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EP3597327A1 - Mould for producing a casting strand - Google Patents

Mould for producing a casting strand Download PDF

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Publication number
EP3597327A1
EP3597327A1 EP19182524.9A EP19182524A EP3597327A1 EP 3597327 A1 EP3597327 A1 EP 3597327A1 EP 19182524 A EP19182524 A EP 19182524A EP 3597327 A1 EP3597327 A1 EP 3597327A1
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EP
European Patent Office
Prior art keywords
mold
frame
screw
longitudinal
screw connection
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Granted
Application number
EP19182524.9A
Other languages
German (de)
French (fr)
Other versions
EP3597327B1 (en
Inventor
Christian Jaeger
Guenter Leitner
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Primetals Technologies Austria GmbH
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Primetals Technologies Austria GmbH
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Publication of EP3597327A1 publication Critical patent/EP3597327A1/en
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Publication of EP3597327B1 publication Critical patent/EP3597327B1/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
    • B22D11/04—Continuous casting of metals, i.e. casting in indefinite lengths into open-ended moulds
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B22—CASTING; POWDER METALLURGY
    • B22D—CASTING OF METALS; CASTING OF OTHER SUBSTANCES BY THE SAME PROCESSES OR DEVICES
    • B22D11/00—Continuous casting of metals, i.e. casting in indefinite lengths
    • B22D11/04—Continuous casting of metals, i.e. casting in indefinite lengths into open-ended moulds
    • B22D11/041—Continuous casting of metals, i.e. casting in indefinite lengths into open-ended moulds for vertical casting
    • 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

Definitions

  • the invention relates to a mold for producing a casting strand from a metallic melt.
  • a metallic melt is poured into a mold, in which a partially solidified casting strand is formed from the melt, which is subsequently pulled out of the mold and supported, guided and guided in the subsequent strand guide is further cooled.
  • some molds have electromagnetic stirring or braking devices.
  • the stirring or braking devices have electrical coils with which magnetic fields are generated which influence the flow conditions within the melt in the mold.
  • Stirring or braking devices are usually attached parallel to the broad sides of the mold on the outside of the mold longitudinal frame of the mold, for example by screwing.
  • the broad sides of a mold are usually formed by broad-side copper plates, which are subject to wear and therefore have to be replaced from time to time.
  • the invention has for its object to provide a mold for producing a casting strand from a metallic melt, which has electromagnetic stirring or braking devices and is improved in particular with regard to the exchange of its broad sides.
  • the mold should enable the rapid exchange of broad sides, even if the electromagnetic stirring or braking device cannot be accommodated within the longitudinal frame of the mold.
  • a mold according to the invention for producing a casting strand, preferably a slab of steel, from a metallic melt comprises two longitudinal mold frames with mutually facing inner sides of the frame and outer sides of the frame facing away from one another, two broad side inserts, each of which is on the inside of the frame on a longitudinal mold frame by screw connections which run from the outside of the frame through the longitudinal mold frame , are releasably attachable, and two electromagnetic stirring or braking devices, which are each arranged on the outside of the frame on a longitudinal mold frame.
  • Each electromagnetic stirring or braking device has an access opening to each screw connection facing it, through which a screwing tool for releasing and tightening the screw connection can be guided.
  • the invention enables removal and installation of the broad side inserts and thus, in particular, an exchange of the broad side inserts in the event of wear of the broad sides.
  • This removal and installation is made more difficult in the case of conventionally designed molds which have electromagnetic stirring or braking devices in that the stirring or braking devices block access to the screw connections since they are arranged on the outside of the longitudinal mold frames. Therefore, in the case of molds designed in this way, the stirring or braking devices must first be dismantled before the broadside inserts are removed in order to achieve the screw connections. Accordingly, the stirring or braking devices must be re-installed on the long mold frame after the installation of new broad side inserts.
  • the invention enables a simplified removal and installation of the broadside inserts by providing an access opening in the stirring or braking device for each screw connection facing a stirring or braking device, through which an screwing tool for releasing and tightening the screw connection can be guided.
  • screw connections can be loosened and tightened, and thus the broad side inserts can be exchanged without having to dismantle the stirring or braking devices and then have to reassemble them.
  • the invention thus considerably simplifies the maintenance of a mold, since manipulations on the stirring or braking devices when removing and installing the broadside inserts can be dispensed with.
  • electrical connections and cooling connections of the stirring or braking devices do not have to be disconnected.
  • the risk of damage to the stirring or braking devices when removing and installing the broadside inserts is significantly reduced.
  • each broadside insert has a broadside copper plate which forms a broadside of the mold.
  • each broad-side insert can have a support plate on which the broad-side copper plate is arranged, it being possible for the broad-side copper plate to be connected to the support plate of the broad-side insert in a detachable manner, for example by means of further screw connections.
  • copper has a high thermal conductivity and is therefore a particularly suitable material for the production of the broad sides of the mold.
  • the support plates can advantageously be used for fastening the broad side inserts to the mold longitudinal frame and for cooling the broad side copper plates.
  • the detachable arrangement of the broad side copper plates on a respective support plate also enables the support plates to be reused when the broad side copper plates are replaced.
  • a screwing tool according to the invention for a mold according to the invention comprises a wrench for loosening and tightening a screw of a screw connection and a screw locking device which prevents loss of the screw after it has been loosened.
  • the screw locking device is designed, for example, as a locking tube which can be inserted into an access opening to a screw connection and through which the wrench can be guided to the screw connection.
  • Such a screwing tool advantageously enables loosening and tightening of the screw connections without losing the screws of the screw connections. Without the screw securing device, the risk of losing the screws if the screws were loosened would be relatively great if the screws were contacted through the access openings in the stirring or braking devices.
  • FIGS. 1 and 2 show an embodiment of a mold 1 for producing a casting strand with a slab cross section from a metallic melt, specifically a steel melt.
  • Figure 1 shows a sectional view of the mold 1
  • Figure 2 shows a side view of the mold 1.
  • the melt is poured into the mold 1 through a mold inlet 10.
  • the partially solidified casting strand formed from the melt in the mold 1 emerges from the mold 1 below through a mold outlet 20.
  • a Cartesian coordinate system with coordinates X, Y, Z is shown in the figures.
  • the mold 1 comprises two mold longitudinal frames 3 with mutually facing frame inner sides 5 and frame outer sides 7 facing away from one another, two broad side inserts 9 and two electromagnetic stirring or braking devices 11.
  • Each broadside insert 9 is detachably fastened on the inside of the frame to a longitudinal mold frame 3 by a plurality of first screw connections 13, which run through the longitudinal mold frame 3 from the outside of the frame 7.
  • Each broadside insert 9 has a broadside copper plate 15, which forms a broadside of the mold 1, and a support plate 17, to which the broadside copper plate 15 is fastened with a plurality of second screw connections 19.
  • Each first screw connection 13 has a screw 21 which extends from the outside of the frame 7 Longitudinal mold frame 3 extends through the long mold frame 3 into a support plate 17 into which it is screwed, and the screw head 23 of which faces the frame outside 7 of a long mold frame 3.
  • Each electromagnetic stirring or braking device 11 is arranged on the outside of the frame on a longitudinal mold frame 3 and has an access opening 25 to each first screw connection 13 facing it.
  • a cavity 26 is located between an access opening 25 and the first screw connection 13 facing it.
  • a screwing tool 27 for loosening and tightening the screw 21 of the first screw connection 13 can be guided through the access opening 25.
  • the screwing tool 27 comprises a wrench 29 for loosening and tightening the screw 21 of a first screw connection 13 and a screw locking device 31 which prevents the screw 21 from being lost after it has been loosened.
  • the screw locking device 31 is designed as a locking tube which can be inserted into the access opening 25 to a first screw connection 13 and the cavity 26 behind it and through which the wrench 29 can be guided to the screw 21 of the first screw connection 13.
  • Each electromagnetic stirring or braking device 11 has electrical coils arranged in coil boxes 33 and a coil yoke 35 with which magnetic fields are generated which influence the flow conditions within a melt in the mold 1.
  • Figure 2 also shows cables 37, in which electrical supply lines for the coils are guided, and cooling lines 39, in which a coolant, for example cooling water, is passed for cooling the electromagnetic stirring or braking device 11.
  • a coolant for example cooling water

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  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Continuous Casting (AREA)
  • Molds, Cores, And Manufacturing Methods Thereof (AREA)

Abstract

Die Erfindung betrifft eine Kokille (1) zum Erzeugen eines Gießstrangs aus einer metallischen Schmelze. Die Kokille (1) umfasst zwei Kokillenlängsrahmen (3) mit einander zugewandten Rahmeninnenseiten (5) und voneinander abgewandten Rahmenaußenseiten (7), zwei Breitseiteneinsätze (9), die jeweils rahmeninnenseitig an einem Kokillenlängsrahmen (3) durch Schraubverbindungen (13), die von der Rahmenaußenseite (7) durch den Kokillenlängsrahmen (3) verlaufen, lösbar befestigbar sind, und zwei elektromagnetische Rühr- oder Bremsvorrichtungen (11), die jeweils rahmenaußenseitig an einem Kokillenlängsrahmen (3) angeordnet sind. Jede elektromagnetische Rühr- oder Bremsvorrichtung (11) weist zu jeder ihr zugewandten Schraubverbindung (13) eine Zugangsöffnung (25) auf, durch die ein Schraubwerkzeug (27) zum Lösen und Anziehen der Schraubverbindung (13) führbar ist.The invention relates to a mold (1) for producing a casting strand from a metallic melt. The mold (1) comprises two mold longitudinal frames (3) with mutually facing frame inner sides (5) and frame outer sides (7) facing away from one another, two broad side inserts (9), each of which is on the inside of the frame on a mold longitudinal frame (3) by screw connections (13) which are made by the The outside of the frame (7) runs through the longitudinal mold frame (3), can be detachably fastened, and two electromagnetic stirring or braking devices (11), which are each arranged on the outside of the frame on a longitudinal mold frame (3). Each electromagnetic stirring or braking device (11) has an access opening (25) for each screw connection (13) facing it, through which a screwing tool (27) for releasing and tightening the screw connection (13) can be guided.

Description

Die Erfindung betrifft eine Kokille zum Erzeugen eines Gießstrangs aus einer metallischen Schmelze.The invention relates to a mold for producing a casting strand from a metallic melt.

In Stranggießanlagen zum Erzeugen metallischer Stränge, insbesondere zum Erzeugen von Stahlsträngen, wird eine metallische Schmelze in einer Kokille vergossen, in der sich aus der Schmelze ein teilerstarrter Gießstrang ausbildet, der in weiterer Folge aus der Kokille ausgezogen und in der nachfolgenden Strangführung gestützt, geführt und weiter abgekühlt wird. Zur Verbesserung der Produktqualität der metallischen Stränge weisen manche Kokillen elektromagnetische Rühr- oder Bremsvorrichtungen auf. Die Rühr- oder Bremsvorrichtungen weisen elektrische Spulen auf, mit denen Magnetfelder erzeugt werden, die die Strömungsverhältnisse innerhalb der Schmelze in der Kokille beeinflussen. Rühr- oder Bremsvorrichtungen werden üblicherweise parallel zu den Breitseiten der Kokille außen an Kokillenlängsrahmen der Kokille, beispielsweise durch Verschraubung, befestigt. Die Breitseiten einer Kokille werden in der Regel von Breitseitenkupferplatten gebildet, die Verschleiß unterliegen und daher von Zeit zu Zeit ausgetauscht werden müssen.In continuous casting plants for producing metallic strands, in particular for producing steel strands, a metallic melt is poured into a mold, in which a partially solidified casting strand is formed from the melt, which is subsequently pulled out of the mold and supported, guided and guided in the subsequent strand guide is further cooled. To improve the product quality of the metallic strands, some molds have electromagnetic stirring or braking devices. The stirring or braking devices have electrical coils with which magnetic fields are generated which influence the flow conditions within the melt in the mold. Stirring or braking devices are usually attached parallel to the broad sides of the mold on the outside of the mold longitudinal frame of the mold, for example by screwing. The broad sides of a mold are usually formed by broad-side copper plates, which are subject to wear and therefore have to be replaced from time to time.

Aus der AT 346511 B und der AT 349163 B sind Kokillen mit zwei Kokillenlängsrahmen und jeweils rahmeninnenseitig an den Kokillenlängsrahmen angeordneten Breitseiteneinsätzen bekannt. Ein Breitseiteneinsatz ist jeweils mit dem Kokillenrahmen von der Rahmenaußenseite verschraubt. Innerhalb der Kokillenlängsrahmen ist jeweils eine elektromagnetische Rühreinrichtung angeordnet.From the AT 346511 B and the AT 349163 B Chill molds with two mold longitudinal frames and broad side inserts arranged on the inner side of the mold frame are known. A broad side insert is screwed to the mold frame from the outside of the frame. An electromagnetic stirring device is arranged within each of the longitudinal mold frames.

Aus den DE 3930265 A1 und WO 95/21036 sind ebenfalls Kokillen bekannt, bei denen die Breitseiteneinätze mit den Kokillenlängsrahmen verschraubt sind.From the DE 3930265 A1 and WO 95/21036 Chill molds are also known in which the broad side inserts are screwed to the longitudinal mold frames.

Wie die Konstruktion der Kokillen verändert werden kann, sodass Breitseiteneinsätze auch bei Kokillen mit großvolumigen elektromagnetischen Rührvorrichtungen, welche nicht innerhalb des Kokillenlängsrahmens untergebracht werden können, getauscht werden können, ohne hierfür die Rührvorrichtungen demontieren zu müssen, geht aus den Schriften nicht hervor.How the design of the molds can be changed so that broadside inserts can also be exchanged for molds with large-volume electromagnetic stirring devices, which cannot be accommodated within the longitudinal mold frame, without having to dismantle the stirring devices for this purpose.

Der Erfindung liegt die Aufgabe zugrunde, eine Kokille zum Erzeugen eines Gießstrangs aus einer metallischen Schmelze anzugeben, die elektromagnetische Rühr- oder Bremsvorrichtungen aufweist und insbesondere hinsichtlich des Austausches ihrer Breitseiten verbessert ist. Die Kokille soll den raschen Austausch von Breitseiten ermöglichen, selbst wenn die elektromagnetische Rühr- oder Bremsvorrichtung nicht innerhalb des Kokillenlängsrahmens untergebracht werden kann.The invention has for its object to provide a mold for producing a casting strand from a metallic melt, which has electromagnetic stirring or braking devices and is improved in particular with regard to the exchange of its broad sides. The mold should enable the rapid exchange of broad sides, even if the electromagnetic stirring or braking device cannot be accommodated within the longitudinal frame of the mold.

Die Aufgabe wird erfindungsgemäß durch eine Kokille mit den Merkmalen des Anspruchs 1 gelöst.The object is achieved by a mold with the features of claim 1.

Vorteilhafte Ausgestaltungen der Erfindung sind Gegenstand der abhängigen Ansprüche.Advantageous embodiments of the invention are the subject of the dependent claims.

Eine erfindungsgemäße Kokille zum Erzeugen eines Gießstrangs, vorzugsweise eines Brammenstrangs aus Stahl, aus einer metallischen Schmelze umfasst zwei Kokillenlängsrahmen mit einander zugewandten Rahmeninnenseiten und voneinander abgewandten Rahmenaußenseiten, zwei Breitseiteneinsätze, die jeweils rahmeninnenseitig an einem Kokillenlängsrahmen durch Schraubverbindungen, die von der Rahmenaußenseite durch den Kokillenlängsrahmen verlaufen, lösbar befestigbar sind, und zwei elektromagnetische Rühr- oder Bremsvorrichtungen, die jeweils rahmenaußenseitig an einem Kokillenlängsrahmen angeordnet sind. Jede elektromagnetische Rühr- oder Bremsvorrichtung weist eine Zugangsöffnung zu jeder ihr zugewandten Schraubverbindung auf, durch die ein Schraubwerkzeug zum Lösen und Anziehen der Schraubverbindung führbar ist.A mold according to the invention for producing a casting strand, preferably a slab of steel, from a metallic melt comprises two longitudinal mold frames with mutually facing inner sides of the frame and outer sides of the frame facing away from one another, two broad side inserts, each of which is on the inside of the frame on a longitudinal mold frame by screw connections which run from the outside of the frame through the longitudinal mold frame , are releasably attachable, and two electromagnetic stirring or braking devices, which are each arranged on the outside of the frame on a longitudinal mold frame. Each electromagnetic stirring or braking device has an access opening to each screw connection facing it, through which a screwing tool for releasing and tightening the screw connection can be guided.

Durch die lösbare Befestigung der Breitseiteneinsätze an den Kokillenlängsrahmen durch Schraubverbindungen ermöglicht die Erfindung einen Aus- und Einbau der Breitseiteneinsätze und damit insbesondere einen Austausch der Breitseiteneinsätze im Falle eines Verschleißes der Breitseiten. Dieser Aus- und Einbau wird bei herkömmlich ausgeführten Kokillen, die elektromagnetische Rühr- oder Bremsvorrichtungen aufweisen, dadurch erschwert, dass die Rühr- oder Bremsvorrichtungen den Zugang zu den Schraubverbindungen versperren, da sie außen an den Kokillenlängsrahmen angeordnet sind. Daher müssen bei derart ausgeführten Kokillen vor dem Ausbau der Breitseiteneinsätze die Rühr- oder Bremsvorrichtungen zunächst demontiert werden, um die Schraubverbindungen zu erreichen. Entsprechend müssen die Rühr- oder Bremsvorrichtungen nach dem Einbau neuer Breitseiteneinsätze wieder an den Kokillenlängsrahmen montiert werden. Diese Demontage und Montage der Rühr- oder Bremsvorrichtungen bei einem Austausch der Breitseiteneinsätze ist zeitaufwändig und erfordert außerdem eine sachgemäße Zwischenlagerung der demontierten Rühr- oder Bremsvorrichtungen. Die Erfindung ermöglicht einen vereinfachten Aus- und Einbau der Breitseiteneinsätze dadurch, dass sie für jede einer Rühr- oder Bremsvorrichtung zugewandte Schraubverbindung eine Zugangsöffnung in der Rühr- oder Bremsvorrichtung vorsieht, durch die ein Schraubwerkzeug zum Lösen und Anziehen der Schraubverbindung führbar ist. Dadurch können Schraubverbindungen gelöst und angezogen und somit die Breitseiteneinsätze ausgetauscht werden, ohne die Rühr- oder Bremsvorrichtungen demontieren und anschließend wieder montieren zu müssen. Die Erfindung vereinfacht somit die Wartung einer Kokille wesentlich, da Manipulationen an den Rühr- oder Bremsvorrichtungen beim Aus- und Einbau der Breitseiteneinsätze entfallen können. Insbesondere müssen elektrische Anschlüsse und Kühlanschlüsse der Rühr- oder Bremsvorrichtungen nicht gelöst werden. Außerdem wird die Gefahr einer Beschädigung der Rühr- oder Bremsvorrichtungen beim Aus- und Einbau der Breitseiteneinsätze deutlich reduziert.Due to the detachable fastening of the broad side inserts to the mold longitudinal frame by screw connections, the invention enables removal and installation of the broad side inserts and thus, in particular, an exchange of the broad side inserts in the event of wear of the broad sides. This removal and installation is made more difficult in the case of conventionally designed molds which have electromagnetic stirring or braking devices in that the stirring or braking devices block access to the screw connections since they are arranged on the outside of the longitudinal mold frames. Therefore, in the case of molds designed in this way, the stirring or braking devices must first be dismantled before the broadside inserts are removed in order to achieve the screw connections. Accordingly, the stirring or braking devices must be re-installed on the long mold frame after the installation of new broad side inserts. This disassembly and assembly of the stirring or braking devices when replacing the broadside inserts is time-consuming and also requires the intermediate storage of the dismantled stirring or braking devices. The invention enables a simplified removal and installation of the broadside inserts by providing an access opening in the stirring or braking device for each screw connection facing a stirring or braking device, through which an screwing tool for releasing and tightening the screw connection can be guided. As a result, screw connections can be loosened and tightened, and thus the broad side inserts can be exchanged without having to dismantle the stirring or braking devices and then have to reassemble them. The invention thus considerably simplifies the maintenance of a mold, since manipulations on the stirring or braking devices when removing and installing the broadside inserts can be dispensed with. In particular, electrical connections and cooling connections of the stirring or braking devices do not have to be disconnected. In addition, the risk of damage to the stirring or braking devices when removing and installing the broadside inserts is significantly reduced.

Bei einer Ausgestaltung der Erfindung weist jeder Breitseiteneinsatz eine Breitseitenkupferplatte auf, die eine Breitseite der Kokille bildet. Ferner kann jeder Breitseiteneinsatz eine Stützplatte aufweisen, an der die Breitseitenkupferplatte angeordnet ist, wobei die Breitseitenkupferplatte insbesondere lösbar, beispielsweise mittels weiteren Schraubverbindungen, mit der Stützplatte des Breitseiteneinsatzes verbunden sein kann. Diese Ausgestaltungen der Erfindung berücksichtigen, dass Kupfer eine hohe Wärmeleitfähigkeit aufweist und daher ein besonders geeignetes Material für die Fertigung der Breitseiten der Kokille ist. Die Stützplatten können vorteilhaft zur Befestigung der Breitseiteneinsätze an den Kokillenlängsrahmen sowie zur Kühlung der Breitseitenkupferplatten eingesetzt werden. Die lösbare Anordnung der Breitseitenkupferplatten an jeweils einer Stützplatte ermöglicht ferner eine Wiederverwendung der Stützplatten bei einem Austausch der Breitseitenkupferplatten.In one embodiment of the invention, each broadside insert has a broadside copper plate which forms a broadside of the mold. Furthermore, each broad-side insert can have a support plate on which the broad-side copper plate is arranged, it being possible for the broad-side copper plate to be connected to the support plate of the broad-side insert in a detachable manner, for example by means of further screw connections. These refinements of the invention take into account that copper has a high thermal conductivity and is therefore a particularly suitable material for the production of the broad sides of the mold. The support plates can advantageously be used for fastening the broad side inserts to the mold longitudinal frame and for cooling the broad side copper plates. The detachable arrangement of the broad side copper plates on a respective support plate also enables the support plates to be reused when the broad side copper plates are replaced.

Ein erfindungsgemäßes Schraubwerkzeug für eine erfindungsgemäße Kokille umfasst einen Schraubenschlüssel zum Lösen und Anziehen einer Schraube einer Schraubverbindung und eine Schraubensicherungsvorrichtung, die einen Verlust der Schraube nach deren Lösen verhindert. Die Schraubensicherungsvorrichtung ist beispielsweise als ein Sicherungsrohr ausgebildet, das in eine Zugangsöffnung zu einer Schraubverbindung einführbar ist und durch das der Schraubenschlüssel zu der Schraubverbindung führbar ist. Ein derartiges Schraubwerkzeug ermöglicht vorteilhaft das Lösen und Anziehen der Schraubverbindungen ohne einen Verlust der Schrauben der Schraubverbindungen. Ohne die Schraubensicherungsvorrichtung wäre die Gefahr eines Verlustes der Schrauben bei einem Lösen der Schrauben nämlich relativ groß, wenn die Schrauben durch die Zugangsöffnungen in den Rühr- oder Bremsvorrichtungen kontaktiert werden.A screwing tool according to the invention for a mold according to the invention comprises a wrench for loosening and tightening a screw of a screw connection and a screw locking device which prevents loss of the screw after it has been loosened. The screw locking device is designed, for example, as a locking tube which can be inserted into an access opening to a screw connection and through which the wrench can be guided to the screw connection. Such a screwing tool advantageously enables loosening and tightening of the screw connections without losing the screws of the screw connections. Without the screw securing device, the risk of losing the screws if the screws were loosened would be relatively great if the screws were contacted through the access openings in the stirring or braking devices.

Die oben beschriebenen Eigenschaften, Merkmale und Vorteile dieser Erfindung sowie die Art und Weise, wie diese erreicht werden, werden klarer und deutlicher verständlich im Zusammenhang mit der folgenden Beschreibung von Ausführungsbeispielen, die im Zusammenhang mit den Zeichnungen näher erläutert werden. Dabei zeigen:

  • FIG 1 eine Schnittdarstellung einer Kokille und eines Schraubwerkzeugs,
  • FIG 2 eine Seitenansicht der in Figur 1 gezeigten Kokille.
The above-described characteristics, features and advantages of this invention, as well as the manner in which they are achieved, will be more clearly understood in the Connection with the following description of exemplary embodiments, which are explained in connection with the drawings. Show:
  • FIG. 1 2 shows a sectional illustration of a mold and a screwing tool,
  • FIG 2 a side view of the in Figure 1 shown mold.

Einander entsprechende Teile sind in den Figuren mit denselben Bezugszeichen versehen.Corresponding parts are provided with the same reference symbols in the figures.

Die Figuren 1 und 2 zeigen ein Ausführungsbeispiel einer Kokille 1 zum Erzeugen eines Gießstrangs mit Brammenquerschnitt aus einer metallischen Schmelze, konkret einer Stahlschmelze. Figur 1 zeigt eine Schnittdarstellung der Kokille 1, Figur 2 zeigt eine Seitenansicht der Kokille 1. Die Schmelze wird oben durch einen Kokilleneinlass 10 in die Kokille 1 gegossen. Der sich aus der Schmelze in der Kokille 1 bildende teilerstarrte Gießstrang tritt unten durch einen Kokillenauslass 20 aus der Kokille 1 aus. Zum besseren Verständnis ist in den Figuren jeweils ein kartesisches Koordinatensystem mit Koordinaten X, Y, Z eingezeichnet.The Figures 1 and 2 show an embodiment of a mold 1 for producing a casting strand with a slab cross section from a metallic melt, specifically a steel melt. Figure 1 shows a sectional view of the mold 1, Figure 2 shows a side view of the mold 1. The melt is poured into the mold 1 through a mold inlet 10. The partially solidified casting strand formed from the melt in the mold 1 emerges from the mold 1 below through a mold outlet 20. For better understanding, a Cartesian coordinate system with coordinates X, Y, Z is shown in the figures.

Die Kokille 1 umfasst zwei Kokillenlängsrahmen 3 mit einander zugewandten Rahmeninnenseiten 5 und voneinander abgewandten Rahmenaußenseiten 7, zwei Breitseiteneinsätze 9 und zwei elektromagnetische Rühr- oder Bremsvorrichtungen 11.The mold 1 comprises two mold longitudinal frames 3 with mutually facing frame inner sides 5 and frame outer sides 7 facing away from one another, two broad side inserts 9 and two electromagnetic stirring or braking devices 11.

Jeder Breitseiteneinsatz 9 ist rahmeninnenseitig an einem Kokillenlängsrahmen 3 durch mehrere erste Schraubverbindungen 13, die von der Rahmenaußenseite 7 durch den Kokillenlängsrahmen 3 verlaufen, lösbar befestigt. Jeder Breitseiteneinsatz 9 weist eine Breitseitenkupferplatte 15, die eine Breitseite der Kokille 1 bildet, und eine Stützplatte 17, an der die Breitseitenkupferplatte 15 mit mehreren zweiten Schraubverbindungen 19 befestigt ist, auf. Jede erste Schraubverbindung 13 weist eine Schraube 21 auf, die sich von der Rahmenaußenseite 7 eines Kokillenlängsrahmens 3 durch den Kokillenlängsrahmen 3 in eine Stützplatte 17 erstreckt, in die sie geschraubt ist, und deren Schraubenkopf 23 der Rahmenaußenseite 7 eines Kokillenlängsrahmens 3 zugewandt ist.Each broadside insert 9 is detachably fastened on the inside of the frame to a longitudinal mold frame 3 by a plurality of first screw connections 13, which run through the longitudinal mold frame 3 from the outside of the frame 7. Each broadside insert 9 has a broadside copper plate 15, which forms a broadside of the mold 1, and a support plate 17, to which the broadside copper plate 15 is fastened with a plurality of second screw connections 19. Each first screw connection 13 has a screw 21 which extends from the outside of the frame 7 Longitudinal mold frame 3 extends through the long mold frame 3 into a support plate 17 into which it is screwed, and the screw head 23 of which faces the frame outside 7 of a long mold frame 3.

Jede elektromagnetische Rühr- oder Bremsvorrichtung 11 ist rahmenaußenseitig an einem Kokillenlängsrahmen 3 angeordnet und weist eine Zugangsöffnung 25 zu jeder ihr zugewandten ersten Schraubverbindung 13 auf. Zwischen einer Zugangsöffnung 25 und der ihr zugewandten ersten Schraubverbindung 13 befindet sich in dem dargestellten Ausführungsbeispiel ein Hohlraum 26. Durch die Zugangsöffnung 25 ist ein Schraubwerkzeug 27 zum Lösen und Anziehen der Schraube 21 der ersten Schraubverbindung 13 führbar.Each electromagnetic stirring or braking device 11 is arranged on the outside of the frame on a longitudinal mold frame 3 and has an access opening 25 to each first screw connection 13 facing it. In the exemplary embodiment shown, a cavity 26 is located between an access opening 25 and the first screw connection 13 facing it. A screwing tool 27 for loosening and tightening the screw 21 of the first screw connection 13 can be guided through the access opening 25.

Das Schraubwerkzeug 27 umfasst einen Schraubenschlüssel 29 zum Lösen und Anziehen der Schraube 21 einer ersten Schraubverbindung 13 und eine Schraubensicherungsvorrichtung 31, die einen Verlust der Schraube 21 nach deren Lösen verhindert. Die Schraubensicherungsvorrichtung 31 ist als ein Sicherungsrohr ausgebildet, das in die Zugangsöffnung 25 zu einer ersten Schraubverbindung 13 und den dahinter liegenden Hohlraum 26 einführbar ist und durch das der Schraubenschlüssel 29 zu der Schraube 21 der ersten Schraubverbindung 13 führbar ist.The screwing tool 27 comprises a wrench 29 for loosening and tightening the screw 21 of a first screw connection 13 and a screw locking device 31 which prevents the screw 21 from being lost after it has been loosened. The screw locking device 31 is designed as a locking tube which can be inserted into the access opening 25 to a first screw connection 13 and the cavity 26 behind it and through which the wrench 29 can be guided to the screw 21 of the first screw connection 13.

Jede elektromagnetische Rühr- oder Bremsvorrichtung 11 weist in Spulenkästen 33 angeordnete elektrische Spulen und ein Spulenjoch 35 auf, mit denen Magnetfelder erzeugt werden, die die Strömungsverhältnisse innerhalb einer Schmelze in der Kokille 1 beeinflussen. Figur 2 zeigt ferner Kabel 37, in denen elektrische Versorgungsleitungen für die Spulen geführt sind, und Kühlleitungen 39, in denen ein Kühlmittel, beispielsweise Kühlwasser, zur Kühlung der elektromagnetischen Rühr- oder Bremsvorrichtung 11 geleitet wird.Each electromagnetic stirring or braking device 11 has electrical coils arranged in coil boxes 33 and a coil yoke 35 with which magnetic fields are generated which influence the flow conditions within a melt in the mold 1. Figure 2 also shows cables 37, in which electrical supply lines for the coils are guided, and cooling lines 39, in which a coolant, for example cooling water, is passed for cooling the electromagnetic stirring or braking device 11.

Obwohl die Erfindung im Detail durch bevorzugte Ausführungsbeispiele näher illustriert und beschrieben wurde, so ist die Erfindung nicht durch die offenbarten Beispiele eingeschränkt und andere Variationen können vom Fachmann hieraus abgeleitet werden, ohne den Schutzumfang der Erfindung zu verlassen.Although the invention has been illustrated and described in detail by means of preferred exemplary embodiments, the invention is thus not restricted by the examples disclosed and other variations can be derived therefrom by a person skilled in the art without departing from the scope of protection of the invention.

BezugszeichenlisteLIST OF REFERENCE NUMBERS

11
Kokillemold
33
KokillenlängsrahmenKokillenlängsrahmen
55
RahmeninnenseiteFrame inside
77
RahmenaußenseiteFrame outside
99
BreitseiteneinsatzBroadside use
1010
KokilleneinlassKokilleneinlass
1111
Rühr- oder BremsvorrichtungStirring or braking device
1313
erste Schraubverbindungfirst screw connection
1515
BreitseitenkupferplatteWide side copper plate
1717
Stützplattesupport plate
1919
zweite Schraubverbindungsecond screw connection
2020
KokillenauslassKokillenauslass
2121
Schraubescrew
2323
Schraubenkopfscrew head
2525
Zugangsöffnungaccess opening
2626
Hohlraumcavity
2727
SchraubwerkzeugWrench
2929
Schraubenschlüsselwrench
3131
SchraubensicherungsvorrichtungScrew locking device
3333
Spulenkastencoil box
3535
Spulenjochcoil yoke
3737
Kabelelectric wire
3939
Kühlleitungcooling line
X, Y, ZX, Y, Z
kartesische KoordinateCartesian coordinate

Claims (6)

Kokille (1) zum Erzeugen eines Gießstrangs aus einer metallischen Schmelze, die Kokille (1) umfassend - zwei Kokillenlängsrahmen (3) mit einander zugewandten Rahmeninnenseiten (5) und voneinander abgewandten Rahmenaußenseiten (7), - zwei Breitseiteneinsätze (9), die jeweils rahmeninnenseitig an einem Kokillenlängsrahmen (3) durch Schraubverbindungen (13), die von der Rahmenaußenseite (7) durch den Kokillenlängsrahmen (3) verlaufen, lösbar befestigbar sind, und - zwei elektromagnetische Rühr- oder Bremsvorrichtungen (11), dadurch gekennzeichnet, - dass die elektromagnetischen Rühr- oder Bremsvorrichtungen (11) jeweils rahmenaußenseitig an einem Kokillenlängsrahmen (3) angeordnet sind, und - jede elektromagnetische Rühr- oder Bremsvorrichtung (11) zu jeder ihr zugewandten Schraubverbindung (13) eine Zugangsöffnung (25) aufweist, durch die ein Schraubwerkzeug (27) zum Lösen und Anziehen der Schraubverbindung (13) führbar ist. Mold (1) for producing a casting strand from a metallic melt, comprising the mold (1) two longitudinal mold frames (3) with mutually facing inner sides of the frame (5) and outer sides (7) of the frame facing away from one another, - Two broadside inserts (9), each of which is detachably attachable to the inside of a mold longitudinal frame (3) by screw connections (13) which run from the outside of the frame (7) through the mold longitudinal frame (3), and - Two electromagnetic stirring or braking devices (11), characterized in that - That the electromagnetic stirring or braking devices (11) are each arranged on the outside of the frame on a mold longitudinal frame (3), and - Each electromagnetic stirring or braking device (11) for each screw connection (13) facing it has an access opening (25) through which a screwing tool (27) for releasing and tightening the screw connection (13) can be guided. Kokille (1) nach Anspruch 1, wobei jeder Breitseiteneinsatz (9) eine Breitseitenkupferplatte (15) aufweist, die eine Breitseite der Kokille (1) bildet.Mold (1) according to claim 1, wherein each broad side insert (9) has a broad side copper plate (15) which forms a broad side of the mold (1). Kokille (1) nach Anspruch 2, wobei jeder Breitseiteneinsatz (15) eine Stützplatte (17) aufweist, an der die Breitseitenkupferplatte (15) angeordnet ist.Chill mold (1) according to claim 2, wherein each broad side insert (15) has a support plate (17) on which the broad side copper plate (15) is arranged. Kokille (1) nach Anspruch 3, wobei die Breitseitenkupferplatte (15) jedes Breitseiteneinsatzes (9) lösbar mit der Stützplatte (17) des Breitseiteneinsatzes (9) verbunden ist.Mold (1) according to claim 3, wherein the broadside copper plate (15) of each broadside insert (9) is detachably connected to the support plate (17) of the broadside insert (9). Schraubwerkzeug (27) mit einer gemäß einem der vorhergehenden Ansprüche ausgebildeten Kokille (1), das Schraubwerkzeug (27) umfassend - einen Schraubenschlüssel (29) zum Lösen und Anziehen einer Schraube (21) einer Schraubverbindung (13) und - eine Schraubensicherungsvorrichtung (31), die einen Verlust der Schraube (21) nach deren Lösen verhindert. Screwing tool (27) with a mold (1) designed according to one of the preceding claims, comprising the screwing tool (27) - A wrench (29) for loosening and tightening a screw (21) of a screw connection (13) and - A screw locking device (31), which prevents loss of the screw (21) after loosening. Schraubwerkzeug (27) nach Anspruch 5, wobei die Schraubensicherungsvorrichtung (31) als ein Sicherungsrohr ausgebildet ist, das in eine Zugangsöffnung (25) zu einer Schraubverbindung (13) einführbar ist und durch das der Schraubenschlüssel (29) zu der Schraube (21) der Schraubverbindung (13) führbar ist.Screwing tool (27) according to claim 5, wherein the screw locking device (31) is designed as a locking tube which can be inserted into an access opening (25) to a screw connection (13) and through which the wrench (29) to the screw (21) Screw connection (13) is feasible.
EP19182524.9A 2018-07-18 2019-06-26 Mould for producing a casting strand Active EP3597327B1 (en)

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Application Number Priority Date Filing Date Title
ATA50626/2018A AT521535B1 (en) 2018-07-18 2018-07-18 Mold for producing a cast strand

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EP3597327B1 EP3597327B1 (en) 2021-01-13

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Citations (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
AT346511B (en) 1975-05-16 1978-11-10 Siderurgie Fse Inst Rech THROUGH FILLER
AT349163B (en) 1975-09-17 1979-03-26 Siderurgie Fse Inst Rech COCILLE INTENDED FOR CONTINUOUS WATERING OF WIDE RUNS
US4200141A (en) * 1977-06-07 1980-04-29 Cem Compagnie Electro-Mecanique Electromagnetic inductor ingot mold for continuous casting
JPS61129263A (en) * 1984-11-29 1986-06-17 Kawasaki Steel Corp Continuous casting machine with electromagnetic stirring
DE3930265A1 (en) 1989-09-11 1991-03-14 Schloemann Siemag Ag CONTINUOUS CHOCOLATE
WO1995021036A1 (en) 1994-02-02 1995-08-10 Sms Concast Inc. Mold for continuous casting and method of making the mold
US6253832B1 (en) * 1996-02-13 2001-07-03 Asea Brown Boveri Ab Device for casting in a mould

Patent Citations (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
AT346511B (en) 1975-05-16 1978-11-10 Siderurgie Fse Inst Rech THROUGH FILLER
AT349163B (en) 1975-09-17 1979-03-26 Siderurgie Fse Inst Rech COCILLE INTENDED FOR CONTINUOUS WATERING OF WIDE RUNS
US4200141A (en) * 1977-06-07 1980-04-29 Cem Compagnie Electro-Mecanique Electromagnetic inductor ingot mold for continuous casting
JPS61129263A (en) * 1984-11-29 1986-06-17 Kawasaki Steel Corp Continuous casting machine with electromagnetic stirring
DE3930265A1 (en) 1989-09-11 1991-03-14 Schloemann Siemag Ag CONTINUOUS CHOCOLATE
WO1995021036A1 (en) 1994-02-02 1995-08-10 Sms Concast Inc. Mold for continuous casting and method of making the mold
US6253832B1 (en) * 1996-02-13 2001-07-03 Asea Brown Boveri Ab Device for casting in a mould

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AT521535B1 (en) 2021-10-15
EP3597327B1 (en) 2021-01-13

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