EP2448700B1 - Casting pipe changing device at the spout of a metallurgical vessel - Google Patents

Casting pipe changing device at the spout of a metallurgical vessel Download PDF

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Publication number
EP2448700B1
EP2448700B1 EP10730085.7A EP10730085A EP2448700B1 EP 2448700 B1 EP2448700 B1 EP 2448700B1 EP 10730085 A EP10730085 A EP 10730085A EP 2448700 B1 EP2448700 B1 EP 2448700B1
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EP
European Patent Office
Prior art keywords
casting tube
changing device
casting
pressing
curved
Prior art date
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EP10730085.7A
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German (de)
French (fr)
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EP2448700B8 (en
EP2448700A1 (en
Inventor
Jean-Daniel Cousin
Werner Keller
Benno Steiner
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Refractory Intellectual Property GmbH and Co KG
Stopinc AG
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Refractory Intellectual Property GmbH and Co KG
Stopinc AG
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Application filed by Refractory Intellectual Property GmbH and Co KG, Stopinc AG filed Critical Refractory Intellectual Property GmbH and Co KG
Priority to PL10730085T priority Critical patent/PL2448700T3/en
Priority to EP10730085.7A priority patent/EP2448700B8/en
Publication of EP2448700A1 publication Critical patent/EP2448700A1/en
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Publication of EP2448700B1 publication Critical patent/EP2448700B1/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
    • B22D41/00—Casting melt-holding vessels, e.g. ladles, tundishes, cups or the like
    • B22D41/50—Pouring-nozzles
    • B22D41/56—Means for supporting, manipulating or changing a pouring-nozzle

Definitions

  • the invention relates to a casting tube changing device for fixing a replaceable, for exchanging transversely to the casting direction adjustable pouring tube in a casting position at the spout of a metallurgical container, according to the preamble of claim 1.
  • the publication EP-B-1 590 114 discloses a casting tube comprising a lower tubular part coaxial with the casting opening axis and an upper plate. On the underside of the plate flat guide surfaces are arranged on both sides of the tubular member, which are directed obliquely downwards in the casting direction and form a downwardly tapering plate cross-section.
  • the replaceable casting tube is fixed in a casting position by means of a casting tube changing device acting on the guide surfaces, which comprises at least one spring-loaded pressure element which can be pressed against one guide surface of the casting tube.
  • a changing device for a dip tube comprises on both sides of the spout opening arranged spring-loaded rocker arm, which press a respective dip tube to an upper refractory sleeve.
  • the rocker arms each have a guide surface for the dip tubes, which are aligned approximately horizontally and cause a force upward in the axial direction of the spout opening of the dip tube.
  • the present invention has for its object to provide a Giessrohr pleavortechnisch of the aforementioned type, which allows in conjunction with particularly advantageous trained guide surfaces of the Giessrohres optimal pressure force transmission.
  • the respective pressing element is pressed with a curved in the adjustment direction of the pouring tube stepwise or convex or similar head to a curved in its longitudinal direction or in the adjustment direction guide surface of the pouring tube, whereby the pressure forces exerted by the Anpressbolzen optimally, more against the G manrohrö réelle out and thus more evenly acting, transferred.
  • the risk that in particular at the transition from the plate to the tubular part in refractory material cracks occur significantly reduced.
  • better centering of the pouring tube is achieved in Giessposition.
  • Fig.1 to 3 an interchangeable pouring tube 1 is shown, which by means of a Giessrohr pleavortechnisch in a casting position at the spout of a metallurgical container is fixable.
  • the container itself is not shown in the drawing, and of the Giessrohr grillvortechnik only three Anpressbolzen 2 can be seen.
  • the spring-loaded pressure pins 2 act on the pouring tube 1 and press it in a casting position either directly to a refractory sleeve of the container or to a closure plate of a sliding closure attached to the container.
  • the casting tube 1 has a pouring opening 3 and comprises a coaxial to Giessö Maschinensachse a, lower tubular part 4 and an upper plate 5.
  • the plate 5 has on its underside two on both sides of the tubular part 4 arranged guide surfaces 10 which are inclined in the casting direction directed downwards and form a downwardly tapering plate cross-section.
  • the angle ⁇ , the guide surfaces 10 include the Giessö Maschinensachse a, 20 ° to 80 °, preferably 45 °, as shown, amount.
  • the pouring tube 1 for the purpose of replacing transversely to the casting direction, in the direction A to Fig. 3 , Adjusted and a new pouring tube 1 are brought back into the casting position.
  • the two guide surfaces 10 of the plate 5 are curved in their longitudinal direction or in the adjustment direction A of the pouring tube 1, this stepwise or convex or bent in a similar manner, such as oval, a polygon, approximately circular, etc.
  • they are convexly curved with respect to a center plane of the plate 5 which extends in the direction of the casting opening axis a, the radius of curvature R1 (FIG. Fig. 3 ) is greater than the maximum distance of the respective guide surface 10 of the casting opening axis a comprehensive center plane of the plate fifth
  • the contact pins 2 are each resiliently pressed against the guide surfaces 10 with a head 2a, which is convexly curved in the adjustment direction A of the casting tube 1 and has a radius of curvature R3 (FIG. Fig. 3 ) having.
  • the pressure pins 2 are in line contact with the guide surfaces 10.
  • the pressure forces exerted on the plate 5 by the pressure bolts 2 arranged parallel to one another do not run parallel, but are distributed more in the center and thus more evenly distributed.
  • the risk that in particular at the transition from the plate 5 to the tubular part 4 in the refractory material cracks substantially reduced (both the tubular part 4 and the plate 5 are made of a refractory material that at least in the plate area of a metal jacket. 9 is surrounded).
  • three contact pins 2 each act on the respective guide surface 10.
  • the number of contact pins 2 could be chosen differently.
  • the head height and / or the spring stroke of each juxtaposed contact pin 2 of the curvature of the respective Guide surface 10 adapted and thus optimizes the clamping force.
  • Fig. 1 to 3 illustrated embodiment of the pouring tube 1 extend in its longitudinal direction or in the adjustment direction A of the pouring tube 1 curved, obliquely downwardly directed guide surfaces 10 seen in vertical section straight, which is particularly in Fig. 2 is apparent.
  • Fig. 4 shows a casting tube 1 'with a plate 5', the guide surfaces 10 'in turn in their longitudinal direction or in the adjustment A of the pouring tube 1 have a radius of curvature R4, but in addition are also convex in vertical cross-section, ie a curvature to the outside with a Have radius R2.
  • the radius of curvature R4 of the guide surfaces 10 'in the adjustment direction A is eccentric with respect to the Giessö Stammsachse a, similar to the embodiment according to Fig. 1 to 3 ,
  • Fig. 5 illustrated variant of a pouring tube 1 "are curved in their longitudinal direction or in the adjustment direction A of the pouring spout 1 guide surfaces 10" also curved in the vertical cross-section to the outside with a radius R5.
  • R5 the radius of curvature of the guide surfaces 10 "in the adjustment direction A is concerned.
  • this is a so-called oblique circle variant in which the curvature having the radius R5 is additionally embodied in an oblique position, for example, of 45 ° to the pouring opening axis a.
  • Fig. 6 and Fig. 7 show a variant of a Giessohres 61, which is the same in itself as that after Fig. 1 to Fig. 3 and therefore now the differences are explained below.
  • This casting tube 61 is likewise provided with these guide surfaces 60 according to the invention, which are directed obliquely downward in the casting direction and form a plate cross-section tapering downwards.
  • the main difference compared to the guide surfaces 10 after Fig. 1 is that their radius of curvature R6 each in a horizontal orientation. ie formed perpendicular to the axis a. This radius of curvature R6 is again greater by a multiple than the radius of the tubular part 64 of the pouring tube 61.
  • Fig. 8 is an embodiment of an inventive pressing device 50 with perpendicular or radially to the guide surface 10 arranged Anpressbolzen 2 'illustrated. There are the four pressure pins 2 'and acting on this, coaxial with the Anpressbolzen 2' disposed spring 51 housed in a housing 52, from which of course the convexly curved in the adjustment direction A heads 2a 'protrude at least partially.
  • the pressing device 70 has a simple, compact design.
  • Fig. 9 shows a further embodiment of a novel casting tube changing device 70, in which the respective contact element is not designed as a Anpressbolzen, but as a rocker arm 72, one arm 73 provided with the in the adjustment direction A of the spout convex head 72a and another arm 74 of a spring 71 is loaded. While the contact pressure of the head, in turn, for example, at an angle of 45 ° to the vertical Giessrohrachse, the respective spring 71 is arranged horizontally. This construction is more complicated than the one after Fig. 8 and takes up more space, but here the heat on the springs 71 is smaller.
  • the formed radius of curvature of the respective guide surface extends either perpendicularly or at an angle (eg 45 °) to the axis a of the pouring tube.
  • this angle could also be approximately 0 °, ie the radius of curvature would then be aligned parallel to the axis a. Depending on how chosen this angle is, this affects the shape of the guide surface in their longitudinal training.
  • the pressure bolts could also be arranged perpendicular to the curved guide surfaces or to the sections forming the curvature.
  • the pressure bolts could also be in surface contact with the guide surfaces, at least in the casting position, instead of in line contact.

Landscapes

  • Mechanical Engineering (AREA)
  • Engineering & Computer Science (AREA)
  • Casting Support Devices, Ladles, And Melt Control Thereby (AREA)
  • Continuous Casting (AREA)
  • Closures For Containers (AREA)
  • Clamps And Clips (AREA)
  • Molds, Cores, And Manufacturing Methods Thereof (AREA)
  • Laying Of Electric Cables Or Lines Outside (AREA)
  • Filling Or Discharging Of Gas Storage Vessels (AREA)
  • Medicinal Preparation (AREA)
  • Investigating Strength Of Materials By Application Of Mechanical Stress (AREA)
  • Details Of Rigid Or Semi-Rigid Containers (AREA)
  • Nozzles (AREA)

Description

Die Erfindung betrifft eine Giessrohrwechselvorrichtung zur Fixierung eines auswechselbaren, zwecks Auswechselns quer zur Giessrichtung verstellbaren Giessrohres in einer Giessstellung am Ausguss eines metallurgischen Behälters, gemäss dem Oberbegriff des Anspruches 1.The invention relates to a casting tube changing device for fixing a replaceable, for exchanging transversely to the casting direction adjustable pouring tube in a casting position at the spout of a metallurgical container, according to the preamble of claim 1.

Die Druckschrift EP-B-1 590 114 offenbart ein Giessrohr, das einen zur Giessöffnungsachse koaxialen, unteren rohrförmigen Teil sowie eine obere Platte umfasst. Auf der Unterseite der Platte sind zu beiden Seiten des rohrförmigen Teils ebene Führungsflächen angeordnet, die in Giessrichtung schräg nach unten gerichtet sind und einen sich nach unten verjüngenden Plattenquerschnitt bilden. Das auswechselbare Giessrohr wird mittels einer auf die Führungsflächen einwirkenden Giessrohrwechselvorrichtung in einer Giessstellung fixiert, die mindestens je ein federbelastetes, an je eine Führungsfläche des Giessrohres andrückbares Anpresselement umfasst.The publication EP-B-1 590 114 discloses a casting tube comprising a lower tubular part coaxial with the casting opening axis and an upper plate. On the underside of the plate flat guide surfaces are arranged on both sides of the tubular member, which are directed obliquely downwards in the casting direction and form a downwardly tapering plate cross-section. The replaceable casting tube is fixed in a casting position by means of a casting tube changing device acting on the guide surfaces, which comprises at least one spring-loaded pressure element which can be pressed against one guide surface of the casting tube.

Eine Wechselvorrichtung für ein Tauchrohr gemäss der Druckschrift US-A-2003/0029892 umfasst beidseitig zur Ausgussöffnung angeordnete federbelastete Kipphebel, die ein jeweiliges Tauchrohr an eine obere feuerfeste Hülse andrücken. Die Kipphebel weisen dabei jeweils eine Führungsfläche für die Tauchrohre auf, die annähernd horizontal ausgerichtet sind und eine Kraft nach oben in Achsrichtung der Ausgussöffnung des Tauchrohres bewirken. Damit besteht eine Gefahr, dass das eingespannte Tauchrohr nur bei diesen Bereichen mit einer Druckspannung versehen ist, die mit den Kipphebeln in Berührung stehen.A changing device for a dip tube according to the document US-A-2003/0029892 comprises on both sides of the spout opening arranged spring-loaded rocker arm, which press a respective dip tube to an upper refractory sleeve. The rocker arms each have a guide surface for the dip tubes, which are aligned approximately horizontally and cause a force upward in the axial direction of the spout opening of the dip tube. Thus, there is a risk that the clamped dip tube is provided only at these areas with a compressive stress, which are in contact with the rocker arms.

Der vorliegenden Erfindung liegt die Aufgabe zugrunde, eine Giessrohrwechselvorrichtung der eingangs genannten Art zu schaffen, die in Zusammenwirkung mit besonders vorteilhaft ausgebildeten Führungsflächen des Giessrohres eine optimale Druckkraftübertragung ermöglicht.The present invention has for its object to provide a Giessrohrwechselvorrichtung of the aforementioned type, which allows in conjunction with particularly advantageous trained guide surfaces of the Giessrohres optimal pressure force transmission.

Diese Aufgabe wird erfindungsgemäss durch eine Giessrohrwechselvorrichtung mit den Merkmalen des Anspruches 1 gelöst.This object is achieved according to the invention by a Giessrohrwechselvorrichtung with the features of claim 1.

Weitere bevorzugte Ausgestaltungen der erfindungsgemässen Giessrohrwechselvorrichtung bilden den Gegenstand der abhängigen Ansprüche.Further preferred embodiments of the inventive pouring tube changing device form the subject of the dependent claims.

Bei der erfindungsgemässen Giessrohrwechselvorrichtung wird das jeweilige Anpresselement mit einem in der Verstellrichtung des Giessrohres stufenweise oder konvex oder ähnlich gekrümmten Kopf an eine in ihrer Längsrichtung bzw. in der Verstellrichtung gekrümmte Führungsfläche des Giessrohres angedrückt, wodurch die von den Anpressbolzen ausgeübten Druckkräfte optimal, mehr gegen die Giessrohröffnung hin und somit gleichmässiger einwirkend, übertragen werden. Dadurch wird die Gefahr, dass insbesondere am Übergang von der Platte zum rohrförmigen Teil im feuerfesten Material Risse entstehen, wesentlich vermindert. Zudem wird bessere Zentrierung des Giessrohres in Giessposition erreicht.In the casting tube changing device according to the invention, the respective pressing element is pressed with a curved in the adjustment direction of the pouring tube stepwise or convex or similar head to a curved in its longitudinal direction or in the adjustment direction guide surface of the pouring tube, whereby the pressure forces exerted by the Anpressbolzen optimally, more against the Gießrohröffnung out and thus more evenly acting, transferred. As a result, the risk that in particular at the transition from the plate to the tubular part in refractory material cracks occur, significantly reduced. In addition, better centering of the pouring tube is achieved in Giessposition.

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

Fig. 1
ein erstes Ausführungsbeispiel eines Giessrohres in Seitenansicht, mit drei Anpressbolzen einer erfindungsgemässen Andruckvorrichtung;
Fig. 2
einen Schnitt nach Linie II-II in Fig. 1;
Fig. 3
im vergrösserten Massstab einen Schnitt nach Linie III-III in Fig.2;
Fig. 4
ein zweites Ausführungsbeispiel eines Giessrohres in einer der Fig. 2 entsprechenden Darstellung;
Fig. 5
ein drittes Ausführungsbeispiel eines Giessrohres in einer der Fig. 2 entsprechenden Darstellung;
Fig. 6
ein weiteres Ausführungsbeispiel eines Giessrohres in perspektivischer Darstellung;
Fig. 7
einen Längsschnitt durch das Giessrohr nach Fig. 6;
Fig. 8
ein Ausführungsbeispiel einer erfindungsgemässen Andruckvorrichtung, mit einer von Fig. 1 bis 3 abweichenden Anzahl und Anordnung der Anpressbolzen; und
Fig. 9
eine weitere Ausführungsform einer erfindungsgemässen Andruckvorrichtung.
The invention will be explained in more detail with reference to the drawings. Show it:
Fig. 1
a first embodiment of a casting tube in side view, with three contact pins of a novel pressure device;
Fig. 2
a section along line II-II in Fig. 1 ;
Fig. 3
on an enlarged scale a section along line III-III in Fig.2 ;
Fig. 4
A second embodiment of a casting tube in one of Fig. 2 corresponding representation;
Fig. 5
a third embodiment of a casting tube in one of Fig. 2 corresponding representation;
Fig. 6
a further embodiment of a pouring tube in a perspective view;
Fig. 7
a longitudinal section through the spout after Fig. 6 ;
Fig. 8
an embodiment of an inventive pressure device, with one of Fig. 1 to 3 deviating number and arrangement of the pressure bolts; and
Fig. 9
a further embodiment of a pressure device according to the invention.

In Fig.1 bis 3 ist ein auswechselbares Giessrohr 1 dargestellt, das mittels einer Giessrohrwechselvorrichtung in einer Giessposition am Ausguss eines metallurgischen Behälters fixierbar ist. Der Behälter selber ist in der Zeichnung nicht dargestellt, und von der Giessrohrwechselvorrichtung sind lediglich drei Anpressbolzen 2 ersichtlich. Die federbelasteten Anpressbolzen 2 wirken auf das Giessrohr 1 ein und drücken es in einer Giessstellung entweder direkt an eine feuerfeste Hülse des Behälters oder an eine Verschlussplatte eines am Behälter angebrachten Schiebeverschlusses an.In Fig.1 to 3 an interchangeable pouring tube 1 is shown, which by means of a Giessrohrwechselvorrichtung in a casting position at the spout of a metallurgical container is fixable. The container itself is not shown in the drawing, and of the Giessrohrwechselvorrichtung only three Anpressbolzen 2 can be seen. The spring-loaded pressure pins 2 act on the pouring tube 1 and press it in a casting position either directly to a refractory sleeve of the container or to a closure plate of a sliding closure attached to the container.

Das Giessrohr 1 weist eine Giessöffnung 3 auf und umfasst einen zur Giessöffnungsachse a koaxialen, unteren rohrförmigen Teil 4 sowie eine obere Platte 5. Die Platte 5 weist auf ihrer Unterseite zwei zu beiden Seiten des rohrförmigen Teils 4 angeordnete Führungsflächen 10 auf, die in Giessrichtung schräg nach unten gerichtet sind und einen sich nach unten verjüngenden Plattenquerschnitt bilden. Der Winkel α, den die Führungsflächen 10 mit der Giessöffnungsachse a einschliessen, kann 20° bis 80°, vorzugsweise 45° wie dargestellt, betragen. Über die Führungsflächen 10 kann das Giessrohr 1 zwecks Auswechselns quer zur Giessrichtung, in Richtung A nach Fig. 3, verstellt und ein neues Giessrohr 1 wieder in die Giessstellung gebracht werden.The casting tube 1 has a pouring opening 3 and comprises a coaxial to Giessöffnungsachse a, lower tubular part 4 and an upper plate 5. The plate 5 has on its underside two on both sides of the tubular part 4 arranged guide surfaces 10 which are inclined in the casting direction directed downwards and form a downwardly tapering plate cross-section. The angle α, the guide surfaces 10 include the Giessöffnungsachse a, 20 ° to 80 °, preferably 45 °, as shown, amount. About the guide surfaces 10, the pouring tube 1 for the purpose of replacing transversely to the casting direction, in the direction A to Fig. 3 , Adjusted and a new pouring tube 1 are brought back into the casting position.

Auf die Führungsflächen 10 wirken auch die bereits erwähnten, federbelasteten Anpressbolzen 2 (aus Fig. 2 ist lediglich der auf die eine Führungsfläche 10 einwirkende Anpressbolzen 2 ersichtlich; selbstverständlich sind auch der anderen Führungsfläche 10 Anpressbolzen 2 zugeordnet).On the guide surfaces 10 and the already mentioned, spring-loaded Anpressbolzen 2 (from Fig. 2 is only the acting on the one guide surface 10 Anpressbolzen 2 visible; Of course, the other guide surface 10 contact pins 2 are assigned).

Die beiden Führungsflächen 10 der Platte 5 sind in ihrer Längsrichtung bzw. in der Verstellrichtung A des Giessrohres 1 gekrümmt, dies stufenweise oder konvex oder in ähnlicher Weise gebogen, wie zum Beispiel oval, ein Vieleck, annähernd rund etc. Mit Vorteil sind sie bezüglich einer die Giessöffnungsachse a umfassenden, in Richtung A verlaufenden Mittelebene der Platte 5 konvex gekrümmt, wobei der Krümmungsradius R1 (Fig. 3) grösser ist als der maximale Abstand der jeweiligen Führungsfläche 10 von der die Giessöffnungsachse a umfassenden Mittelebene der Platte 5.The two guide surfaces 10 of the plate 5 are curved in their longitudinal direction or in the adjustment direction A of the pouring tube 1, this stepwise or convex or bent in a similar manner, such as oval, a polygon, approximately circular, etc. Advantageously, they are convexly curved with respect to a center plane of the plate 5 which extends in the direction of the casting opening axis a, the radius of curvature R1 (FIG. Fig. 3 ) is greater than the maximum distance of the respective guide surface 10 of the casting opening axis a comprehensive center plane of the plate fifth

Erfindungsgemäss werden die Anpressbolzen 2 jeweils mit einem Kopf 2a an die Führungsflächen 10 federnd angedrückt, der in der Verstellrichtung A des Giessrohres 1 konvex gewölbt ist und einen Krümmungsradius R3 (Fig. 3) aufweist. Die Anpressbolzen 2 stehen in einer Linienberührung mit den Führungsflächen 10. Die von den parallel zueinander angeordneten Anpressbolzen 2 auf die Platte 5 ausgeübten Druckkräfte verlaufen nicht parallel, sondern sind mehr ins Zentrum einwirkend und somit gleichmässiger verteilt. Dadurch wird die Gefahr, dass insbesondere am Übergang von der Platte 5 zum rohrförmigen Teil 4 im feuerfesten Material Risse entstehen, wesentlich vermindert (sowohl der rohrförmige Teil 4 als auch die Platte 5 bestehen aus einem feuerfesten Material, dass zumindest im Plattenbereich von einem Blechmantel 9 umgeben ist).According to the invention, the contact pins 2 are each resiliently pressed against the guide surfaces 10 with a head 2a, which is convexly curved in the adjustment direction A of the casting tube 1 and has a radius of curvature R3 (FIG. Fig. 3 ) having. The pressure pins 2 are in line contact with the guide surfaces 10. The pressure forces exerted on the plate 5 by the pressure bolts 2 arranged parallel to one another do not run parallel, but are distributed more in the center and thus more evenly distributed. As a result, the risk that in particular at the transition from the plate 5 to the tubular part 4 in the refractory material cracks, substantially reduced (both the tubular part 4 and the plate 5 are made of a refractory material that at least in the plate area of a metal jacket. 9 is surrounded).

Beim dargestellten Ausführungsbeispiel wirken jeweils drei Anpressbolzen 2 auf die jeweilige Führungsfläche 10. Die Anzahl der Anpressbolzen 2 könnte anders gewählt werden. Bei Verwendung von mehreren Anpressbolzen 2 wird mit Vorteil die Kopfhöhe und/oder der Federhub der einzelnen nebeneinander angeordneten Anpressbolzen 2 der Krümmung der jeweiligen Führungsfläche 10 angepasst und somit die Verspannkraft optimiert.In the illustrated embodiment, three contact pins 2 each act on the respective guide surface 10. The number of contact pins 2 could be chosen differently. When using several contact pin 2 is advantageously the head height and / or the spring stroke of each juxtaposed contact pin 2 of the curvature of the respective Guide surface 10 adapted and thus optimizes the clamping force.

Bei der in Fig. 1 bis 3 dargestellten Ausführungsform des Giessrohres 1 verlaufen die in ihrer Längsrichtung bzw. in der Verstellrichtung A des Giessrohres 1 gekrümmten, schräg nach unten gerichteten Führungsflächen 10 im vertikalen Schnitt gesehen gerade, was insbesondere in Fig. 2 ersichtlich ist.At the in Fig. 1 to 3 illustrated embodiment of the pouring tube 1 extend in its longitudinal direction or in the adjustment direction A of the pouring tube 1 curved, obliquely downwardly directed guide surfaces 10 seen in vertical section straight, which is particularly in Fig. 2 is apparent.

Fig. 4 zeigt ein Giessrohr 1' mit einer Platte 5', deren Führungsflächen 10' wiederum in ihrer Längsrichtung bzw. in der Verstellrichtung A des Giessrohres 1 einen Krümmungsradius R4 aufweisen, zusätzlich jedoch auch im vertikalen Querschnitt konvex ausgebildet sind, d.h. eine Wölbung nach aussen mit einem Radius R2 aufweisen. Der Krümmungsradius R4 der Führungsflächen 10' in der Verstellrichtung A ist bezüglich der Giessöffnungsachse a exzentrisch, ähnlich wie bei der Ausführung nach Fig. 1 bis 3. Fig. 4 shows a casting tube 1 'with a plate 5', the guide surfaces 10 'in turn in their longitudinal direction or in the adjustment A of the pouring tube 1 have a radius of curvature R4, but in addition are also convex in vertical cross-section, ie a curvature to the outside with a Have radius R2. The radius of curvature R4 of the guide surfaces 10 'in the adjustment direction A is eccentric with respect to the Giessöffnungsachse a, similar to the embodiment according to Fig. 1 to 3 ,

Auch bei der in Fig. 5 dargestellten Variante eines Giessrohres 1" sind die in ihrer Längsrichtung bzw. in der Verstellrichtung A des Giessrohres 1 gekrümmten Führungsflächen 10" zusätzlich auch im vertikalen Querschnitt nach aussen mit einem Radius R5 gewölbt. Was den Krümmungsradius R5 der Führungsflächen 10" in der Verstellrichtung A anbelangt, handelt es sich um eine sogenannte Schrägkreisvariante, bei der die den Radius R5 aufweisende Wölbung noch zusätzlich in einer beispielsweise 45° betragenden Schräglage zur Giessöffnungsachse a ausgeführt ist. Auch bei den Varianten nach Fig. 4 und Fig. 5 stehen die in der Verstellrichtung A des Giessrohres 1' bzw. 1" konvex gewölbten Anpressbolzen 2 in einer Punktberührung mit den entsprechenden Führungsflächen 10' bzw. 10", wobei die auf die Platte 5' bzw. 5" ausgeübten Druckkräfte gleichmässiger verteilt sind, als bei bekannten Giesrohren mit ebenen Führungsflächen.Also at the in Fig. 5 illustrated variant of a pouring tube 1 "are curved in their longitudinal direction or in the adjustment direction A of the pouring spout 1 guide surfaces 10" also curved in the vertical cross-section to the outside with a radius R5. As far as the radius of curvature R5 of the guide surfaces 10 "in the adjustment direction A is concerned, this is a so-called oblique circle variant in which the curvature having the radius R5 is additionally embodied in an oblique position, for example, of 45 ° to the pouring opening axis a. Also with the variants 4 and FIG. 5 are in the adjustment direction A of the casting tube 1 'and 1 "convexly curved contact pressure pin 2 in a point contact with the corresponding guide surfaces 10' and 10", wherein the force exerted on the plate 5 'and 5 "pressure forces are distributed evenly, as in known Giesrohren with flat guide surfaces.

Fig. 6 und Fig. 7 zeigen eine Variante eines Giessohres 61, welches an sich gleich ausgebildet ist wie dasjenige nach Fig. 1 bis Fig. 3 und daher nachfolgend nunmehr die Unterschiede erläutert sind. Dieses Giessrohr 61 ist ebenfalls mit diesen erfindungsgemässen Führungsflächen 60 versehen, welche in Giessrichtung schräg nach unten gerichtet sind und einen sich nach unten verjüngenden Plattenquerschnitt bilden. Der hauptsächliche Unterschied gegenüber den Führungsflächen 10 nach Fig. 1 besteht darin, dass deren Krümmungsradius R6 jeweils in horizontaler Ausrichtung. d.h. senkrecht zur Achse a gebildet ist. Dieser Krümmungsradius R6 ist wiederum um ein Vielfaches grösser als der Radius des rohrförmigen Teils 64 des Giessrohres 61. Fig. 6 and Fig. 7 show a variant of a Giessohres 61, which is the same in itself as that after Fig. 1 to Fig. 3 and therefore now the differences are explained below. This casting tube 61 is likewise provided with these guide surfaces 60 according to the invention, which are directed obliquely downward in the casting direction and form a plate cross-section tapering downwards. The main difference compared to the guide surfaces 10 after Fig. 1 is that their radius of curvature R6 each in a horizontal orientation. ie formed perpendicular to the axis a. This radius of curvature R6 is again greater by a multiple than the radius of the tubular part 64 of the pouring tube 61.

Gemäss Fig. 8 ist ein Ausführungsbeispiel einer erfindungsgemässen Anpressvorrichtung 50 mit senkrecht bzw. radial zur Führungsfläche 10 angeordneten Anpressbolzen 2' veranschaulicht. Es sind die vier Anpressbolzen 2' sowie die auf diese einwirkenden, koaxial zu den Anpressbolzen 2' angeordneten Feder 51 in einem Gehäuse 52 untergebracht, aus dem selbstverständlich die in Verstellrichtung A konvex gewölbten Köpfe 2a' zumindest teilweise hinausragen. Die Anpressvorrichtung 70 weist eine einfache, kompakte Bauweise auf.According to Fig. 8 is an embodiment of an inventive pressing device 50 with perpendicular or radially to the guide surface 10 arranged Anpressbolzen 2 'illustrated. There are the four pressure pins 2 'and acting on this, coaxial with the Anpressbolzen 2' disposed spring 51 housed in a housing 52, from which of course the convexly curved in the adjustment direction A heads 2a 'protrude at least partially. The pressing device 70 has a simple, compact design.

Fig. 9 zeigt eine weitere Ausführungsform einer erfindungsgemässen Giessrohrwechselvorrichtung 70, bei welcher das jeweilige Anpresselement nicht als ein Anpressbolzen, sondern als ein Kipphebel 72 ausgebildet ist, dessen eine Arm 73 mit dem in der Verstellrichtung A des Giessrohres konvex gewölbten Kopf 72a versehen und ein anderer Arm 74 von einer Feder 71 belastet ist. Während die Anpressung des Kopfes wiederum beispielsweise unter einem Winkel von 45° zur vertikalen Giessrohrachse erfolgt, ist die jeweilige Feder 71 horizontal angeordnet. Diese Bauweise ist komplizierter als diejenige nach Fig. 8 und beansprucht mehr Platz, allerdings ist hier die Hitzeeinwirkung auf die Federn 71 kleiner. Fig. 9 shows a further embodiment of a novel casting tube changing device 70, in which the respective contact element is not designed as a Anpressbolzen, but as a rocker arm 72, one arm 73 provided with the in the adjustment direction A of the spout convex head 72a and another arm 74 of a spring 71 is loaded. While the contact pressure of the head, in turn, for example, at an angle of 45 ° to the vertical Giessrohrachse, the respective spring 71 is arranged horizontally. This construction is more complicated than the one after Fig. 8 and takes up more space, but here the heat on the springs 71 is smaller.

Die Erfindung ist mit den erläuterten Ausführungsbeispielen ausreichend dargetan. Sie könnte aber noch in weiteren Varianten realisiert sein.The invention is sufficiently demonstrated with the illustrated embodiments. But you could still be realized in other variants.

Die Krümmung der Führungsflächen 10; 10'; 10" in ihrer Längsrichtung bzw. in der Verstellrichtung A des Giessrohres 1; 1'; 1" könnte theoretisch auch durch Aufteilen der jeweiligen Führungsfläche 10; 10'; 10" in ebene Teilstrecken, die zueinander unter einem Winkel stehen würden, realisiert werden.The curvature of the guide surfaces 10; 10 '; 10 "in its longitudinal direction or in the adjustment direction A of the pouring tube 1, 1 ', 1" could theoretically also be achieved by dividing the respective guide surface 10; 10 '; 10 "in flat sections that would be at an angle to each other, realized.

In den oben erläuterten Ausführungen verläuft der gebildete Krümmungsradius der jeweiligen Führungsfläche entweder senkrecht oder in einem Winkel (z.B. 45°) zur Achse a des Giessrohrs. Im Prinzip könnte dieser Winkel auch annähernd 0° betragen, d.h. der Krümmungsradius wäre dann parallel zur Achse a ausgerichtet. Je nachdem, wie dieser Winkel gewählt wird, wirkt sich dies auf die Form der Führungsfläche in ihrer Längsausbildung aus.In the embodiments explained above, the formed radius of curvature of the respective guide surface extends either perpendicularly or at an angle (eg 45 °) to the axis a of the pouring tube. In principle, this angle could also be approximately 0 °, ie the radius of curvature would then be aligned parallel to the axis a. Depending on how chosen this angle is, this affects the shape of the guide surface in their longitudinal training.

Die Anpressbolzen könnten statt parallel zueinander auch senkrecht zu den gekrümmten Führungsflächen bzw. zu den die Krümmung bildenden Teilstrecken angeordnet sein.Instead of being parallel to one another, the pressure bolts could also be arranged perpendicular to the curved guide surfaces or to the sections forming the curvature.

Theoretisch könnten die Anpressbolzen zumindest in der Giessposition auch statt in einer Linienberührung in einer Flächenberührung mit den Führungsflächen stehen.Theoretically, the pressure bolts could also be in surface contact with the guide surfaces, at least in the casting position, instead of in line contact.

Claims (6)

  1. Casting tube changing device at the spout of a metallurgical container, comprising pressable pressing elements (2; 2'; 72) that can be pressed onto guide surfaces (10; 10'; 10"; 60) of the casting tube (1, 1'; 1"; 61), whereby the casting tube (1, 1'; 1"; 61) comprising a tubular part (4; 64) and an upper plate (5; 5'; 5"), and the guide surfaces (10; 10'; 10"; 60) on the lower side of the plate (5; 5'; 5") being arranged to both sides of the tubular part (4; 64) and being directed downwardly at an angle and forming a downwardly tapering plate cross-section, characterised in that
    the pressing elements (2; 2'; 72) are respectively provided with a head (2a; 2a'; 72a) curved in stages or convexly in the adjustment direction (A) of the casting tube (1, 1'; 1"; 61) and can be pressed onto a guide surface (10; 10'; 10"; 60) of the casting tube (1, 1'; 1"; 61) curved in their longitudinal direction respectively in the adjustment direction (A).
  2. Casting tube changing device according to Claim 1, characterised in that the pressing elements are respectively configured as a pressing pin (2; 2') provided with the convexly curved head (2a; 2a'), whereby a spring (51) acting on the pressing pin (2; 2') being arranged coaxially to the latter.
  3. Casting tube changing device according to Claim 2, characterised in that a number of spring-loaded pressing pins (2; 2'), arranged next to one another in the adjustment direction (A) of the casting tube (1, 1'; 1"; 61), which can be pressed onto the respective guide surface (10; 10'; 10"; 60) of the plate (5; 5'; 5"), and which are respectively provided with a head (2a; 2a') convexly curved in the adjustment direction (A).
  4. Casting tube changing device according to Claim 3, characterised in that the pressing pins (2) that can be pressed onto the respective guide surface (10; 10'; 10"; 60) are arranged parallel next to one another.
  5. Casting tube changing device according to Claim 3, characterised in that the pressing pins (2') are directed perpendicularly to the curved guide surface (10; 10'; 10"; 60) respectively to the sub-sections forming the curvature.
  6. Casting tube changing device according to Claim 1, characterised in that the respective pressing element is configured as a tilting lever (72), whose one arm (73) is provided with the head (72a) convexly curved in the adjustment direction (A) of the casting tube (1; 1'; 1"; 61) and another arm (74) is loaded by a spring (71).
EP10730085.7A 2009-07-01 2010-06-30 Casting pipe changing device at the spout of a metallurgical vessel Active EP2448700B8 (en)

Priority Applications (2)

Application Number Priority Date Filing Date Title
PL10730085T PL2448700T3 (en) 2009-07-01 2010-06-30 Casting pipe changing device at the spout of a metallurgical vessel
EP10730085.7A EP2448700B8 (en) 2009-07-01 2010-06-30 Casting pipe changing device at the spout of a metallurgical vessel

Applications Claiming Priority (3)

Application Number Priority Date Filing Date Title
EP09008614A EP2269751B1 (en) 2009-07-01 2009-07-01 Pouring nozzle
PCT/EP2010/003855 WO2011000517A1 (en) 2009-07-01 2010-06-30 Pressing device for a casting pipe at the spout of a metallurgical container
EP10730085.7A EP2448700B8 (en) 2009-07-01 2010-06-30 Casting pipe changing device at the spout of a metallurgical vessel

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EP2448700A1 EP2448700A1 (en) 2012-05-09
EP2448700B1 true EP2448700B1 (en) 2014-11-05
EP2448700B8 EP2448700B8 (en) 2014-12-31

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EP09008614A Active EP2269751B1 (en) 2009-07-01 2009-07-01 Pouring nozzle
EP10730085.7A Active EP2448700B8 (en) 2009-07-01 2010-06-30 Casting pipe changing device at the spout of a metallurgical vessel

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JP (1) JP5379301B2 (en)
KR (3) KR20140011428A (en)
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AR (1) AR077271A1 (en)
AT (1) ATE510641T1 (en)
AU (1) AU2010268453B2 (en)
BR (2) BRPI1011243B1 (en)
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EP2448700B8 (en) 2014-12-31
US9314841B2 (en) 2016-04-19
RU2012103341A (en) 2013-08-10
RU2509624C2 (en) 2014-03-20
ES2364737T3 (en) 2011-09-13
MX2011013084A (en) 2012-01-27
BRPI1011182B1 (en) 2022-05-10
EP2269751A1 (en) 2011-01-05
SA110310547B1 (en) 2014-03-13
PL2448700T3 (en) 2015-07-31
UA99086C2 (en) 2012-07-10
ES2527821T3 (en) 2015-01-30
KR20120027304A (en) 2012-03-21
TW201102191A (en) 2011-01-16
US20120119486A1 (en) 2012-05-17
AR077271A1 (en) 2011-08-17
CA2762164C (en) 2013-10-01
ATE510641T1 (en) 2011-06-15
RS20110549A1 (en) 2012-08-31
KR101714808B1 (en) 2017-03-09
CN102548687A (en) 2012-07-04
AU2010268453A1 (en) 2011-12-08
CN102427899A (en) 2012-04-25
BRPI1011243A2 (en) 2016-11-29
KR101377870B1 (en) 2014-03-24
ZA201109363B (en) 2012-08-29
CA2762164A1 (en) 2011-01-06
PL2269751T3 (en) 2011-09-30
CN102548687B (en) 2013-11-20
EP2448700A1 (en) 2012-05-09
JP5379301B2 (en) 2013-12-25
AU2010268453B2 (en) 2012-11-29
CN102427899B (en) 2014-05-28
RU2011146066A (en) 2013-05-20
BRPI1011182A2 (en) 2016-12-27
JP2012531310A (en) 2012-12-10
US8887969B2 (en) 2014-11-18
WO2011000468A1 (en) 2011-01-06
WO2011000517A1 (en) 2011-01-06
BRPI1011243B1 (en) 2021-10-26
RU2545853C2 (en) 2015-04-10
EP2269751B1 (en) 2011-05-25
RS53047B (en) 2014-04-30
KR20140011428A (en) 2014-01-28
US20120043354A1 (en) 2012-02-23
TWI454326B (en) 2014-10-01
ZA201109390B (en) 2013-01-30
KR20120040193A (en) 2012-04-26

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