EP2326441B1 - Electromagnetic braking device on continuous casting molds - Google Patents

Electromagnetic braking device on continuous casting molds Download PDF

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Publication number
EP2326441B1
EP2326441B1 EP09777198.4A EP09777198A EP2326441B1 EP 2326441 B1 EP2326441 B1 EP 2326441B1 EP 09777198 A EP09777198 A EP 09777198A EP 2326441 B1 EP2326441 B1 EP 2326441B1
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Prior art keywords
mould
poles
braking device
continuous casting
mold
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EP09777198.4A
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German (de)
French (fr)
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EP2326441A1 (en
Inventor
Norbert Vogl
Jörn HOFFMEISTER
Axel Weyer
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SMS Group GmbH
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SMS Group GmbH
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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
    • B22D11/10—Supplying or treating molten metal
    • B22D11/11—Treating the molten metal
    • B22D11/114—Treating the molten metal by using agitating or vibrating means
    • B22D11/115—Treating the molten metal by using agitating or vibrating means by using magnetic fields
    • 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
    • B22D11/10—Supplying or treating molten metal
    • 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
    • B22D11/18—Controlling or regulating processes or operations for pouring

Definitions

  • the invention relates to a method and apparatus for casting of liquid metals, in particular of liquid steel materials for the production of slab and thin slab products with format widths of 750 to 3500 mm and format thicknesses of 30 to 500 mm in a continuous casting, the product quality with a Electromagnetic braking device is equipped, consisting of coils with cores and yoke, through the generated magnetic field effect, the flow conditions within the liquid metal are influenced in the mold.
  • an electromagnetic brake This consists of coils with cores and yokes, with which magnetic fields are generated, which act on the existing flow conditions of the steel bath within the mold. For the fullest possible unfolding of the effectiveness of the magnetic fields, it is necessary to bring the magnetic fields as close as possible to the continuous casting mold.
  • the electromagnetic brake systems moved up after the onset of the mold in the casting machine hydraulically or electromechanically to the mold or they are installed in different arrangements firmly on the mold of the continuous casting.
  • the coil or coil combinations are each positioned with core from the outside of the mold or on the water-flowed water box or copper plate back, or the coil is stationary fixed to the steel structure and a movable core is moved through them into the mold.
  • an electromagnetic brake device for inflowing into a continuous casting mold molten steel, comprising at least one magnetic coil having a Kokillenbreitrough assignable ferromagnetic core.
  • the core consists on the one hand of a magnetic coil receiving, movable in the distance to the broad side walls main part and on the other hand in water boxes of the mold fixedly arranged additional parts, the core parts in collapsed operating position u-shaped Yoke to form a closed magnetic flux.
  • a magnetic brake is known for a continuous casting mold, in which a magnetic field generated by permanent magnets is to influence the flow of the liquid metal.
  • the permanent magnets arranged on the mold are differently adjustable for a different field strength distribution in groups.
  • permanent magnets are arranged in the water box of the continuous casting mold and can be set for direct contact with the mold plate.
  • an apparatus for casting metals with an electromagnetic brake comprising magnetic cores permanently attached to one side of the mold such that they cover substantially the entire width of the mold except for a central portion and which are connected to a detachable yoke wherein the winding is arranged around the yoke such that the central axis of the winding extends substantially parallel to a longitudinal axis of the mold and at right angles to the casting direction of the mold.
  • an electromagnetic brake device for inflowing into a continuous casting mold molten steel, comprising at least one magnetic coil having a Kokillenbreitrough assignable ferromagnetic core.
  • the core consists on the one hand of a magnetic coil receiving, movable in the distance to the broad side walls main part and on the other hand in water boxes of the mold fixedly arranged additional parts, the core parts in collapsed operating position u-shaped Yoke to form a closed magnetic flux.
  • a magnetic brake is known for a continuous casting mold, in which a magnetic field generated by permanent magnets is to influence the flow of the liquid metal.
  • the permanent magnets arranged on the mold are differently adjustable for a different field strength distribution in groups.
  • permanent magnets are arranged in the water box of the continuous casting mold and can be set for direct contact with the mold plate.
  • an apparatus for casting metals with an electromagnetic brake comprising magnetic cores permanently attached to one side of the mold such that they cover substantially the entire width of the mold except for a central portion and which are connected to a detachable yoke wherein the winding is arranged around the yoke such that the central axis of the winding extends substantially parallel to a longitudinal axis of the mold and at right angles to the casting direction of the mold.
  • the JP 08 01 9841 discloses a method and mold for casting molten metals to produce slab products in a continuous casting plant equipped with an electromagnetic braking device to improve product quality.
  • the braking device consists of coils with cores and yoke, through the generated magnetic field effect, the flow conditions are influenced within the liquid metal in the mold of the continuous casting.
  • For direct and direct electromagnetic influence exiting from the Kokillentauchrohr liquid jets at least two poles are arranged symmetrically to the vertical reference line of Kokillentauchrohrs each Kokillenbreitseite, the two poles on each Kokillenbreitseite with the pronounced at their outlet cross sections main axes with respect to the vertical reference line of the Kokillentauchrohrs in are aligned at a certain angle.
  • the object of the invention is to provide for the poles of the electromagnetic brake systems of continuous casting molds such an arrangement and orientation, by influencing the liquid flow of the liquid steel from the dip tube of the mold can be performed in a direct manner.
  • the electromagnetic braking device By aligning the poles of the electromagnetic braking device in the main flow direction of the immersed tube flow, the electromagnetic braking device as a locally acting field influences the liquid jets emerging from the Kokillentauchrohr directly or directly with respect to their direction, their velocity profile and turbulence structure.
  • the formation of harmful fluctuations in the speed of the bath level is advantageously at least limited and thus controllable.
  • the achievable results include low turbulence in the bath level, less undesirable inclusions of, for example, casting powder or slag and a homogeneous temperature distribution and thus an overall improved quality of the castings and an increase in the casting speed.
  • the braking device is operated essentially with a permanent field and adjustable field strength by means of direct current; but also an operation with changing field strength and possible direction reversal by means of alternating current can alternatively be carried out.
  • the poles of the electromagnetic brake device according to the invention have an arbitrary outlet cross-section with the expression of a major axis, wherein this outlet cross-section may be formed for example as a triangle, a rectangle, any polygon or with an arcuate contour.
  • the orientation of the major axes is defined so that the major axes of the poles with the vertical reference line of the chill tube above the poles are at an angle ⁇ 1 between 1 ° to 89 ° or alternatively below the poles at an angle ⁇ 2 between 1 ° to 89 °.
  • the settings of the angle ⁇ 1 or ⁇ 2 are adjusted manually by rotating the poles prior to operation of the continuous casting or they are adjusted according to a further embodiment of the invention during operation of the continuous casting variable by motor rotation of the poles and then changed if necessary, the motor setting the angle, for example by means of motor, hydraulic rotary drive, hydraulic or pneumatic cylinder takes place.
  • the possible pivot points of the poles are preferably on their main axis, but they can also be arranged depending on their geometric configuration alternatively outside the poles.
  • the electromagnetic braking device with coils, cores and yoke is arranged directly on the mold, so that it oscillates together with the mold during operation of the continuous casting machine.
  • the electromagnetic braking device is arranged so as to be stationary apart from the mold, so that it now does not participate in the oscillation of the mold.
  • the pole ends on the mold and the coils, the sub-core and the yoke are arranged on the fixed machine construction.
  • FIG. 1 the mold 1 of a continuous casting plant with arranged in the lower region of the mold dipping tube 2 electromagnetic braking device is shown in a perspective view.
  • the electromagnetic braking device consisting of the cores 14, the yoke 14 'and the magnetic coils 13, according to the invention is arranged so that on each Kokillenbreitseite 3 two poles 10 are opposite to each other. They are aligned symmetrically to the vertical reference line 4 of the chill tube 2 to the main flow direction of the dip tube flow, that its main axis 12 of the outlet cross section intersects this reference line 4 at a certain angle ⁇ 1 .
  • the liquid jets flowing into the mold 1 are directly influenced by the magnetic field lines 15 established between the poles 10.
  • the in the perspective view of Fig. 1 not shown main flow direction of the dip tube flow is in the FIGS. 2 to 5 shown in each sectioned side view.
  • FIG. 2 shows a mold 1 for thick slabs with from the Kokillentauchrohr 2 at approximately right angles laterally exiting main flow direction 5 of the dip tube flow.
  • a pole 10 are arranged laterally in the lower region of the mold dipping tube 2 such that the main axes 12 of the outlet cross section 11 a of each pole 10 intersect the vertical reference line 4 of the mold dipping tube 2 at an angle ⁇ . Since the point of intersection is above the poles 10, this angle is designated ⁇ 1 .
  • FIG. 3 In the FIG. 3 is a mold 1 for thin slabs shown with the Kokillentauchrohr 2 with about 45 ° laterally exiting main flow direction 5 of the dip tube flow.
  • the arrangement of the poles 10 with respect to this main current direction 5 is opposite to FIG. 2 is changed so that the intersection of the main axes 12 of the outlet cross-section 11 a of each pole 10 is now located with the vertical reference line 4 of the mold dip tube 2 below the poles 10, and therefore this angle to distinguish from the angle ⁇ 1 is denoted by ⁇ . 2
  • FIGS. 4 and 5 An alternative embodiment of an electromagnetic braking device for a thick slab mold 1 according to the Fig. 2 to adapt to changing conditions of emerging from the Kokillentauchrohr 2 liquid jets is in the FIGS. 4 and 5 shown.
  • the poles 10 of this embodiment are formed around a lying on the main axes 12 of the outlet cross-section 11 a pivot point 20 in the clockwise direction 18 and opposite 19 rotatable.
  • FIG. 5 were both poles 10 according to the direction of rotation 18 and 19 relative to the original position of the Fig. 4 rotated, whereby the original angle ⁇ 1 of Figures 2 and 4 to a new value ⁇ 1 'in the FIG. 5 was enlarged.
  • Exemplary possible rotations of the poles 10 are in the FIGS. 6 to 8 shown.
  • the poles 10 formed with an arcuate contour of their outlet cross-sections 11 e are arranged on the mold 1 symmetrically to the vertical reference line 4 of the mold dipping tube 2 in the region of the outlet opening 6.
  • the FIG. 6 shows an assumed starting position. Compared to this starting position of Fig. 6 were the left pole 10 in the direction of rotation 18, ie in the clockwise direction and the right pole 10 opposite in the direction of rotation 19 by an angle of 5 ° turned inwards, causing the in the FIG. 7 shown position of the poles was obtained.
  • One opposite the starting position of the FIG. 6 opposite rotation of the pole 10 outward by an angular amount of 20 ° results in the FIG. 8 illustrated pole position.

Description

Die Erfindung betrifft ein Verfahren und eine Vorrichtung zum Gießen von flüssigen Metallen, insbesondere von flüssigen Stahlwerkstoffen zur Erzeugung von Brammen- und Dünnbrammenprodukten mit Formatbreiten von 750 bis 3500 mm und Formatdicken von 30 bis 500 mm in einer Stranggießanlage, die zur Verbesserung der Produktqualität mit einer elektromagnetischen Bremseinrichtung ausgerüstet ist, bestehend aus Spulen mit Kernen und Joch, durch deren erzeugte Magnetfeldwirkung die Strömungsverhältnisse innerhalb des Flüssigmetalls in der Kokille beeinflusst werden.The invention relates to a method and apparatus for casting of liquid metals, in particular of liquid steel materials for the production of slab and thin slab products with format widths of 750 to 3500 mm and format thicknesses of 30 to 500 mm in a continuous casting, the product quality with a Electromagnetic braking device is equipped, consisting of coils with cores and yoke, through the generated magnetic field effect, the flow conditions within the liquid metal are influenced in the mold.

Zur Verbesserung der Produktqualität durch eine positive Beeinflussung der Strömungsverhältnisse innerhalb der Stranggießkokille ist es bekannt, diese mit einer elektromagnetischen Bremse auszurüsten. Diese besteht aus Spulen mit Kernen und Joch, mit denen Magnetfelder erzeugt werden, die auf die bestehenden Strömungsverhältnisse des Stahlbades innerhalb der Kokille einwirken. Zur möglichst vollen Entfaltung der Wirksamkeit der Magnetfelder ist es dabei erforderlich, die Magnetfelder möglichst nahe an die Stranggießkokille heranzuführen. Üblicherweise werden deshalb entweder die elektromagnetischen Bremssysteme erst nach dem Einsetzen der Kokille in die Gießmaschine hydraulisch oder elektromechanisch an die Kokille herangefahren oder sie sind in verschiedenen Anordnungen fest an der Kokille der Stranggießanlage installiert. Im Wesentlichem werden hierbei die Spule oder die Spulenkombinationen jeweils mit Kern von außen an die Kokille bzw. an den wasserdurchströmten Wasserkasten oder an der Kupferplattenrückseite positioniert, oder die Spule ist ortsfest am Stahlbau fixiert und ein beweglicher Kern wird durch sie hindurch in die Kokille bewegt.To improve the product quality by positively influencing the flow conditions within the continuous casting mold, it is known to equip these with an electromagnetic brake. This consists of coils with cores and yokes, with which magnetic fields are generated, which act on the existing flow conditions of the steel bath within the mold. For the fullest possible unfolding of the effectiveness of the magnetic fields, it is necessary to bring the magnetic fields as close as possible to the continuous casting mold. Usually, therefore, either the electromagnetic brake systems moved up after the onset of the mold in the casting machine hydraulically or electromechanically to the mold or they are installed in different arrangements firmly on the mold of the continuous casting. Essentially, in this case, the coil or coil combinations are each positioned with core from the outside of the mold or on the water-flowed water box or copper plate back, or the coil is stationary fixed to the steel structure and a movable core is moved through them into the mold.

So ist aus der WO 2004/022264 A1 eine elektromagnetische Bremsvorrichtung für in eine Stranggießkokille einströmende Stahlschmelze bekannt, umfassend mindestens eine Magnetspule mit einem den Kokillenbreitseiten zuordenbaren ferromagnetischen Kern. Zur Verringerung der oszillierenden Massen und um zugleich die Magnetfeldstärke zu erhöhen, besteht der Kern einerseits aus einem die Magnetspule aufnehmenden, im Abstand zu den Breitseitenwänden verfahrbaren Hauptteil und andererseits aus in Wasserkästen der Kokille fest angeordneten Zusatzteilen, wobei die Kernteile in zusammengefahrener Betriebsposition u-förmige Joche zur Ausbildung eines geschlossenen Magnetflusses ergeben.So is out of the WO 2004/022264 A1 an electromagnetic brake device for inflowing into a continuous casting mold molten steel, comprising at least one magnetic coil having a Kokillenbreitseiten assignable ferromagnetic core. To reduce the oscillating masses and at the same time to increase the magnetic field strength, the core consists on the one hand of a magnetic coil receiving, movable in the distance to the broad side walls main part and on the other hand in water boxes of the mold fixedly arranged additional parts, the core parts in collapsed operating position u-shaped Yoke to form a closed magnetic flux.

Aus der DE 10 2004 046 729 A1 ist eine magnetische Bremse für eine Stranggießkokille bekannt, bei der ein durch Permanentmagnete erzeugtes Magnetfeld eine Beeinflussung die Strömung des Flüssigmetalls herbeiführen soll. Um eine Variation der magnetischen Feldstärke zu erhalten, sind die an der Kokille angeordnete Permanentmagnete für eine unterschiedliche Feldstärkenverteilung in Gruppen unterschiedlich anstellbar. Hierbei ist auch vorgesehen, dass Permanentmagnete im Wasserkasten der Stranggießkokille angeordnet und zur direkten Anlage an die Kokillenplatte anstellbar sind.From the DE 10 2004 046 729 A1 A magnetic brake is known for a continuous casting mold, in which a magnetic field generated by permanent magnets is to influence the flow of the liquid metal. In order to obtain a variation of the magnetic field strength, the permanent magnets arranged on the mold are differently adjustable for a different field strength distribution in groups. In this case, it is also provided that permanent magnets are arranged in the water box of the continuous casting mold and can be set for direct contact with the mold plate.

In der DE 600 16 255 T2 wird eine Vorrichtung zum Gießen von Metallen mit einer elektromagnetischen Bremse beschrieben, umfassend Magnetkerne, die an einer Seite der Kokille so permanent befestigt sind, dass sie im Wesentlichen die gesamte Breite der Kokille mit Ausnahme eines zentralen Abschnitts bedecken und die mit einem abnehmbaren Joch verbunden sind, wobei die Wicklung um das Joch derart angeordnet ist, dass sich die Zentralachse der Wicklung im Wesentlichen parallel zu einer Längsachse der Kokille und rechtwinklig zur Gussrichtung der Kokille erstreckt. Durch die Maßnahmen wird erreicht, dass die ursprünglich vertikal gerichtete Strömungsgeschwindigkeit der flüssigen Metallschmelze im Bereich des Einlaufrohrs umgekehrt, zumindest aber stark vermindert (abgebremst) wird. Zusätzlich kommt es zu einer horizontalen und vertikalen Rotation der Schmelze.In the DE 600 16 255 T2 For example, there is described an apparatus for casting metals with an electromagnetic brake comprising magnetic cores permanently attached to one side of the mold such that they cover substantially the entire width of the mold except for a central portion and which are connected to a detachable yoke wherein the winding is arranged around the yoke such that the central axis of the winding extends substantially parallel to a longitudinal axis of the mold and at right angles to the casting direction of the mold. By the measures it is achieved that the originally vertically directed flow velocity of the liquid molten metal in the area of the inlet pipe is reversed, at least greatly reduced (decelerated). In addition, there is a horizontal and vertical rotation of the melt.

So ist aus der WO 2004/022264 A1 eine elektromagnetische Bremsvorrichtung für in eine Stranggießkokille einströmende Stahlschmelze bekannt, umfassend mindestens eine Magnetspule mit einem den Kokillenbreitseiten zuordenbaren ferromagnetischen Kern. Zur Verringerung der oszillierenden Massen und um zugleich die Magnetfeldstärke zu erhöhen, besteht der Kern einerseits aus einem die Magnetspule aufnehmenden, im Abstand zu den Breitseitenwänden verfahrbaren Hauptteil und andererseits aus in Wasserkästen der Kokille fest angeordneten Zusatzteilen, wobei die Kernteile in zusammengefahrener Betriebsposition u-förmige Joche zur Ausbildung eines geschlossenen Magnetflusses ergeben.So is out of the WO 2004/022264 A1 an electromagnetic brake device for inflowing into a continuous casting mold molten steel, comprising at least one magnetic coil having a Kokillenbreitseiten assignable ferromagnetic core. To reduce the oscillating masses and at the same time to increase the magnetic field strength, the core consists on the one hand of a magnetic coil receiving, movable in the distance to the broad side walls main part and on the other hand in water boxes of the mold fixedly arranged additional parts, the core parts in collapsed operating position u-shaped Yoke to form a closed magnetic flux.

Aus der DE 10 2004 046 729 A1 ist eine magnetische Bremse für eine Stranggießkokille bekannt, bei der ein durch Permanentmagnete erzeugtes Magnetfeld eine Beeinflussung die Strömung des Flüssigmetalls herbeiführen soll. Um eine Variation der magnetischen Feldstärke zu erhalten, sind die an der Kokille angeordnete Permanentmagnete für eine unterschiedliche Feldstärkenverteilung in Gruppen unterschiedlich anstellbar. Hierbei ist auch vorgesehen, dass Permanentmagnete im Wasserkasten der Stranggießkokille angeordnet und zur direkten Anlage an die Kokillenplatte anstellbar sind.From the DE 10 2004 046 729 A1 A magnetic brake is known for a continuous casting mold, in which a magnetic field generated by permanent magnets is to influence the flow of the liquid metal. In order to obtain a variation of the magnetic field strength, the permanent magnets arranged on the mold are differently adjustable for a different field strength distribution in groups. In this case, it is also provided that permanent magnets are arranged in the water box of the continuous casting mold and can be set for direct contact with the mold plate.

In der DE 600 16 255 T2 wird eine Vorrichtung zum Gießen von Metallen mit einer elektromagnetischen Bremse beschrieben, umfassend Magnetkerne, die an einer Seite der Kokille so permanent befestigt sind, dass sie im Wesentlichen die gesamte Breite der Kokille mit Ausnahme eines zentralen Abschnitts bedecken und die mit einem abnehmbaren Joch verbunden sind, wobei die Wicklung um das Joch derart angeordnet ist, dass sich die Zentralachse der Wicklung im Wesentlichen parallel zu einer Längsachse der Kokille und rechtwinklig zur Gussrichtung der Kokille erstreckt. Durch die Maßnahmen wird erreicht, dass die ursprünglich vertikal gerichtete Strömungsgeschwindigkeit der flüssigen Metallschmelze im Bereich des Einlaufrohrs umgekehrt, zumindest aber stark vermindert (abgebremst) wird. Zusätzlich kommt es zu einer horizontalen und vertikalen Rotation der Schmelze.In the DE 600 16 255 T2 For example, there is described an apparatus for casting metals with an electromagnetic brake comprising magnetic cores permanently attached to one side of the mold such that they cover substantially the entire width of the mold except for a central portion and which are connected to a detachable yoke wherein the winding is arranged around the yoke such that the central axis of the winding extends substantially parallel to a longitudinal axis of the mold and at right angles to the casting direction of the mold. By the measures it is achieved that the originally vertically directed flow velocity of the liquid molten metal in the area of the inlet pipe is reversed, at least greatly reduced (decelerated). In addition, there is a horizontal and vertical rotation of the melt.

Die JP 08 01 9841 offenbart ein Verfahren und eine Kokille zum Gießen von flüssigen Metallen zur Erzeugung von Brammenprodukten in einer Stranggießanlage, die zur Verbesserung der Produktqualität mit einer elektromagnetischen Bremseinrichtung ausgerüstet ist. Die Bremseinrichtung besteht aus Spulen mit Kernen und Joch, durch deren erzeugte Magnetfeldwirkung die Strömungsverhältnisse innerhalb des Flüssigmetalls in der Kokille der Stranggießanlage beeinflusst werden. Zur direkten und unmittelbaren elektromagnetischen Beeinflussung der aus dem Kokillentauchrohr austretenden Flüssigkeitsstrahlen sind je Kokillenbreitseite mindestens zwei symmetrisch zur senkrechten Bezugslinie des Kokillentauchrohrs angeordnete Pole vorgesehen, wobei die beiden Pole auf jeder Kokillenbreitseite mit den bei ihren Austrittsquerschnitten ausgeprägten Hauptachsen in Bezug auf die senkrechte Bezugslinie des Kokillentauchrohrs in einem bestimmten Winkel ausgerichtet sind.The JP 08 01 9841 discloses a method and mold for casting molten metals to produce slab products in a continuous casting plant equipped with an electromagnetic braking device to improve product quality. The braking device consists of coils with cores and yoke, through the generated magnetic field effect, the flow conditions are influenced within the liquid metal in the mold of the continuous casting. For direct and direct electromagnetic influence exiting from the Kokillentauchrohr liquid jets at least two poles are arranged symmetrically to the vertical reference line of Kokillentauchrohrs each Kokillenbreitseite, the two poles on each Kokillenbreitseite with the pronounced at their outlet cross sections main axes with respect to the vertical reference line of the Kokillentauchrohrs in are aligned at a certain angle.

Schließlich wird in der DE 602 19 062 T2 eine Vorrichtung zum Gießen von Metallen beschrieben, wobei Magnetkerne und elektrische Leiterwicklungen umfassende Magnetelemente zum Erzeugen eines Magnetfeldes durch eine angelegte Mehrphasen-Wechselspannung entlang jeder Längsseite der Kokille angeordnet sind. Durch die Anordnung solcher magnetischer Elemente werden Bewegungen des geschmolzenen Materials in dem Bereich der oberen Oberfläche in den Endbereichen beeinflusst und ein Bremsen der Abwärtsbewegung der Schmelze ermöglicht.Finally, in the DE 602 19 062 T2 describes a device for casting metals, wherein magnetic cores and electrical conductor windings comprising magnetic elements for generating a magnetic field by an applied multiphase AC voltage along each longitudinal side of the mold are arranged. By arranging such magnetic elements, movements of the molten material in the area of the upper surface in the end portions are affected and braking of the downward movement of the melt is enabled.

Ausgehend von diesem geschilderten Stand der Technik besteht die Aufgabe der Erfindung darin, für die Pole der elektromagnetischen Bremssysteme von Stranggießkokillen eine solche Anordnung und Ausrichtung anzugeben, durch die eine Beeinflussung der Flüssigkeitsströmung des Flüssigstahls aus dem Tauchrohr der Kokille in direkter Weise durchgeführt werden kann.Based on this described prior art, the object of the invention is to provide for the poles of the electromagnetic brake systems of continuous casting molds such an arrangement and orientation, by influencing the liquid flow of the liquid steel from the dip tube of the mold can be performed in a direct manner.

Die gestellte Aufgabe wird mit den kennzeichnenden Merkmalen des Anspruchs 1 dadurch gelöst, dass zur direkten bzw. unmittelbaren elektromagnetischen Beeinflussung der aus dem Kokillentauchrohr austretenden Flüssigkeitsstrahlen je Kokillenbreitseite mindestens zwei symmetrisch zur senkrechten Bezugslinie des Kokillentauchrohrs angeordnete Pole mit ihren Hauptachsen des Austrittsquerschnitts in einem bestimmten Winkel α1 bzw. α2 entsprechend ausgerichtet werden.The stated object is achieved with the characterizing features of claim 1, characterized in that for direct or immediate electromagnetic influence exiting the Kokillentauchrohr liquid jets per Kokillenbreitseite at least two symmetrically to the vertical reference line of the Kokillentauchrohrs arranged poles with their main axes of the outlet cross-section at a certain angle α 1 and α 2 are aligned.

Durch die Ausrichtung der Pole der elektromagnetischen Bremseinrichtung in die Hauptstromrichtung der Tauchrohrströmung beeinflusst die elektromagnetische Bremseinrichtung als lokal wirkendes Feld die aus dem Kokillentauchrohr austretenden Flüssigkeitsstrahlen direkt bzw. unmittelbar bezüglich ihrer Richtung, ihrem Geschwindigkeitsprofil und ihrer Turbulenzstruktur. Durch die in dieser Weise modifizierten Flüssigkeitsstrahlen werden mit Vorteil die Entstehung von schädlichen Geschwindigkeitsschwankungen im Badspiegel zumindest begrenzt und sind dadurch kontrollierbar. Die hierdurch erzielbaren Ergebnisse sind u. a. geringe Turbulenzen im Badspiegel, weniger unerwünschte Einschlüsse von beispielsweise Gießpulver oder Schlacke und eine homogene Temperaturverteilung und damit insgesamt eine verbesserte Qualität der Gießprodukte und eine Steigerung der Gießgeschwindigkeit.By aligning the poles of the electromagnetic braking device in the main flow direction of the immersed tube flow, the electromagnetic braking device as a locally acting field influences the liquid jets emerging from the Kokillentauchrohr directly or directly with respect to their direction, their velocity profile and turbulence structure. By virtue of the liquid jets modified in this way, the formation of harmful fluctuations in the speed of the bath level is advantageously at least limited and thus controllable. The achievable results include low turbulence in the bath level, less undesirable inclusions of, for example, casting powder or slag and a homogeneous temperature distribution and thus an overall improved quality of the castings and an increase in the casting speed.

Durch die konzentrierte Wirkung der erfindungsgemäßen Polanordnung und Polausbildung der elektromagnetischen Bremseinrichtung auf die Tauchrohrströmung ist der erforderliche Leistungsbedarf der Bremseinrichtung sehr gering und beträgt nur ca. ¼ bis ½ der sonst aufzubringenden elektrischen Leistung, wobei keine formatbreitenabhängige Anpassung der Bremseinrichtung, sondern nur eine Einstellung der Feldstärke in Abhängigkeit zur Durchsatzmenge vorzusehen ist.Due to the concentrated effect of the pole arrangement according to the invention and Polausbildung the electromagnetic braking device on the dip tube flow of the required power requirement of the braking device is very low and is only about ¼ to ½ of the otherwise applied electrical power, with no format width-dependent adjustment of the braking device, but only a setting of the field strength is to be provided depending on the flow rate.

Die Bremseinrichtung wird dabei im Wesentlichen mit einem permanenten Feld und einstellbarer Feldstärke mittels Gleichstrom betrieben; aber auch ein Betrieb mit wechselnder Feldstärke und möglicher Richtungsumkehr mittels Wechselstrom kann alternativ durchgeführt werden.The braking device is operated essentially with a permanent field and adjustable field strength by means of direct current; but also an operation with changing field strength and possible direction reversal by means of alternating current can alternatively be carried out.

Die Pole der erfindungsgemäßen elektromagnetischen Bremseinrichtung weisen einen beliebigen Austrittsquerschnitt unter Ausprägung einer Hauptachse auf, wobei dieser Austrittsquerschnitt beispielsweise als Dreieck, als Rechteck, als beliebiges Vieleck oder mit einer bogenförmigen Kontur ausgebildet sein kann.The poles of the electromagnetic brake device according to the invention have an arbitrary outlet cross-section with the expression of a major axis, wherein this outlet cross-section may be formed for example as a triangle, a rectangle, any polygon or with an arcuate contour.

Gemäß der Erfindung wird die Ausrichtung der Hauptachsen so definiert durchgeführt, dass sich die Hauptachsen der Pole mit der senkrechten Bezugslinie des Kokillentauchrohrs oberhalb der Pole in einem Winkel α1 zwischen 1° bis 89° oder alternativ unterhalb der Pole in einem Winkel α2 zwischen 1° bis 89° schneiden.According to the invention, the orientation of the major axes is defined so that the major axes of the poles with the vertical reference line of the chill tube above the poles are at an angle α 1 between 1 ° to 89 ° or alternatively below the poles at an angle α 2 between 1 ° to 89 °.

Die Einstellungen der Winkel α1 bzw. α2 werden vor dem Betrieb der Stranggießanlage durch Drehung der Pole manuell eingestellt oder sie werden nach einer weiteren Ausführungsform der Erfindung während des Betriebs der Stranggießanlage variabel durch motorische Drehung der Pole eingestellt und dann bei Bedarf geändert, wobei die motorische Einstellung der Winkel beispielsweise mittels Motor, Hydraulikdrehantrieb, Hydraulik- oder Pneumatikzylinder erfolgt. Die möglichen Drehpunkte der Pole liegen vorzugsweise auf ihrer Hauptachse, sie können aber auch je nach ihrer geometrischen Ausbildung alternativ außerhalb der Pole angeordnet sein.The settings of the angle α 1 or α 2 are adjusted manually by rotating the poles prior to operation of the continuous casting or they are adjusted according to a further embodiment of the invention during operation of the continuous casting variable by motor rotation of the poles and then changed if necessary, the motor setting the angle, for example by means of motor, hydraulic rotary drive, hydraulic or pneumatic cylinder takes place. The possible pivot points of the poles are preferably on their main axis, but they can also be arranged depending on their geometric configuration alternatively outside the poles.

In einer möglichen Ausführung der Erfindung ist die elektromagnetische Bremseinrichtung mit Spulen, Kernen und Joch direkt auf der Kokille angeordnet, so dass sie während des Betriebs der Stranggießanlage gemeinsam mit der Kokille oszilliert.In one possible embodiment of the invention, the electromagnetic braking device with coils, cores and yoke is arranged directly on the mold, so that it oscillates together with the mold during operation of the continuous casting machine.

In einer weiteren möglichen Ausführung der Erfindung ist die elektromagnetische Bremseinrichtung getrennt von der Kokille ortsfest angeordnet, so dass sie nun die Oszillation der Kokille nicht mit ausführt.In a further possible embodiment of the invention, the electromagnetic braking device is arranged so as to be stationary apart from the mold, so that it now does not participate in the oscillation of the mold.

Schließlich ist auch eine Auftrennung der elektromagnetischen Bremseinrichtung möglich, wobei beispielsweise die Polenden auf der Kokille und die Spulen, der Teilkern sowie das Joch auf der ortsfesten Maschinenkonstruktion angeordnet sind.Finally, a separation of the electromagnetic braking device is possible, for example, the pole ends on the mold and the coils, the sub-core and the yoke are arranged on the fixed machine construction.

Weitere Vorteile und Einzelheiten der Erfindung werden nachfolgend an in schematischen Zeichnungsfiguren dargestellten Ausführungsbeispielen näher erläutert.Further advantages and details of the invention are explained in more detail below with reference to exemplary embodiments illustrated in schematic drawing figures.

Es zeigen:

Fig. 1
eine Kokille mit elektromagnetischer Bremseinrichtung in perspektivischer Darstellung,
Fig. 2
eine Kokille für Dickbrammen mit elektromagnetischer Bremseinrichtung in geschnittener Seitenansicht,
Fig. 3
eine Kokille für Dünnbrammen mit elektromagnetischer Bremseinrichtung in geschnittener Seitenansicht,
Fig. 4 u. 5
die Kokille der Fig. 2 mit drehbaren Polen in unterschiedlicher Winkelstellung,
Fig. 6 - 8
die Kokille mit drehbaren Polen in unterschiedlicher Winkelstellung in einer alternativen Polausbildung,
Fig. 9
beispielhafte Polausbildungen mit Darstellung der Hauptachse.
Show it:
Fig. 1
a mold with electromagnetic braking device in perspective view,
Fig. 2
a mold for thick slabs with electromagnetic braking device in a sectional side view,
Fig. 3
a mold for thin slabs with electromagnetic braking device in a sectional side view,
Fig. 4 u. 5
the mold of the Fig. 2 with rotatable poles in different angular positions,
Fig. 6-8
the mold with rotatable poles in different angular position in an alternative Polausbildung,
Fig. 9
exemplary Polausbildungen showing the main axis.

In der Figur 1 ist die Kokille 1 einer Stranggießanlage mit im unteren Bereich des Kokillentauchrohrs 2 angeordneter elektromagnetischer Bremseinrichtung in einer perspektivischen Ansicht dargestellt. Die elektromagnetische Bremseinrichtung, bestehend aus den Kernen 14, den Jochs 14' und den Magnetspulen 13, ist erfindungsgemäß so angeordnet, dass auf jeder Kokillenbreitseite 3 zwei Pole 10 einander gegenüberliegen. Sie sind symmetrisch zur senkrechten Bezugslinie 4 des Kokillentauchrohrs 2 zur Hauptstromrichtung der Tauchrohrströmung ausgerichtet, dass ihre Hauptachse 12 des Austrittsquerschnitts diese Bezugslinie 4 in einem bestimmten Winkel α1 schneidet. Durch den Bezug der Ausrichtung der Pole 10 zur Hauptstromrichtung der Tauchrohrströmung werden durch die zwischen den Polen 10 aufgebauten Magnetfeldlinien 15 auf direktem Wege die in die Kokille 1 einströmenden Flüssigkeitsstrahlen beeinflusst. Die in der perspektivischen Ansicht der Fig. 1 nicht eingezeichnete Hauptstromrichtung der Tauchrohrströmung wird in den Figuren 2 bis 5 in jeweils geschnittener Seitenansicht dargestellt.In the FIG. 1 the mold 1 of a continuous casting plant with arranged in the lower region of the mold dipping tube 2 electromagnetic braking device is shown in a perspective view. The electromagnetic braking device, consisting of the cores 14, the yoke 14 'and the magnetic coils 13, according to the invention is arranged so that on each Kokillenbreitseite 3 two poles 10 are opposite to each other. They are aligned symmetrically to the vertical reference line 4 of the chill tube 2 to the main flow direction of the dip tube flow, that its main axis 12 of the outlet cross section intersects this reference line 4 at a certain angle α 1 . By relating the orientation of the poles 10 to the main flow direction of the immersion tube flow, the liquid jets flowing into the mold 1 are directly influenced by the magnetic field lines 15 established between the poles 10. The in the perspective view of Fig. 1 not shown main flow direction of the dip tube flow is in the FIGS. 2 to 5 shown in each sectioned side view.

Die Figur 2 zeigt eine Kokille 1 für Dickbrammen mit aus dem Kokillentauchrohr 2 in etwa rechtem Winkel seitlich austretender Hauptstromrichtung 5 der Tauchrohrströmung. Entsprechend dieser Hauptstromrichtung 5 sind seitlich im unteren Bereich des Kokillentauchrohrs 2 jeweils ein Pol 10 so angeordnet, dass die Hauptachsen 12 des Austrittsquerschnitts 11a jedes Pols 10 die senkrechte Bezugslinie 4 des Kokillentauchrohrs 2 in einem Winkel α schneidet. Da sich der Schnittpunkt oberhalb der Pole 10 befindet, ist dieser Winkel mit α1 bezeichnet.The FIG. 2 shows a mold 1 for thick slabs with from the Kokillentauchrohr 2 at approximately right angles laterally exiting main flow direction 5 of the dip tube flow. Corresponding to this main flow direction 5, a pole 10 are arranged laterally in the lower region of the mold dipping tube 2 such that the main axes 12 of the outlet cross section 11 a of each pole 10 intersect the vertical reference line 4 of the mold dipping tube 2 at an angle α. Since the point of intersection is above the poles 10, this angle is designated α 1 .

In der Figur 3 ist eine Kokille 1 für Dünnbrammen dargestellt mit aus dem Kokillentauchrohr 2 mit etwa 45° seitlich austretender Hauptstromrichtung 5 der Tauchrohrströmung. Die Anordnung der Pole 10 bezüglich dieser Hauptstromrichtung 5 ist gegenüber der Figur 2 so geändert, dass der Schnittpunkt der Hauptachsen 12 des Austrittsquerschnitts 11a jedes Pols 10 mit der senkrechten Bezugslinie 4 des Kokillentauchrohrs 2 sich nun unterhalb der Pole 10 befindet, weshalb dieser Winkel zur Unterscheidung gegenüber dem Winkel α1 mit α2 bezeichnet ist.In the FIG. 3 is a mold 1 for thin slabs shown with the Kokillentauchrohr 2 with about 45 ° laterally exiting main flow direction 5 of the dip tube flow. The arrangement of the poles 10 with respect to this main current direction 5 is opposite to FIG. 2 is changed so that the intersection of the main axes 12 of the outlet cross-section 11 a of each pole 10 is now located with the vertical reference line 4 of the mold dip tube 2 below the poles 10, and therefore this angle to distinguish from the angle α 1 is denoted by α. 2

Eine alternative Ausbildung einer elektromagnetischen Bremseinrichtung für eine Dickbrammenkokille 1 entsprechend der Fig. 2 zur Anpassung an veränderte Bedingungen der aus dem Kokillentauchrohr 2 austretenden Flüssigkeitsstrahlen ist in den Figuren 4 und 5 dargestellt. Die Pole 10 dieses Ausführungsbeispiels sind um einen auf den Hauptachsen 12 des Austrittsquerschnitts 11a liegenden Drehpunkt 20 in Uhrzeigerichtung 18 bzw. entgegengesetzt 19 drehbar ausgebildet. In der Figur 5 wurden beide Pole 10 entsprechend der Drehrichtung 18 bzw. 19 gegenüber der ursprünglichen Stellung der Fig. 4 gedreht, wodurch der ursprüngliche Winkel α1 der Figuren 2 und 4 auf einen neuen Wert α1' in der Figur 5 vergrößert wurde.An alternative embodiment of an electromagnetic braking device for a thick slab mold 1 according to the Fig. 2 to adapt to changing conditions of emerging from the Kokillentauchrohr 2 liquid jets is in the FIGS. 4 and 5 shown. The poles 10 of this embodiment are formed around a lying on the main axes 12 of the outlet cross-section 11 a pivot point 20 in the clockwise direction 18 and opposite 19 rotatable. In the FIG. 5 were both poles 10 according to the direction of rotation 18 and 19 relative to the original position of the Fig. 4 rotated, whereby the original angle α 1 of Figures 2 and 4 to a new value α 1 'in the FIG. 5 was enlarged.

Beispielhafte mögliche Drehungen der Pole 10 werden in den Figuren 6 bis 8 dargestellt. Die mit einer bogenförmigen Kontur ihrer Austrittsquerschnitte 11e ausgebildeten Pole 10 sind an der Kokille 1 symmetrisch zur senkrechten Bezugslinie 4 des Kokillentauchrohrs 2 im Bereich der Austrittsöffnung 6 angeordnet. Die Figur 6 zeigt eine angenommene Ausgangsstellung. Gegenüber dieser Ausgangsstellung der Fig. 6 wurden der linke Pol 10 in Drehrichtung 18, also in Uhrzeigerichtung und der rechte Pol 10 entgegengesetzt in Drehrichtung 19 um jeweils einen Winkelbetrag von 5° nach innen gedreht, wodurch die in der Figur 7 dargestellte Stellung der Pole erhalten wurde. Eine gegenüber der Ausgangsstellung der Figur 6 entgegengesetzte Drehung der Pole 10 nach außen um einen Winkelbetrag von 20° ergibt die in der Figur 8 dargestellte Polstellung.Exemplary possible rotations of the poles 10 are in the FIGS. 6 to 8 shown. The poles 10 formed with an arcuate contour of their outlet cross-sections 11 e are arranged on the mold 1 symmetrically to the vertical reference line 4 of the mold dipping tube 2 in the region of the outlet opening 6. The FIG. 6 shows an assumed starting position. Compared to this starting position of Fig. 6 were the left pole 10 in the direction of rotation 18, ie in the clockwise direction and the right pole 10 opposite in the direction of rotation 19 by an angle of 5 ° turned inwards, causing the in the FIG. 7 shown position of the poles was obtained. One opposite the starting position of the FIG. 6 opposite rotation of the pole 10 outward by an angular amount of 20 ° results in the FIG. 8 illustrated pole position.

Um aufzuzeigen, welche Austrittsquerschnitte 11 der Pole 10 gemäß der Erfindung verwendbar sind, ist in der Figur 9 eine Auswahl möglicher unterschiedlicher Austrittsquerschnitte 11 angegeben. Die Austrittsquerschnitte 11 sind mit eingezeichneter Hauptachse 12 des Austrittsquerschnitts 11 dargestellt, wobei die obere Figurenreihe eine angenommene Ausgangsstellung und die untere Figurenreihe die in Drehrichtung 19 um einen Winkelbetrag gedrehte Endstellung zeigt. Im Einzelnen sind folgende Austrittsquerschnitte von links nach rechts dargestellt:

  • Rechteckiger Austrittsquerschnitt 11a
  • Dreieckiger Austrittsquerschnitt 11b
  • Als Vieleck ausgebildeter Austrittsquerschnitt 11c
  • Ovaler Austrittsquerschnitt 11d
To show which outlet cross-sections 11 of the poles 10 can be used according to the invention, is in the FIG. 9 a selection of possible different outlet cross sections 11 indicated. The outlet cross sections 11 are shown with the main axis 12 of the outlet cross section 11, the upper row of figures showing an assumed starting position and the lower row of figures showing the end position rotated in the direction of rotation 19 by an angular amount. In detail, the following outlet cross sections are shown from left to right:
  • Rectangular outlet cross section 11 a
  • Triangular outlet cross-section 11 b
  • Trained as a polygon outlet cross-section 11 c
  • Oval outlet cross section 11 d

BezugszeichenlisteLIST OF REFERENCE NUMBERS

11
Kokillemold
22
KokillentauchrohrKokillentauchrohr
33
Kokillenbreitseitemold broad
44
senkrechte Bezugslinie des Kokillentauchrohrsvertical reference line of the chill dipping tube
55
Hauptstromrichtung der TauchrohrströmungMain flow direction of the dip tube flow
66
Austrittsöffnung des KokillentauchrohrsOutlet opening of the chill dipping pipe
1010
Polpole
11a-e 11 ae
Austrittsquerschnitt des PolsOutlet cross section of the pole
1212
Hauptachse des Austrittsquerschnitts der PoleMain axis of the outlet cross section of the poles
1313
Magnetspulensolenoids
1414
Kerncore
14'14 '
Jochyoke
1515
Magnetfeldlinienmagnetic field lines
1616
Schnittpunkt oberhalb der PoleIntersection above the poles
1717
Schnittpunkt unterhalb der PoleIntersection below the poles
1818
Drehrichtung (Uhrzeigerichtung)Direction of rotation (clockwise direction)
1919
Drehrichtung (gegen Uhrzeigerichtung)Direction of rotation (counterclockwise)
2020
Drehpunktpivot point
α1 α 1
Winkel zwischen senkrechter Bezugslinie des Kokillentauchrohrs und Hauptachse im Austrittsquerschnitt der Pole mit Schnittpunkt oberhalb der PoleAngle between vertical reference line of the chill tube and main axis in the exit cross section of the poles with intersection above the poles
α2 α 2
Winkel zwischen senkrechter Bezugslinie des Kokillentauchrohrs und Hauptachse im Austrittsquerschnitt der Pole mit Schnittpunkt oberhalb der PoleAngle between vertical reference line of the chill tube and main axis in the exit cross section of the poles with intersection above the poles

Claims (9)

  1. Method of casting liquid metals for producing slab and thin-slab products with format widths of 750 to 3,500 millimetres and format thicknesses of 30 to 500 millimetres in a continuous casting plant which, for improvement of product quality, is equipped with an electromagnetic braking device consisting of coils (13) with cores (14) and yoke (14'), by the generated magnetic-field action of which the flow conditions within the liquid metal in the mould (1) of the continuous casting plant are influenced, wherein for direct and immediate electromagnetic influencing of the liquid jets exiting the mould immersion pipe (2) at least two poles arranged symmetrically with respect to the vertical reference line (4) of the mould immersion pipe (2) are provided per mould wide side (3),
    wherein the two poles on each mould wide side (3) are oriented by the main axes (12), which are present in the outlet cross-sections (11a-e) thereof, at a specific angle with respect to the vertical reference line (4) of the mould immersion pipe; and
    wherein the electromagnetic braking device is operated with a permanent field by means of direct current;
    characterised in that
    the angle α1, can be variably set by manual or motorised rotation of the poles during operation of the continuous casting plant and is changed when required;
    the orientation of the main axes (12) is defined in such a way that the main axes (12) of the poles (10) intersect the vertical reference line (4) of the mould immersion pipe (2) above the poles (10) at an angle α1 between 1° and 89°; and
    the field strength of the braking device is set in dependence on the throughput of the mould (1).
  2. Mould (1) of a continuous casting plant for the casing of liquid metals for producing slab and thin-slab products with format widths of 750 to 3,500 millimetres and format
    thicknesses of 30 to 500 millimetres, which, for improvement of product quality, is equipped with an electromagnetic braking device consisting of coils (13) with cores (14) and yoke (14'), by the generated magnetic-field action of which the flow conditions within the liquid metal in the mould (1) are influenced, wherein for direct and immediate electromagnetic influencing of the liquid jets exiting the mould immersion pipe (2) at least two poles arranged symmetrically with respect to the vertical reference line (4) of the mould immersion pipe (2) are provided per mould wide side (3),
    wherein the two poles on each mould wide side (3) are oriented by the main axes (12),
    which are present in the outlet cross-sections (11a-e) thereof, at a specific angle with respect to the vertical reference line (4) of the mould immersion pipe; and
    wherein the electromagnetic braking device is operated with a permanent field by means of direct current;
    characterised in that
    the poles (10) for manual or motorised setting of the angle α1 before or during operation of the continuous casting plant are constructed to be correspondingly rotatable;
    the two poles on each mould wide side (3) are so oriented that the main axes (12) present in the outlet cross-sections (11a-e) of the poles intersect the vertical reference line (4) of the mould immersion pipe (2) above the poles (10) at an angle α1, between 1° and 89°; and the field strength of the braking device is settable in dependence on the throughput of the mould (1).
  3. Mould (1) according to claim 2, characterised in that the poles (10) are formed, with creation of the main axis (12), with different outlet cross-sections (11a-e) such as a triangle, rectangle or any desired polygon or with a curved profile.
  4. Mould (1) according to one of claims 2 and 3, characterised in that the motorised setting of the angle is carried out by means of a motor, hydraulic rotary drive, hydraulic cylinder or pneumatic cylinder.
  5. Mould (1) according to any one of claims 2 to 4, characterised in that a possible fulcrum (20) of the pole (10) lies on its main axis (12).
  6. Mould (1) according to any one of claims 2 to 5, characterised in that a possible fulcrum (20) lies outside the pole (10).
  7. Mould (1) according to any one of claims 2 to 6, characterised in that the electromagnetic braking device with magnet coils (13), cores (14) and yoke (14') is arranged directly on the mould (1) and oscillates together with the mould (1) during operation of the continuous casting plant.
  8. Mould (1) according to any one of claims 2 to 6, characterised in that the electromagnetic braking device is arranged in stationary position separately from the mould (1) and does not execute the oscillation of the mould (1).
  9. Mould (1) according to any one of claims 2 to 6, characterised in that the electromagnetic braking device is divided up in such a way that the pole ends are arranged on the mould (1) and the magnet coils (13), core (14) and yoke (14') are arranged on the stationary machine construction.
EP09777198.4A 2008-07-15 2009-07-15 Electromagnetic braking device on continuous casting molds Active EP2326441B1 (en)

Applications Claiming Priority (3)

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DE102008033075 2008-07-15
DE102009029889A DE102009029889A1 (en) 2008-07-15 2009-06-23 Electromagnetic brake device on continuous casting molds
PCT/EP2009/005129 WO2010006773A1 (en) 2008-07-15 2009-07-15 Electromagnetic braking device on continuous casting molds

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KR (2) KR20130075785A (en)
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AT507590A1 (en) † 2008-11-20 2010-06-15 Siemens Vai Metals Tech Gmbh METHOD AND CONTINUOUS CASTING SYSTEM FOR MANUFACTURING THICK BRAMMS
DE102009056001A1 (en) 2009-08-28 2011-03-03 Sms Siemag Ag Method of pouring liquid metals
CN102825245B (en) * 2011-06-14 2015-07-08 鞍钢股份有限公司 Helical electromagnetic stirring device
EP3941659A1 (en) * 2019-03-18 2022-01-26 Primetals Technologies Austria GmbH Electromagnetic brake for a mold of a slab continuous casting assembly
CN113102704A (en) * 2021-04-12 2021-07-13 郭之珩 Electromagnetic stirring device and electromagnetic stirring processing method

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WO2010006773A1 (en) 2010-01-21
KR20130075785A (en) 2013-07-05
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RU2468886C2 (en) 2012-12-10
CN102099136B (en) 2014-07-02
JP5236806B2 (en) 2013-07-17
CA2730616A1 (en) 2010-01-21
CN102099136A (en) 2011-06-15
JP2011527942A (en) 2011-11-10
DE102009029889A1 (en) 2010-02-18
US20110162817A1 (en) 2011-07-07
RU2011105386A (en) 2012-08-20
KR20110025992A (en) 2011-03-14

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