EP2448700A1 - Pressing device for a casting pipe at the spout of a metallurgical container - Google Patents

Pressing device for a casting pipe at the spout of a metallurgical container

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Publication number
EP2448700A1
EP2448700A1 EP10730085A EP10730085A EP2448700A1 EP 2448700 A1 EP2448700 A1 EP 2448700A1 EP 10730085 A EP10730085 A EP 10730085A EP 10730085 A EP10730085 A EP 10730085A EP 2448700 A1 EP2448700 A1 EP 2448700A1
Authority
EP
European Patent Office
Prior art keywords
adjustment direction
guide surface
pressing
spring
curved
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
EP10730085A
Other languages
German (de)
French (fr)
Other versions
EP2448700B1 (en
EP2448700B8 (en
Inventor
Jean-Daniel Cousin
Werner Keller
Benno Steiner
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.)
Refractory Intellectual Property GmbH and Co KG
Stopinc AG
Original Assignee
Refractory Intellectual Property GmbH and Co KG
Stopinc AG
Priority date (The priority date 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 date listed.)
Filing date
Publication date
Family has litigation
First worldwide family litigation filed litigation Critical https://patents.darts-ip.com/?family=41278537&utm_source=google_patent&utm_medium=platform_link&utm_campaign=public_patent_search&patent=EP2448700(A1) "Global patent litigation dataset” by Darts-ip is licensed under a Creative Commons Attribution 4.0 International License.
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
Publication of EP2448700B1 publication Critical patent/EP2448700B1/en
Application granted granted Critical
Publication of EP2448700B8 publication Critical patent/EP2448700B8/en
Active legal-status Critical Current
Anticipated expiration legal-status Critical

Links

Classifications

    • 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 the purpose of Auswechseins 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.
  • Document EP-BI 590 114 discloses a casting tube which comprises a lower tubular part coaxial with the casting opening axis and an upper plate. On the bottom of the plate are on both sides of the planar guide surfaces arranged, 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 pressing element which can be pressed against one guide surface of the casting tube.
  • the present invention has for its object to provide a Giessrohr- change device of the type mentioned above, 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 shows a first exemplary embodiment of a casting tube in side view, with three contact pins of a pressure device according to the invention
  • Figure 2 is a section along line II-II in Fig. 1.
  • FIG. 3 in an enlarged scale a section along the line III-III in
  • Fig. 4 shows a second exemplary embodiment of a casting tube in one of
  • FIG. 5 shows a third exemplary embodiment of a pouring tube in one of FIGS.
  • FIG. 6 shows a further exemplary embodiment of a casting tube in a perspective view
  • FIG. 7 shows a longitudinal section through the pouring tube according to FIG. 6;
  • FIGS. 1 to 3 shows an exemplary embodiment of a pressure device according to the invention, with a number and arrangement of the pressure bolts deviating from FIGS. 1 to 3;
  • FIG. 9 shows a further embodiment of a pressure device according to the invention.
  • FIGS. 1 to 3 show a replaceable pouring tube 1 which, by means of a pouring tube changing device, is in a pouring position at the pouring spout of a pouring tube.
  • nes metallurgical container is fixable.
  • the container itself is not shown in the drawing, and of the Giessrohr circuitvorraum 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 Auswechseins transversely to the casting direction, in the direction A of 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 stepped wise or convex or bent in a similar manner, such as oval, a polygon, approximately circular etc. They are advantageously with respect to a the Giessö Stammsachse a comprehensive, extending in the direction A center plane of the plate 5 convexly curved, wherein the radius of curvature Rl (Fig. 3) is greater than the maximum distance of the respective guide surface 10 from 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 by 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. 3).
  • 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.
  • 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 the individual adjoining Anpressbolzen 2 of the curvature of each Weil matched guide surface 10 and thus optimizes the clamping force.
  • the guide surfaces 10 which are curved in their longitudinal direction or in the adjustment direction A of the pouring tube 1 extend obliquely downwardly in a vertical section, as can be seen in particular in FIG.
  • Fig. 4 shows a pouring 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, i. have a curvature outwards with a radius R2.
  • the radius of curvature R4 of the guide surfaces 10 'in the adjustment direction A is eccentric with respect to the casting opening axis a, similar to the embodiment according to FIGS. 1 to 3.
  • the guide surfaces 10 " which are curved in their longitudinal direction or in the adjustment direction A of the casting tube 1, are also arched outwards in the vertical cross section with a radius R5.
  • 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. 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 on the plate. 5 'or 5 "pressure forces exerted evenly distributed, as in known Giesrohren with even guide surfaces.
  • FIG. 6 and FIG. 7 show a variant of a casting tube 61, which in itself has the same design as that of FIG. 1 to FIG. 3 and therefore 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 with respect to the guide surfaces 10 of Figure 1 is that their radius of curvature R6 is in each case in a horizontal orientation, i. is 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 an exemplary embodiment of a contact pressure device 50 according to the invention is illustrated with pressure bolts 2 'arranged perpendicularly or radially to the guide surface 10. 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 casting tube changing device 70 according to the invention, in which the respective pressing element is not designed as a pressure pin, but as a rocker arm 72, whose one arm 73 is connected to the head 72a which is convexly curved in the adjustment direction A of the casting tube provided and another arm 74 is loaded by a spring 71. 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 that of FIG. 8 and requires 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)
  • Molds, Cores, And Manufacturing Methods Thereof (AREA)
  • Laying Of Electric Cables Or Lines Outside (AREA)
  • Clamps And Clips (AREA)
  • Investigating Strength Of Materials By Application Of Mechanical Stress (AREA)
  • Nozzles (AREA)
  • Details Of Rigid Or Semi-Rigid Containers (AREA)
  • Filling Or Discharging Of Gas Storage Vessels (AREA)
  • Medicinal Preparation (AREA)

Abstract

The invention relates to a pressing device for a casting pipe at the spout of a metallurgical container, wherein the pressing device is provided with spring-loaded pressing elements (2) that can be pressed against guide surfaces (10) of a casting pipe (1). The casting pipe (1) comprises a tubular part (4) and an upper plate (5). The guide surfaces (10) are arranged on the underside of the plate (5) on both sides of the tubular part (4) and are directed downward at an angle. They form a plate cross-section that is tapered downward. The pressing elements (2) are each provided with a head (2a) that is convexly curved in the adjustment direction (A) of the casting pipe (1) and can be pressed against a guide surface (10) of the casting pipe (1), which is curved in the longitudinal direction of the pressing element or in the adjustment direction (A). Thus, the compressive forces exerted by the pressing pins are optimally transmitted, more toward the casting pipe opening and therefore acting more evenly.

Description

ANDRUCKVORRICHTUNG FUR EIN GIESSROHR AM AUSGUSS EINES METALLURGISCHEN BEHÄLTERS  ANDRUCK DEVICE FOR A PIPE AT THE OUTPUT OF A METALLURGICAL CONTAINER
Die Erfindung betrifft eine Giessrohrwechselvorrichtung zur Fixierung eines auswechselbaren, zwecks Auswechseins 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 the purpose of Auswechseins 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-I 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 Giessrich- tung schräg nach unten gerichtet sind und einen sich nach unten verjüngenden Plattenquerschnitt bilden. Das auswechselbare Giessrohr wird mittels einer auf die Führungsflächen einwirkenden Giessrohrwechselvorrich- tung in einer Giessstellung fixiert, die mindestens je ein federbelastetes, an je eine Führungsfläche des Giessrohres andrückbares Anpresselement umfasst. Document EP-BI 590 114 discloses a casting tube which comprises a lower tubular part coaxial with the casting opening axis and an upper plate. On the bottom of the plate are on both sides of the planar guide surfaces arranged, 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 pressing element which can be pressed against one guide surface of the casting tube.
Der vorliegenden Erfindung liegt die Aufgabe zugrunde, eine Giessrohr- wechselvorrichtung 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 Giessrohr- change device of the type mentioned above, which allows in conjunction with particularly advantageous trained guide surfaces of the Giessrohres optimal pressure force transmission.
Diese Aufgabe wird erfindungsgemäss durch eine Giessrohrwechselvor- richtung mit den Merkmalen des Anspruches 1 gelöst. This object is achieved according to the invention by a casting tube changing device having the features of claim 1.
Weitere bevorzugte Ausgestaltungen der erfindungsgemässen Giessrohr- wechselvorrichtung bilden den Gegenstand der abhängigen Ansprüche. Further preferred embodiments of the invention Giessrohr- 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: The invention will be explained in more detail with reference to the drawings. Show it:
Fig. 1 ein erstes Ausfuhrungsbeispiel eines Giessrohres in Seitenansicht, mit drei Anpressbolzen einer erfindungsgemässen Andruckvorrichtung; 1 shows a first exemplary embodiment of a casting tube in side view, with three contact pins of a pressure device according to the invention;
Fig. 2 einen Schnitt nach Linie II-II in Fig. 1 ;  Figure 2 is a section along line II-II in Fig. 1.
Fig. 3 im vergrösserten Massstab einen Schnitt nach Linie III-III in  Fig. 3 in an enlarged scale a section along the line III-III in
Fig.2;  Figure 2;
Fig. 4 ein zweites Ausfuhrungsbeispiel eines Giessrohres in einer der  Fig. 4 shows a second exemplary embodiment of a casting tube in one of
Fig. 2 entsprechenden Darstellung;  Fig. 2 corresponding representation;
Fig. 5 ein drittes Ausfuhrungsbeispiel eines Giessrohres in einer der Fig.  5 shows a third exemplary embodiment of a pouring tube in one of FIGS.
2 entsprechenden Darstellung;  2 corresponding representation;
Fig. 6 ein weiteres Ausfuhrungsbeispiel eines Giessrohres in perspektivischer Darstellung;  6 shows a further exemplary embodiment of a casting tube in a perspective view;
Fig. 7 einen Längsschnitt durch das Giessrohr nach Fig. 6;  7 shows a longitudinal section through the pouring tube according to FIG. 6; FIG.
Fig. 8 ein Ausfuhrungsbeispiel einer erfindungsgemässen Andruckvorrichtung, mit einer von Fig. 1 bis 3 abweichenden Anzahl und Anordnung der Anpressbolzen; und  8 shows an exemplary embodiment of a pressure device according to the invention, with a number and arrangement of the pressure bolts deviating from FIGS. 1 to 3; and
Fig. 9 eine weitere Ausfuhrungsform einer erfindungsgemässen Andruckvorrichtung.  9 shows a further embodiment of a pressure device according to the invention.
In Fig. l bis 3 ist ein auswechselbares Giessrohr 1 dargestellt, das mittels einer Giessrohrwechselvorrichtung in einer Giessposition am Ausguss ei- nes 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. FIGS. 1 to 3 show a replaceable pouring tube 1 which, by means of a pouring tube changing device, is in a pouring position at the pouring spout of a pouring tube. nes 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 Auswechseins 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 Auswechseins transversely to the casting direction, in the direction A of 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). The already mentioned, spring-loaded pressure pins 2 act on the guide surfaces 10 (only the pressure pin 2 acting on the one guide surface 10 can be seen from Fig. 2, of course, the pressure pads 2 are also assigned to the other guide surface 10).
Die beiden Führungsflächen 10 der Platte 5 sind in ihrer Längsrichtung bzw. in der Verstellrichtung A des Giessrohres 1 gekrümmt, dies stufen- weise 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 Rl (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 stepped wise or convex or bent in a similar manner, such as oval, a polygon, approximately circular etc. They are advantageously with respect to a the Giessöffnungsachse a comprehensive, extending in the direction A center plane of the plate 5 convexly curved, wherein the radius of curvature Rl (Fig. 3) is greater than the maximum distance of the respective guide surface 10 from 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 by 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. 3). 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 je- weiligen 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 pins 2 is advantageously the head height and / or the spring stroke of the individual adjoining Anpressbolzen 2 of the curvature of each Weil matched guide surface 10 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. In the embodiment of the pouring tube 1 shown in FIGS. 1 to 3, the guide surfaces 10 which are curved in their longitudinal direction or in the adjustment direction A of the pouring tube 1 extend obliquely downwardly in a vertical section, as can be seen in particular in FIG.
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 Giessöff- nungsachse a exzentrisch, ähnlich wie bei der Ausführung nach Fig. 1 bis 3. Fig. 4 shows a pouring 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, i. have a curvature outwards with a radius R2. The radius of curvature R4 of the guide surfaces 10 'in the adjustment direction A is eccentric with respect to the casting opening axis a, similar to the embodiment according to FIGS. 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. 5, the guide surfaces 10 ", which are curved in their longitudinal direction or in the adjustment direction A of the casting tube 1, are also arched outwards in the vertical cross section 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 in the variants of FIG. 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 on the plate. 5 'or 5 "pressure forces exerted evenly distributed, as in known Giesrohren with even 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 casting tube 61, which in itself has the same design as that of FIG. 1 to FIG. 3 and therefore 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 with respect to the guide surfaces 10 of Figure 1 is that their radius of curvature R6 is in each case in a horizontal orientation, i. is 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. Fig. 9 zeigt eine weitere Aus führungs form 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 Giess- rohres 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. According to FIG. 8, an exemplary embodiment of a contact pressure device 50 according to the invention is illustrated with pressure bolts 2 'arranged perpendicularly or radially to the guide surface 10. 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. 9 shows a further embodiment of a casting tube changing device 70 according to the invention, in which the respective pressing element is not designed as a pressure pin, but as a rocker arm 72, whose one arm 73 is connected to the head 72a which is convexly curved in the adjustment direction A of the casting tube provided and another arm 74 is loaded by a spring 71. 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 that of FIG. 8 and requires 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

PATENTANSPRÜCHE
1. Giessrohrwechselvorrichtung am Ausguss eines metallurgischen Behälters, mit federbelasteten, an Führungsflächen (10; 10'; 10"; 60) eines Giessrohres (1, 1 '; 1 "; 61) andrückbaren Anpresselementen (2; 2'; 72), wobei das Giessrohr (1, 1 '; 1 "; 61) einen rohrförmigen Teil (4; 64) sowie eine obere Platte (5; 5'; 5") umfasst und die Führungsflächen (10; 10' ; 10"; 60) auf der Unterseite der Platte (5; 5'; 5") zu beiden Seiten des rohrförmigen Teils (4; 64) angeordnet und schräg nach unten gerichtet sind und einen sich nach unten verjüngenden Plattenquerschnitt bilden, dadurch gekennzeichnet, dass 1. Gießrohrwechselvorrichtung at the spout of a metallurgical container, with spring-loaded, on guide surfaces (10, 10 ', 10 ", 60) of a pouring tube (1, 1', 1", 61) andrückbaren pressing members (2, 2 ', 72), wherein 61) comprises a tubular part (4; 64) and an upper plate (5; 5 '; 5 ") and the guide surfaces (10; 10'; 10"; 60) arranged on both sides of the tubular part (4; 64) and directed obliquely downwards to form a bottom tapering plate cross-section, characterized in that
die Anpresselemente (2; 2'; 72) jeweils mit einem in der Verstellrichtung (A) des Giessrohres (1 ; 1 '; 1 "; 61) stufenweise oder konvex oder ähnlich gekrümmten Kopf (2a; 2a'; 72a) versehen und an eine in ihrer Längsrichtung bzw. in der Verstellrichtung (A) gekrümmte Führungsfläche (10; 10'; 10"; 60) des Giessrohres (1, 1 '; 1 "; 61) andrückbar sind. each of the pressing elements (2, 2 ', 72) is provided with a head (2a, 2a', 72a) that is stepwise or convexly or similarly curved in the adjustment direction (A) of the pouring tube (1, 1 ', 1 ", 61) a guide surface (10; 10 '; 10 "; 60) of the casting tube (1, 1';1"; 61) which is curved in its longitudinal direction or in the adjustment direction (A) can be pressed.
2. Giessrohrwechselvorrichtung nach Anspruch 1, dadurch gekennzeichnet, dass die Anpresselemente jeweils als ein mit dem konvex gewölbten Kopf (2a; 2a') versehener Anpressbolzen (2; 2') ausgebildet sind, wobei eine auf den Anpressbolzen (2; 2') einwirkende Feder (51) koaxial zu demselben angeordnet ist. 2. Giessrohrwechselvorrichtung according to claim 1, characterized in that the pressing elements in each case as a convexly curved head (2a, 2a ') versehener Anpressbolzen (2, 2') are formed, one on the pressing pins (2, 2 ') acting Spring (51) is arranged coaxially thereto.
3. Giessrohrwechselvorrichtung nach Anspruch 2, dadurch gekennzeichnet, dass jeweils eine Anzahl von an die jeweilige Führungsfläche (10; 10'; 10"; 60) der Platte (5; 5'; 5") andrückbaren, in der Verstellrichtung (A) des Giessrohres (1 ; 1 '; 1 "; 61) nebeneinander angeordneten, federbelasteten Anpressbolzen (2; 2') vorgesehen sind, die jeweils mit einem in der Verstellrichtung (A) konvex gewölbten Kopf (2a; 2a') versehen sind. 3. Gießrohrwechselvorrichtung according to claim 2, characterized in that in each case a number of the respective guide surface (10, 10 ', 10 ", 60) of the plate (5, 5', 5") pressed, in the adjustment direction (A) of 61) are provided next to each other, spring-loaded pressure pins (2, 2 ') are provided, each with a in the adjustment direction (A) convexly curved head (2a, 2a') are provided.
4. Giessrohrwechselvorrichtung nach Anspruch 3, dadurch gekennzeichnet, dass die an die jeweilige Führungsfläche (10; 10'; 10"; 60) andrückbaren Anpressbolzen (2) parallel nebeneinander angeordnet sind. 4. Giessrohrwechselvorrichtung according to claim 3, characterized in that on the respective guide surface (10; 10 ', 10 "; 60) and pressable Anpressbolzen (2) are arranged parallel to each other.
5. Giessrohrwechselvorrichtung nach Anspruch 4, dadurch gekennzeichnet, dass zur Optimierung der Verspannkraft die Kopfhöhe und/oder der Federhub der einzelnen nebeneinander angeordneten Anpressbolzen (2) der Krümmung der jeweiligen Führungsfläche (10; 10'; 10"; 60) ange- passt ist/sind. 5. Gießrohrwechselvorrichtung according to claim 4, characterized in that for optimizing the clamping force, the head height and / or the spring stroke of the individual juxtaposed Anpressbolzen (2) of the curvature of the respective guide surface (10; 10 ', 10 ", 60) is adjusted /are.
6. Giessrohrwechsel Vorrichtung nach Anspruch 3, dadurch gekennzeichnet, dass die Anpressbolzen (2') senkrecht zu der gekrümmten Führungsfläche (10; 10'; 10"; 60) bzw. zu den die Krümmung bildenden Teilstrecken gerichtet sind. 6. Gießrohrwechsel Apparatus according to claim 3, characterized in that the pressure pins (2 ') are directed perpendicular to the curved guide surface (10; 10'; 10 "; 60) or to the parting lines forming the curvature.
7. Giessrohrwechselvorrichtung nach Anspruch 1, dadurch gekennzeichnet, dass das jeweilige Anpresselement als ein Kipphebel (72) ausgebildet ist, dessen ein Arm (73) mit dem in der Verstellrichtung (A) des Giessrohres (1 ; 1 '; 1 "; 61) konvex gewölbten Kopf (72a) versehen und ein anderer Arm (74) von einer Feder (71) belastet ist. 7. Gießrohrwechselvorrichtung according to claim 1, characterized in that the respective pressing element as a rocker arm (72) is formed, one arm (73) with the in the adjustment direction (A) of the Giessrohres (1, 1 ', 1 "; 61) convexly arched head (72a) provided and another arm (74) by a spring (71) is loaded.
EP10730085.7A 2009-07-01 2010-06-30 Casting pipe changing device at the spout of a metallurgical vessel Active EP2448700B8 (en)

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PL10730085T PL2448700T3 (en) 2009-07-01 2010-06-30 Casting pipe changing device at the spout of a metallurgical vessel
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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
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