EP0218855A1 - Method and apparatus for continuous casting - Google Patents

Method and apparatus for continuous casting Download PDF

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Publication number
EP0218855A1
EP0218855A1 EP86111710A EP86111710A EP0218855A1 EP 0218855 A1 EP0218855 A1 EP 0218855A1 EP 86111710 A EP86111710 A EP 86111710A EP 86111710 A EP86111710 A EP 86111710A EP 0218855 A1 EP0218855 A1 EP 0218855A1
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EP
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Prior art keywords
mold
continuous casting
gas
overhang
mould
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EP86111710A
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German (de)
French (fr)
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EP0218855B1 (en
Inventor
Wolfgang Dr. Dipl.-Ing. Schneider
Kurt Krämer
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Vereinigte Aluminium Werke AG
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Vereinigte Aluminium Werke AG
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Priority to AT86111710T priority Critical patent/ATE47544T1/en
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    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B22—CASTING; POWDER METALLURGY
    • B22D—CASTING OF METALS; CASTING OF OTHER SUBSTANCES BY THE SAME PROCESSES OR DEVICES
    • B22D11/00—Continuous casting of metals, i.e. casting in indefinite lengths
    • B22D11/07—Lubricating the moulds
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B22—CASTING; POWDER METALLURGY
    • B22D—CASTING OF METALS; CASTING OF OTHER SUBSTANCES BY THE SAME PROCESSES OR DEVICES
    • B22D11/00—Continuous casting of metals, i.e. casting in indefinite lengths
    • B22D11/04—Continuous casting of metals, i.e. casting in indefinite lengths into open-ended moulds
    • B22D11/0401—Moulds provided with a feed head

Definitions

  • the invention relates to a process for continuous casting in a continuous casting mold with a mold attachment, the inner wall of which projects to form an overhang over the inner wall of the continuous casting mold, in which the inner wall of the continuous casting mold is cooled and lubricated, a gas under pressure such as air, nitrogen or inert gas is introduced into the continuous casting mold at the transition of the mold attachment into the mold cavity.
  • a gas under pressure such as air, nitrogen or inert gas
  • a method and a device of the type mentioned is known from DE-OS 27 34 388 (Showa).
  • the known method leads to reasonably smooth bar surfaces only under favorable conditions.
  • monitoring and regulating the pressure of gas and lubricating oil flow rate is required, as well as ongoing temperature measurement to set the casting parameters. In operation, this often leads to difficulties which are exacerbated by fluctuations in the metal level and changes in the metallostatic pressure during the casting process.
  • the object of the present invention is to avoid the disadvantages mentioned at the outset and to develop a method and a device for continuous casting, with which smooth and clean ingot surfaces can be achieved independently of the respective casting conditions.
  • the special surface quality is characterized by the prevention of glue points and reduction of surface segregation to a level which enables further processing without turning off the bar.
  • the mold tread below the overhang is absolutely smooth and free of bores, steps or grooves.
  • a laminar flow parallel to the mold running surface must be maintained so that the metal flowing in does not come into contact with the mold wall.
  • This effect is reinforced by the fact that a minimum distance of 2-5 mm is provided between the start-up block and the mold running surface and a negative pressure is generated in this intermediate space, preferably by the cooling water blown out at the mold outlet end (water jet pump effect).
  • FIG. 1 shows a cross section through the mold according to the invention.
  • the mold attachment which consists of a hot head 2 and a gas guide block 3 with a gas channel 13.
  • the mold 1 there is a bore 4 for the separating and / or lubricant and a channel 5 for water cooling.
  • An annular gap 6 is formed between the mold 1, the hot head 2 and the gas guide block 3, which runs parallel to the running surface 7 at least in the vicinity of the outlet opening. It is important that there are no shoulders, bores or grooves on the tread and in the exit area of the ring channel, so that an approximately laminar flow of the mixture of separating and / or lubricant and gas is made possible.
  • the gas is blown through the annular channel 6 into the space below the overhang 8 of the meniscal cavity 9.
  • the vacuum there generated by the water jet emerging from channel 5, provides for the formation of an annular gas / oil veil which completely shields the mold wall 7 from the liquid metal.
  • the method according to the invention is preferably applied to crack-sensitive alloy groups.
  • an embodiment for strands with a 10 inch diameter is given, the ratio of separating agent and gas being 3: 1000.
  • FIGS. 2 to 5 show further embodiments of the invention.
  • the mold attachment 22 in FIG. 2 is made in one piece.
  • the bore for the gas channel 14 is located in the mold attachment 22 and opens into a wide antechamber 15 between the overhang 8 and the mold running surface 7. This is where the mixture formation with the separating and / or lubricant that takes place from the bore 4 in the mold 1 takes place.
  • water 11 is blown out of the channel 5.
  • FIG. 3 A further variant of the device according to the invention is shown in FIG. 3.
  • the mold attachment is divided horizontally into two partial areas 22a, 22b.
  • the gas line 16 also extends in the upper part 22a in the direction of the strand withdrawal and is only interrupted by a chamber 22c for gas distribution.
  • the mold 1 has a support wall 12 for the secure positioning of the mold attachment 22a, b.
  • the remaining parts, such as lubricant bore 4 and anteroom 15 correspond to the embodiment according to FIG. 2.
  • a differently shaped gas guide block in the form of an insert 17 is provided between the mold 1 and the hot head 2.
  • an insert 18 is arranged between the mold 1 and the hot head 2 in a corresponding manner.
  • the gas line 19 is guided horizontally through the mold 1 and that and the insert part 18 into an antechamber 20, from which the gas reaches the annular gap 6.
  • the mixture with the lubricant, which is supplied via bore 4 is variable between 2 and 10 mm before the outlet of the annular gap opening. All other features correspond to the parts described in connection with the previous figures.

Abstract

1. Method for continuous casting in a continuous-casting mould having a mould cap (22) whose inner wall, while forming an overhang (8), protrudes beyond the inner wall of the continuous-casting mould, in which method the inner wall of the continuous-casting mould is cooled and lubricated, a gas under pressure, such as air, nitrogen or inert gas being fed at the overhang (8) of the mould cap (22) together with lubricant into the shaped hollow space into the continuous-casting mould, and a dummy block being used during casting, characterized in that a vacuum is produced in the gap between dummy block and mould running surface (7), and in that the parting compound and/or lubricant and the gas, before entry into the shaped hollow space of the continuous-casting mould (1), is mixed in a volumetric ration of 1-4:1000 while forming a gas/oil mist, and this mixture, starting at the overhang of the mould cap (22), is blown out in the discharge direction parallel to and along the mould running surface (7), a laminar flow being maintained.

Description

Die Erfindung betrifft ein Verfahren zum Stranggießen in einer Stranggießkokille mit einem Kokillenaufsatz, dessen Innenwandung unter Bildung eines Überhanges über die Innen­wandung der Stranggießkokille vorsteht, bei dem die Innen­wandung der Stranggießkokille gekühlt und geschmiert wird, wobei ein unter Druck stehendes Gas wie Luft, Stickstoff oder Inertgas am Übergang des Kokillenaufsatzes in den Formhohlraum in die Stranggießkokille eingeleitet wird.The invention relates to a process for continuous casting in a continuous casting mold with a mold attachment, the inner wall of which projects to form an overhang over the inner wall of the continuous casting mold, in which the inner wall of the continuous casting mold is cooled and lubricated, a gas under pressure such as air, nitrogen or inert gas is introduced into the continuous casting mold at the transition of the mold attachment into the mold cavity.

Ein Verfahren und eine Vorrichtung der eingangs genannten Art ist aus der DE-OS 27 34 388 (Showa) bekannt. das bekann­te Verfahren führt nur unter günstigen Voraussetzungen zu einigermaßen glatten Barrenoberflächen. Beim Angießen ist beispielsweise eine Überwachung und Regelung des Druckes von Gas und Schmieröl-Strömungsmenge erforderlich, sowie eine laufende Temperaturmessung zur Einstellung der Gieß­parameter. Dies führt im Betriebsfalle häufig zu Schwierig­keiten, die durch Schwankungen des Metallstandes und Ände­rungen des metallostatischen Druckes im laufenden Gießver­fahren noch verstärkt werden.A method and a device of the type mentioned is known from DE-OS 27 34 388 (Showa). the known method leads to reasonably smooth bar surfaces only under favorable conditions. When casting, for example, monitoring and regulating the pressure of gas and lubricating oil flow rate is required, as well as ongoing temperature measurement to set the casting parameters. In operation, this often leads to difficulties which are exacerbated by fluctuations in the metal level and changes in the metallostatic pressure during the casting process.

Ferner hat sich gezeigt, daß mit dem Verfahren nach DE-OS 27 34 388 bleihaltige Legierungen mit Gehalten bis zu 2,5 % Blei nicht zufriedenstellend zu vergießen sind. Diese Legierungen sind aber für die Herstellung von spanend zu bearbeitenden Stranggußprodukten von besonderer Bedeutung.Furthermore, it has been found that lead-containing alloys with contents of up to 2.5% lead cannot be cast satisfactorily with the process according to DE-OS 27 34 388. However, these alloys are of particular importance for the production of continuously cast products to be machined.

Aufgabe der vorliegenden Erfindung ist es, die eingangs ge­nannten Nachteile zu vermeiden und ein Verfahren und eine Vorrichtung zum Stranggießen zu entwickeln, womit unabhänig von den jeweilige- Gießbedingungen glatte und saubere Barren­oberflächen erzielt werden können. Die besondere Oberflächen­qualität zeichnet sich durch Verhinderung von Klebstellen und Verringerung der Oberflächenseigerungen auf ein Maß aus, welches die Weiterverarbeitung ohne Abdrehen des Barrens ermöglicht.The object of the present invention is to avoid the disadvantages mentioned at the outset and to develop a method and a device for continuous casting, with which smooth and clean ingot surfaces can be achieved independently of the respective casting conditions. The special surface quality is characterized by the prevention of glue points and reduction of surface segregation to a level which enables further processing without turning off the bar.

Erfindungsgemäß wird diese Aufgabe durch die in den Patent­ansprüchen angegebenen Merkmale gelöst. Es hat sich gezeigt, daß durch die Anordnung eines Ringspaltes in Richtung der Kokillenlauffläche und durch Vormischung von Trenn- und/oder Schmiermittel und Gas eine Nachregulierung der Gießparameter, insbesondere der Gas- und Schmiermittelmenge auch bei schwan­kendem Metallstand nicht erforderlich ist. Versuche mit gas­förmigen Schmiermitteln wie Acetylen, Butadin, Propan und Trichloräthylen haben gezeigt, daß bei den in der Kokille herrschenden Bedingungen (Druck und Temperatur) eine ein­wandfreie Trennwirkung durch Zersetzung der gasförmigen Schmiermittel nicht möglich ist. Bei Zugabe von konventio­nellen Schmiermitteln ohne Gas parallel zur Kokillenachse treten in der Startphase Verbrennungen des Schmiermittels auf und anschließend Unterdosierung. Deshalb ist die Her­stellung eines optimalen Schmiermittelzustandes nur durch Schmiermitteldosierung nicht möglich.According to the invention, this object is achieved by the features specified in the patent claims. It has been shown that by arranging an annular gap in the direction of the mold running surface and by premixing the release agent and / or lubricant and gas, it is not necessary to readjust the casting parameters, in particular the amount of gas and lubricant, even when the metal level fluctuates. Experiments with gaseous lubricants such as acetylene, butadine, propane and trichlorethylene have shown that, under the conditions (pressure and temperature) in the mold, a perfect separation effect by decomposing the gaseous lubricants is not possible. If conventional lubricants are added without gas parallel to the mold axis, the lubricant burns in the start phase and then underdosing. For this reason, it is only possible to achieve an optimal lubricant condition by metering the lubricant.

Bei dem erfindungsgemäßen Verfahren hat es sich als wichtig herausgestellt, daß die Kokillenlauffläche unterhalb des Überhanges absolut glatt und frei von Bohrungen, Stufen oder Nuten ist. Insbesondere beim Angießen muß eine laminare Strömung parallel zur Kokillenlauffläche aufrechterhalten werden, damit das einfließende Metall nicht mit der Kokillen­wand in Berührung kommt. Dieser Effekt wird dadurch ver­stärkt, daß zwischen Anfahrblock und Kokillenlauffläche ein Mindestabstand von 2-5 mm vorgesehen ist und in diesem Zwischenraum ein Unterdruck, vorzugsweise durch das am Ko­killenaustrittsende ausgeblasene Kühlwasser (Wasserstrahl-­Pumpen-Effekt) erzeugt wird.In the method according to the invention, it has been found important that the mold tread below the overhang is absolutely smooth and free of bores, steps or grooves. In particular when casting, a laminar flow parallel to the mold running surface must be maintained so that the metal flowing in does not come into contact with the mold wall. This effect is reinforced by the fact that a minimum distance of 2-5 mm is provided between the start-up block and the mold running surface and a negative pressure is generated in this intermediate space, preferably by the cooling water blown out at the mold outlet end (water jet pump effect).

Im folgenden wird die Erfindung anhand eines Ausführungs­beispieles näher erläutert.
In Fig. 1 ist ein Querschnitt durch die erfindungsgemäße Kokille gezeigt. Man erkennt die Kokille 1 mit dem Kokil­lenaufsatzt der aus einem Heißkopf 2 und einem Gasführungs­block 3 mit Gaskanal 13 besteht. In der Kokille 1 ist eine Bohrung 4 für das Trenn- und/oder Schmiermittel und einen Kanal 5 für die Wasserkühlung enthalten. Zwischen Kokille 1, Heiß­kopf 2 und Gasführungsblock 3 wird ein Ringspalt 6 gebil­det, der zumindest in der Nähe der Austrittsöffnung parallel und in Fortsetzung zur Lauffläche 7 verläuft. Wichtig ist hierbei, daß keinerlei Absätze, Bohrungen oder Nuten an der Lauffläche und im Austrittsbereich des Ringkanals vor­handen sind, damit eine annähernd laminare Strömung des Gemisches aus Trenn- und/oder Schmiermittel und Gas ermög­licht wird.The invention is explained in more detail below using an exemplary embodiment.
1 shows a cross section through the mold according to the invention. One can see the mold 1 with the mold attachment which consists of a hot head 2 and a gas guide block 3 with a gas channel 13. In the mold 1 there is a bore 4 for the separating and / or lubricant and a channel 5 for water cooling. An annular gap 6 is formed between the mold 1, the hot head 2 and the gas guide block 3, which runs parallel to the running surface 7 at least in the vicinity of the outlet opening. It is important that there are no shoulders, bores or grooves on the tread and in the exit area of the ring channel, so that an approximately laminar flow of the mixture of separating and / or lubricant and gas is made possible.

Im Betriebsfalle wird durch den Ringkanal 6 das Gas in den Raum unterhalb des Überhanges 8 dem Menikushohlraum 9 ein­geblasen. Dabei reißt das Gas an der Schmiermittelzufüh­rung (Bohrung 4) Teile des flüssigen Trenn- oder Schmier­mittels mit, z. B. Öl. Es bilden sich Ga/Öl-Nebel (Emulsi­onen), die in laminare Strömung unterhalb des Überhanges 8 in Abzugsrichtung und parallel zur Kokillenlauffläche aus­treten und bis in den Zwischenraum von Kokille 1 und dem Anfahrblock reichen. Der dort wirksame Unterdruck, er­zeugt durch den aus Kanal 5 austretenden Wasserstrahl, sorgt für Ausbildung eines ringförmigen Gas/Öl-Schleiers, der die Kokillenwand 7 vollständig gegenüber dem flüssigen Metall abschirmt.In operation, the gas is blown through the annular channel 6 into the space below the overhang 8 of the meniscal cavity 9. The gas tears at the lubricant supply (hole 4) with parts of the liquid release agent or lubricant, e.g. B. Oil. Ga / oil mist (emulsions) form, which emerge in laminar flow below the overhang 8 in the withdrawal direction and parallel to the mold running surface and extend into the space between mold 1 and the start-up block. The vacuum there, generated by the water jet emerging from channel 5, provides for the formation of an annular gas / oil veil which completely shields the mold wall 7 from the liquid metal.

In zahlreichen Versuchen hat sich gezeigt, daß die erfin­dungsgemäße Zugabe eines Gas/Öl-Gemisches auch bei schwan­kendem Metallstand nicht durch Veränderung der Pumpendrücke oder Fördermengen geregelt werden muß. Offenbar ist die kombinierte Anwendung von Gas/Öl-Schleier und Saugwirkung entlang der Lauffläche so stark, daß auch bei Änderung des metallostatischen Druckes stets eine Pufferwirkung zwischen Metall und Lauffläche erhalten bleibt.Numerous tests have shown that the addition of a gas / oil mixture according to the invention does not have to be regulated by changing the pump pressures or delivery rates, even when the metal level fluctuates. Apparently, the combined use of gas / oil veil and suction along the tread is so strong that even when the metallostatic pressure always maintains a buffer effect between the metal and the tread.

Das erfindungsgemäße Verfahren wird vorzugsweise auf riß­empfindliche Legierungsgruppen angewendet. Im folgenden wird ein Ausführungsbeispiel für Stränge mit 10 Zoll Durch­messer gegeben, wobei das Verhältnis von Trennmittel und Gas bei 3:1000 lag.
AlMg5 Gießgeschwindigkeit 70 mm pro Minute
AlCuMg2 Gießgeschwindigkeit 65 mm pro Minute
AlZnMgCu1,5 Gießgeschwindigkeit 65 mm pro Minute
AlCuMgPb Gießgeschwindigkeit 65 mm pro MinuteThe method according to the invention is preferably applied to crack-sensitive alloy groups. In the following, an embodiment for strands with a 10 inch diameter is given, the ratio of separating agent and gas being 3: 1000.
AlMg5 casting speed 70 mm per minute
AlCuMg2 casting speed 65 mm per minute
AlZnMgCu1.5 casting speed 65 mm per minute
AlCuMgPb casting speed 65 mm per minute

Diese Gießgeschwindigkeiten konnten unmittelbar nach dem An­fahren konstant gehalten werden. Weitere Gießparameter waren nicht nachzuregulieren. Die erhaltenen Barrenoberflächen zeig­ten eine hohe Oberflächenqualität.These casting speeds could be kept constant immediately after starting. No other casting parameters had to be adjusted. The bar surfaces obtained showed a high surface quality.

Weitere Ausführungsformen der Erfindung zeigen die Figu­ren 2 bis 5. Im Vergleich zu Fig. 1 ist der Kokillenaufsatz 22 in Fig. 2 einteilig ausgeführt. Die Bohrung für den Gaskanal 14 befindet sich im Kokillenaufsatz 22 und mündet in einen breiten Vorraum 15 zwischen Überhang 8 und Kokillenlauffläche 7. Hier findet die Gemischbildung mit dem Trenn- und/oder Schmiermittel statt, das aus Bohrung 4 in der Kokille 1 herangeführt wird. Zur Kühlung des Stranges 10 wird Wasser 11 aus dem Kanal 5 ausgeblasen.FIGS. 2 to 5 show further embodiments of the invention. In comparison to FIG. 1, the mold attachment 22 in FIG. 2 is made in one piece. The bore for the gas channel 14 is located in the mold attachment 22 and opens into a wide antechamber 15 between the overhang 8 and the mold running surface 7. This is where the mixture formation with the separating and / or lubricant that takes place from the bore 4 in the mold 1 takes place. To cool the strand 10, water 11 is blown out of the channel 5.

Eine weitere Variante der erfindungsgemäßen Vorrichtung zeigt Fig. 3. Hier ist der Kokillenaufsatz horizontal geteilt in zwei Teilflächen 22a,22b. Die Gasleitung 16 verläuft auch im oberen Teil 22a in Strangabzugsrichtung und wird nur durch eine Kammer 22c zur Gasverteilung unterbrochen. Die Kokille 1 weist eine Stützwand 12 zur sicheren Positionierung des Ko­killenaufsatzes 22a,b auf. Die übrigen Teile, wie Schmier­mittelbohrung 4 und Vorraum 15 entsprechen der Ausführung nach Fig. 2.A further variant of the device according to the invention is shown in FIG. 3. Here, the mold attachment is divided horizontally into two partial areas 22a, 22b. The gas line 16 also extends in the upper part 22a in the direction of the strand withdrawal and is only interrupted by a chamber 22c for gas distribution. The mold 1 has a support wall 12 for the secure positioning of the mold attachment 22a, b. The remaining parts, such as lubricant bore 4 and anteroom 15 correspond to the embodiment according to FIG. 2.

In Fig. 4 ist zwischen der Kokille 1 und dem Heißkopf 2 ein anders geformter Gasführungsblock in Form eines Ein­satzes 17 vorgesehen. In Fig. 5 ist in entsprechender Weise ein Einsatzteil 18 zwischen der Kokille 1 und dem Heißkopf 2 angeordnet. Im Unterschied zu Fig. 4 wird bei Fig. 5 die Gasleitung 19 horizontal durch die Kokille 1 und das und das Einsatzteil 18 in einen Vorraum 20 geführt, von dem aus das Gas in den Ringspalt 6 gelangt. Die Mischung mit dem Schmiermittel, das über Bohrung 4 zugeführt wird, erfolgt variabel zwischen 2 und 10 mm vor Austrittsöffnung der Ringspaltmündung. Alle übrigen Merkmale entsprechen den im Zusammenhang mit den vorhergehenden Figuren beschrie­benen Teilen.In Fig. 4, a differently shaped gas guide block in the form of an insert 17 is provided between the mold 1 and the hot head 2. In Fig. 5, an insert 18 is arranged between the mold 1 and the hot head 2 in a corresponding manner. In contrast to FIG. 4, in FIG. 5 the gas line 19 is guided horizontally through the mold 1 and that and the insert part 18 into an antechamber 20, from which the gas reaches the annular gap 6. The mixture with the lubricant, which is supplied via bore 4, is variable between 2 and 10 mm before the outlet of the annular gap opening. All other features correspond to the parts described in connection with the previous figures.

Claims (9)

1. Verfahren zum Stranggießen in einer Stranggießkokille mit einem Kokillenaufsatz, dessen Innenwandung unter Bildung eines Überhanges über die Innenwandung der Stranggießkokille vorsteht, bei dem die Innenwandung der Stranggießkokille gekühlt und geschmiert wird, wo­bei ein unter Druck stehendes Gas wie Luft, Stickstoff oder Inertgas am Übergang des Kokillenaufsatzes in den Formhohlraum in die Stranggießkokille eingeleitet wird, dadurch gekennzeichnet, daß das Trenn- und/oder Schmier­mittel und das Gas vor dem Eintreten in den Formhohlraum der Stranggießkokille in einem Volumen-Verhältnis von 1-4:1000 vermischt wird und diese Mischung, ausgehend vom Überhang des Kokillenaufsatzes in Abzugsrichtung parallel zur und entlang der Kokillenlauffläche ausge­blasen wird.1. A process for continuous casting in a continuous casting mold with a mold attachment, the inner wall of which protrudes to form an overhang over the inner wall of the continuous casting mold, in which the inner wall of the continuous casting mold is cooled and lubricated, with a pressurized gas such as air, nitrogen or inert gas at the transition of the mold attachment is introduced into the mold cavity in the continuous casting mold, characterized in that the separating and / or lubricant and the gas are mixed in a volume ratio of 1-4: 1000 before entering the mold cavity of the continuous casting mold, and this mixture, is blown out parallel to and along the mold running surface, starting from the overhang of the mold attachment in the withdrawal direction. 2. Verfahren nach Anspruch 1, dadurch gekennzeichnet, daß im Spalt zwischen Anfahrblock und Kokillenlauffläche ein Unterdruck erzeugt wird.2. The method according to claim 1, characterized in that a negative pressure is generated in the gap between the starting block and the mold running surface. 3. Verfahren nach einem der vorhergehenden Ansprüche, dadurch gekennzeichnet, daß beim Angießen und Stranggießen mit konstanten Mengen für Trenn- und/oder Schmiermittel sowie für Gas gefahren wird.3. The method according to any one of the preceding claims, characterized in that the casting and continuous casting is carried out with constant amounts for separating agents and / or lubricants and for gas. 4. Vorrichtung zur Durchführung des Verfahrens zum Strang­gießen nach einem der vorhergehenden Ansprüche, dadurch gekennzeichnet, daß in einem auf der Kokille (1) befind­lichen Aufsatz (22) kanalartige Durchtrittsöffnungen an­geordnet sind, die sich - ausgehend vom Meniskushohlraum (9) parallel und entlang der Abzugsrichtung des Stranges er­strecken.4. Device for carrying out the method for continuous casting according to one of the preceding claims, characterized in that in an on the mold (1) located attachment (22) channel-like passage openings are arranged, which - starting from the meniscus cavity (9) parallel and along the Extend the withdrawal direction of the strand. 5.Vorrichtung zur Durchführung des Verfahrens nach einem der vorhergehenden Ansprüche, dadurch gekennzeichnet, daß im Überhang (8) des Kokillenaufsatzes (22) ein Ringspalt (6) angeordnet ist, dessen Wandungen zumindest im Bereich der Austrittsöffnung im wesentlichen parallel zur Abzugsrich­tung und entlang der Kokillenlauffläche (7) ausgerichtet sind.5.The device for carrying out the method according to any one of the preceding claims, characterized in that an annular gap (6) is arranged in the overhang (8) of the mold attachment (22), the walls of which, at least in the region of the outlet opening, essentially parallel to the withdrawal direction and along the Chill mold surface (7) are aligned. 6. Vorrichtung nach Anspruch 5, dadurch gkennzeichnet, daß die Mündung des Ringspaltes (6) bis zur Austrittsöffnung 10-30 mm parallel zur Kokillenachse geführt ist.6. The device according to claim 5, characterized in that the mouth of the annular gap (6) up to the outlet opening is guided 10-30 mm parallel to the mold axis. 7. Vorrichtung nach einem der vorhergehenden Ansprüche, da­durch gekennzeichnet, daß die Zusammenführung von Trenn- und/oder Schmiermittel und Gas im Bereich von 2-10 mm vor der Austrittsöffnung der Ringspaltmündung (21) erfolgt.7. Device according to one of the preceding claims, characterized in that the separation and / or lubricant and gas are brought together in the range of 2-10 mm in front of the outlet opening of the annular gap mouth (21). 8. Vorrichtung nach Anspruch 7, dadurch gekennzeichnet, daß die Kokillenlauffläche (7) hinter dem Überhang (8) glatt und allseitig geschlossen ist.8. The device according to claim 7, characterized in that the mold tread (7) behind the overhang (8) is smooth and closed on all sides. 9. Vorrichtung nach einem der vorhergehenden Ansprüche, da­durch gekennzeichnet, daß zwischen Kokillenlauffläche (7) und Anfahrblock ein Spalt von 2-5 mm vorhanden ist, und daß der Anfahrblock am oberen Rand eine umlaufende, erhöhte Kante aufweist.9. Device according to one of the preceding claims, characterized in that there is a gap of 2-5 mm between the mold tread (7) and the starting block, and that the starting block has a circumferential, raised edge at the upper edge.
EP86111710A 1985-09-20 1986-08-23 Method and apparatus for continuous casting Expired EP0218855B1 (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
AT86111710T ATE47544T1 (en) 1985-09-20 1986-08-23 METHOD AND DEVICE FOR CONTINUOUS CASTING.

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE3533517 1985-09-20
DE19853533517 DE3533517A1 (en) 1985-09-20 1985-09-20 METHOD AND DEVICE FOR CONTINUOUS CASTING

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EP0218855A1 true EP0218855A1 (en) 1987-04-22
EP0218855B1 EP0218855B1 (en) 1989-10-25

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EP (1) EP0218855B1 (en)
JP (1) JPH06104267B2 (en)
AT (1) ATE47544T1 (en)
AU (1) AU588369B2 (en)
CA (1) CA1282220C (en)
DE (2) DE3533517A1 (en)
NO (1) NO167443C (en)

Cited By (12)

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Publication number Priority date Publication date Assignee Title
EP0449771A1 (en) * 1990-03-26 1991-10-02 Alusuisse-Lonza Services Ag Controlled feeding of molten metal into the moulds of an automatic continuous casting plant
GB2222792B (en) * 1988-09-14 1993-01-20 Showa Denko Kk Method for continuous casting a hollow metallic ingot and apparatus therefor
EP0566865A1 (en) * 1992-04-15 1993-10-27 VAW Aluminium AG Delivery- and distribution system for gas and lubrication-fluid for a continuous casting plant
US5343933A (en) * 1992-02-06 1994-09-06 Vaw Aluminium Ag Process and apparatus for continuously casting metals
FR2747063A1 (en) * 1996-04-05 1997-10-10 Ugine Savoie Sa CONTINUOUS CASTING LINGOTIERE IN VERTICAL METAL LOAD
FR2747060A1 (en) * 1996-04-05 1997-10-10 Ugine Savoie Sa CONTINUOUS CASTING PROCESS FOR METALS AND CASTING PLANT FOR IMPLEMENTING SAME
FR2765126A1 (en) * 1997-06-26 1998-12-31 Lorraine Laminage Casting liquid metal through conduit incorporating two refractory components
FR2766394A1 (en) * 1997-07-23 1999-01-29 Ascometal Sa ADJUSTMENT OF THE HEAD OF A CONTINUOUS CASTING LINGOTIERE IN METAL LOAD
EP0941786A1 (en) * 1998-03-13 1999-09-15 Honda Giken Kogyo Kabushiki Kaisha Process and apparatus for lubricating continuously cast light alloys
WO2002074471A1 (en) * 2001-03-20 2002-09-26 Sms Demag Aktiengesellschaft Continuous casting mould for liquid metals, especially for liquid steel
WO2005042185A1 (en) * 2003-10-17 2005-05-12 Loi Thermprocess Gmbh Method and device for the continuous casting of metal
CN109014090A (en) * 2018-08-31 2018-12-18 苏州铭恒金属科技有限公司 A kind of heat top casting technique of 7 line aluminium alloy pole

Families Citing this family (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPH0741389B2 (en) * 1987-10-02 1995-05-10 日本軽金属株式会社 Semi-continuous casting method and casting equipment for ingots
US5052469A (en) * 1988-09-20 1991-10-01 Showa Denko Kabushiki Kaisha Method for continuous casting of a hollow metallic ingot and apparatus therefor

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GB1143475A (en) * 1965-07-24 1969-02-19 Vaw Ver Aluminium Werke Ag Method of continuously horizontally or vertically casting thin bands, plates or the like
DE1814658A1 (en) * 1967-12-22 1969-07-17 United States Steel Corp Continuous casting mold
US4157728A (en) * 1976-07-29 1979-06-12 Showa Denko Kabushiki Kaisha Process for direct chill casting of metals
GB2129344A (en) * 1982-10-20 1984-05-16 Wagstaff Engineering Inc Direct chill casting

Patent Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB1143475A (en) * 1965-07-24 1969-02-19 Vaw Ver Aluminium Werke Ag Method of continuously horizontally or vertically casting thin bands, plates or the like
DE1814658A1 (en) * 1967-12-22 1969-07-17 United States Steel Corp Continuous casting mold
US4157728A (en) * 1976-07-29 1979-06-12 Showa Denko Kabushiki Kaisha Process for direct chill casting of metals
US4157728B1 (en) * 1976-07-29 1987-06-09
GB2129344A (en) * 1982-10-20 1984-05-16 Wagstaff Engineering Inc Direct chill casting

Cited By (19)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB2222792B (en) * 1988-09-14 1993-01-20 Showa Denko Kk Method for continuous casting a hollow metallic ingot and apparatus therefor
EP0449771A1 (en) * 1990-03-26 1991-10-02 Alusuisse-Lonza Services Ag Controlled feeding of molten metal into the moulds of an automatic continuous casting plant
US5170838A (en) * 1990-03-26 1992-12-15 Alusuisse-Lonza Services Ltd. Program-controlled feeding of molten metal into the dies of an automatic continuous casting plant
US5343933A (en) * 1992-02-06 1994-09-06 Vaw Aluminium Ag Process and apparatus for continuously casting metals
EP0566865A1 (en) * 1992-04-15 1993-10-27 VAW Aluminium AG Delivery- and distribution system for gas and lubrication-fluid for a continuous casting plant
US5320159A (en) * 1992-04-15 1994-06-14 Vaw Aluminum Ag Continuous casting apparatus having gas and mold release agent supply and distribution plate
WO1997037792A1 (en) * 1996-04-05 1997-10-16 Ugine Savoie Ingot mould for the continuous vertical casting of metals
FR2747060A1 (en) * 1996-04-05 1997-10-10 Ugine Savoie Sa CONTINUOUS CASTING PROCESS FOR METALS AND CASTING PLANT FOR IMPLEMENTING SAME
FR2747063A1 (en) * 1996-04-05 1997-10-10 Ugine Savoie Sa CONTINUOUS CASTING LINGOTIERE IN VERTICAL METAL LOAD
WO1997037795A1 (en) * 1996-04-05 1997-10-16 Ugine Savoie Facility and method for the continuous casting of metals
US6109335A (en) * 1996-04-05 2000-08-29 Ugine Savoie Ingot mould for the continuous vertical casting of metals
FR2765126A1 (en) * 1997-06-26 1998-12-31 Lorraine Laminage Casting liquid metal through conduit incorporating two refractory components
FR2766394A1 (en) * 1997-07-23 1999-01-29 Ascometal Sa ADJUSTMENT OF THE HEAD OF A CONTINUOUS CASTING LINGOTIERE IN METAL LOAD
WO1999004918A1 (en) * 1997-07-23 1999-02-04 Ascometal Method and device for continuous metal charge casting
EP0941786A1 (en) * 1998-03-13 1999-09-15 Honda Giken Kogyo Kabushiki Kaisha Process and apparatus for lubricating continuously cast light alloys
US6840303B1 (en) 1998-03-13 2005-01-11 Honda Giken Kogyo Kabushiki Kaisha Process for continuously casting light alloy and apparatus for continuously casting light alloy
WO2002074471A1 (en) * 2001-03-20 2002-09-26 Sms Demag Aktiengesellschaft Continuous casting mould for liquid metals, especially for liquid steel
WO2005042185A1 (en) * 2003-10-17 2005-05-12 Loi Thermprocess Gmbh Method and device for the continuous casting of metal
CN109014090A (en) * 2018-08-31 2018-12-18 苏州铭恒金属科技有限公司 A kind of heat top casting technique of 7 line aluminium alloy pole

Also Published As

Publication number Publication date
NO167443C (en) 1991-11-06
NO863097D0 (en) 1986-07-31
EP0218855B1 (en) 1989-10-25
JPH06104267B2 (en) 1994-12-21
DE3666549D1 (en) 1989-11-30
CA1282220C (en) 1991-04-02
AU6294686A (en) 1987-03-26
AU588369B2 (en) 1989-09-14
NO167443B (en) 1991-07-29
ATE47544T1 (en) 1989-11-15
NO863097L (en) 1987-03-23
JPS6268657A (en) 1987-03-28
DE3533517A1 (en) 1987-04-02

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