EP1646464B1 - Method for operating a strip casting machine for producing a metal strip - Google Patents

Method for operating a strip casting machine for producing a metal strip Download PDF

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Publication number
EP1646464B1
EP1646464B1 EP04740295A EP04740295A EP1646464B1 EP 1646464 B1 EP1646464 B1 EP 1646464B1 EP 04740295 A EP04740295 A EP 04740295A EP 04740295 A EP04740295 A EP 04740295A EP 1646464 B1 EP1646464 B1 EP 1646464B1
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EP
European Patent Office
Prior art keywords
casting
sealing plates
placement
time
several
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EP04740295A
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German (de)
French (fr)
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EP1646464A1 (en
Inventor
Heinrich Marti
JACQUES BARBé
Hans Streubel
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Main Management Inspiration AG
SMS Siemag AG
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Main Management Inspiration AG
SMS Demag AG
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Publication of EP1646464A1 publication Critical patent/EP1646464A1/en
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    • 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
    • B22D11/16—Controlling or regulating processes or operations
    • 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
    • B22D11/0648—Casting surfaces
    • B22D11/066—Side dams

Definitions

  • the invention relates to a method for operating a strip casting machine for the production of a metal strip according to the preamble of claim 1.
  • the sealing of the end faces of the casting rolls by means of lateral sealing plates is to be improved by the use of lubricant in two-roll casting, which is applied to the outer circumference of the casting roll end faces and distributed there by means of brushes.
  • the document US 6,296,046 B1 describes a method for reducing the setting forces on the sealing plates of a two-roll casting installation.
  • the position of the solidified cast strip is determined by the driving forces of the casting rolls are determined.
  • the position of the sealing plates or the set height of the sealing plates is adapted to the position of the solidified point (solidification point).
  • the present invention has for its object to provide a method of the type mentioned, which allows a significant reduction in wear.
  • the sealing plates in repeatable "Goand Stop" steps with a predetermined force and time against the end faces of the casting rollers to make sealing plates and hold in the holding position for a predetermined time, the wear of the sealing plates and the casting roles end pages is clear reduced.
  • the contact pressure of the sealing plates against the end faces of the casting rolls or the holding time of the sealing plates in the holding position varies and, accordingly, the process can be adapted to the specific casting conditions.
  • the holding time is maintained at least twice as long and a maximum of 300 times as long as the setting time.
  • the lower service life due to the lower wear leads to significantly lower costs of the sealing plates per tonne of steel, to longer casting sequences and to a higher output, as a result of which the economic efficiency of the process is substantially improved.
  • a side seal 10 is shown for a roller-belt casting machine, which is provided for the lateral sealing of a casting gap formed between two casting rolls.
  • Two arranged on both faces of the casting rolls side seals 10 (also called narrow side parts) limit the casting gap in its length.
  • the casting rolls are indicated in phantom in Fig. 2 and designated 1, 2.
  • the side seal 10 comprises a sealing plate 11 which is accommodated in a holding frame 12 operatively connected to a setting device 13.
  • the holding frame 12 together with the sealing plate 11 in the longitudinal direction of the casting rolls 1, 2 adjustable and thereby the sealing plate 11 with its sealing side 11a on faces of the casting rolls 1, 2 can be adjusted or pressed.
  • the adjusting device 13 is known per se; a similar adjusting device is described in detail, for example, in the already mentioned WO-A-01/23122. In the following, therefore, only the essential elements of the adjusting device 13 are mentioned, reference being made to the above-mentioned document for the possible precise structure.
  • the side seals 10 are laterally fed by a manipulator, not shown in detail in the drawing to the casting rolls or away from them.
  • the adjusting device 13 comprises an apparent from Fig. 1 connecting plate 50 which is connected in a manner not shown with a support member of the manipulator or is floatingly mounted on the latter.
  • the retaining frame 12 accommodating the sealing plate 11 is mounted on the connecting plate 50 by means of articulated connections which are formed by an approximately horizontal articulated lever 51 and a vertical articulated lever 52.
  • the articulated levers 51, 52 are each with one end on the support frame 12 and with the other end Spherical mounted on the connecting plate 50.
  • the support frame 12 is pressed via an elastic connection, for example an adjustable tension spring 53 with anchor between it and the connecting plate 50, permanently on pistons of three Anstellzylindern 55, which in the manner of a three-point support on the support frame 12 a controllable contact pressure on the respective sealing plate eleventh exercise.
  • the adjusting cylinder 55 are - after the side seals 10 have been supplied to the position laterally of the casting rolls 1, 2 and centered - activated.
  • the sealing plate 11 is housed in a container-shaped part (containment) 16 of the holding frame 12, which rests on a steel support 17 of the holding frame 12 and connected thereto, for example, is welded.
  • the steel support 17 is in turn connected, preferably welded, on the one hand to a rear frame part 18 and on the other side to the container-shaped part 16 and positioned in its position.
  • Both the rear frame part 18 and the side part 20 of the holding frame 12 are provided with cooling channels 22, 23 for a cooling medium, preferably cooling water.
  • the cooling water inlet is indicated in Fig. 1 and 2 with arrow E
  • the cooling water outlet is indicated in Fig. 2 with arrows A.
  • the sealing plate 11 is preferably made of an inexpensive material, which may be a graphite-containing carbon or a mixture of SiO 2 , Al 2 O 3 , zirconium oxide and graphite - similar to today's casting tubes.
  • On the sealing side 11a it is coated with a material which has good sliding and abrasion properties, for example with boron nitride, SiALON or the abradables known as sealing material in gas turbines. The coating is done by applying. The thickness of the layer is 0.1 to 2 mm.
  • the sealing side 11 a can be coated over its entire surface with the same material. But it may also be, for example, in the wetted area to a different coating, for example with low wettability, with good insulation properties and wear values etc.
  • the sealing plate 11 is supported in the container-shaped part 16 with its side facing away from the sealing side 11a on three hard pads 28 and preferably positioned by means arranged on its circumference holding elements 29 (this type of attachment allows easy insertion and ejection of the sealing plate 11 in the support frame 12, ie a quick replacement the sealing plate 11). Between the sealing plate 11 and the container-shaped part 16, an insulation 30 is present. As can be seen from FIG. 2, the hard supports 28 are assigned to the corner regions of the substantially triangular sealing plate 11. Equally distributed are the adjusting cylinder 55th
  • the adjusting device 13 described above which allows a three-dimensional movement of the side seal 10 when hiring or pressing the respective sealing plate 11, allows a very accurate support on the faces of the casting rolls 1, 2, even in the heated operating condition, whereby the wear is kept as small as possible.
  • the sealing plates 11 are first pressed for a comparatively short time on the faces of the casting rolls 1, 2 and then relieved of the contact pressure and held in position before the "stop and go" -Anerin the sealing plates is made.
  • the time for holding the position, the holding time be much longer than the time for hiring with a predetermined force, in each case after 5 revolutions, and this can also take place after 500 revolutions.
  • the length of the setting time depends on the diameter of the casting rolls 1, 2, the casting roll material, the size of the contact pressure or contact force, the casting speed, the steel quality, the material of the sealing plates 11 and / or other factors. In the order of magnitude it is an adjustment time of 1 to 30 seconds.
  • the contact pressure is usually between 0.05 and 1.00 N / mm 2 .
  • the lateral seals 10 can be displaced or pivoted in the vertical and / or horizontal direction before the respective renewed setting in order to avoid or reduce uneven wear.
  • the setting of the sealing plates 11 at a predetermined time with a predetermined force is controlled by means of a monitoring and control system.

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  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Continuous Casting (AREA)
  • Steering Controls (AREA)

Abstract

The invention relates to a method of operating a strip casting machine for producing a metal strip, during which molten metal is continuously poured between two casting rolls ( 1, 2 ) that form a casting gap. Lateral seals ( 10 ) having sealing plates ( 11 ) are provided for laterally delimiting the casting gap, whereby the sealing plates ( 11 ) are placed or pressed with a preset placement or pressing force, whose magnitude can be set, against the end surfaces of the casting rolls ( 1, 2 ). The sealing plates ( 11 ) are, in repeatable stop-and-go steps, placed with a preset force and time against the end surfaces of the casting rolls ( 1, 2 ) and are held in the placing position for a preset time. This enables a distinct reduction in the wear of the sealing plates and of the casting roll end surfaces.

Description

Die Erfindung betrifft ein Verfahren zum Betrieb einer Bandgießmaschine für die Erzeugung eines Metallbandes gemäß dem Oberbegriff des Anspruches 1.The invention relates to a method for operating a strip casting machine for the production of a metal strip according to the preamble of claim 1.

Es ist beispielsweise aus der WO-A-01/23122 bekannt, mit Dichtplatten versehene Seitenabdichtungen zur Begrenzung eines zwischen zwei Gießrollen gebildeten Gießspaltes während der gesamten Gießdauer gegen die Stirnseiten der Gießrollen mit einer vorgegebenen Kraft anzustellen bzw. anzupressen, um die erforderliche Dichtheit zu gewährleisten. Ein Überwachungs- und Regelungssystem sorgt für die genaue Auflage der Dichtplatten an den Stirnseiten der Gießrollen und für die kontinuierliche Regelung des Anpressdruckes. Bekannt sind auch Bandgießmaschinen, bei denen die Seitenabdichtungen zusätzlich in horizontaler oder vertikaler Richtung verschoben oder oszillierend bewegt werden, um den ungleichmäßigen Verschleiß der Dichtplatten zu vermindern. Dennoch kann auch bei dieser Art der Dichtplatten-Anstellung der hohe Verschleiß sowohl der Dichtplatten als auch der Rollenstimseiten nicht verhindert werden, wodurch die Gießzeit begrenzt ist und die Wirtschaftlichkeit des Verfahrens wegen der hohen Kosten für die Dichtplatten und wegen der großen Ausbringungsverluste in Frage gestellt wird.It is known, for example, from WO-A-01/23122, with side seals for limiting a casting gap formed between two casting rolls during the entire casting time against the end faces of the casting rolls with a predetermined force or press to ensure the required tightness , A monitoring and control system ensures the exact support of the sealing plates on the faces of the casting rolls and for the continuous regulation of the contact pressure. Also known are strip casting machines, in which the side seals are additionally displaced in the horizontal or vertical direction or oscillated in order to reduce the uneven wear of the sealing plates. Nevertheless, the high wear of both the sealing plates and the Rollenstimseiten can not be prevented even with this type of sealing plate employment, whereby the casting time is limited and the economy of the process due to the high cost of the sealing plates and because of the large output losses is questioned ,

Aus dem Dokument EP 0 546 206 A ist ein Verfahren zum Zweirollen-Bandgießen bekannt, bei dem die Aufgabe genannt ist, den Verschleiß der seitlichen Dichtplatten zu reduzieren. Hierzu werden die Dichtplatten abwechselnd angestellt und danach in ihrer Position gehalten. Dabei erfolgt die Regelung jedoch nicht mit vorgegebener Zeit und Kraft, sondern verschleißabhängig bzw. reaktionskraftabhängig.From the document EP 0 546 206 A a method for two-roll strip casting is known in which the task is called to reduce the wear of the lateral sealing plates. For this purpose, the sealing plates are turned on alternately and then held in position. However, the control does not take place with a given time and force, but depending on the wear and reaction force.

Gemäß dem Dokument EP 0 677 345 soll beim Zweirollengießen die Abdichtung der Stirnseiten der Gießrollen mittels seitlicher Dichtplatten durch den Einsatz von Schmiermittel verbessert werden, welches auf den äußerem Umfang der Gießrollen-Stirnseiten aufgetragen und dort mittels Bürsten verteilt wird.According to the document EP 0 677 345, the sealing of the end faces of the casting rolls by means of lateral sealing plates is to be improved by the use of lubricant in two-roll casting, which is applied to the outer circumference of the casting roll end faces and distributed there by means of brushes.

Im Dokument US 6,296,046 B1 wird ein Verfahren zur Reduzierung der Anstellkräfte an die Dichtplatten einer Zweirollen-Gießanlage beschrieben. Hierzu wird die Position des durcherstarrten gegossenen Bandes ermittelt, indem die ANtriebskräfte der Gießrollen bestimmt werden. Die Positon der Dichtplatten bzw. die eingestellte Höhe der Dichtplatten wird der Position des durcherstarrten Bandes (solidification point) angepasst.The document US 6,296,046 B1 describes a method for reducing the setting forces on the sealing plates of a two-roll casting installation. For this purpose, the position of the solidified cast strip is determined by the driving forces of the casting rolls are determined. The position of the sealing plates or the set height of the sealing plates is adapted to the position of the solidified point (solidification point).

Der vorliegenden Erfindung liegt die Aufgabe zugrunde, ein Verfahren der eingangs genannten Art vorzuschlagen, das eine deutliche Verschleißverminderung ermöglicht.The present invention has for its object to provide a method of the type mentioned, which allows a significant reduction in wear.

Diese Aufgabe wird erfindungsgemäß durch ein Verfahren mit den Merkmalen des Anspruches 1 gelöst.This object is achieved by a method with the features of claim 1.

Weitere bevorzugte Ausgestaltungen des erfindungsgemäßen Verfahrens bilden den Gegenstand der abhängigen Ansprüche.Further preferred embodiments of the method according to the invention form the subject of the dependent claims.

Mit dem erfindungsgemäßen Verfahren, die Dichtplatten in wiederholbaren "Goand Stop-" Schritten mit einer vorgegebenen Kraft und Zeit gegen die Stirnflächen der Gießrollen Dichtplatten anzustellen und in der Halteposition für eine vorgegebene Zeit zu halten, wird der Verschleiß der Dichtplatten sowie der Gießrollen-Stimseiten deutlich verringert.With the inventive method, the sealing plates in repeatable "Goand Stop" steps with a predetermined force and time against the end faces of the casting rollers to make sealing plates and hold in the holding position for a predetermined time, the wear of the sealing plates and the casting roles end pages is clear reduced.

Vorteilhaft kann die Anstellkraft der Dichtplatten gegen die Stirnflächen der Gießrollen bzw. die Haltezeit der Dichtplatten in der Halteposition variiert und demnach das Verfahren den spezifischen Gießverhältnissen angepasst werden.Advantageously, the contact pressure of the sealing plates against the end faces of the casting rolls or the holding time of the sealing plates in the holding position varies and, accordingly, the process can be adapted to the specific casting conditions.

Mit Vorteil wird die Haltezeit mindestens doppelt so lang und maximal 300 mal so lang wie die Anstellzeit gehalten. Die durch den geringeren Verschleiß bedingten, längeren Standzeiten führen zu deutlich geringeren Kosten der Dichtplatten pro Tonne Stahl, zu längeren Gießsequenzen und zu einer höheren Ausbringung, wodurch die Wirtschaftlichkeit des Verfahrens wesentlich verbessert wird.Advantageously, the holding time is maintained at least twice as long and a maximum of 300 times as long as the setting time. The lower service life due to the lower wear leads to significantly lower costs of the sealing plates per tonne of steel, to longer casting sequences and to a higher output, as a result of which the economic efficiency of the process is substantially improved.

Die Erfindung wird nachfolgend anhand der Zeichnung näher erläutert.
Es zeigen:

Fig. 1
im vertikalen Längsschnitt ein Ausführungsbeispiel einer Seitenabdichtung mit einer Dichtplatte für eine Bandgießmaschine;
Fig. 2
einen Schnitt nach Linie II-II in Fig. 1.
The invention will be explained in more detail with reference to the drawing.
Show it:
Fig. 1
in vertical longitudinal section an embodiment of a side seal with a sealing plate for a strip casting machine;
Fig. 2
a section along line II-II in Fig. 1st

In Fig.1 und Fig.2 ist eine Seitenabdichtung 10 für eine Rollen-Bandgiessmaschine gezeigt, die zur seitlichen Abdichtung eines zwischen zwei Giessrollen gebildeten Giessspaltes vorgesehen ist. Zwei zu beiden Stirnseiten der Giessrollen angeordnete Seitenabdichtungen 10 (auch Schmalseitenteile genannt) begrenzen den Giessspalt in seiner Länge. Die Giessrollen sind in Fig. 2 strichpunktiert angedeutet und mit 1, 2 bezeichnet.In Fig.1 and Fig.2 a side seal 10 is shown for a roller-belt casting machine, which is provided for the lateral sealing of a casting gap formed between two casting rolls. Two arranged on both faces of the casting rolls side seals 10 (also called narrow side parts) limit the casting gap in its length. The casting rolls are indicated in phantom in Fig. 2 and designated 1, 2.

Die Seitenabdichtung 10 umfasst gemäss Fig. 1 eine Dichtplatte 11, die in einem mit einer Anstellvorrichtung 13 wirkverbundenen Halterahmen 12 untergebracht ist. Mittels der Anstellvorrichtung 13 ist der Halterahmen 12 mitsamt der Dichtplatte 11 in Längsrichtung der Giessrollen 1, 2 verstellbar und dadurch die Dichtplatte 11 mit ihrer Abdichtseite 11a an Stirnseiten der Giessrollen 1, 2 anstellbar bzw. anpressbar.According to FIG. 1, the side seal 10 comprises a sealing plate 11 which is accommodated in a holding frame 12 operatively connected to a setting device 13. By means of the adjusting device 13, the holding frame 12 together with the sealing plate 11 in the longitudinal direction of the casting rolls 1, 2 adjustable and thereby the sealing plate 11 with its sealing side 11a on faces of the casting rolls 1, 2 can be adjusted or pressed.

Die Anstellvorrichtung 13 ist an sich bekannt; eine ähnliche Anstellvorrichtung ist beispielsweise in der bereits erwähnten WO-A-01/23122 ausführlich beschrieben. Im folgenden werden daher nur die wesentlichen Elemente der Anstellvorrichtung 13 erwähnt, wobei für den möglichen genauen Aufbau auf die vorstehend erwähnte Druckschrift verwiesen wird.The adjusting device 13 is known per se; a similar adjusting device is described in detail, for example, in the already mentioned WO-A-01/23122. In the following, therefore, only the essential elements of the adjusting device 13 are mentioned, reference being made to the above-mentioned document for the possible precise structure.

Die Seitenabdichtungen 10 werden mittels eines in der Zeichnung nicht näher dargestellten Manipulators seitlich zu den Giessrollen zu- bzw. von diesen weggeführt. Die Anstellvorrichtung 13 umfasst eine aus Fig. 1 ersichtliche Verbindungsplatte 50, die in nicht dargestellter Weise mit einem Trägerelement des Manipulators verbunden bzw. am letzteren schwimmend gelagert ist. Der die Dichtplatte 11 aufnehmende Halterahmen 12 ist über Gelenkverbindungen an der Verbindungsplatte 50 gelagert, die durch einen annähernd horizontalen Gelenkhebel 51 und einen vertikalen Gelenkhebel 52 gebildet sind. Die Gelenkhebel 51, 52 sind jeweils mit einem Ende am Halterahmen 12 und mit dem anderen Ende an der Verbindungsplatte 50 sphärisch gelagert. Der Halterahmen 12 ist über eine elastische Verbindung, beispielsweise eine einstellbare Zugfeder 53 mit Anker zwischen ihm und der Verbindungsplatte 50, permanent an Kolben von drei Anstellzylindern 55 angedrückt, welche in der Art einer Dreipunktauflage über den Halterahmen 12 einen steuerbaren Anpressdruck auf die jeweilige Dichtplatte 11 ausüben. Die Anstellzylinder 55 werden - nachdem die Seitenabdichtungen 10 in die Stellung seitlich der Giessrollen 1, 2 zugeführt und zentriert worden sind - aktiviert.The side seals 10 are laterally fed by a manipulator, not shown in detail in the drawing to the casting rolls or away from them. The adjusting device 13 comprises an apparent from Fig. 1 connecting plate 50 which is connected in a manner not shown with a support member of the manipulator or is floatingly mounted on the latter. The retaining frame 12 accommodating the sealing plate 11 is mounted on the connecting plate 50 by means of articulated connections which are formed by an approximately horizontal articulated lever 51 and a vertical articulated lever 52. The articulated levers 51, 52 are each with one end on the support frame 12 and with the other end Spherical mounted on the connecting plate 50. The support frame 12 is pressed via an elastic connection, for example an adjustable tension spring 53 with anchor between it and the connecting plate 50, permanently on pistons of three Anstellzylindern 55, which in the manner of a three-point support on the support frame 12 a controllable contact pressure on the respective sealing plate eleventh exercise. The adjusting cylinder 55 are - after the side seals 10 have been supplied to the position laterally of the casting rolls 1, 2 and centered - activated.

Die Dichtplatte 11 ist in einem behälterförmigen Teil (containment) 16 des Halterahmens 12 untergebracht, der auf einer Stahlauflage 17 des Halterahmens 12 aufliegt und mit dieser verbunden, beispielsweise verschweisst ist. Die Stahlauflage 17 ist wiederum einerseits mit einem hinteren Rahmenteil 18 und anderseits mit den behälterförmigen Teil 16 umschliessenden und in seiner Lage positionierenden Seitenteil 20 verbunden, vorzugsweise verschweisst. Sowohl der hintere Rahmenteil 18 als auch das Seitenteil 20 des Halterahmens 12 sind mit Kühlkanälen 22, 23 für ein Kühlmedium, vorzugsweise Kühlwasser, versehen. Der Kühlwasser-Zulauf ist in Fig. 1 und 2 mit Pfeil E angedeutet, der Kühlwasser-Ablauf ist in Fig. 2 mit Pfeilen A bezeichnet.The sealing plate 11 is housed in a container-shaped part (containment) 16 of the holding frame 12, which rests on a steel support 17 of the holding frame 12 and connected thereto, for example, is welded. The steel support 17 is in turn connected, preferably welded, on the one hand to a rear frame part 18 and on the other side to the container-shaped part 16 and positioned in its position. Both the rear frame part 18 and the side part 20 of the holding frame 12 are provided with cooling channels 22, 23 for a cooling medium, preferably cooling water. The cooling water inlet is indicated in Fig. 1 and 2 with arrow E, the cooling water outlet is indicated in Fig. 2 with arrows A.

Die Dichtplatte 11 besteht vorzugsweise aus einem preiswerten Material, wobei es sich um einen graphithaltigen Kohlenstoff oder um eine Mischung aus SiO2, Al2O3, Zirkonoxyd und Graphit - ähnlich wie bei heutigen Giessrohren - handeln kann. Auf der Abdichtseite 11a ist sie mit einem Material beschichtet, welches gute Gleit- und Abriebeigenschaften aufweist, wie z.B. mit Bornitrid, SiALON oder dem als Dichtungsmaterial bei Gasturbinen bekannten Abradables. Die Beschichtung erfolgt durch ein Auftragen. Die Dicke der Schicht beträgt 0,1 bis 2 mm. Die Abdichtseite 11 a kann über ihre ganze Fläche mit dem gleichen Material beschichtet sein. Es kann sich aber auch beispielsweise im benetzten Bereich um eine unterschiedliche Beschichtung handeln, zum Beispiel mit niedriger Benetzbarkeit, mit guten Isolationseigenschaften und Abnutzungswerten etc.The sealing plate 11 is preferably made of an inexpensive material, which may be a graphite-containing carbon or a mixture of SiO 2 , Al 2 O 3 , zirconium oxide and graphite - similar to today's casting tubes. On the sealing side 11a, it is coated with a material which has good sliding and abrasion properties, for example with boron nitride, SiALON or the abradables known as sealing material in gas turbines. The coating is done by applying. The thickness of the layer is 0.1 to 2 mm. The sealing side 11 a can be coated over its entire surface with the same material. But it may also be, for example, in the wetted area to a different coating, for example with low wettability, with good insulation properties and wear values etc.

Die Dichtplatte 11 ist im behälterförmigen Teil 16 mit ihrer der Abdichtseite 11a abgewandten Fläche auf drei Hartauflagen 28 abgestützt und vorzugsweise mittels an ihrem Umfang angeordneter Halteelemente 29 positioniert (diese Befestigungsart ermöglicht leichtes Einlegen und Herausdrücken der Dichtplatte 11 in den Halterahmen 12, d.h. ein rasches Auswechseln der Dichtplatte 11). Zwischen der Dichtplatte 11 und dem behälterförmigen Teil 16 ist eine Isolation 30 vorhanden. Wie aus Fig. 2 ersichtlich, sind die Hartauflagen 28 den Eckbereichen der im wesentlichen dreieckförmigen Dichtplatte 11 zugeordnet. Gleich verteilt sind auch die Anstellzylinder 55.The sealing plate 11 is supported in the container-shaped part 16 with its side facing away from the sealing side 11a on three hard pads 28 and preferably positioned by means arranged on its circumference holding elements 29 (this type of attachment allows easy insertion and ejection of the sealing plate 11 in the support frame 12, ie a quick replacement the sealing plate 11). Between the sealing plate 11 and the container-shaped part 16, an insulation 30 is present. As can be seen from FIG. 2, the hard supports 28 are assigned to the corner regions of the substantially triangular sealing plate 11. Equally distributed are the adjusting cylinder 55th

Die vorstehend beschriebene Anstellvorrichtung 13, die eine dreidimensionale Bewegung der Seitenabdichtung 10 beim Anstellen bzw. Anpressen der jeweiligen Dichtplatte 11 erlaubt, ermöglicht eine sehr genaue Auflage an den Stirnseiten der Giessrollen 1, 2 auch im erwärmten Betriebszustand, wodurch der Verschleiss möglichst klein gehalten wird.The adjusting device 13 described above, which allows a three-dimensional movement of the side seal 10 when hiring or pressing the respective sealing plate 11, allows a very accurate support on the faces of the casting rolls 1, 2, even in the heated operating condition, whereby the wear is kept as small as possible.

Damit dieser Verschleiss noch weiter reduziert werden kann, wird erfindungsgemäss vorgeschlagen, nach dem beim Angiessen durchgeführten Einschleifen der Dichtplatten 11, welches durch Anpressen der Dichtplatten 11 mit einer vorgegebenen Kraft an die Stirnseiten der Giessrollen 1, 2 erfolgt, den Anpressdruck während des nachfolgenden Giessbetriebs nicht konstant aufrechtzuerhalten, d.h. die Dichtplatten 11 nicht kontinuierlich anzustellen, sondern die Anstellung in einem sogenannten "Stop and Go"- Verfahren durchzuführen, bei dem in wiederholbaren "Stop- and Go-"Schritten während einer bestimmten Dauer, einer Haltezeit, die Position der Dichtplatten unverändert gehalten wird, bevor wieder das Anstellen mit einer vorgegebenen Kraft während einer vorgegebenen Zeit erfolgt. Sowohl diese Anstellkraft als auch die Haltezeit kann hierbei variierbar gehalten werden. Dies wird insbesondere dem Abdichtungsverhalten der Dichtplatten 11 angepasst.So that this wear can be further reduced, it is proposed according to the invention, after the grinding of the sealing plates 11, which takes place by pressing the sealing plates 11 with a predetermined force to the end faces of the casting rolls 1, 2, the contact pressure during the subsequent casting operation not to maintain constant, ie not to make the sealing plates 11 continuously, but to perform the employment in a so-called "stop and go" - method in which in repeatable "stop and go" steps for a certain period of time, a holding time, the position of the sealing plates is held unchanged before the hiring takes place again with a predetermined force for a predetermined time. Both this contact force and the holding time can be kept variable. This is particularly adapted to the sealing behavior of the sealing plates 11.

In der Angiessphase werden die Dichtplatten 11 zunächst während einer vergleichsweise kurzen Zeit an die Stirnflächen der Giessrollen 1, 2 angepresst und anschliessend von der Anpresskraft entlastet und in Position gehalten, bevor die "Stop and Go"-Anstellung der Dichtplatten vorgenommen wird.In the gating phase, the sealing plates 11 are first pressed for a comparatively short time on the faces of the casting rolls 1, 2 and then relieved of the contact pressure and held in position before the "stop and go" -Anstellung the sealing plates is made.

Dabei kann die Zeit für das Halten der Position, die Haltezeit, wesentlich länger sein als die Zeit für das Anstellen mit einer vorgegebenen Kraft, und zwar jeweils nach 5 Umdrehungen, wobei dies bis auch jeweils nach 500 Umdrehungen erfolgen kann. Die Länge der Anstellzeit hängt vom Durchmesser der Giessrollen 1, 2, vom Giessrollen-Material, von der Grösse der Anpress- bzw. Anstellkraft, von der Giessgeschwindigkeit, von der Stahlqualität, vom Material der Dichtplatten 11 und/oder von anderen Faktoren ab. In Grössenordnung handelt es sich um eine Anstellzeit von 1 bis 30 Sekunden. Der Anpressdruck beträgt in der Regel zwischen 0.05 und 1.00 N/mm2.In this case, the time for holding the position, the holding time, be much longer than the time for hiring with a predetermined force, in each case after 5 revolutions, and this can also take place after 500 revolutions. The length of the setting time depends on the diameter of the casting rolls 1, 2, the casting roll material, the size of the contact pressure or contact force, the casting speed, the steel quality, the material of the sealing plates 11 and / or other factors. In the order of magnitude it is an adjustment time of 1 to 30 seconds. The contact pressure is usually between 0.05 and 1.00 N / mm 2 .

In einer besonders bevorzugten Weise können die Seitenabdichtungen 10 vor dem jeweiligen erneuten Anstellen in vertikaler und/oder horizontaler Richtung verschoben oder verschwenkt werden, um einen ungleichmässigen Verschleiss zu vermeiden bzw. zu vermindern.In a particularly preferred manner, the lateral seals 10 can be displaced or pivoted in the vertical and / or horizontal direction before the respective renewed setting in order to avoid or reduce uneven wear.

Das in bestimmten Zeitabständen stattfindende Anstellen der Dichtplatten 11 mit einer vorgegebenen Kraft wird mittels eines Überwachungs- und Steuerungssystems gesteuert.The setting of the sealing plates 11 at a predetermined time with a predetermined force is controlled by means of a monitoring and control system.

Mit dem erfindungsgemässen Verfahren zum Betrieb einer Bandgiessmaschine, das durch längere Haltezeiten zwischen einzelnen Anstellzeiten charakterisiert ist, wird der Verschleiss der Dichtplatten 11 sowie der Giessrollen-Stirnseiten deutlich verringert. Die durch den geringeren Verschleiss bedingten, längeren Standzeiten führen zu deutlich geringeren Kosten für die Dichtplatten pro Tonne Stahl, zu längeren Giesssequenzen und zu einer höheren Ausbringung, wodurch die Wirtschaftlichkeit des Verfahrens wesentlich verbessert wird.With the method according to the invention for operating a strip casting machine, which is characterized by longer holding times between individual setting times, the wear of the sealing plates 11 and the casting wheels end faces significantly reduced. The longer service lives due to the lower wear lead to significantly lower costs for the sealing plates per tonne of steel, to longer casting sequences and to a higher output, as a result of which the economic efficiency of the process is substantially improved.

Claims (12)

  1. Method for operating a strip casting machine for producing a metal strip by a continuous pouring of a metal melt between two casting rolls (1, 2) forming a casting gap, wherein for a lateral limitation of a casting gap, there are provided lateral seals (10) provided with sealing plates (11), which sealing plates (11) are placed respectively pressed against end surfaces of the casting rolls (1, 2) with a predetermined placement or press-on force a value of which is adjustable,
    characterized in
    that the sealing plates (11) are placed in repeatable go- and stop-steps, wherein with the "go"-step the sealing plates (11) are placed against the end surfaces of the casting rolls (1, 2) with a predetermined force and time, and are held in the placed position for a predetermined time.
  2. Placing method according to claim 1,
    characterized in
    that the placement force of the sealing plates (11) against the end surfaces of the casting rolls (1, 2), if needed, is periodically varied.
  3. Placing method according to claim 1 or 2,
    characterized in
    that in the placement position the holding time of the sealing plates (11) is varied.
  4. Method according to any one of the claims 1 to 3,
    characterized in
    that the placement force and the placement time is adapted to the sealing behaviour of the sealing plates (1, 2) during the casting time.
  5. Placing method according to one or several of the claims 1 to 4,
    characterized in
    that the holding time is noticeably longer than the placement time.
  6. Placing method according to one or several of the claims 1 to 5,
    characterized in
    that in the beginning of the casting phase, the sealing plates (11) first, for a relatively short time, are pressed against the end surfaces of the casting rolls (1, 2) and are subsequently released from the press-on force and are held in a position before the "stop and go" placement of the sealing plates is carried out.
  7. Placing method according to one or several of the preceding claims,
    characterized in
    that the holding time is at least the double of the placement time.
  8. Placing method according to one or several of the preceding claims,
    characterized in
    that the holding time exceeds the placement time maximum in 300 times.
  9. Placing method according to one or several of the preceding claims,
    characterized in
    that a length of the placement time is adjusted dependent on a diameter of the casting rolls (1, 2), material of the end surfaces of the casting rolls, a value of the pressed-on or placement force, the casting speed, the steel quality, the material of the sealing plates (11), and/or other factors.
  10. Placing method according to one or several of the preceding claims,
    characterized in
    that the length of the placement time amounts to from 1 to 30 sec.
  11. Placing method according to one or several of the preceding claims,
    characterized in
    that the lateral seals (10) receiving the sealing plates (11) are displaced or pivoted in vertical and/or horizontal direction before the respective placement.
  12. Placing method according to one or several of the preceding claims,
    characterized in
    that the placement is effected with a press-on pressure between 0.05 and 1.00 N/mm2.
EP04740295A 2003-07-01 2004-06-25 Method for operating a strip casting machine for producing a metal strip Expired - Lifetime EP1646464B1 (en)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
CH11612003 2003-07-01
PCT/EP2004/006884 WO2005002757A1 (en) 2003-07-01 2004-06-25 Method for operating a strip casting machine for producing a metal strip

Publications (2)

Publication Number Publication Date
EP1646464A1 EP1646464A1 (en) 2006-04-19
EP1646464B1 true EP1646464B1 (en) 2006-11-29

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Family Applications (1)

Application Number Title Priority Date Filing Date
EP04740295A Expired - Lifetime EP1646464B1 (en) 2003-07-01 2004-06-25 Method for operating a strip casting machine for producing a metal strip

Country Status (6)

Country Link
US (1) US7337827B2 (en)
EP (1) EP1646464B1 (en)
CN (1) CN100366364C (en)
AT (1) ATE346707T1 (en)
DE (1) DE502004002199D1 (en)
WO (1) WO2005002757A1 (en)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO2009103802A1 (en) * 2008-02-22 2009-08-27 Thyssenkrupp Nirosta Gmbh Method and twin roll caster for the production of strip cast from a molten metal

Families Citing this family (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US7308930B2 (en) 2006-03-09 2007-12-18 Nucor Corporation Method of continuous casting steel strip
JP5837758B2 (en) 2011-04-27 2015-12-24 キャストリップ・リミテッド・ライアビリティ・カンパニー Twin roll casting apparatus and control method thereof
US10046384B2 (en) 2015-09-30 2018-08-14 Nucor Corporation Side dam with pocket
CN110087800B (en) * 2016-12-26 2022-02-15 宝山钢铁股份有限公司 Installation device and installation method of double-roller thin-strip continuous casting side sealing plate

Family Cites Families (9)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR2652021A1 (en) * 1989-06-15 1991-03-22 Siderurgie Fse Inst Rech LATERAL SHUTTER WALL FOR CONTINUOUS CASTING INSTALLATION BETWEEN MOBILE WALLS.
JPH0741376B2 (en) * 1990-06-11 1995-05-10 新日本製鐵株式会社 Thin strip continuous casting method
FR2717410B1 (en) * 1994-03-15 1996-06-07 Usinor Sacilor Method and device for continuous casting between cylinders.
FR2721843B1 (en) * 1994-06-30 1996-08-30 Unisor Sacilor CONTINUOUS CASTING ARRANGEMENT BETWEEN CYLINDERS WITH APPLIED SIDE SHUTTER WALLS
KR100333070B1 (en) * 1997-12-20 2002-10-18 주식회사 포스코 Method for controlling position of edge dams in twin roll type strip caster
AUPP331598A0 (en) * 1998-05-04 1998-05-28 Bhp Steel (Jla) Pty Limited Strip casting
CH691574A5 (en) * 1999-09-24 2001-08-31 Main Man Inspiration Ag The strip casting machine for producing a metal strip.
CN1168558C (en) * 2002-04-25 2004-09-29 重庆大学 Side seal mechanism for double-roller continuous casting machine
AT412195B (en) * 2002-06-25 2004-11-25 Voest Alpine Ind Anlagen METHOD FOR PRODUCING A METAL STRIP WITH A TWO-ROLLING CASTING DEVICE

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO2009103802A1 (en) * 2008-02-22 2009-08-27 Thyssenkrupp Nirosta Gmbh Method and twin roll caster for the production of strip cast from a molten metal
US8453712B2 (en) 2008-02-22 2013-06-04 Outokumpu Nirosta Gmbh Method and twin roll caster for the production of strip cast from a molten metal

Also Published As

Publication number Publication date
US20070006990A1 (en) 2007-01-11
EP1646464A1 (en) 2006-04-19
US7337827B2 (en) 2008-03-04
WO2005002757A1 (en) 2005-01-13
ATE346707T1 (en) 2006-12-15
CN1816404A (en) 2006-08-09
CN100366364C (en) 2008-02-06
DE502004002199D1 (en) 2007-01-11

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