EP0972592B2 - Method and horizontal continuous casting machine for the production of a coilable metal strip - Google Patents

Method and horizontal continuous casting machine for the production of a coilable metal strip Download PDF

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Publication number
EP0972592B2
EP0972592B2 EP99112875A EP99112875A EP0972592B2 EP 0972592 B2 EP0972592 B2 EP 0972592B2 EP 99112875 A EP99112875 A EP 99112875A EP 99112875 A EP99112875 A EP 99112875A EP 0972592 B2 EP0972592 B2 EP 0972592B2
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EP
European Patent Office
Prior art keywords
unit
metal strip
withdrawal
rollers
coil
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EP99112875A
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German (de)
French (fr)
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EP0972592B1 (en
EP0972592A1 (en
Inventor
Anwar Von Skroka
Hubertus Dr. Brüning
Hartmut Dipl.-Ing. Oelmann
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KM Europa Metal AG
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KM Europa Metal AG
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Classifications

    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B22—CASTING; POWDER METALLURGY
    • B22D—CASTING OF METALS; CASTING OF OTHER SUBSTANCES BY THE SAME PROCESSES OR DEVICES
    • B22D11/00—Continuous casting of metals, i.e. casting in indefinite lengths
    • B22D11/04—Continuous casting of metals, i.e. casting in indefinite lengths into open-ended moulds
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B22—CASTING; POWDER METALLURGY
    • B22D—CASTING OF METALS; CASTING OF OTHER SUBSTANCES BY THE SAME PROCESSES OR DEVICES
    • B22D11/00—Continuous casting of metals, i.e. casting in indefinite lengths
    • B22D11/12—Accessories for subsequent treating or working cast stock in situ
    • B22D11/128—Accessories for subsequent treating or working cast stock in situ for removing
    • B22D11/1284—Horizontal removing
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B22—CASTING; POWDER METALLURGY
    • B22D—CASTING OF METALS; CASTING OF OTHER SUBSTANCES BY THE SAME PROCESSES OR DEVICES
    • B22D11/00—Continuous casting of metals, i.e. casting in indefinite lengths
    • B22D11/06—Continuous casting of metals, i.e. casting in indefinite lengths into moulds with travelling walls, e.g. with rolls, plates, belts, caterpillars
    • B22D11/0637—Accessories therefor
    • B22D11/0694—Accessories therefor for peeling-off or removing the cast product
    • 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
    • B21B1/46—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 metal immediately subsequent to continuous casting
    • 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, on the one hand, to a process for producing a metal strip which can be wound into a coil in a horizontal strip casting plant and, on the other hand, to a horizontal strip casting plant for carrying out the process.
  • a conventional horizontal strip caster for producing a coil wound metal strip first comprises a furnace (holding furnace or hottop), at the outlet of which a cooled mold is flanged, which determines the cross section of the metal strip, see for example GB-A-2 004 783.
  • a Abziehhhim is arranged with several Abziehrollen.
  • the metal strip is passed between a plurality of horizontally extending Abziehrollen in the horizontal direction through the Abziehhü.
  • Abziehhrollen At least one Abziehrolle is driven. In general, however, several Abziehrollen be driven.
  • a milling unit for machining the surface of the metal strip can be integrated between the mold and the peeling unit.
  • the metal strip is guided in a horizontal plane further up to a unwinding unit.
  • the reel unit is provided with a plurality of bobbins that bend the metal strip so that it is deposited after exiting the Einroileinhek to a coil.
  • the coil is mounted on the roller unit provided above the winding rollers, horizontally extending support rollers.
  • the unrolling unit itself is roller-mounted and displaceable by the metal strip relative to a locally fixed machine bed.
  • a tape separating unit which is roll-supported in the longitudinal direction of the metal belt displaced and the metal strip separates when a Coll has reached its predetermined diameter.
  • the drives for the puller rollers, the belt separating unit and the winding rollers are coupled to each other via a programmable logic controller.
  • the production of the wound into a coil metal strip is carried out in a vocational step-like cycle, consisting of a preliminary stroke of about 15 mm and a return stroke of about 5 mm, wherein between the individual strokes each a break of approximately 2 seconds is inserted.
  • the relative acceleration of the metal strip amounts to approximately 4.5 cm / s 2 . Since during the entire production of the metal strip on the coil, the reeling unit is connected to the coil lying thereon and constantly growing in diameter, the take-off unit must have mass acceleration forces of up to about 25 t (reeling unit with about 4 t to 6 t growing coil of about 4 tons to 16 tons, and in the case of band separation also the band separation unit of about 2 tons). With further consideration of the belt pull-off force of about 2.5 t, a mass force of 250 kN must therefore be accelerated and decelerated in the cycle of the cycles.
  • the reel unit is moved from the stripping unit over the metal strip between two positions.
  • a limit switch causes the retractor to turn on and the retractor unit to move back to the home position along the metal belt.
  • another limit switch is actuated and switches the retracting drive off again.
  • the travel distance of the reel unit is approx. 500 mm.
  • the above-mentioned compositions are accelerated and decelerated intermittently up to thirty times a minute back and forth. Mitiliadem diameter of the coil and consequently also increasing weight, the opposing forces are getting bigger and thereby cause significant stresses on the bearings for the bobbins, but also the other bearings that need to be constantly maintained and frequently replaced for this reason.
  • the predetermined deduction parameters are falsified, so that a reproducibility of the cycles is not possible. A procedure with a higher number of cycles per minute is excluded. DE 2 236 388 discloses.
  • the invention is based on the prior art based on the object to provide a method for producing a wound into a coil metal strip and a horizontal strip caster for performing the method, which avoid high mass acceleration forces and make every single cycle reproducible.
  • the crux of the invention is the measure to synchronously drive at least one winding roller of the unwinding unit and at least one stripping roller of the stripping unit in the cycle of the forward stroke and the return stroke of the metal strip, that is to equip the stripping unit and the unrolling unit with synchronized drives.
  • the tape separation unit is also incorporated herein when it comes into action. In this way, the vocational-step-like cycle, consisting of a forward stroke and a shorter return stroke on the other hand, takes place only in the metal strip, the unavoidable minor shocks are compensated in the end phases of the cycles in the loop of the coil behind the last rolls of reel unit and the coil is formed.
  • the reeling unit therefore wraps synchronously with the peeling unit and, in principle, does not need to be moved.
  • the synchronous driving can be done with any drive unit. It is purely electrical (servo-three-phase drives), but also servohydraulic or purely mechanical drives conceivable.
  • each driven peel roller of the peel-off unit and each driven roller of the reel unit are coupled to each other via a programmable logic controller.
  • a programmable logic controller For several driven Abziehrollen and winding rollers are of course all Abziehrollen and all bobbins for themselves under the influence of a drive, which is then synchronized in each case via the programmable logic controller with the other drive.
  • the horizontal strip caster in a series arrangement on a spaced from a furnace (holding furnace or hot top) associated mold locally fixed peeling unit with several Abziehrollen on.
  • the Abziehrollen are preferably in pairs on top of each other and capture the metal strip between them.
  • the horizontal strip caster comprises a metal strip drawn in the longitudinal direction of the stripper unit from the mold in synchronism with this displaceable strip separating unit. This is used when a coil has reached the intended diameter or weight. Then it is moved at the speed of the metal strip over the period of the separation process.
  • the horizontal strip caster has a rolling unit which can likewise be displaced in the longitudinal direction of the metal strip and has a plurality of winding rolls.
  • the synchronized on their drives with the Abziehrolleln winding rollers are arranged above and below the metal strip that they detect the metal strip, continue and ultimately bend so that it is easily wound to the coil.
  • the reeling unit is therefore no longer displaced by the metal strip.
  • the feed force of the metal strip is deflected into a rotary movement of the coil.
  • This coil lies on support rollers in the reel unit.
  • the feed force is introduced into the rotary motion of the coil and thereby lifts in its linear motion.
  • the return stroke is compensated because of the minimum distance of about 5 mm in the loop that forms between the last pair of reels and the coil.
  • the illustrated in Figure 1 horizontal strip caster 1 comprises first a holding furnace 2, to which a cooled mold 3 is flanged.
  • a metal strip 4 in the embodiment of a copper alloy existing metal strip rectangular flat cross-section.
  • the metal strip 4 is then fed according to the arrow PF via support rollers 5 in a horizontal plane of a locally fixed peeling unit 6 with a plurality of paired pairing peeling rollers 7.
  • the Abziehrollen 7 are driven, wherein the unspecified illustrated drive via a control line. 8 is coupled to a programmable logic controller 9.
  • the removal rollers 7 are rotated after a certain cycle once in one direction and once in the other direction, whereby in the manner of a mit step in each case a forward stroke and a return stroke are generated. Through this cycle, the metal strip 4 in the mold 3 receives the desired quality.
  • each forward stroke is 15 mm and each return stroke 5 mm. There is a break of 2 seconds between strokes.
  • the force of the tape draw is approx. 2.5 t.
  • the relative acceleration of the metal strip 4 by the Abziehrollen 7 amounts to 4.5 cm / s 2 .
  • a strip separating unit 10 In the direction of movement of the metal strip 4, a strip separating unit 10 is provided with a pair of scissors 13 behind the peeling unit 6.
  • the weight of the scissors 13, which can be moved by the metal strip 4 in the case of a separating operation according to the double arrow PF1 on rollers 11 in a locally fixed roller bed 12, is approximately 2 t.
  • the scissor drive not shown is coupled via a control line 14 to the programmable logic controller 9.
  • the metal strip 4 is passed on behind the strip separating unit 10 in the horizontal direction and, after overflowing a further carrying roller 15, is fed to a reeling unit 16, as can be seen in more detail from FIG.
  • the unrolling unit 16 can be moved back and forth in accordance with the double arrow PF2 by means of rollers 17 on a locally fixed machine bed 18 over a distance X of approximately 50 mm.
  • the winding rollers 19 are under the influence of a non-illustrated drive, which is also coupled via a control line 20 to the programmable controller 9 in the Einrolltician 16 are a plurality of mutually associated winding rollers. With the help of this controller 9, the drives of the peeling unit 6 and the reeling unit 16 are synchronized in such a way that the winder rollers 19 have exactly the same speed as the peeling rollers 7.
  • the winding rollers 19 move the metal strip 4 in the reeling unit 16 further and deform it at the same time that it is wound after emerging from the reeling unit 16 to a coil 21, which also in the reeling unit 16 stored support rollers 22 is located.
  • the loop 23 of the metal strip 4 between the exit-side winding rollers 19 and the coil 21 serves to compensate for the return stroke of 5 mm.
  • the compensation distance X of approx. 50 mm is sufficient for this purpose.
  • the positional correction of the reeling unit 16 occurs in a period of about 10 hours, which means a relative movement of 0.001388 mm / s.
  • the arrows PF3 the winding direction of the metal strip 4 to the coil 21 is designated.

Landscapes

  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Winding, Rewinding, Material Storage Devices (AREA)
  • Continuous Casting (AREA)
  • Metal Rolling (AREA)
  • General Induction Heating (AREA)

Abstract

Metal strip (4) in horizontal strip casting installation (1) is extracted from mold (3) by the rolls (7) of extraction unit (6) in a cycle with a forward step and a shorter reverse step. It is fed via a shears unit (10) to coiling section (16) and wound into coil (21). At least one coiling roll (19) of coiling section (16) and at least one extraction roll (7) of unit (6) are driven in synchronism. An Independent claim is also included for an installation for carrying out the above method which incorporates a programmable control system (9) governing the drives of the extraction and coiling rolls (7, 19).

Description

Die Erfindung betrifft einerseits ein Verfahren zur Erzeugung eines zu einem Coil wickelbaren Metallbands in einer Horizontal-Bandgießanlage und andererseits eine Horizontal-Bandgießanlage zur Durchführung des Verfahrens.The invention relates, on the one hand, to a process for producing a metal strip which can be wound into a coil in a horizontal strip casting plant and, on the other hand, to a horizontal strip casting plant for carrying out the process.

Eine herkömmliche Horizontal-Bandgießanlage zur Erzeugung eines zu einem Coil gewickelten Metallbands umfaßt zunächst einen Ofen (Warmhalteofen oder Hottop), an dessen Austritt eine gekühlte Kokille geflanscht ist, welche den Querschnitt des Metallbands bestimmt, siehe beispielsweise GB-A-2 004 783.A conventional horizontal strip caster for producing a coil wound metal strip first comprises a furnace (holding furnace or hottop), at the outlet of which a cooled mold is flanged, which determines the cross section of the metal strip, see for example GB-A-2 004 783.

Im Abstand zur Kokille ist eine Abzieheinheit mit mehreren Abziehrollen angeordnet. Das Metallband wird zwischen mehreren sich horizontal erstreckenden Abziehrollen in horizontaler Richtung durch die Abzieheinheit geführt. Von den Abziehrollen ist mindestens eine Abziehrolle angetrieben. In der Regel sind jedoch mehrere Abziehrollen angetrieben.At a distance to the mold a Abziehheinheit is arranged with several Abziehrollen. The metal strip is passed between a plurality of horizontally extending Abziehrollen in the horizontal direction through the Abziehheinheit. Of Abziehhrollen at least one Abziehrolle is driven. In general, however, several Abziehrollen be driven.

Bei Bedarf kann zwischen die Kokille und die Abzieheinheit noch eine Fräseinheit zur Bearbeitung der Oberfläche des Metallbands integriert sein.If required, a milling unit for machining the surface of the metal strip can be integrated between the mold and the peeling unit.

Von der Abzieheinheit wird das Metallband in horizontaler Ebene weiter bis zu einer Einrolleinheit geführt. Die Einrolleinheit ist mit mehreren Wickelrollen versehen, welche das Metallband biegen, so daß es nach dem Austritt aus der Einroileinhek zu einem Coil abgelegt wird. Das Coil ist auf in der Einrolleinheit oberhalb der Wickelrollen vorgesehenen, sich horizontal erstreckenden Stützrollen gelagert.From the Abziehheinheit the metal strip is guided in a horizontal plane further up to a unwinding unit. The reel unit is provided with a plurality of bobbins that bend the metal strip so that it is deposited after exiting the Einroileinhek to a coil. The coil is mounted on the roller unit provided above the winding rollers, horizontally extending support rollers.

Die Einrolleinheit selber ist rollengelagert und durch das Metallband relativ zu einem örtlich fixierten Maschinenbett verlagerbar.The unrolling unit itself is roller-mounted and displaceable by the metal strip relative to a locally fixed machine bed.

Zwischen der Abzieheinheit und der Einrolleinheit befindet sich, meistens in der Nähe der Abzieheinheit, eine Bandtrenneinheit, die rollengestützt in Längsrichtung des Metallbands verlagerbar ist und das Metallband trennt, wenn ein Coll seinen vorbestimmten Durchmesser erreicht hat.Between the peeling unit and the reeling unit is located, usually in the vicinity of the peeling unit, a tape separating unit which is roll-supported in the longitudinal direction of the metal belt displaced and the metal strip separates when a Coll has reached its predetermined diameter.

Die Antriebe für die Abziehrollen, die Bandtrenneinheit und die Wickelrollen sind über eine speicherprogrammierbare Steuerung miteinander gekoppelt.The drives for the puller rollers, the belt separating unit and the winding rollers are coupled to each other via a programmable logic controller.

Die Erzeugung des zu einem Coil wickelbaren Metallbands erfolgt in einem pilgerschrittartigen Zyklus, bestehend aus einem Vorhub von etwa 15 mm und einem Rückhub von ca. 5 mm, wobei zwischen den einzelnen Hüben jeweils eine Pause von annähemd 2 Sekunden eingelegtwird. Die relative Beschleunigung des Metallbands beläuft sich hierbei auf ungefähr 4,5 cm/s2. Da während der gesamten Erzeugung des Metallbands auf dem Coil die Einrolleinheit mit dem darauf liegenden und im Durchmesser ständig wachsenden Coil verbunden ist, müssen mit der Abzieheinheit Massenbeschleunigungskräfte von bis zu etwa 25 t (Einrolleinheit mit ca. 4 t bis 6 t, das im Durchmesser wachsende Coil mit ca. 4 t bis 16 t und im Falle der Bandtrennung auch die Bandtrenneinheitmit etwa 2 t) beherrschtwerden. Unter weiterer Berücksichtigung der Bandabzugskraftvon ca. 2,5 t muß also eine Massenkraft von 250 kN im Takt der Zyklen beschleunigt und abgebremst werden.The production of the wound into a coil metal strip is carried out in a pilgrim step-like cycle, consisting of a preliminary stroke of about 15 mm and a return stroke of about 5 mm, wherein between the individual strokes each a break of approximately 2 seconds is inserted. The relative acceleration of the metal strip amounts to approximately 4.5 cm / s 2 . Since during the entire production of the metal strip on the coil, the reeling unit is connected to the coil lying thereon and constantly growing in diameter, the take-off unit must have mass acceleration forces of up to about 25 t (reeling unit with about 4 t to 6 t growing coil of about 4 tons to 16 tons, and in the case of band separation also the band separation unit of about 2 tons). With further consideration of the belt pull-off force of about 2.5 t, a mass force of 250 kN must therefore be accelerated and decelerated in the cycle of the cycles.

Die Einrolleinheit wird von der Abzieheinheit aus über das Metallband zwischen zwei Positionen verlagert. Ein Endschalter bewirkt, daß sich der Einrollantrieb einschaltet und sich die Einrolleinheit am Metallband entlang in die Ausgangsposition zurück bewegt. Ist diese Ausgangsposition erreicht, wird ein anderer Endschalter betätigt und schaltet den Einrollantrieb wieder aus. Der Verfahrweg der Einrolleinheit liegt bei ca. 500 mm. Bei dieser Verfahrensweise werden mithin die vorstehend angegebenen Massen intermittierend bis zu dreißig Mal in der Minute hin und her beschleunigt sowie abgebremst. Mitzunehmendem Durchmesser des Coils und folglich auch wachsendem Gewicht werden die gegenläufigen Kräfte immer größer und bewirken dadurch erhebliche Beanspruchungen der Lagerungen für die Wickelrollen, aber auch der anderen Lager, die aus diesem Grunde ständig gewartet und häufig ausgetauscht werden müssen. Darüber hinaus werden die vorgegebenen Abzugsparameterverfälscht, so daß eine Reproduzierbarkeit der Zyklen nicht möglich ist. Eine Verfahrensweise mit einer höheren Zyklenzahl je Minute ist ausgeschlossen. Die DE 2 236 388 offenbart.The reel unit is moved from the stripping unit over the metal strip between two positions. A limit switch causes the retractor to turn on and the retractor unit to move back to the home position along the metal belt. When this home position is reached, another limit switch is actuated and switches the retracting drive off again. The travel distance of the reel unit is approx. 500 mm. In this procedure, therefore, the above-mentioned compositions are accelerated and decelerated intermittently up to thirty times a minute back and forth. Mitzunehmendem diameter of the coil and consequently also increasing weight, the opposing forces are getting bigger and thereby cause significant stresses on the bearings for the bobbins, but also the other bearings that need to be constantly maintained and frequently replaced for this reason. In addition, the predetermined deduction parameters are falsified, so that a reproducibility of the cycles is not possible. A procedure with a higher number of cycles per minute is excluded. DE 2 236 388 discloses.

Der Erfindung liegt ausgehend vom Stand der Technik die Aufgabe zugrunde, ein Verfahren zur Erzeugung eines zu einem Coil gewickelten Metallbands sowie eine Horizontal-Bandgießanlage zur Durchführung des Verfahrens zu schaffen, welche hohe Massenbeschleunigungskräfte vermeiden und jeden einzelnen Zyklus reproduzierbar machen.The invention is based on the prior art based on the object to provide a method for producing a wound into a coil metal strip and a horizontal strip caster for performing the method, which avoid high mass acceleration forces and make every single cycle reproducible.

Was die Lösung des verfahrensmäßigen Teils dieser Aufgabe anlangt, so wird diese in den Merkmalen des Anspruchs 1 gesehen.As regards the solution of the procedural part of this task, it is seen in the features of claim 1.

Kernpunkt der Erfindung bildet die Maßnahme, mindestens eine Wickelrolle der Einrolleinheit und wenigstens eine Abziehrolle der Abzieheinheit im Zyklus des Vorhubs und des Rückhubs des Metallbands synchron anzutreiben, das heißt die Abzieheinheit und die Einrolleinheit mit synchronisierten Antrieben auszustatten. Auch die Bandtrenneinheitwird hierin einbezogen, wenn sie in Aktion tritt. Auf diese Weise findet der pilgerschrittartige Zyklus, bestehend aus einem Vorhub und einem demgegenüber in der Länge kürzeren Rückhub, nur noch im Metallband statt, wobei die nicht zu vermeidenden geringen Stöße in den Endphasen der Zyklen in der Schlaufe des Coils kompensiert werden, die sich hinter den letzten Wickelrollen der Einrolleinheit und dem Coil ausbildet. Die Einrolleinheit wickelt demnach synchron mit der Abzieheinheit und braucht im Prinzip nicht mehr bewegt zu werden. Es wird lediglich ein geringer Verfahrweg von ca. 50 mm vorgesehen, weicherzur Lagekorrekturder Einrolleinheitgedacht ist. Die Bewegung der Einrolleinheit auf dieser Strecke von ca. 50 mm vollzieht sich aber in einem Zeitraum von etwa zehn Stunden, so daß die relative Bewegung unbeeine, Bandeinrollmaschine, die einer horizontalen, aus Warmhalteofen, Kokille Ziehvorrichtung und Trennvorrichtung bestehenden Stranggießanlage nachgeordnet ist, wobei die Bandeinrollmaschine in Strangziehrichtung in bezug auf die Stranggießanlage auf Rollen fahrbar angeordnet ist und mit einer Einrichtung zum Steuern der Bandeinrollgeschwindigkeit in Abhängigkeit von der mittleren Ziehgeschwindigkeit der Stranggießanlage oder vom Verschriebeweg der Bandeinrollmaschine in Wirkverbindung steht. deutend ist.The crux of the invention is the measure to synchronously drive at least one winding roller of the unwinding unit and at least one stripping roller of the stripping unit in the cycle of the forward stroke and the return stroke of the metal strip, that is to equip the stripping unit and the unrolling unit with synchronized drives. The tape separation unit is also incorporated herein when it comes into action. In this way, the pilgrim-step-like cycle, consisting of a forward stroke and a shorter return stroke on the other hand, takes place only in the metal strip, the unavoidable minor shocks are compensated in the end phases of the cycles in the loop of the coil behind the last rolls of reel unit and the coil is formed. The reeling unit therefore wraps synchronously with the peeling unit and, in principle, does not need to be moved. Only a small travel of about 50 mm is provided, which is intended for correcting the position of the reeling unit. However, the movement of the reeling unit on this stretch of about 50 mm takes place in a period of about ten hours, so that the relative movement is unobtrusive, Bandeinrollmaschine which is a horizontal, consisting of holding furnace, mold pulling device and separator downstream continuous casting, wherein the band rolling machine is arranged in the direction of extrusion with respect to the continuous casting on rollers and with a device for controlling the Bandeinrollgeschwindigkeit depending on the average pulling rate of the continuous casting or From the Verschriebeweg the Bandeinrollmaschine is in operative connection. is meaningful.

Im Prinzip ist im Rahmen der Erfindung nur noch die Bandabzugskraft von etwa 2,5 t zu beachten und kurzzeitig für den Zeitpunkt der Trennung des Metallbands auch noch das Gewicht der Bandtrenneinheit von etwa 2 t. Das heißt, maximal ergibt sich ein Gewicht von nur noch 4,5 t, vor und hinter der Trennung eines Metallbands indessen konstant 2,5 t. Das Gewicht des Coils auf der Einrolleinheit wird somit uninteressant. Wichtig ist jedoch im Rahmen der Erfindung, daß nunmehr durch das erfindungsgemäße Verfahren alle Lager wegen derfehlenden Massenstöße beim Beschleunigen und Abbremsen geschont werden, so daß die Standzeit deutlich erhöht wird. Das Coilgewicht wird lediglich durch die Tragfähigkeit der Einrolleinheit und ihres Maschinenbetts begrenzt.In principle, in the context of the invention, only the tape take-off force of about 2.5 t has to be taken into account and, for the time of separation of the metal strip, the weight of the tape separation unit of about 2 t is also present for a short time. This means that a maximum weight of only 4.5 t, before and after the separation of a metal strip, is constant at 2.5 t. The weight of the coil on the reel unit is thus uninteresting. However, it is important in the context of the invention that now all the bearings are spared due to the missing mass impacts when accelerating and decelerating by the inventive method, so that the service life is significantly increased. Coil weight is limited only by the carrying capacity of the reel unit and its machine bed.

Die synchrone Fahrweise kann mit jeder beliebigen Antriebseinheit erfolgen. Es sind rein elektrische (Servo-Drehstromantriebe), aber auch servohydraulische oder rein mechanische Antriebe vorstellbar.The synchronous driving can be done with any drive unit. It is purely electrical (servo-three-phase drives), but also servohydraulic or purely mechanical drives conceivable.

In Fortbildung des erfindungsgemäßen Grundgedankens sind nach Anspruch 2 die Antriebe jeder angetriebenen Abziehrolle der Abzieheinheit undjederangetriebenen Wickelrolle der Einrolleinheit über eine speicherprogrammierbare Steuerung miteinander gekoppelt. Bei mehreren angetriebenen Abziehrollen und Wickel rollen stehen selbstverständlich alle Abziehrollen und alle Wickelrollen für sich unter dem Einfluß eines Antriebs, der dann jeweils über die speicherprogrammierbare Steuerung mit dem anderen Antrieb synchronisiert ist.In a further development of the inventive concept according to claim 2, the drives of each driven peel roller of the peel-off unit and each driven roller of the reel unit are coupled to each other via a programmable logic controller. For several driven Abziehrollen and winding rollers are of course all Abziehrollen and all bobbins for themselves under the influence of a drive, which is then synchronized in each case via the programmable logic controller with the other drive.

Selbstverständlich stehen auch die Längsverlagerung der Bandtrenneinheit sowie der Abschermechanismus unter dem Einfluß der speicherprogrammierbaren Steuerung, um zum jeweils vorgesehenen Zeitpunkt das Metallband zu trennen, damit anschließend das fertig gewickelte Coil von der Einrolleinheit abgenommen und ein neues Coil gewickelt werden kann.Of course, also the longitudinal displacement of the tape separation unit and the Abschermechanismus under the influence of the programmable logic controller to separate at the appropriate time the metal strip so that then the finished wound coil can be removed from the Einrolleinheit and a new coil can be wound.

Schließlich erlaubt es die speicherprogrammierbare Steuerung entsprechend den Merkmalen des Anspruchs 3 in vorteilhafter Weise, daß bei Abweichungen vom synchronen Bewegungsablauf die jeweils betroffene Einheit über einen Korrekturfaktor im Zyklus mit einem Positiv- oder Negativinkremental beaufschlagt und dadurch auf eine Mittenposition gehalten oder in einem definierten Zeitraum schrittweise zurückgeführt wird. Mit dieser Maßnahme wird die Reproduzierbarkeit der einzelnen Zyklen vom Anfang bis zum Ende des Wickeins eines Coils noch deutlicher sichergestellt.Finally, it allows the programmable logic controller according to the features of claim 3 in an advantageous manner that applied to deviations from the synchronous movement, the respective unit affected by a correction factor in the cycle with a positive or Negativinkremental and thereby maintained at a central position or gradually in a defined period is returned. With this measure, the reproducibility of the individual cycles from the beginning to the end of the winding of a coil is even more clearly ensured.

Die gegenständliche Lösung der der Erfindung zugrundeliegenden Aufgabe wird in den Merkmalen des Anspruchs 4 erblickt.The objective solution of the problem underlying the invention is seen in the features of claim 4.

Danach weist eine solche Horizontal-Bandgießanlage in Hintereinanderanordnung eine im Abstand zu einereinem Ofen (Warmhalteofen oderHottop) zugeordneten Kokille örtlich fixierte Abzieheinheit mit mehreren Abziehrollen auf. Die Abziehrollen liegen bevorzugt paarweise übereinander und erfassen zwischen sich das Metallband. Ferner umfaßt die Horizontal-Bandgießanlage eine in Längsrichtung des von der Abzieheinheit aus der Kokille gezogenen Metallbands synchron mit diesem verlagerbare Bandtrenneinheit auf. Diese gelangt zum Einsatz, wenn ein Coil den vorgesehenen Durchmesser bzw. das vorgesehene Gewicht erreicht hat. Dann wird sie mit der Geschwindigkeit des Metallbands über den Zeitraum des Trennvorgangs bewegt. Schließlich weist die Horizontal-Bandgießanlage eine ebenfalls in Längsrichtung des Metallbands verlagerbare Einrolleinheit mit mehreren Wickelrollen auf.Thereafter, such a horizontal strip caster in a series arrangement on a spaced from a furnace (holding furnace or hot top) associated mold locally fixed peeling unit with several Abziehrollen on. The Abziehrollen are preferably in pairs on top of each other and capture the metal strip between them. Further, the horizontal strip caster comprises a metal strip drawn in the longitudinal direction of the stripper unit from the mold in synchronism with this displaceable strip separating unit. This is used when a coil has reached the intended diameter or weight. Then it is moved at the speed of the metal strip over the period of the separation process. Finally, the horizontal strip caster has a rolling unit which can likewise be displaced in the longitudinal direction of the metal strip and has a plurality of winding rolls.

Die über ihre Antriebe mit den Abziehrollen synchronisierten Wickelrollen sind derart ober- und unterhalb des Metallbands angeordnet, daß sie das Metallband erfassen, weiterführen und letztlich so biegen, daß es ohne weiteres zum Coil gewickelt wird. Die Einrolleinheit wird also nicht mehr durch das Metallband verlagert. Durch das Vorschieben des Metallbands ausschließlich durch die Abzieheinheit wird die Vorschubkraft des Metallbands in eine Drehbewegung des Coils umgelenkt. Dieses Coil liegt auf Stützrollen in der Einrolleinheit. Beim Vorhub von ca. 15 mm wird die Vorschubkraft in die Drehbewegung des Coils eingeleitet und hebt sich in ihrer linearen Bewegung dadurch auf. Der Rückhub wird wegen der minimalen Strecke von etwa 5 mm in der Schlaufe kompensiert, die sich zwischen dem letzten Wickelrollenpaar und dem Coil ausbildet.The synchronized on their drives with the Abziehrolleln winding rollers are arranged above and below the metal strip that they detect the metal strip, continue and ultimately bend so that it is easily wound to the coil. The reeling unit is therefore no longer displaced by the metal strip. By advancing the metal strip exclusively by the peel-off unit, the feed force of the metal strip is deflected into a rotary movement of the coil. This coil lies on support rollers in the reel unit. During the preliminary stroke of approx. 15 mm, the feed force is introduced into the rotary motion of the coil and thereby lifts in its linear motion. The return stroke is compensated because of the minimum distance of about 5 mm in the loop that forms between the last pair of reels and the coil.

Die Kopplung des Antriebs der Wickelrollen mit dem Antrieb der Abziehrollen unter Einbeziehung der Bandtrennung führt also dazu, daß negative Massenträgheitskräfte vermieden werden, so daß durchaus 40 und mehr Zyklen pro Minute erreichbar sind, ohne daß Antriebe eingesetzt werden müssen, die größer sind als sie tatsächlich erforderlich wären.The coupling of the drive of the winding rollers with the drive of the Abziehrollen including the band separation thus leads to negative inertial forces are avoided, so that quite 40 and more cycles per minute can be achieved without the need to use drives that are larger than they actually would be required.

Die Erfindung ist nachfolgend anhand eines in den Zeichnungen veranschaulichten Ausführungsbeispiels näher erläutert. Es zeigen:

Figur 1:
im Schema eine Horizontal-Bandgießanlage im vertikalen Längsschnitt und
Figur 2:
in vergrößerter Darstellung, ebenfalls im Schema, eine Einrolleinheit der Horizontal-Bandgießanlage im vertikalen Längsschnitt.
The invention is explained in more detail with reference to an embodiment illustrated in the drawings. Show it:
FIG. 1:
in the diagram, a horizontal strip caster in vertical longitudinal section and
FIG. 2:
in an enlarged view, also in the diagram, a Einrolleinheit the horizontal strip casting in vertical longitudinal section.

Die in der Figur 1 veranschaulichte Horizontal-Bandgießanlage 1 umfaßt zunächst einen Warmhalteofen 2, an den eine gekühlte Kokille 3 geflanscht ist.The illustrated in Figure 1 horizontal strip caster 1 comprises first a holding furnace 2, to which a cooled mold 3 is flanged.

Aus der Kokille 3 tritt ein Metallband 4 aus, beim Ausführungsbeispiel ein aus einer Kupferlegierung bestehendes Metallband rechteckigen flachen Querschnitts. Das Metallband 4 wird dann gemäß dem Pfeil PF über Tragrollen 5 in einer horizontalen Ebene einer örtlich fixierten Abzieheinheit 6 mit mehreren paarweise einander zugeordneten Abziehrollen 7 zugeleitet. Die Abziehrollen 7 sind angetrieben, wobei der nicht näher veranschaulichte Antrieb über eine Steuerleitung 8 mit einer speicherprogrammierbaren Steuerung 9 gekoppelt ist.From the mold 3 exits a metal strip 4, in the embodiment of a copper alloy existing metal strip rectangular flat cross-section. The metal strip 4 is then fed according to the arrow PF via support rollers 5 in a horizontal plane of a locally fixed peeling unit 6 with a plurality of paired pairing peeling rollers 7. The Abziehrollen 7 are driven, wherein the unspecified illustrated drive via a control line. 8 is coupled to a programmable logic controller 9.

Die Abziehrollen 7 werden nach einem bestimmten Zyklus einmal in die eine und einmal in die andere Richtung gedreht, wodurch nach Art eines Pilgerschritts jeweils ein Vorhub und ein Rückhub erzeugt werden. Durch diesen Zyklus erhält das Metallband 4 in der Kokille 3 die gewünschte Qualität.The removal rollers 7 are rotated after a certain cycle once in one direction and once in the other direction, whereby in the manner of a pilgrim step in each case a forward stroke and a return stroke are generated. Through this cycle, the metal strip 4 in the mold 3 receives the desired quality.

Beim Ausführungsbeispiel beträgt jeder Vorhub 15 mm und jeder Rückhub 5 mm. Zwischen den Hüben ist eine Pause von 2 Sekunden vorgesehen. Die Kraft des Bandabzugs beträgt ca. 2,5 t. Die relative Beschleunigung des Metallbands 4 durch die Abziehrollen 7 beläuft sich auf 4,5 cm/s2.In the embodiment, each forward stroke is 15 mm and each return stroke 5 mm. There is a break of 2 seconds between strokes. The force of the tape draw is approx. 2.5 t. The relative acceleration of the metal strip 4 by the Abziehrollen 7 amounts to 4.5 cm / s 2 .

In Bewegungsrichtung des Metallbands 4 ist hinter der Abzieheinheit 6 eine Bandtrenneinheit 10 mit einer Schere 13 vorgesehen. Das Gewicht der durch das Metallband 4 im Falle eines Trennvorgangs gemäß dem Doppelpfeil PF1 auf Rollen 11 in einem örtlich fixierten Rollenbett 12 bewegbaren Schere 13 beträgt ca. 2 t.In the direction of movement of the metal strip 4, a strip separating unit 10 is provided with a pair of scissors 13 behind the peeling unit 6. The weight of the scissors 13, which can be moved by the metal strip 4 in the case of a separating operation according to the double arrow PF1 on rollers 11 in a locally fixed roller bed 12, is approximately 2 t.

Auch der nicht näher dargestellte Scherenantrieb ist über eine Steuerleitung 14 mit der speicherprogrammierbaren Steuerung 9 gekoppelt.The scissor drive not shown is coupled via a control line 14 to the programmable logic controller 9.

Das Metallband 4 wird hinter der Bandtrenneinheit 10 in der Horizontalen weiter geleitet und nach dem Überlaufen einer weiteren Tragrolle 15 einer Einrolleinheit 16 zugeführt, wie sie aus der Figur 2 näher hervorgeht.The metal strip 4 is passed on behind the strip separating unit 10 in the horizontal direction and, after overflowing a further carrying roller 15, is fed to a reeling unit 16, as can be seen in more detail from FIG.

Die Einrolleinheit 16 ist gemäß dem Doppelpfeil PF2 mittels Rollen 17 auf einem örtlich fixierten Maschinenbett 18 über eine Strecke X von ca. 50 mm hin und herverfahrbar. In der Einrolleinheit 16 befinden sich mehrere paarweise einander zugeordnete Wickelrollen 19. Die Wickelrollen 19 stehen unter dem Einfluß eines nicht näher veranschaulichten Antriebs, der über eine Steuerleitung 20 ebenfalls mit der speicherprogrammierbaren Steuerung 9 gekoppelt ist. Mit Hilfe dieser Steuerung 9 sind die Antriebe der Abzieheinheit 6 und der Einrolleinheit 16 derart synchronisiert, daß die Wikkelrollen 19 genau dieselbe Drehzahl aufweisen, wie die Abziehrollen 7.The unrolling unit 16 can be moved back and forth in accordance with the double arrow PF2 by means of rollers 17 on a locally fixed machine bed 18 over a distance X of approximately 50 mm. The winding rollers 19 are under the influence of a non-illustrated drive, which is also coupled via a control line 20 to the programmable controller 9 in the Einrolleinheit 16 are a plurality of mutually associated winding rollers. With the help of this controller 9, the drives of the peeling unit 6 and the reeling unit 16 are synchronized in such a way that the winder rollers 19 have exactly the same speed as the peeling rollers 7.

Beim Vorhub über eine Länge von 15 mm bewegen also auch die Wickelrollen 19 das Metallband 4 in der Einrolleinheit 16 weiter und verformen es gleichzeitig so, daß es nach dem Austritt aus der Einrolleinheit 16 zu einem Coil 21 gewickelt wird, das auf ebenfalls in der Einrolleinheit 16 gelagerten Stützrollen 22 liegt. Die Schlaufe 23 des Metallbands 4 zwischen den austrittsseitigen Wickelrollen 19 und dem Coil 21 dient dazu, den Rückhub von 5 mm zu kompensieren. Dazu reicht die Kompensationsstrecke X von ca. 50 mm aus. Die Lagekorrektur der Einrolleinheit 16 vollzieht sich in einem Zeitraum von ca.10 Stunden, was eine relative Bewegung von 0,001388 mm/s bedeutet.During the pre-stroke over a length of 15 mm so also the winding rollers 19 move the metal strip 4 in the reeling unit 16 further and deform it at the same time that it is wound after emerging from the reeling unit 16 to a coil 21, which also in the reeling unit 16 stored support rollers 22 is located. The loop 23 of the metal strip 4 between the exit-side winding rollers 19 and the coil 21 serves to compensate for the return stroke of 5 mm. The compensation distance X of approx. 50 mm is sufficient for this purpose. The positional correction of the reeling unit 16 occurs in a period of about 10 hours, which means a relative movement of 0.001388 mm / s.

Mit den Pfeilen PF3 ist die Wickelrichtung des Metallbands 4 zum Coil 21 bezeichnet.The arrows PF3, the winding direction of the metal strip 4 to the coil 21 is designated.

BezugszeichenaufstellungREFERENCE NUMBERS

1 -1 -
Horizontal-BandgießanlageHorizontal strip casting plant
2 -2 -
WarmhalteofenHolding furnace
3-3
Kokillemold
4-4
Metallbandmetal band
5 -5 -
Tragrollenidlers
6 -6 -
Abzieheinheitwithdrawal unit
7-7-
Abziehrollenpinch rolls
8 -8th -
Steuerleitungcontrol line
9-9-
Steuerungcontrol
10-10-
BandtrenneinheitBand separation unit
11-11-
Rollen v. 12Roles v. 12
12-12-
Rollenbettroller bed
13 -13 -
Scherescissors
14 -14 -
Steuerleitungcontrol line
15 -15 -
Tragrollesupporting role
16 -16 -
Einrolleinheitcoiling
17-17-
Rollenroll
18-18-
Maschinenbettmachine bed
19 -19 -
Wickelrollenwound rolls
20-20
Steuerleitungcontrol line
21-21-
Coilcoil
22 -22 -
Stützrollensupport rollers
23 -23 -
Schlaufeloop
PF-PF-
Pfeilarrow
PF1 -PF1 -
Doppelpfeildouble arrow
PF2 -PF2 -
Doppelpfeildouble arrow
PF3-PF3
Pfeilarrow
X -X -
Streckeroute

Claims (4)

  1. Method for production of a metal strip (4) which can be wound into a coil (21), in a horizontal continuous casting installation (1) for metal strip, in which the metal strip (4) is withdrawn from a mould (3) associated with a furnace (2) by means of a withdrawal unit (6) exhibiting withdrawal rollers (7) in a cycle of reciprocating type consisting of a forward movement and a backward movement of shorter length, and fed via a strip cutting unit (10) to a coiling unit (16) which is displaceable in the longitudinal direction of the metal strip (4) and in which the metal strip (4) is wound to form the coil (21) supported on rollers, with at least one winding roller (19) of the coiling unit (16) and at least one withdrawal roller (7) of the withdrawal unit (6) being driven synchronously in the cycle of the forward movement and the backward movement of the metal strip (4), wherein the driven winding roller is displaced with the coiling unit 16.
  2. Method according to claim 1, in which the drives of each driven withdrawal roller (7) of the withdrawal unit (6) and of each driven winding roller (19) of the coiling unit (16) are coupled to one another by means of a memory-programmable controller (9).
  3. Method according to claim 1 or 2, in which in the event of departures from the synchronous movement, the affected unit (6, 16) is subjected to a positive or negative incremental by means of a correction factor in the cycle and thereby kept in a middle position or guided back progressively in a defined period of time.
  4. Horizontal continuous casting installation for metal strip for implementing the method according to one of claims 1 to 3, which exhibits the following arranged one after another, namely a withdrawal unit (6) with a plurality of withdrawal rollers (7) fixed in position a distance from a mould (3) associated with a furnace (2), a strip cutting unit (10) displaceable in the longitudinal direction of a metal strip (4) withdrawn from the mould (3) by the withdrawal unit (6), and a coiling unit (16) with winding rollers (19) also displaceable in this longitudinal direction, with at least one withdrawal roller (7) and one winding roller (19) being driveable synchronously and the drives of the withdrawal and winding rollers (7, 19) and of the strip cutting unit (10) being coupled to one another by means of a memory-programmable controller (9) so, with the aid of this controller (9), the drives of the withdrawal unit (6) and of the cooling unit (16) can be synchronised in a cycle of a reciprocating type in such a way that the winding rollers (19) have exactly the same speed as the withdrawal rollers (7).
EP99112875A 1998-07-11 1999-07-03 Method and horizontal continuous casting machine for the production of a coilable metal strip Expired - Lifetime EP0972592B2 (en)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE19831111A DE19831111A1 (en) 1998-07-11 1998-07-11 Process for producing a metal strip that can be wound into a coil and horizontal strip casting installation for carrying out the process
DE19831111 1998-07-11

Publications (3)

Publication Number Publication Date
EP0972592A1 EP0972592A1 (en) 2000-01-19
EP0972592B1 EP0972592B1 (en) 2003-07-02
EP0972592B2 true EP0972592B2 (en) 2006-09-06

Family

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Application Number Title Priority Date Filing Date
EP99112875A Expired - Lifetime EP0972592B2 (en) 1998-07-11 1999-07-03 Method and horizontal continuous casting machine for the production of a coilable metal strip

Country Status (12)

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US (1) US6305068B1 (en)
EP (1) EP0972592B2 (en)
KR (1) KR100611081B1 (en)
CN (1) CN1106896C (en)
AT (1) ATE244084T1 (en)
DE (2) DE19831111A1 (en)
DK (1) DK0972592T4 (en)
ES (1) ES2199504T5 (en)
HU (1) HU222465B1 (en)
PL (1) PL190054B1 (en)
PT (1) PT972592E (en)
TW (1) TW487609B (en)

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* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE102007005435B4 (en) * 2006-02-21 2010-09-23 Sms Meer Gmbh Method and device for producing a metal strip that can be wound into a coil
DE102009045640A1 (en) * 2009-10-13 2011-04-14 Sandvik Materials Technology Deutschland Gmbh rewinder
US9566626B2 (en) * 2013-12-04 2017-02-14 Sms Group Gmbh Apparatus for and method of winding-up a metal strip, and plant for producing a metal strip windable into a coil
TWI669169B (en) * 2014-10-24 2019-08-21 奧地利商百德福鋼帶公司 Strip casting apparatus,method for producing a film or a plate on a strip casting apparatus,computer program product and computer with a computer program stored thereon
CN108787746B (en) * 2017-04-26 2021-03-12 中国宝武钢铁集团有限公司 Production line for producing magnesium alloy products by continuous extrusion and continuous rolling with temperature control

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DE1783032A1 (en) † 1968-09-21 1971-03-04 Siemens Ag Drive for continuous casting plants
DE2110548C3 (en) † 1971-03-05 1975-03-27 Siemens Ag, 1000 Berlin Und 8000 Muenchen Device for controlling the step-by-step drawing of a strand from a horizontal continuous casting mold

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Publication number Priority date Publication date Assignee Title
DE2236388C2 (en) * 1972-07-25 1974-02-07 Technica-Guss Gmbh, 8700 Wuerzburg Tape rolling machine that is downstream of a horizontal continuous caster
AT352923B (en) * 1976-01-23 1979-10-10 Adamec Alfred DEVICE FOR THORNLESS WINDING OF A STRIP-SHAPED CAST RAND
DE2742808B1 (en) * 1977-09-23 1979-03-29 Technica Guss Gmbh Horizontal continuous casting plant consisting of holding furnace, continuous casting mold, drawing device, cutting device and strand rolling machine
JPH02211944A (en) * 1989-02-10 1990-08-23 Ishikawajima Harima Heavy Ind Co Ltd Roll type continuous casting equipment
JPH04305339A (en) * 1991-03-29 1992-10-28 Ngk Insulators Ltd Method for continuously casting copper alloy

Patent Citations (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE1783032A1 (en) † 1968-09-21 1971-03-04 Siemens Ag Drive for continuous casting plants
DE2110548C3 (en) † 1971-03-05 1975-03-27 Siemens Ag, 1000 Berlin Und 8000 Muenchen Device for controlling the step-by-step drawing of a strand from a horizontal continuous casting mold

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DE59906163D1 (en) 2003-08-07
ES2199504T5 (en) 2007-05-01
KR100611081B1 (en) 2006-08-10
DE19831111A1 (en) 2000-01-13
HUP9902347A2 (en) 2000-02-28
HU9902347D0 (en) 1999-09-28
ATE244084T1 (en) 2003-07-15
KR20000011607A (en) 2000-02-25
DK0972592T4 (en) 2007-01-15
PT972592E (en) 2003-11-28
HUP9902347A3 (en) 2000-05-29
EP0972592B1 (en) 2003-07-02
CN1241463A (en) 2000-01-19
PL190054B1 (en) 2005-10-31
CN1106896C (en) 2003-04-30
ES2199504T3 (en) 2004-02-16
DK0972592T3 (en) 2003-10-27
HU222465B1 (en) 2003-07-28
TW487609B (en) 2002-05-21
EP0972592A1 (en) 2000-01-19
US6305068B1 (en) 2001-10-23

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