EP0485331B1 - Process and installation for electromagnetic casting of aluminium alloyed billets having a fold-free surface - Google Patents

Process and installation for electromagnetic casting of aluminium alloyed billets having a fold-free surface Download PDF

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Publication number
EP0485331B1
EP0485331B1 EP91810822A EP91810822A EP0485331B1 EP 0485331 B1 EP0485331 B1 EP 0485331B1 EP 91810822 A EP91810822 A EP 91810822A EP 91810822 A EP91810822 A EP 91810822A EP 0485331 B1 EP0485331 B1 EP 0485331B1
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European Patent Office
Prior art keywords
oxide
weir
inductor
process according
billet
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EP91810822A
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German (de)
French (fr)
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EP0485331A1 (en
Inventor
Bertrand Carrupt
Maurice Constantin
Michel Ebener
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3A Composites International AG
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Alusuisse Lonza Services Ltd
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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
    • B22D11/01—Continuous casting of metals, i.e. casting in indefinite lengths without moulds, e.g. on molten surfaces
    • B22D11/015—Continuous casting of metals, i.e. casting in indefinite lengths without moulds, e.g. on molten surfaces using magnetic field for conformation, i.e. the metal is not in contact with a mould

Definitions

  • the invention relates to a method for preventing the formation of wrinkles and oxide deposits on the rolling surfaces of a billet made of an aluminum alloy, in particular an aluminum-magnesium alloy, during vertical electromagnetic continuous casting with an essentially rectangular inductor and an oxide weir immersed in the melt head of the billet.
  • An apparatus for performing the method according to the preamble of claim 8 also lies within the scope of the invention.
  • US-A-4'724'896 discloses a device for reducing the surface defects mentioned in the electromagnetic casting of rolled ingots by arranging an oxide weir which is known per se and is immersed in the melt head, also called skim dam in technical jargon.
  • the outer edges of the oxide weir form an angle between 105 and 150 with the metal melt, as a result of which the meniscus radius of the surface of the metal melt in the contact zone with the oxide weir outer edges is greatly reduced.
  • the oxide skin which forms on the melt surface is to tear off at short intervals before the oxide layer has reached the thickness which is critical for the formation of wrinkles and oxide deposition. It has However, it has been shown that even with inclined outer edges of the oxide weir, the surface defects cannot be completely eliminated.
  • the inventor has set itself the goal of providing a method and a suitable device of the type mentioned at the outset with which the formation of wrinkles and oxide deposition on the surface of rolled bars made of aluminum alloys produced by electromagnetic casting can be prevented.
  • the object is achieved according to the invention in that the oxide weir, which extends at least over the long sides of the inductor and is arranged approximately parallel and at a distance from it, is moved horizontally in its longitudinal direction to and fro.
  • the oxide weir can consist of only two parts adjacent to the long sides of the inductor and are missing towards the transverse sides of the inductor. In practice, however, it is advisable to use a frame-shaped oxide weir. The constant movement of the oxide weir prevents the formation of wrinkles and oxide deposits on the rolled surfaces of the ingots by premature tearing and detachment of the oxide skin that forms on the melt surface.
  • a movement cycle should expediently last from 1 to 8 seconds, preferably about 3 seconds, the horizontal displacement of the oxide weir between two end positions being 5 to 15 mm, preferably about 8 mm.
  • the aforementioned premature detachment of the oxide skin on the melt surface can be supported by introducing vibrations into the oxide weir in the direction of strand withdrawal.
  • the suitable vibration frequency is between 50 and 1000 Hz, preferably around 400 to 600 Hz.
  • the optimal acceleration value of the vibration movement is between +/- 20 g and +/- 60 g, where g means the acceleration due to gravity.
  • the appropriate immersion depth of the oxide weir in the molten metal is 5 to 15 mm, preferably about 10 mm.
  • the object is achieved according to the invention in that, in the case of an essentially rectangular inductor and an essentially rectangular oxide weir, this is fixed to a support frame which is coupled on one side to a pneumatic cylinder which is stationary with respect to the inductor and on the other in a position opposite the inductor fixed leadership is guided.
  • At least one vibrator preferably a ball vibrator, is attached to the support frame.
  • the distance between the longitudinal sides of the inductor and the oxide weir lying essentially parallel to one another is expediently between 50 and 100 mm and is preferably approximately 70 to 80 mm.
  • a vertical electromagnetic continuous casting installation 10 has a loop-shaped inductor 12, which is partially covered by a screen 14 for the fine adjustment of the electromagnetic field.
  • An annularly arranged coolant box 16 is used to apply coolant 18 to the surface of the strand or roll ingot 20 emerging from the mold. Via a pouring nozzle 21 the liquid metal is fed to the mold.
  • the strand 20 is continuously lowered by means of a start-up floor 22, which keeps the mold closed until the start of casting.
  • a pneumatic cylinder 30 is mounted, the piston rod 32 is connected to a first suspension 34 a of the support frame 24.
  • a second suspension 34 b of the support frame 24 opposite the first suspension 34 a is supported in a guide 36 mounted on the side of the coolant box 16 diametrically opposite the pneumatic cylinder 30.
  • the distance b between the long sides x1 and x2 of the inductor 12 and the oxide weir 26 is thus 80 mm, the distance c between the transverse sides y1 and y2 90 mm.
  • the support frame 24 with the oxide weir 26 can be moved horizontally in the direction of the long sides x 1 of the inductor 12 back and forth.
  • Ball vibrators 40 are fixed on crossbars 38 of the support frame 24.

Abstract

In the electromagnetic continuous casting of aluminium/magnesium alloy billets, defects in the form of vertical wrinkles and oxide deposits occur on the surface of the billet as a result of the greatly increased oxidation rate at the surface of the melt due to the presence of magnesium in the said melt and, given high requirements of the surface quality of rolled products, these make it necessary to mill the rolled surfaces of the billet. <??>The said surface defects can be avoided by an oxide weir (26) which dips into the molten head (28), extends over at least the longitudinal sides (x1) of the inductor (12), is arranged approximately parallel to and at a distance (b) from the said sides and is moved backwards and forwards horizontally in its longitudinal direction (m). <IMAGE>

Description

Die Erfindung betrifft ein Verfahren zur Verhinderung der Faltenbildung und Oxidablagerung auf den Walzflächen eines Walzbarrens aus einer Aluminiumlegierung, insbesondere einer Aluminium-Magnesium-Legierung, beim vertikalen elektromagnetischen Stranggiessen mit einem im wesentlichen rechteckförmigen Induktor und einem in den Schmelzekopf des Walzbarrens eintauchenden Oxidwehr. Im Rahmen der Erfindung liegt auch eine Vorrichtung zur Durchführung des Verfahrens gemäß Oberbegriff des Anspruchs 8.The invention relates to a method for preventing the formation of wrinkles and oxide deposits on the rolling surfaces of a billet made of an aluminum alloy, in particular an aluminum-magnesium alloy, during vertical electromagnetic continuous casting with an essentially rectangular inductor and an oxide weir immersed in the melt head of the billet. An apparatus for performing the method according to the preamble of claim 8 also lies within the scope of the invention.

Beim elektromagnetischen Giessen von Walzbarren aus Aluminium-Magnesium-Legierungen mit einem Gehalt von mehr als etwa 3 Gew.-% Magnesium treten auf der Barrenoberfläche Fehler in Form von vertikalen Falten und Oxidablagerungen auf, welche bei hohen Anforderungen an die Oberflächenqualität von Walzprodukten ein Ueberfräsen der Walzflächen der Barren erforderlich machen. Ursache der Faltenbildung und Oxidablagerungen ist die durch Magnesium verursachte hohe Oxidationsgeschwindigkeit an der Oberfläche der Aluminium-Magnesium-Legierungsschmelze.During the electromagnetic casting of rolled bars from aluminum-magnesium alloys with a content of more than about 3% by weight of magnesium, defects in the form of vertical folds and oxide deposits occur on the billet surface, which, in the case of high demands on the surface quality of rolled products, cause milling Require rolling surfaces of the bars. The cause of the formation of wrinkles and oxide deposits is the high oxidation rate caused by magnesium on the surface of the aluminum-magnesium alloy melt.

Es ist bekannt, durch Zugabe von Beryllium zur Metallschmelze die Oxidationsgeschwindigkeit drastisch herabzusetzen und die erwähnten Oberflächenfehler dadurch zu unterdrücken. Die Zugabe von Beryllium zu Aluminiumlegierungen ist jedoch in den USA bereits verboten und ein ähnliches Verbot ist in naher Zukunft auch in anderen Ländern zu erwarten.It is known to drastically reduce the rate of oxidation by adding beryllium to the molten metal and thereby to suppress the surface defects mentioned. However, the addition of beryllium to aluminum alloys is already banned in the United States and a similar ban is expected in other countries in the near future.

Die US-A-4'724'896 offenbart eine Vorrichtung zur Verminderung der erwähnten Oberflächenfehler beim elektromagnetischen Giessen von Walzbarren durch Anordnung eines an sich bekannten, in den Schmelzekopf eintauchenden Oxidwehrs, in der Fachsprache auch skim dam genannt. Die Aussenkanten des Oxidwehrs bilden mit der Metallschmelze einen Winkel zwischen 105 und 150, wodurch der Meniskusradius der Oberfläche der Metallschmelze in der Berührungszone mit den Oxidwehraussenkanten stark verkleinert wird. Dadurch soll die sich auf der Schmelzeoberfläche bildende Oxidhaut in kurzen Zeitabständen abreissen, bevor die Oxidschicht die zur Faltenbildung und Oxidablagerung kritische Dicke erreicht hat. Es hat sich jedoch gezeigt, dass auch bei geneigten Aussenkanten des Oxidwehrs die Oberflächenfehler nicht völlig eliminiert werden können.US-A-4'724'896 discloses a device for reducing the surface defects mentioned in the electromagnetic casting of rolled ingots by arranging an oxide weir which is known per se and is immersed in the melt head, also called skim dam in technical jargon. The outer edges of the oxide weir form an angle between 105 and 150 with the metal melt, as a result of which the meniscus radius of the surface of the metal melt in the contact zone with the oxide weir outer edges is greatly reduced. As a result, the oxide skin which forms on the melt surface is to tear off at short intervals before the oxide layer has reached the thickness which is critical for the formation of wrinkles and oxide deposition. It has However, it has been shown that even with inclined outer edges of the oxide weir, the surface defects cannot be completely eliminated.

Angesichts dieser Gegebenheiten hat sich der Erfinder das Ziel gesetzt, ein Verfahren sowie eine geeignete Vorrichtung der eingangs erwähnten Art bereitzustellen, mit welchem die Faltenbildung und Oxidablagerung auf der Oberfläche von durch elektromagnetisches Giessen hergestellten Walzbarren aus Aluminiumlegierungen verhindert werden kann.In view of these circumstances, the inventor has set itself the goal of providing a method and a suitable device of the type mentioned at the outset with which the formation of wrinkles and oxide deposition on the surface of rolled bars made of aluminum alloys produced by electromagnetic casting can be prevented.

Bezüglich des Verfahrens wird die Aufgabe erfindungsgemäss dadurch gelöst, dass das sich zumindest über die Längsseiten des Induktors erstreckende, etwa parallel und in Abstand zu diesen angeordnete Oxidwehr horizontal in seiner Längsrichtung hin und her bewegt wird.With regard to the method, the object is achieved according to the invention in that the oxide weir, which extends at least over the long sides of the inductor and is arranged approximately parallel and at a distance from it, is moved horizontally in its longitudinal direction to and fro.

Grundsätzlich kann bei einem rechteckförmigen Induktor zum Giessen von Walzbarren das Oxidwehr aus bloss zwei den Induktorlängsseiten benachbarten Teilen bestehen und gegen die Querseiten des Induktors hin fehlen. In der Praxis ist es jedoch zweckmässig, ein rahmenförmiges Oxidwehr einzusetzen. Durch die ständige Bewegung des Oxidwehrs wird die Faltenbildung und Oxidablagerung auf den Walzflächen der Barren durch frühzeitiges Reissen und Ablösen der sich auf der Schmelzeoberfläche bildenden Oxidhaut verhindert.In principle, in a rectangular inductor for casting rolled bars, the oxide weir can consist of only two parts adjacent to the long sides of the inductor and are missing towards the transverse sides of the inductor. In practice, however, it is advisable to use a frame-shaped oxide weir. The constant movement of the oxide weir prevents the formation of wrinkles and oxide deposits on the rolled surfaces of the ingots by premature tearing and detachment of the oxide skin that forms on the melt surface.

Ein Bewegungszyklus soll zweckmässigerweise 1 bis 8 sec, bevorzugt etwa 3 sec dauern, wobei die horizontale Verschiebung des Oxidwehrs zwischen zwei Endstellungen 5 bis 15 mm, vorzugsweise etwa 8 mm beträgt.A movement cycle should expediently last from 1 to 8 seconds, preferably about 3 seconds, the horizontal displacement of the oxide weir between two end positions being 5 to 15 mm, preferably about 8 mm.

Die erwähnte frühzeitige Ablösung der Oxidhaut auf der Schmelzeoberfläche kann durch Einleitung von Vibrationen in das Oxidwehr in Strangabzugsrichtung unterstützt werden. Die geeignete Vibrationsfrequenz liegt zwischen 50 und 1000 Hz, vorzugsweise etwa bei 400 bis 600 Hz.The aforementioned premature detachment of the oxide skin on the melt surface can be supported by introducing vibrations into the oxide weir in the direction of strand withdrawal. The suitable vibration frequency is between 50 and 1000 Hz, preferably around 400 to 600 Hz.

Der optimale Beschleunigungswert der Vibrationsbewegung liegt zwischen +/- 20 g und +/- 60 g, wobei g die Erdbeschleunigung bedeutet.The optimal acceleration value of the vibration movement is between +/- 20 g and +/- 60 g, where g means the acceleration due to gravity.

Die Kombination von horizontaler Bewegung des Oxidwehrs mit vertikaler Einleitung von Vibrationen erweist sich bereits vor dem eigentlichen Giessstart während der Metalleinlaufphase als vorteilhaft, wird doch dadurch einerseits bei Verwendung eines Metallverteilsackes aus hitzebeständigem Gewebe der gleichmässige Durchtritt der Metallschmelze erleichtert und andererseits die für eine gute Barrenqualität erforderliche optimale Formfüllung des Anfahrbodens erreicht.The combination of horizontal movement of the oxide weir with vertical introduction of vibrations proves itself before the actual one Casting start during the metal running-in phase is advantageous, as this makes it easier, on the one hand, to use a metal distribution sack made of heat-resistant fabric, and even passage of the molten metal is achieved, and, on the other hand, the optimal shape filling of the start-up base required for good ingot quality is achieved.

Die zweckmässige Eintauchtiefe des Oxidwehrs in der Metallschmelze liegt bei 5 bis 15 mm, bevorzugt etwa bei 10 mm.The appropriate immersion depth of the oxide weir in the molten metal is 5 to 15 mm, preferably about 10 mm.

In Bezug auf die Vorrichtung wird die Aufgabe erfindungsgemäss dadurch gelöst, dass bei einem im wesentlichen rechteckförmigen Induktor und einem im wesentlichen rechteckförmigen Oxidwehr dieses an einem Tragrahmen festgelegt ist, welcher einends mit einem gegenüber dem Induktor ortsfesten pneumatischen Zylinder gekoppelt und andernends in einer gegenüber dem Induktor ortsfesten Führung geführt ist.With regard to the device, the object is achieved according to the invention in that, in the case of an essentially rectangular inductor and an essentially rectangular oxide weir, this is fixed to a support frame which is coupled on one side to a pneumatic cylinder which is stationary with respect to the inductor and on the other in a position opposite the inductor fixed leadership is guided.

Zur Einleitung vertikaler Vibrationen ist auf dem Tragrahmen mindestens ein Vibrator, vorzugsweise ein Kugelvibrator befestigt.To initiate vertical vibrations, at least one vibrator, preferably a ball vibrator, is attached to the support frame.

Der Abstand der im wesentlichen parallel zueinander liegenden Längsseiten des Induktors und des Oxidwehrs liegt zweckmässigerweise zwischen 50 und 100 mm und beträgt bevorzugt etwa 70 bis 80 mm.The distance between the longitudinal sides of the inductor and the oxide weir lying essentially parallel to one another is expediently between 50 and 100 mm and is preferably approximately 70 to 80 mm.

Weitere Vorteile, Merkmale und Einzelheiten der Erfindung ergeben sich aus der nachfolgenden Beschreibung eines Ausführungsbeispiels sowie anhand der Zeichung; diese zeigt in

  • Fig. 1 den schematisierten Querschnitt durch eine Stranggiessanlage;
  • Fig. 2 die schematisierte Draufsicht auf einen Induktor mit Oxidwehr.
Further advantages, features and details of the invention emerge from the following description of an exemplary embodiment and from the drawing; this shows in
  • 1 shows the schematic cross section through a continuous casting installation;
  • Fig. 2 shows the schematic plan view of an inductor with oxide weir.

Eine vertikale elektromagnetische Stranggiessanlage 10 weist gemäss Fig. 1 als Kokille einen schlaufenförmigen Induktor 12 auf, welcher zur Feineinstellung des elektromagnetischen Feldes von einem Schirm 14 teilweise überdeckt wird. Ein ringförmig angeordneter Kühlmittelkasten 16 dient zum Aufbringen von Kühlmittel 18 auf die Oberfläche des aus der Kokille austretenden Stranges oder Walzbarrens 20. Ueber eine Giessdüse 21 wird das flüssige Metall der Kokille zugeführt. Der Strang 20 wird mittels eines Anfahrbodens 22, der die Kokille bis zum Giessstart geschlossen hält, kontinuierlich abgesenkt.According to FIG. 1, a vertical electromagnetic continuous casting installation 10 has a loop-shaped inductor 12, which is partially covered by a screen 14 for the fine adjustment of the electromagnetic field. An annularly arranged coolant box 16 is used to apply coolant 18 to the surface of the strand or roll ingot 20 emerging from the mold. Via a pouring nozzle 21 the liquid metal is fed to the mold. The strand 20 is continuously lowered by means of a start-up floor 22, which keeps the mold closed until the start of casting.

An einem Tragrahmen 24 aus Stahl ist ein im wesentlichen der Schlaufenform des Induktors 12 angepasstes Oxidwehr 26 aus einem keramischen Werkstoff festgelegt, welches um ein Mass a von beispielsweise 10 mm in den Schmelzekopf 28 des Stranges 20 eintaucht. Auf dem Kühlmittelkasten 16 ist ein pneumatischer Zylinder 30 montiert, dessen Kolbenstange 32 mit einer ersten Aufhängung 34 a des Tragrahmens 24 verbunden ist. Eine der ersten Aufhängung 34 a gegenüberliegende zweite Aufhängung 34 b des Tragrahmens 24 lagert in einer auf der gegenüber dem pneumatischen Zylinder 30 diametral entgegengesetzten Seite des Kühlmittelkastens 16 montierten Führung 36.On a support frame 24 made of steel, an oxide weir 26 made of a ceramic material, which is essentially adapted to the loop shape of the inductor 12, is immersed in the melt head 28 of the strand 20 by a dimension a of, for example, 10 mm. On the coolant box 16, a pneumatic cylinder 30 is mounted, the piston rod 32 is connected to a first suspension 34 a of the support frame 24. A second suspension 34 b of the support frame 24 opposite the first suspension 34 a is supported in a guide 36 mounted on the side of the coolant box 16 diametrically opposite the pneumatic cylinder 30.

Aus Fig. 2 wird die Anordnung des Tragrahmens 24 und des Oxidwehrs 26 in Bezug auf die Lage des Induktors 12 für einen Strang 20 in der Form eines rechteckigen Walzbarrens mit einem Barrenformat von etwa 1600 x 660 mm entsprechend einer Länge x₁=1600 mm der Längsseite und y₁=660 mm der Querseite des Induktors 12. Die Längs- und Querseiten des ebenfalls rechteckförmigen Oxidwehrs 26 liegen symmetrisch und parallel zu den entsprechenden Induktorseiten und weisen eine Länge von beispielsweise x₂=1420 mm und y₂=500 mm auf. Der Abstand b zwischen den Längsseiten x₁ und x₂ des Induktors 12 bzw. des Oxidwehrs 26 beträgt damit 80 mm, der Abstand c zwischen den Querseiten y₁ und y₂ 90 mm.From Fig. 2, the arrangement of the support frame 24 and the oxide weir 26 in relation to the position of the inductor 12 for a strand 20 in the form of a rectangular rolling bar with a bar format of about 1600 x 660 mm corresponding to a length x₁ = 1600 mm of the long side and y₁ = 660 mm of the transverse side of the inductor 12. The longitudinal and transverse sides of the likewise rectangular oxide weir 26 are symmetrical and parallel to the corresponding inductor sides and have a length of, for example, x₂ = 1420 mm and y₂ = 500 mm. The distance b between the long sides x₁ and x₂ of the inductor 12 and the oxide weir 26 is thus 80 mm, the distance c between the transverse sides y₁ and y₂ 90 mm.

Ueber die horizontal und in der parallel zur Walzoberfläche des Stranges 20 liegenden Mittelebene m geführte Kolbenstange 32 des pneumatischen Zylinders 30 kann der Tragrahmen 24 mit dem Oxidwehr 26 horizontal in Richtung der Längsseiten x₁ des Induktors 12 hin und her bewegt werden. Auf Querstegen 38 des Tragrahmens 24 sind Kugelvibratoren 40 festgelegt.About the horizontal and in the parallel to the rolling surface of the strand 20 lying central plane m piston rod 32 of the pneumatic cylinder 30, the support frame 24 with the oxide weir 26 can be moved horizontally in the direction of the long sides x 1 of the inductor 12 back and forth. Ball vibrators 40 are fixed on crossbars 38 of the support frame 24.

Claims (10)

  1. Process for preventing folding and oxide deposits on the rolling faces of a billet (20) made from an aluminium alloy, especially an aluminium/magnesium alloy, in vertical electromagnetic continuous casting with a substantially rectangular inductor (12) and an oxide weir (26) immersed in the melt head (28) of the billet (20), characterised in that the oxide weir (26) extending at least over the longitudinal sides (x₁) of the inductor (12) and arranged approximately parallel thereto and at a distance (b) therefrom is moved horizontally to and fro in its longitudinal direction (m).
  2. Process according to claim 1, characterised in that a movement cycle is effected within 1 to 8 seconds, preferably in approximately 3 seconds.
  3. Process according to claim 1 or claim 2, characterised in that the horizontal displacement of the oxide weir (26) between two end positions is 5 to 15 mm, preferably approximately 8 mm.
  4. Process according to one of claims 1 to 3, characterised in that the oxide weir (26) is vibrated in the vertical direction.
  5. Process according to claim 4, characterised in that the vibration frequency is 50 to 1000 Hz, preferably approximately 400 to 600 Hz.
  6. Process according to claim 4 or claim 5, characterised in that the acceleration of the vibrational movement is between +/- 20 g and +/- 60 g.
  7. Process according to at least one of claims 1 to 6, characterised in that the immersion depth of the oxide weir (26) in the molten metal (28) is 5 to 15 mm, preferably approximately 10 mm.
  8. Installation for carrying out the process according to one of claims 1 to 7 in a vertical electromagnetic continuous casting plant (10) with a substantially rectangular inductor (12) and a substantially rectangular oxide weir (26) immersed in the melt head (28) of the billet (20), characterised in that the oxide weir (26) is secured to a supporting frame (24) which is coupled at one end to a pneumatic cylinder (30) which is fixed with respect to the inductor and at the other end is guided in a guide (36) which is fixed with respect to the inductor (12).
  9. Installation according to claim 8, characterised in that at least one vibrator (40), preferably a ball vibrator, is secured to the supporting frame (24).
  10. Installation according to claim 8 or claim 9, characterised in that the distance (b) between the longitudinal sides (x₁, x₂) of the inductor (12) and of the oxide weir (26) situated substantially parallel to one another is 50 to 100 mm, preferably approximately 70 to 80 mm.
EP91810822A 1990-11-06 1991-10-24 Process and installation for electromagnetic casting of aluminium alloyed billets having a fold-free surface Expired - Lifetime EP0485331B1 (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
AT91810822T ATE100004T1 (en) 1990-11-06 1991-10-24 METHOD AND DEVICE FOR THE ELECTROMAGNETIC CASTING OF ROLLING INERTS WITH A WRINKLE-FREE SURFACE MADE OF ALUMINUM ALLOY.

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
CH3522/90 1990-11-06
CH3522/90A CH682467A5 (en) 1990-11-06 1990-11-06 Method and apparatus for electromagnetic casting of rolling ingots of aluminum alloy with wrinkle-free surface.

Publications (2)

Publication Number Publication Date
EP0485331A1 EP0485331A1 (en) 1992-05-13
EP0485331B1 true EP0485331B1 (en) 1994-01-12

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EP (1) EP0485331B1 (en)
JP (1) JPH04266453A (en)
AT (1) ATE100004T1 (en)
AU (1) AU640055B2 (en)
CA (1) CA2054489A1 (en)
CH (1) CH682467A5 (en)
DE (1) DE59100852D1 (en)
ES (1) ES2049098T3 (en)
NO (1) NO176596C (en)
ZA (1) ZA918481B (en)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP3110583A4 (en) * 2014-02-24 2017-10-18 Wagstaff, Inc. Oxide control system for a continuous casting molten metal mold

Families Citing this family (3)

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Publication number Priority date Publication date Assignee Title
AU8383398A (en) 1997-07-10 1999-02-08 Wagstaff, Inc. A system for providing consistent flow through multiple permeable perimeter walls in a casting mold
WO2002034434A1 (en) * 2000-10-27 2002-05-02 The Ohio State University Method and apparatus for controlling standing surface wave and turbulence in continuous casting vessel
WO2023183723A1 (en) * 2022-03-24 2023-09-28 Novelis Inc. Systems and methods for controlling vertical folds during direct chill casting

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US4273180A (en) * 1979-03-08 1981-06-16 Tertishnikov Anatoly S Process and apparatus for continuous casting of metal in electromagnetic field
US4724896A (en) * 1987-02-09 1988-02-16 Aluminum Company Of America Apparatus and method for improving the surface characteristics of continuously cast metal ingot
US4989666A (en) * 1988-12-22 1991-02-05 Swiss Aluminium Ltd. Process and device for electromagnetically casting metals
JPH02255246A (en) * 1989-03-29 1990-10-16 Sumitomo Light Metal Ind Ltd Method and apparatus for electromagnetic field casting

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP3110583A4 (en) * 2014-02-24 2017-10-18 Wagstaff, Inc. Oxide control system for a continuous casting molten metal mold

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CA2054489A1 (en) 1992-05-07
ES2049098T3 (en) 1994-04-01
JPH04266453A (en) 1992-09-22
CH682467A5 (en) 1993-09-30
ZA918481B (en) 1992-07-29
AU8607991A (en) 1992-05-14
NO176596C (en) 1995-05-03
ATE100004T1 (en) 1994-01-15
US5184667A (en) 1993-02-09
NO914309L (en) 1992-05-07
DE59100852D1 (en) 1994-02-24
NO176596B (en) 1995-01-23
AU640055B2 (en) 1993-08-12
NO914309D0 (en) 1991-11-04
EP0485331A1 (en) 1992-05-13

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