EP0076790B1 - Device for the dosed charging of a continuous-casting mould with casting flux - Google Patents

Device for the dosed charging of a continuous-casting mould with casting flux Download PDF

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Publication number
EP0076790B1
EP0076790B1 EP82890103A EP82890103A EP0076790B1 EP 0076790 B1 EP0076790 B1 EP 0076790B1 EP 82890103 A EP82890103 A EP 82890103A EP 82890103 A EP82890103 A EP 82890103A EP 0076790 B1 EP0076790 B1 EP 0076790B1
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EP
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Prior art keywords
discharge
casting
casting powder
discharge edge
metering gap
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EP82890103A
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German (de)
French (fr)
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EP0076790A1 (en
Inventor
Kurt Dipl.Ing. Stangl
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Voestalpine AG
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Voestalpine AG
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    • BPERFORMING OPERATIONS; TRANSPORTING
    • B22CASTING; POWDER METALLURGY
    • B22DCASTING OF METALS; CASTING OF OTHER SUBSTANCES BY THE SAME PROCESSES OR DEVICES
    • B22D11/00Continuous casting of metals, i.e. casting in indefinite lengths
    • B22D11/10Supplying or treating molten metal
    • B22D11/108Feeding additives, powders, or the like

Definitions

  • the invention relates to a device for metering a continuous casting mold with casting powder, consisting of a conveyor device which can be connected to a storage container for the casting powder and which has a discharge edge at the discharge end which runs as a function of the cross-sectional shape of the mold.
  • D EA Nos. 2814496 and 2833867 In order to be able to meter the casting powder into a continuous casting mold, it is known (D EA Nos. 2814496 and 2833867) to provide a pneumatic conveying device in which air is blown into the casting powder through the discharge base, so that a fluidization effect occurs which affects the flowability of the casting powder. Depending on the degree of fluidization, more or less casting powder is therefore fed to the continuous casting mold. The flow rate can therefore be controlled depending on the heat radiation from the bath surface via the air supply through the discharge floor. The radiated heat is influenced by the layer height of the casting powder.
  • the delivery rate of the casting powder can be controlled, but not its uniform distribution over the bath surface.
  • the course of the discharge edge is generally chosen such that the casting powder trickles onto the bath surface in the middle between the dip tube for supplying the melt and the peripheral wall of the mold.
  • the distribution of the casting powder on the bath surface is measured, for example with the aid of radiation-sensitive measuring devices, and the casting powder is fed as a function of the distribution determined by a conveyor device, the outlet channels for the casting powder which can be moved over the bath surface having.
  • the outlet channels are connected to a vibrating conveyor, which ensures a corresponding supply of casting powder. Since quantity control for the casting powder can also be provided, a uniform casting powder distribution can be guaranteed, but with a considerable, trouble-prone tax expenditure.
  • the invention is therefore based on the object of providing a device for metering a continuous casting mold with casting powder, which ensures the desired distribution of the casting powder on the bath surface with simple means.
  • the invention achieves the object in that the conveying device consists of an oscillating conveyor which carries a damming wall along the discharge edge with a metering gap which runs along the discharge edge in Depending on the distribution of the delivery pressure acting on the casting powder along the metering gap in the outflow direction is different.
  • This conveying pressure depends on the one hand on the conveying force of the vibratory conveyor and on the other hand on the loading of the casting powder by the pent-up layers of casting spool which try to push the layers of casting spool underneath laterally. This creates the possibility of applying the same amount of casting powder to the bath surface also through discharge edge cuts running in the conveying direction of the vibratory conveyor. However, it must be taken into account that the delivery pressure on the casting powder caused by the load-bearing layers of casting powder is lower than the delivery pressure by the vibrating conveyor itself, so that the gap height must be different to compensate for the different conditions that arise along the metering gap.
  • the gap widths must accordingly be chosen smaller, whereby it must also be taken into account that the height of the metering gap also becomes smaller as the angle of inclination between the conveying direction of the vibratory conveyor and the discharge edge decreases due to the decreasing delivery pressure in the outflow direction must be larger in order to ensure the same amount of dropping over the discharge edge course.
  • the most important factor is the delivery pressure distribution across the metering gap, because the delivery pressure itself and therefore the discharge quantity is determined by the vibration amplitudes of the vibratory bowl feeder and is independent of the delivery pressure distribution.
  • Casting powder is generally very free-flowing, so that very small gap widths result in the desired discharge amount. This means that even slight deviations in the gap height disrupt the desired distribution of the amount of casting powder discharged.
  • the metering gap in the region of the discharge edge can be divided like a comb by vertical webs. With the same gap cross-section, the webs require a greater height of the outlet openings between the webs, so that slight inaccuracies with regard to the gap height can only make themselves slightly noticeable.
  • the ridge effect is substantially supported by the ridges arranged in the manner of a comb, which has an advantageous influence on the uniform distribution of the casting powder to be discharged over the discharge edge.
  • the height of the metering gap in the region of the discharge edge can finally be adjustable, for example by adjustable tongues mounted on the baffle wall. Subsequent adjustment is also possible, which can take all influences into account.
  • the device shown for metering a continuous casting mold with casting powder consists essentially of an oscillating conveyor 1 which is supported by spring elements 2 and is connected to an oscillating drive 3. On the feed side, this vibratory conveyor 1 is connected to a storage container 4 for the casting powder, it being possible for the discharge quantity to be controlled via an indicated slide 5.
  • the vibratory conveyor 1 has a discharge edge 6, the course of which is adapted to the cross-sectional shape of a mold, the outline shape of which is indicated in FIG. 2 by the dash-dotted line 7.
  • the position of the dip tube 8 for the supply of the melt can be seen from this figure.
  • the discharge edge 6 is designed such that the casting powder is introduced into the mold approximately centrally between the circumferential wall of the mold 7 and the dip tube and can consequently be distributed uniformly on the bath surface. The prerequisite for this, however, is that the casting powder flows in a metered manner over the length of the discharge edge.
  • the vibrating conveyor 1 carries along the discharge edge 6 a baffle 9 with a metering gap 10 which is divided like a comb by vertical webs 11 according to the embodiment. 1 and 3 it can clearly be seen that the height of the metering gap is different over the length of the discharge edge, namely the height of the metering gap 10 decreases with increasing accumulation height of the casting powder, as can be seen on the basis of the dashed height of the dumping height 12, which arises due to the conveyance of casting powder against the dam 9.
  • the height of the metering gap is not only dependent on the respective bed height or the bed height distribution, but also on the inclination of the discharge edge 6 with respect to the conveying direction of the vibratory conveyor 1.
  • the conveying force acting in the conveying direction naturally results in a larger in the area of a baffle wall running transversely to the conveying direction Delivery pressure in the outflow direction on the casting powder than in the area of a dam wall inclined at an acute angle.
  • the dynamic pressure and the load-bearing casting spool layers are effective with their weight in order to press the casting powder through the metering gap 10, which is taken into account by the different gap height.

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  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Filling Or Emptying Of Bunkers, Hoppers, And Tanks (AREA)
  • Jigging Conveyors (AREA)
  • Continuous Casting (AREA)

Description

Die Erfindung bezieht sich auf eine Vorrichtung zum dosierten Beschicken einer Stranggiesskokille mit Giesspulver, bestehend aus einer an einen Vorratsbehälter für das Giesspulver anschliessbaren Fördereinrichtung, die am Austragsende eine in Abhängigkeit von der Querschnittsform der Kokille verlaufende Abwurfkante aufweist.The invention relates to a device for metering a continuous casting mold with casting powder, consisting of a conveyor device which can be connected to a storage container for the casting powder and which has a discharge edge at the discharge end which runs as a function of the cross-sectional shape of the mold.

Um das Giesspulver dosiert in eine Stranggiesskokille einbringen zu können, ist es bekannt ( D E-A Nrn. 2814496 und 2833867), eine pneumatische Fördereinrichtung vorzusehen, bei der durch den Austragsboden Luft in das Giesspulver eingeblasen wird, so dass ein Fluidisierungseffekt auftritt, der die Fliessfähigkeit des Giesspulvers beeinflusst. Je nach dem Fluidisierungsgrad wird daher mehr oder weniger Giesspulver der Stranggiesskokille zugeführt. Über die Luftzufuhr durch den Austragsboden kann folglich die Fördermenge in Abhängigkeit von der Wärmestrahlung der Badoberfläche gesteuert werden. Die abgestrahlte Wärme wird ja von der Schichthöhe des Giesspulvers beeinflusst.In order to be able to meter the casting powder into a continuous casting mold, it is known (D EA Nos. 2814496 and 2833867) to provide a pneumatic conveying device in which air is blown into the casting powder through the discharge base, so that a fluidization effect occurs which affects the flowability of the casting powder. Depending on the degree of fluidization, more or less casting powder is therefore fed to the continuous casting mold. The flow rate can therefore be controlled depending on the heat radiation from the bath surface via the air supply through the discharge floor. The radiated heat is influenced by the layer height of the casting powder.

Mit Hilfe dieser bekannten Vorrichtung kann zwar die Fördermenge des G iesspulvers, nicht aber deren gleichmässige Verteilung über die Badoberfläche gesteuert werden. Zu diesem Zweck wäre es nämlich erforderlich, die Fördermenge des Giesspulvers entsprechend über den Abwurfkantenverlauf zu verteilen, um entlang der Abwurfkante eine dosierte Giesspulverabgabe sicherzustellen. Der Verlauf der Abwurfkante ist in Abhängigkeit von der Querschnittsform der Kokille im allgemeinen so gewählt, dass das Giesspulver mittig zwischen dem Tauchrohr für die Schmelzezuführung und der Umfangswand der Kokille auf die Badoberfläche rieselt.With the aid of this known device, the delivery rate of the casting powder can be controlled, but not its uniform distribution over the bath surface. For this purpose it would be necessary to distribute the delivery rate of the casting powder accordingly over the discharge edge course in order to ensure a metered delivery of casting powder along the discharge edge. Depending on the cross-sectional shape of the mold, the course of the discharge edge is generally chosen such that the casting powder trickles onto the bath surface in the middle between the dip tube for supplying the melt and the peripheral wall of the mold.

Bei einer anderen bekannten Vorrichtung (DE-A Nr. 2425381) wird die Verteilung des Giesspulvers auf der Badoberfläche beispielsweise mit Hilfe strahlungsempfindlicher Messgeräte gemessen und das Giesspulver in Abhängigkeit von der festgestellten Verteilung durch eine Fördereinrichtung zugeführt, die über die Badoberfläche bewegbare Austrittskanäle für das Giesspulver aufweist. Die Austrittskanäle sind dabei an einen Schwingförderer angeschlossen, der für eine entsprechende Giesspulverzuförderung sorgt. Da zusätzlich eine Mengensteuerung für das Giesspulver vorgesehen werden kann, kann eine gleichmässige Giesspulververteilung gewährleistet werden, jedoch mit einem erheblichen, störungsanfälligen Steueraufwand.In another known device (DE-A No. 2425381), the distribution of the casting powder on the bath surface is measured, for example with the aid of radiation-sensitive measuring devices, and the casting powder is fed as a function of the distribution determined by a conveyor device, the outlet channels for the casting powder which can be moved over the bath surface having. The outlet channels are connected to a vibrating conveyor, which ensures a corresponding supply of casting powder. Since quantity control for the casting powder can also be provided, a uniform casting powder distribution can be guaranteed, but with a considerable, trouble-prone tax expenditure.

Der Erfindung liegt somit die Aufgabe zugrunde, eine Vorrichtung zum dosierten Beschicken einer Stranggiesskokille mit Giesspulver zu schaffen, die mit einfachen Mitteln eine gewünschte Verteilung des Giesspulvers auf der Badoberfläche sicherstellt.The invention is therefore based on the object of providing a device for metering a continuous casting mold with casting powder, which ensures the desired distribution of the casting powder on the bath surface with simple means.

Ausgehend von einer Vorrichtung der eingangs geschilderten Art (DE-A Nrn. 2814496 und 2833867) löst die Erfindung die gestellte Aufgabe dadurch, dass die Fördereinrichtung aus einem Schwingförderer besteht, der entlang der Abwurfkante eine Stauwand mit einem Dosierspalt trägt, der entlang der Abwurfkante in Abhängigkeit von der Verteilung des entlang des Dosierspaltes in Ausflussrichtung auf das Giesspulver wirkenden Förderdruckes unterschiedlich hoch ist.Starting from a device of the type described at the outset (DE-A Nos. 2814496 and 2833867), the invention achieves the object in that the conveying device consists of an oscillating conveyor which carries a damming wall along the discharge edge with a metering gap which runs along the discharge edge in Depending on the distribution of the delivery pressure acting on the casting powder along the metering gap in the outflow direction is different.

Da mit Hilfe eines üblichen Schwingförderers über die Schwingungsamplituden zwar in einfacher Weise die Fördermenge des Fördergutes, nicht aber die Verteilung des Fördergutes entlang einer unterschiedlich zur Förderrichtung geneigten Abwurfkante gewährleistet werden kann, scheint ein solcher Schwingförderer zunächst für die Lösung der gestellten Aufgabe ungeeignet zu sein. Durch das Vorsehen einer Stauwand entlang der Abwurfkante gelingt es jedoch im Zusammenhang mit einem Dosierspalt einen dosierten Ausfluss des Giesspulvers über die gesamte Länge des Dosierspaltes zu erzwingen, wenn die Spaltweite in Abhängigkeit von dem Förderdruck auf das Giesspulver im jeweiligen Spaltbereich gewählt wird. Dieser Förderdruck hängt einerseits von der Förderkraft des Schwingförderers und anderseits von der Belastung des Giesspulvers durch die aufgestauten Giesspulverschichten ab, die die darunterliegenden Giesspulverschichten seitlich wegzudrücken versuchen. Damit ist die Möglichkeit geschaffen, auch über in Förderrichtung des Schwingförderers verlaufende Abwurfkantenschnitte gleiche Giesspulvermengen auf die Badoberfläche aufzubringen. Allerdings muss berücksichtigt werden, dass der durch die auflastenden Giesspulverschichten bedingte Förderdruck auf das Giesspulver kleiner als der Förderdruck durch den Schwingförderer selbst ist, so dass zum Ausgleich der sich entlang des Dosierspaltes ergebenden, unterschiedlichen Verhältnisse die Spalthöhe unterschiedlich sein muss. Mit zunehmender, durch die Aufstauung der Stauwand bedingten Schütthöhe werden demnach die Spaltweiten kleiner zu wählen sein, wobei zusätzlich zu berücksichtigen ist, dass auch mit kleiner werdendem Neigungswinkel zwischen der Förderrichtung des Schwingförderers und der Abwurfkante wegen des dabei abnehmenden Förderdruckes in Ausflussrichtung die Höhe des Dosierspaltes grösser werden muss, um gleiche Abwürfmengen über den Abwurfkantenverlauf zu gewährleisten. Es braucht wohl nicht näher erwähnt zu werden, dass es dabei vor allem auf die Förderdruckverteilung über den Dosierspalt ankommt, weil der Förderdruck selbst und damit die Austragsmenge über die Schwingungsamplituden des Schwingförderers bestimmt wird und von der Förderdruckverteilung unabhängig ist.Such a vibratory conveyor initially seems to be unsuitable for the solution of the task, since with the help of a conventional vibratory conveyor the vibrational amplitudes can easily ensure the conveyed quantity of the conveyed good, but not the distribution of the conveyed good along a discharge edge inclined differently to the conveying direction. By providing a baffle along the discharge edge, however, it is possible in connection with a metering gap to force a metered outflow of the casting powder over the entire length of the metering gap if the gap width is selected depending on the delivery pressure on the casting powder in the respective gap area. This conveying pressure depends on the one hand on the conveying force of the vibratory conveyor and on the other hand on the loading of the casting powder by the pent-up layers of casting spool which try to push the layers of casting spool underneath laterally. This creates the possibility of applying the same amount of casting powder to the bath surface also through discharge edge cuts running in the conveying direction of the vibratory conveyor. However, it must be taken into account that the delivery pressure on the casting powder caused by the load-bearing layers of casting powder is lower than the delivery pressure by the vibrating conveyor itself, so that the gap height must be different to compensate for the different conditions that arise along the metering gap. With increasing bed height caused by the build-up of the baffle wall, the gap widths must accordingly be chosen smaller, whereby it must also be taken into account that the height of the metering gap also becomes smaller as the angle of inclination between the conveying direction of the vibratory conveyor and the discharge edge decreases due to the decreasing delivery pressure in the outflow direction must be larger in order to ensure the same amount of dropping over the discharge edge course. Needless to say, the most important factor is the delivery pressure distribution across the metering gap, because the delivery pressure itself and therefore the discharge quantity is determined by the vibration amplitudes of the vibratory bowl feeder and is independent of the delivery pressure distribution.

Um einen gleichmässigen Giesspulveraustrag über den gesamten Abwurfkantenverlauf sicherzustellen, ist selbstverständlich eine gleichmässige Beschickung über die Breite des Schwingförderers vorauszusetzen. Eine solche gleichmässige Verteilung des Giesspulvers über die Schwingförderbreite kann auch bei vergleichsweise kurzen Schwingförderern dadurch erzwungen werden, dass in Förderrichtung vor dem Austragsende wenigstens eine zusätzliche, quer zur Förderrichtung verlaufende Stauwand mit einem Dosierspalt konstanter Höhe liegt. Dieser vorgeordnete Dosierspalt übernimmt die Aufgabe, eine gleichmässige Schichtdicke des Giesspulvers über die Schwingförderbreite zu erzwingen, selbst wenn die Schichtstärke vor dem Dosierspalt ungleichmässig wäre.In order to ensure a uniform casting powder discharge over the entire discharge edge course, a uniform loading across the width of the vibrating conveyor must of course be assumed. Such even distribution of the casting powder over the vibrating conveyor width can be enforced even in the case of comparatively short vibratory conveyors in that in the conveying direction before the discharge end at least one additional baffle wall running transversely to the conveying direction has a metering gap constant height. This upstream metering gap takes on the task of forcing a uniform layer thickness of the casting powder over the oscillating conveying width, even if the layer thickness in front of the metering gap would be uneven.

Giesspulver ist im allgemeinen sehr fliessfähig, so dass bereits sehr geringe Spaltweiten die gewünschte Austragsmenge ergeben. Dies bedeutet, dass bereits geringfügige Abweichungen in der Spalthöhe die gewünschte Verteilung der ausgetragenen Giesspulvermenge stören. Um hier in einfacher Weise Abhilfe zu schaffen, kann der Dosierspalt im Bereich der Abwurfkante durch vertikale Stege kammartig unterteilt sein. Die Stege bedingen bei gleichem Spaltquerschnitt eine grössere Höhe der Austrittsöffnungen zwischen den Stegen, so dass sich geringfügige Ungenauigkeiten hinsichtlich der Spalthöhe auch nur geringfügig bemerkbar machen können. Ausserdem wird durch die kammartig angeordneten Stege der Staueffekt wesentlich unterstützt, was auf die gleichmässige Verteilung des auszutragenden Giesspulvers über die Abwurfkante einen vorteilhaften Einfluss hat.Casting powder is generally very free-flowing, so that very small gap widths result in the desired discharge amount. This means that even slight deviations in the gap height disrupt the desired distribution of the amount of casting powder discharged. To remedy this in a simple manner, the metering gap in the region of the discharge edge can be divided like a comb by vertical webs. With the same gap cross-section, the webs require a greater height of the outlet openings between the webs, so that slight inaccuracies with regard to the gap height can only make themselves slightly noticeable. In addition, the ridge effect is substantially supported by the ridges arranged in the manner of a comb, which has an advantageous influence on the uniform distribution of the casting powder to be discharged over the discharge edge.

Um eine Anpassung an unterschiedliche Verhältnisse oder an Ungleichmässigkeiten des Schwingförderers zu ermöglichen, wie sie beispielsweise auf Grund von entstehenden Schwingungsfiguren auftreten, kann schliesslich die Höhe des Dosierspaltes im Bereich der Abwurfkante, beispielweise durch verstellbar an der Stauwand gelagerte Zungen, einstellbar sein. Damit ist auch eine nachträgliche Justierung möglich, die alle Einflüsse berücksichtigen kann.In order to enable adaptation to different conditions or to irregularities in the vibratory conveyor, such as occur, for example, as a result of vibration patterns that arise, the height of the metering gap in the region of the discharge edge can finally be adjustable, for example by adjustable tongues mounted on the baffle wall. Subsequent adjustment is also possible, which can take all influences into account.

. In der Zeichnung ist der Erfindungsgegenstand beispielsweise dargestellt. Es zeigen:

  • Fig. 1 eine erfindungsgemässe Vorrichtung zum dosierten Beschicken einer Stranggiesskokille mit Giesspulver im Längsschnitt,
  • Fig. 2 diese Vorrichtung in Draufsicht, und
  • Fig. 3 einen Querschnitt durch die Stauwand im Bereich der Abwurfkante in einem grösseren Massstab.
. The subject matter of the invention is shown in the drawing, for example. Show it:
  • 1 shows a device according to the invention for metering a continuous casting mold with casting powder in longitudinal section,
  • Fig. 2 shows this device in plan view, and
  • Fig. 3 shows a cross section through the dam wall in the region of the discharge edge on a larger scale.

Wie Fig. 1 und 2 entnommen werden kann, besteht die dargestellte Vorrichtung zum dosierten Beschicken einer Stranggiesskokille mit Giesspulver im wesentlichen aus einem Schwingförderer 1, der über Federelemente 2 abgestützt ist und mit einem Schwingantrieb 3 in Verbindung steht. Aufgabeseitig ist dieser Schwingförderer 1 an einen Vorratsbehälter 4 für das Giesspulver angeschlossen, wobei über einen angedeuteten Schieber 5 die Austragsmenge gesteuert werden kann.As can be seen from FIGS. 1 and 2, the device shown for metering a continuous casting mold with casting powder consists essentially of an oscillating conveyor 1 which is supported by spring elements 2 and is connected to an oscillating drive 3. On the feed side, this vibratory conveyor 1 is connected to a storage container 4 for the casting powder, it being possible for the discharge quantity to be controlled via an indicated slide 5.

Am Austragsende weist der Schwingförderer 1 eine Abwurfkante 6 auf, die in ihrem Verlauf an die Querschnittsform einer Kokille angepasst ist, die in Fig. 2 in ihrer Umrissform durch die strichpunktierte Linie 7 angedeutet ist. Darüber hinaus kann dieser Figur die Lage des Tauchrohres 8 für die Zufuhr der Schmelze entnommen werden. Die Abwurfkante 6 ist hinsichtlich ihres Verlaufes so ausgebildet, dass das Giesspulver angenähert mittig zwischen der Umfangswand der Kokille 7 und dem Tauchrohr in die Kokille eingebracht wird und sich folglich gleichmässig auf der Badoberfläche verteilen kann. Voraussetzung hiefür ist allerdings, dass das Giesspulver dosiert über die Länge der Abwurfkante fliesst.At the discharge end, the vibratory conveyor 1 has a discharge edge 6, the course of which is adapted to the cross-sectional shape of a mold, the outline shape of which is indicated in FIG. 2 by the dash-dotted line 7. In addition, the position of the dip tube 8 for the supply of the melt can be seen from this figure. With regard to its course, the discharge edge 6 is designed such that the casting powder is introduced into the mold approximately centrally between the circumferential wall of the mold 7 and the dip tube and can consequently be distributed uniformly on the bath surface. The prerequisite for this, however, is that the casting powder flows in a metered manner over the length of the discharge edge.

Um dies sicherzustellen, trägt der Schwingförderer 1 entlang der Abwurfkante 6 eine Stauwand 9 mit einem Dosierspalt 10, der entsprechend dem Ausführungsbeispiel durch vertikale Stege 11 kammartig unterteilt ist. Aus Fig. 1 und 3 erkennt man deutlich, dass die Höhe des Dosierspaltes über die Abwurfkantenlänge unterschiedlich ist, und zwar nimmt die Höhe des Dosierspaltes 10 mit zunehmender Stauhöhe des Giesspulvers ab, wie dies an Hand der strichliert eingezeichneten Schütthöhe 12 abgelesen werden kann, die sich auf Grund der Giesspulverförderung gegen die Stauwand 9 hin ergibt. Die Höhe des Dosierspaltes ist aber nicht nur von der jeweiligen Schütthöhe bzw. der Schütthöhenverteilung abhängig, sondern auch von der Neigung der Abwurfkante 6 gegenüber der Förderrichtung des Schwingförderers 1. Die in Förderrichtung wirkende Förderkraft ergibt selbstverständlich im Bereich einer quer zur Förderrichtung verlaufenden Stauwand einen grösseren Förderdruck in Ausflussrichtung auf das Giesspulver als im Bereich einer dazu in einem spitzen Winkel geneigten Stauwand. Aus diesem Grunde wird im Bereich der Stauwandabschnitte, die in Förderrichtung liegen, vor allem der Staudruck und die auflastenden Giesspulverschichten mit ihrem Gewicht wirksam, um das Giesspulver durch den Dosierspalt 10 zu drücken, was durch die unterschiedliche Spalthöhe Berücksichtigung findet.In order to ensure this, the vibrating conveyor 1 carries along the discharge edge 6 a baffle 9 with a metering gap 10 which is divided like a comb by vertical webs 11 according to the embodiment. 1 and 3 it can clearly be seen that the height of the metering gap is different over the length of the discharge edge, namely the height of the metering gap 10 decreases with increasing accumulation height of the casting powder, as can be seen on the basis of the dashed height of the dumping height 12, which arises due to the conveyance of casting powder against the dam 9. The height of the metering gap is not only dependent on the respective bed height or the bed height distribution, but also on the inclination of the discharge edge 6 with respect to the conveying direction of the vibratory conveyor 1. The conveying force acting in the conveying direction naturally results in a larger in the area of a baffle wall running transversely to the conveying direction Delivery pressure in the outflow direction on the casting powder than in the area of a dam wall inclined at an acute angle. For this reason, in the area of the baffle wall sections, which are in the conveying direction, especially the dynamic pressure and the load-bearing casting spool layers are effective with their weight in order to press the casting powder through the metering gap 10, which is taken into account by the different gap height.

Damit eine gewünschte Verteilung der Abwurfmenge entlang der gesamten Abwurfkante sichergestellt werden kann, ist es notwendig, eine gleichbleibende Verteilung des Giesspulvers über die Breite des Schwingförderers 1 zu gewährleisten. Dies kann in einfacher Weise durch eine vor dem Austragsende angeordnete, zusätzliche Stauwand 13 erzwungen werden, die einen Dosierspalt 14 aufweist, dessen Spaltweite vorteilhaft einstellbar sein soll.So that a desired distribution of the discharge quantity along the entire discharge edge can be ensured, it is necessary to ensure a constant distribution of the casting powder over the width of the vibratory conveyor 1. This can be enforced in a simple manner by an additional baffle 13 arranged in front of the discharge end, which has a metering gap 14, the gap width of which should advantageously be adjustable.

Sind, wie dies in Fig. 3 dargestellt ist, an der Stauwand 9 der Höhe nach verstellbareZungen 15 gelagert, die gegen den Dosierspalt 10 vorragen, so kann die Spaltweite zumindest bereichsweise eingestellt werden, so dass eine Anpassung an sehr unterschiedliche Verhältnisse möglich wird. Im einfachsten Fall können die Zungen 15 mittels einer Klemmschraube 16 in einem Langloch 17 der Stauwand 9 festgelegt werden, wobei das Verstellen durch ein Lösen der Klemmschrauben erfolgt.If, as shown in FIG. 3, height-adjustable tongues 15, which protrude against the metering gap 10, are mounted on the baffle wall 9, the gap width can be adjusted at least in some areas, so that an adaptation to very different conditions is possible. In the simplest case, the tongues 15 can be fixed in a slot 17 of the baffle 9 by means of a clamping screw 16, the adjustment being carried out by loosening the clamping screws.

Claims (4)

1. Apparatus for supplying a mould (7) for continuous casting with a powder at a controlled rate, comprising a conveyor, which is adapted to be connected to a supply bin (4) for the powder and which has at its discharge end a discharge edge (6), which has a configuration depending on the cross-sectional shape of the mould (7), characterized in that the conveyor consists of a vibratory conveyor (1), which along the discharge edge (6) carries a retaining wall (9) having a metering gap (10), which varies in height along the discharge edge (6) in dependence on the distribution along the metering gap (10) of the conveying pressure acting on the powder in the discharge direction.
2. Apparatus according to claim 1, characterized in that the vibratory conveyor (1) is provided with at least one additional retaining wall (13), which in the direction of conveyance precedes the discharge end and extends transversely to the direction of conveyance and has a metering gap (14) of constant height.
3. Apparatus according to claim 1 or 2, characterized in that the metering gap (10) is divided like a comb by vertical webs (11) adjacent to the discharge edge (6).
4. Apparatus according to any of claims 1 to 3, characterized in that the height of the metering gap (10) adjacent to the discharge edge (6) is adjustable, e.g. by tongues (15) which are adjustably mounted on the retaining wall (9).
EP82890103A 1981-10-05 1982-07-15 Device for the dosed charging of a continuous-casting mould with casting flux Expired EP0076790B1 (en)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
AT0424681A AT370654B (en) 1981-10-05 1981-10-05 DEVICE FOR THE DOSED CHARGING OF A CONTINUOUS CHOCOLATE WITH CASTING POWDER
AT4246/81 1981-10-05

Publications (2)

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EP0076790A1 EP0076790A1 (en) 1983-04-13
EP0076790B1 true EP0076790B1 (en) 1984-12-05

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EP82890103A Expired EP0076790B1 (en) 1981-10-05 1982-07-15 Device for the dosed charging of a continuous-casting mould with casting flux

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US (1) US4502615A (en)
EP (1) EP0076790B1 (en)
JP (1) JPS5870954A (en)
AT (1) AT370654B (en)
CA (1) CA1196765A (en)
DE (1) DE3261463D1 (en)

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DE59409600D1 (en) * 1993-07-31 2001-01-11 Hauni Maschinenbau Ag Conveyor device for producing a tobacco monolayer
US5580171A (en) * 1995-07-24 1996-12-03 Lim; John C. Solids mixing, storing and conveying system for use with a furnace for single crystal silicon production
AT403555B (en) * 1996-04-16 1998-03-25 Voest Alpine Stahl Donawitz Method and apparatus for feeding casting powder onto the melt surface during continuous casting
US6116409A (en) * 1998-02-19 2000-09-12 Eastman Kodak Company Conveyor for uniformly distributing parts
DE19835530A1 (en) * 1998-08-06 2000-02-10 Rossendorf Forschzent Vibration-conveyer assembly for granular bulk solid has string of spheres straddling release zone ensuring removal of all solids
US6197114B1 (en) 1998-11-05 2001-03-06 Material Sciences Corporation Power feeding apparatus having an adjustable feed width
WO2004045788A1 (en) * 2002-11-15 2004-06-03 Matsumoto Industry Co., Ltd. Discharge device for worked material
US8444013B2 (en) * 2009-08-03 2013-05-21 Axis Automation, Llc Food topping device including a vibration device and adjustable discharge pan and screen assembly
CN102862787A (en) * 2012-09-29 2013-01-09 新乡市飞龙冶金机械有限公司 Automatic control vibratory distributor
CN102862786B (en) * 2012-09-29 2014-12-10 新乡市飞龙冶金机械有限公司 Automatic control vibratory distributor
CN110153385B (en) * 2019-05-29 2021-09-14 湖南华菱涟钢特种新材料有限公司 Slag adding device
IT202000004066A1 (en) * 2020-02-27 2021-08-27 Ergolines Lab S R L DISTRIBUTION DEVICE, SYSTEM, METHOD FOR THE DISTRIBUTION OF POWDERS IN THE INGOT MOLD
CN112278747B (en) * 2020-10-15 2022-05-10 河北华丰能源科技发展有限公司 Connection structure suitable for feed bin and vibrating feeder
AT524882A1 (en) * 2021-04-09 2022-10-15 Neuson Hydrotec Gmbh DISCHARGE DEVICE FOR BULK CONTAINERS

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Also Published As

Publication number Publication date
AT370654B (en) 1983-04-25
US4502615A (en) 1985-03-05
ATA424681A (en) 1982-09-15
JPS5870954A (en) 1983-04-27
EP0076790A1 (en) 1983-04-13
CA1196765A (en) 1985-11-19
DE3261463D1 (en) 1985-01-17

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