve parameters.
Ein wesentlicher Bestandteil zur Vermeidung von der Fischschwanzausbildung und der Hundeknochenform, ist die zeitrich- tige AufSchaltung der Fahrkurve. Abhängig der Position des Walzbandes wird an den Walzbandenden, d.h. am Bandkopf und am Bandfuß, Anstellungskorrekturen an das Stauchgerüst aufgeschaltet. Um eine Korrektur der Anstellposition von einem Stauchgerüst durchführen zu können, ist die exakte Erkennung der Bandenden notwendig. Bisher wurden in diesem Bereich ■ Sensoren eingesetzt, die auf Grund von widrigen Umgebungsbedingungen, wie z.B. Wasser und Zunder, kein zuverlässiges Messsignal für die Bandendenerkennung erzeugten.An essential part of avoiding the formation of fish tails and the shape of dog bones is the Activation of the driving curve. Depending on the position of the rolled strip, adjustment corrections are applied to the compression stand at the rolled strip ends, ie at the strip head and at the strip foot. In order to be able to correct the setting position of a compression frame, the exact detection of the strip ends is necessary. So far in this field ■ sensors were used that generated due to adverse environmental conditions such as water and scale, no reliable measurement signal for the tape end detection.
Aufgabe der Erfindung ist es, ein Verfahren zum Betreiben einer Warmwalzstraße mit mindestens einem Stauchgerüst und wenigstens einem Sensor zur Bestimmung der Bandendenposition zu finden, mit dem eine zuverlässigere Bestimmung der Bandenden- position des Walzbandes erreicht wird.The object of the invention is to find a method for operating a hot rolling mill with at least one compression stand and at least one sensor for determining the strip end position, with which a more reliable determination of the strip end position of the rolled strip is achieved.
Der Erfindung liegt weiterhin die Aufgabe zugrunde, eine Vorrichtung zum Betreiben einer Warmwalzstraße mit mindestens einem Stauchgerüst und wenigstens einem Sensor zur Bestimmung der Bandendenposition zu finden, das eine zuverlässigere Bestimmung der Bandendenposition von dem Walzband ermöglicht.The invention is also based on the object of finding a device for operating a hot rolling mill with at least one compression frame and at least one sensor for determining the strip end position, which enables the strip end position to be determined more reliably from the rolled strip.
Die Aufgabe wird erfindungsgemäß durch ein Verfahren gemäß Anspruch 1 gelöst. Die Aufgabe wird weiterhin erfindungsgemäß durch eine Vorrichtung nach Anspruch 7 gelöst. Vorteilhafte Weiterbildungen des Verfahrens und der Vorrichtung sind in den weiteren Ansprüchen angegeben.The object is achieved by a method according to claim 1. The object is further achieved according to the invention by a device according to claim 7. Advantageous further developments of the method and the device are specified in the further claims.
Das erfindungsgemäße Verfahren nach Anspruch 1 umfasst eine zur Bestimmung der Bandendenposition zellenförmige Erfassung der Infrarotstrahlung des Walzbandes.The method according to the invention according to claim 1 comprises a cell-shaped detection of the infrared radiation of the rolled strip for determining the strip end position.
Die erfindungsgemäße Vorrichtung nach Anspruch 7 zum Betreiben einer Walzstraße mit mindestens einem Stauchgerüst und wenigstens einem Sensor zur Bestimmung der Bandendenposition, wobei mit einem Rechensystem eine Optimierung der Bandbreitenverteilung von mindestens einem Bandende eines Walzbandes erreicht wird, umfasst einen Sensor der als ein Infrarotzeilensensor ausgebildet ist, der vor und/oder hinter dem Stauchgerüst angeordnet ist.The device according to the invention according to claim 7 for operating a rolling mill with at least one compression frame and at least one sensor for determining the strip end position, an optimization of the strip width distribution of at least one strip end of a rolled strip using a computing system is achieved comprises a sensor which is designed as an infrared line sensor which is arranged in front of and / or behind the compression frame.
Die eingangs dargestellte Problematik der Bestimmung der Bandendenposition von dem Walzband, welche durch schlechte Umgebungsbedingungen, wie z.B. durch auf dem Walzband befindlichen Wasser oder auch Zunder, erschwert wird, wird nunmehr mit einem Infrarotzeilensensor gelöst. Der Infrarotzeilensen- sor erfasst zellenförmig die auf einem vorgebbaren Messbereich abgegebene Infrarotstrahlung des Walzbandes.The problem described at the beginning of determining the strip end position of the rolled strip, which is caused by poor environmental conditions, e.g. is made difficult by water or even scale on the rolling belt, is now solved with an infrared line sensor. The infrared line sensor detects the infrared radiation emitted by the rolled strip in a predetermined measuring range.
Eine vorteilhafte Ausgestaltung bei der Verwendung des Infrarotzeilensensor liegt darin, dass der vorgebbare Messbereich quer zur Bandlaufrichtung verläuft. Vorteil dieser quer zum Bandverlauf gewählten Ausrichtung liegt darin, daß zusätzlich zu der Bandendenerkennung, d.h. Bandkopf (das im Stauchgerüst zuerst einlaufende Bandende) und Bandfuß (das im Stauchgerüst auslaufende Bandende) , auch noch eine Bandkantenerkennung durchgeführt wird. Hier wird die Bandbreitenposition, bezogen auf die in Längsrichtung des Walzbandes verlaufende Walzbandmitte, ermittelt.An advantageous embodiment when using the infrared line sensor lies in the fact that the predeterminable measuring range extends transversely to the tape running direction. The advantage of this alignment, which is selected transversely to the tape run, is that in addition to the tape end detection, i.e. Band head (the first end of the band arriving in the edger) and band foot (the end of the band ending in the edger), a band edge detection is also carried out. Here the strip width position, based on the center of the strip running in the longitudinal direction of the strip, is determined.
Eine weitere vorteilhafte Ausgestaltung der Verwendung des Infrarotzeilensensors liegt darin, dass der vorgebbare Messbereich längs zur Bandlaufrichtung verläuft. Bei dieser Ausrichtung beeinflussen quer zum Walzband liegende Kaltstellen die Bandendenerkennung nicht, da der längs zur Bandlaufrichtung eingestellte Messbereich einen erweiterten Längsbereich des Walzbandes erfasst, und somit auch Plausibilitätsprüfun- gen ermöglichen. Diese Plausibilitätsprüfungen stellen gleichzeitig ein höheres Maß an Sicherheit und Genauigkeit der Messwerterkennung dar.A further advantageous embodiment of the use of the infrared line sensor lies in the fact that the predeterminable measuring range runs longitudinally to the tape running direction. With this alignment, cold spots lying transversely to the rolled strip do not influence the strip end detection, since the measuring range set along the strip running direction covers an extended longitudinal range of the rolled strip, and thus also enables plausibility checks. At the same time, these plausibility checks represent a higher level of security and accuracy of the measured value recognition.
Gemäß einer vorteilhaften Ausgestaltung nach Anspruch 4 erfolgt die Erfassung der Bandendenposition vor dem Stauchgerüst . In einer weiteren vorteilhaften Ausgestaltung des erfindungsgemäßen Verfahrens erfolgt die Erfassung der Bandendenposition nach dem Stauchgerüst..According to an advantageous embodiment according to claim 4, the strip end position is detected in front of the compression frame. In a further advantageous embodiment of the method according to the invention, the strip end position is detected after the compression frame.
Gemäß einer vorteilhaften Ausgestaltung nach Anspruch 6 erfolgt die Erfassung der Bandendenposition vor und nach dem Stauchgerüst.According to an advantageous embodiment according to claim 6, the strip end position is detected before and after the compression frame.
Die Erfindung sowie weitere Vorteile und Details werden im folgenden anhand von schematisch dargestellten Ausführungsbeispielen in der Zeichnung näher erläutert. Es zeigen:The invention and further advantages and details are explained in more detail below with reference to schematically illustrated exemplary embodiments in the drawing. Show it:
FIG 1 eine dargestellte Warmwalzstraße (reversierende Vorstraße) mit einer ersten Ausführungsform der erfindungsgemäßen Vorrichtung, FIG 2 eine dargestellte Warmwalzstraße (durchlaufende Vorstraße) mit einer zweiten Ausführungsform der erfindungsgemäßen Vorrichtung, FIG 3 ein vom Infrarotzeilensensor ermittelter Signalverlauf.1 shows a hot rolling mill (reversing roughing mill) with a first embodiment of the device according to the invention, FIG. 2 shows a hot rolling mill (continuous roughing mill) with a second embodiment of the device according to the invention, FIG. 3 shows a signal curve determined by the infrared line sensor.
Die in FIG 1 dargestellte Warmwalzstraße wird auch als reversierende Vorstraße bezeichnet. In der FIG 1 sind auszugsweise die einer reversierenden Vorstraße zugehörigen mechanischen Einrichtungen sowie eine beispielhafte Ausführung der Anordnung der Infrarotzeilensensoren 5 und 6 gezeigt. Als mechanische Einrichtung sind gezeigt ein Stoßofen 1, ein Rollgang 2 und ein Rollgang 7, ein Stauchgerüst 3, ein Horizontalgerüst 4, zwei Infrarotzeilensensoren 5 und 6 sowie die der reversierenden Vorstraße folgende Fertigstraße 8. Wird ein FIG 1 nicht dargestelltes Walzband vom Stoßofen 1 in Richtung Rollgang 7 transportiert, so wird dies als ungerader Walzstich bezeichnet. Wird das Walzband von dem Rollgang 7 in Richtung Stoßofen 1 transportiert, so wird dies als gerader Walzstich bezeichnet. Abhängig von der Walzrichtung wird entweder der Infrarotzeilensensor 5 oder 6 benutzt. Bei ungeraden Walzsti- chen wird der Infrarotzeilensensor 5, bei geraden Walzstichen wird der Infrarotzeilensensor 6 für die Bandendenerkennung verwendet. Die einzelnen Walsstiche werden so oft wiederholt, bis die gewünschte Walzbanddicke erreicht ist. Anschließend wird das Walzband mit dem Rollgang 7 in Richtung Fertigstraße 8 transportiert.The hot rolling mill shown in FIG. 1 is also referred to as a reversing roughing mill. FIG. 1 shows excerpts of the mechanical devices associated with a reversing roughing mill and an exemplary embodiment of the arrangement of the infrared line sensors 5 and 6. A pusher furnace 1, a roller table 2 and a roller table 7, an upsetting stand 3, a horizontal stand 4, two infrared line sensors 5 and 6 and the finishing train 8 following the reversing roughing mill 8 are shown as mechanical devices Transported towards roller table 7, this is referred to as an odd roll pass. If the rolled strip is transported from the roller table 7 in the direction of the pusher furnace 1, this is referred to as a straight roll pass. Depending on the rolling direction, either the infrared line sensor 5 or 6 is used. With odd rolling dies Chen is the infrared line sensor 5, with straight roll passes, the infrared line sensor 6 is used for strip end detection. The individual whale stitches are repeated until the desired strip thickness is reached. The roller conveyor is then transported with the roller table 7 in the direction of the finishing train 8.
Die in FIG 2 dargestellte Warmwalzstraße wird auch als durchlaufende Vorstraße bezeichnet. In der FIG 2 sind auszugsweise die einer durchlaufenden Vorstraße zugehörigen mechanischen Einrichtungen sowie eine beispielhafte Ausführung der Anordnung der Infrarotzeilensensoren 12, 12 Λ und 12 Λ Λ gezeigt. Als mechanische Einrichtung sind gezeigt ein Stoßofen 10, der Rollgang 11, die Infrarotzeilensensoren 12, 12 λ und 12,Λ, die Stauchgerüst 13, 13 und 13 λλ, die Horizontalgerüst 14, 14 λ und 14 Λ λ sowie die der durchlaufenden Vorstraße folgende Fertigstraße 15. Das Walzband wird vom Stoßofen 10 Richtung Fertigstraße 15 transportiert. Die jeweils vor den Stauchgerüsten 13, 13 Λ und 13 λ positionierten Infrarotzeilensensoren 12, 12 Λ und 12 Λ erfassen die Bandenden. Abhängig der Bandendenerkennung werden Anstellkorrekturen auf die Stauchgerüste 13, 13 Λ und 13 aufgeschaltet . Nach dem Durchlauf des Walzbandes, d.h., wenn der Bandfuß des Walzbandes das letzte Horizontalgerüst 14 Λ verlassen hat, wird das Walzband Rich- tung Fertigstraße 15 transportiert.The hot rolling mill shown in FIG. 2 is also referred to as a continuous roughing mill. FIG. 2 shows excerpts of the mechanical devices associated with a continuous roughing mill and an exemplary embodiment of the arrangement of the infrared line sensors 12, 12 Λ and 12 Λ Λ . As a mechanical device, a pusher furnace 10, the roller table 11, the infrared line sensors 12, 12 λ and 12 , Λ , the compression frame 13, 13 and 13 λλ , the horizontal frame 14, 14 λ and 14 λ λ and the finishing train following the continuous roughing train are shown 15. The rolled strip is transported from the pusher furnace 10 towards the finishing train 15. The infrared line sensors 12, 12 Λ and 12 Λ positioned in front of the compression stands 13, 13 Λ and 13 λ detect the ends of the strip. Depending on the strip end detection, adjustment corrections are applied to the compression frames 13, 13 Λ and 13. After the passage of the rolled strip, ie when the strip base of the rolled strip has left the last horizontal stand 14 Λ , the rolled strip is transported towards the finishing train 15.
In FIG 3 ist ein vom Infrarotzeilensensor ermittelter Signalverlauf gezeigt. Auf der Abszisse ist ein Zeitverlauf dargestellt, der einen Zeitraum von ungefähr 2 Minuten und 50 Sekunden zeigt. Auf der Ordinate ist die vom Infrarotzeilensensor gemessene Intensität der Wärmestrahlung des Walzbandes dargestellt. Die Ermittlung des Bandkopfes des Walzbandes ist durch das Ansteigen der Intensität der Strahlung zu erkennen. Das Abnehmen der Intensität der Wärmestrahlung zeigt die Erkennung des Bandfußes des Walzbandes durch den3 shows a signal curve determined by the infrared line sensor. A time course is shown on the abscissa, which shows a period of approximately 2 minutes and 50 seconds. The ordinate shows the intensity of the heat radiation of the rolled strip measured by the infrared line sensor. The determination of the strip head of the rolled strip can be recognized by the increase in the intensity of the radiation. The decrease in the intensity of the heat radiation shows the detection of the strip foot of the rolled strip by the
Infrarotzeilensensor . In dem dargestellten Diagramm sind vier Walzbanddurchläufe zu sehen, d.h. der Infrarotzeilensensor hat vier Bandkopf- und vier Bandfußsignale erfasst. Der in dem Diagramm vierte dargestellte Walzbanddurchlauf zeigt starke Fluktuationen des von dem Infrarotzeilensensors ermittelten Signales. Diese Fluktuationen der erfassten Intensität der Wärmestrahlung des Walzbandes entstehen aufgrund von schlechten Umgebungsbedingungen, wie z.B. durch Wasserdampf. Diese Einflüsse sind jedoch eindeutig von der Wärmestrahlung des Walzbandes unterscheidbar, und beeinflussen somit die eindeutige Bandfußerkennung des Walzbandes nicht. Infrared line sensor. In the diagram shown, four rolled strip passes can be seen, ie the infrared line sensor has detected four tape head and four tape foot signals. The fourth roll pass shown in the diagram shows strong fluctuations in the signal determined by the infrared line sensor. These fluctuations in the detected intensity of the heat radiation from the rolled strip arise due to poor environmental conditions, such as water vapor. However, these influences are clearly distinguishable from the heat radiation from the rolled strip, and thus do not influence the clear detection of the strip foot of the rolled strip.
Claims
Applications Claiming Priority (3)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| DE10048470A DE10048470A1 (en) | 2000-09-29 | 2000-09-29 | Method and device for operating a hot rolling mill with at least one compression stand |
| DE10048470 | 2000-09-29 | ||
| PCT/DE2001/003582 WO2002026408A1 (en) | 2000-09-29 | 2001-09-17 | Method and device for operating a hot rolling train with at least one edger |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| EP1320425A1 true EP1320425A1 (en) | 2003-06-25 |
| EP1320425B1 EP1320425B1 (en) | 2006-05-24 |
Family
ID=7658208
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| EP01980167A Expired - Lifetime EP1320425B1 (en) | 2000-09-29 | 2001-09-17 | Method and device for operating a hot rolling train with at least one edger |
Country Status (7)
| Country | Link |
|---|---|
| US (1) | US6786071B2 (en) |
| EP (1) | EP1320425B1 (en) |
| JP (1) | JP2004509763A (en) |
| AT (1) | ATE327057T1 (en) |
| DE (2) | DE10048470A1 (en) |
| ES (1) | ES2263666T3 (en) |
| WO (1) | WO2002026408A1 (en) |
Families Citing this family (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| DE10048470A1 (en) | 2000-09-29 | 2002-04-25 | Siemens Ag | Method and device for operating a hot rolling mill with at least one compression stand |
| US20080308978A1 (en) * | 2005-07-20 | 2008-12-18 | Herminio Maorenzic | Heat-Treating of Rolling Elements for Bearings, and Furnace for Implementing Such Treatment |
| GB2468913B (en) | 2009-03-27 | 2011-02-16 | Siemens Vai Metals Tech Ltd | Fully hydraulic edger for plate mills |
| CN103128107B (en) * | 2013-03-14 | 2015-10-07 | 北京科技大学 | A kind of on-line calculation method of rougher of hot strip mill short stroke parameter of curve |
| JP7191532B2 (en) * | 2018-03-22 | 2022-12-19 | 日鉄エンジニアリング株式会社 | Rolling mill and method for manufacturing rolled steel |
| US11642710B2 (en) | 2018-03-28 | 2023-05-09 | Sintokogio, Ltd. | Roll press machine, controlling system of roll press machine, and controlling method of roll press machine |
Family Cites Families (13)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US3651676A (en) * | 1969-12-31 | 1972-03-28 | Westinghouse Electric Corp | Rolling mill control system |
| DE2725353A1 (en) * | 1977-06-04 | 1979-04-19 | Nukem Gmbh | METHOD AND DEVICE FOR MEASURING THE LENGTH OF MOVING SHAPED BODIES, IN PARTICULAR OF RED-HOT SEMI-PRODUCTS |
| JPS5469556A (en) * | 1977-11-14 | 1979-06-04 | Sumitomo Metal Ind Ltd | Controlling method for sheet breadth in hot rolling work |
| EP0057290A1 (en) * | 1981-02-02 | 1982-08-11 | Hoogovens Groep B.V. | Temperature scanner |
| DE3117360A1 (en) * | 1981-05-02 | 1982-11-18 | Eltro GmbH, Gesellschaft für Strahlungstechnik, 6900 Heidelberg | Device for testing rolled material for defect detection |
| DE3125476C2 (en) * | 1981-06-29 | 1986-11-06 | Licentia Patent-Verwaltungs-Gmbh, 6000 Frankfurt | Control device for a pair of scissors for cutting off rolled material ends which are incomplete with regard to their width |
| GB2101918A (en) * | 1981-07-22 | 1983-01-26 | Europ Electronic Syst Ltd | Control for roughing train |
| JPS60255209A (en) * | 1984-05-30 | 1985-12-16 | Mitsubishi Heavy Ind Ltd | Method for controlling edger gap in rolling mill |
| US4656856A (en) * | 1985-10-23 | 1987-04-14 | Bethlehem Steel Corporation | Method and apparatus for eliminating crescent formation in a reduction mill |
| US4899547A (en) * | 1988-12-30 | 1990-02-13 | Even Flow Products, Inc. | Hot strip mill cooling system |
| DE19522494C2 (en) * | 1994-07-07 | 1997-06-19 | Siemens Ag | Process for rolling a metal strip |
| DE19744504B4 (en) * | 1997-10-09 | 2004-05-06 | Sms Demag Ag | Rolling process for strip material in a rolling mill |
| DE10048470A1 (en) | 2000-09-29 | 2002-04-25 | Siemens Ag | Method and device for operating a hot rolling mill with at least one compression stand |
-
2000
- 2000-09-29 DE DE10048470A patent/DE10048470A1/en not_active Ceased
-
2001
- 2001-09-17 AT AT01980167T patent/ATE327057T1/en active
- 2001-09-17 WO PCT/DE2001/003582 patent/WO2002026408A1/en not_active Ceased
- 2001-09-17 JP JP2002530228A patent/JP2004509763A/en not_active Abandoned
- 2001-09-17 ES ES01980167T patent/ES2263666T3/en not_active Expired - Lifetime
- 2001-09-17 EP EP01980167A patent/EP1320425B1/en not_active Expired - Lifetime
- 2001-09-17 DE DE50109898T patent/DE50109898D1/en not_active Expired - Lifetime
-
2003
- 2003-03-28 US US10/401,928 patent/US6786071B2/en not_active Expired - Fee Related
Non-Patent Citations (1)
| Title |
|---|
| See references of WO0226408A1 * |
Also Published As
| Publication number | Publication date |
|---|---|
| EP1320425B1 (en) | 2006-05-24 |
| ATE327057T1 (en) | 2006-06-15 |
| DE10048470A1 (en) | 2002-04-25 |
| US6786071B2 (en) | 2004-09-07 |
| US20030164017A1 (en) | 2003-09-04 |
| WO2002026408A1 (en) | 2002-04-04 |
| JP2004509763A (en) | 2004-04-02 |
| DE50109898D1 (en) | 2006-06-29 |
| ES2263666T3 (en) | 2006-12-16 |
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