EP0446152A1 - Package for introducing light metal into a molten aluminium alloy - Google Patents

Package for introducing light metal into a molten aluminium alloy Download PDF

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Publication number
EP0446152A1
EP0446152A1 EP91420072A EP91420072A EP0446152A1 EP 0446152 A1 EP0446152 A1 EP 0446152A1 EP 91420072 A EP91420072 A EP 91420072A EP 91420072 A EP91420072 A EP 91420072A EP 0446152 A1 EP0446152 A1 EP 0446152A1
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EP
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Prior art keywords
light metal
alloy
metal
tube
package
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EP91420072A
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German (de)
French (fr)
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EP0446152B1 (en
Inventor
Alain Marguier
Yves Petit
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Rio Tinto France SAS
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Aluminium Pechiney SA
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    • C—CHEMISTRY; METALLURGY
    • C22—METALLURGY; FERROUS OR NON-FERROUS ALLOYS; TREATMENT OF ALLOYS OR NON-FERROUS METALS
    • C22C—ALLOYS
    • C22C1/00—Making non-ferrous alloys
    • C—CHEMISTRY; METALLURGY
    • C22—METALLURGY; FERROUS OR NON-FERROUS ALLOYS; TREATMENT OF ALLOYS OR NON-FERROUS METALS
    • C22C—ALLOYS
    • C22C21/00—Alloys based on aluminium
    • C22C21/02—Alloys based on aluminium with silicon as the next major constituent
    • C22C21/04—Modified aluminium-silicon alloys

Definitions

  • the present invention relates to a packaging for the introduction of light metal into an aluminum alloy in the liquid state.
  • this addition can be made in the melting furnace in the form of metallic sodium or by casting in the feed chute by means of aluminum wire filled with sodium.
  • the addition is also made in the feed furnace in the form of flux or metallic sodium.
  • alkali and alkaline earth metals generally have a lower density than that of aluminum so that if they are simply poured into the alloy bath, they will float on the surface and will mix poorly, even shaking.
  • these metals are also very hygroscopic and easily oxidizable in air, they will react on the surface of the bath and transform into their hydroxide and / or their carbonate.
  • a reduction in the efficiency of said metals an effect to which will be added, due to the presence of the products of the reaction, the appearance of porosities or heterogeneities capable of causing embrittlement of the alloy obtained. .
  • US Patent No. 3,848,391 describes, for example, for the treatment of an aluminum-silicon alloy, the use of an aluminum box containing sodium or lithium and provided with a nestable cover. Under these conditions, the problem of storing and handling the addition protected from air is solved, but not that of its complete dissolution within the bath. Indeed, the boxes, having a density lower than that of the bath, tend to float. In addition, the temperature of the bath being relatively higher than that of the melting temperature of aluminum, the box dissolves quickly and suddenly releases its contents. These facts result in a rise in the surface of sodium or lithium where an oxidation reaction and a decrease in efficiency.
  • a metal package for the introduction of light metal into an aluminum alloy in the liquid state characterized in that it consists of a portion of tube to the interior of which the light metal is placed, said tube being produced with a metal which has a melting temperature higher than that of the alloy and which is capable of alloying with the latter without being a source of pollution, being provided at least one of its ends with a constriction which leaves a passage of small section from the outside towards the light metal and forming with the latter a set of density greater than that of the alloy.
  • the packaging takes much longer to alloy with the alloy than aluminum, so that its complete dissolution occurs when all the light metal has practically spread into the alloy.
  • the metal constituting the packaging can be an element of the alloy other than aluminum.
  • the passage section allowed the light metal to spread with a relatively low speed and to avoid any untimely ascent. area; on the other hand, the oxidation of the light metal was limited to a very small thickness. Thus, any risk of pollution by hydroxides and / or carbonates was negligible even after a relatively long residence time of the packaging in the air.
  • the density of the packaging-light metal assembly being higher than that of the alloy, said packaging descends to the bottom of the liquid bath so that the light metal escaping from the package must cross the entire height of said bath before reaching the surface and thus its dissolution is then practically complete.
  • the metal used for packaging is preferably chosen from the group consisting of copper, nickel and iron and accommodates with all alkali and alkaline earth metals.
  • the ratio of the passage section to the external section of the tube is between 1/10 and 1/1000; values included outside this range lead respectively to light metal passage rates in the bath which are generally too large or too small but which can nevertheless be suitable either when the height of the bath is high enough to ensure complete dissolution even at high speed, ie when the prolongation of the treatment time brought about by the low speed is without disadvantage in the course of the process.
  • the light metal is placed inside the packaging in the form of a wire which can be bare or surrounded by an aluminum sheath.
  • a practical way of making the packaging consists in taking a tube of great length, in introducing therein in a dry and non-oxidizing atmosphere the wire along a substantially equivalent length and in sealing the tube in a leaktight manner at its ends. It can thus be stored for a long time without any risk of deterioration. At the time of use, this tube is divided into portions of greater or lesser length corresponding to the weight of light metal which it is desired to introduce into the alloy.
  • This sharing is obtained by stretching or by flattening the tube at the chosen location then shearing so as to leave a passage which is then occupied by the section of the wire which prevents any oxidation of the light metal inside the tube. If an unused portion of the tube remains, it is then hermetically sealed, for example by crushing, at the point of shearing so that it can be stored until the next use.
  • This packaging finds its application in particular in the modification of aluminum-silicon alloys with sodium where it makes it possible to achieve an efficiency close to 100%.

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  • Chemical & Material Sciences (AREA)
  • Engineering & Computer Science (AREA)
  • Materials Engineering (AREA)
  • Mechanical Engineering (AREA)
  • Metallurgy (AREA)
  • Organic Chemistry (AREA)
  • Packages (AREA)
  • Wrappers (AREA)
  • Secondary Cells (AREA)
  • Packaging Of Annular Or Rod-Shaped Articles, Wearing Apparel, Cassettes, Or The Like (AREA)
  • Manufacture And Refinement Of Metals (AREA)
  • Tubes (AREA)
  • Coating With Molten Metal (AREA)
  • Crucibles And Fluidized-Bed Furnaces (AREA)
  • Treatment Of Steel In Its Molten State (AREA)
  • Photoreceptors In Electrophotography (AREA)
  • Cookers (AREA)
  • Packging For Living Organisms, Food Or Medicinal Products That Are Sensitive To Environmental Conditiond (AREA)
  • Laminated Bodies (AREA)
  • Medical Preparation Storing Or Oral Administration Devices (AREA)

Abstract

Metal package for introducing a light metal into an aluminium alloy in liquid state. <??>This package is characterised in that it consists of a length of pipe inside which the light metal is placed, the said pipe being produced with a metal which has a melting temperature higher than that of the alloy and which is capable of alloying with the latter without being a source of contamination, being provided at at least one of its ends with a constriction which leaves remaining a passage of small cross-section towards the light metal and forming with the latter a combination of higher density than that of the alloy. <??>The invention finds its application especially in the modification of aluminium-silicon alloys using sodium, where it allows an efficiency close to 100 % to be attained. <IMAGE>

Description

La présente invention est relative à un emballage pour l'introduction de métal léger dans un alliage d'aluminium à l'état liquide.The present invention relates to a packaging for the introduction of light metal into an aluminum alloy in the liquid state.

Dans les procédés métallurgiques, il est connu d'ajouter des métaux légers, tels que les métaux alcalins ou alcalino-terreux, à d'autres métaux ou alliages. Ainsi, par exemple, lors de la fabrication d'aluminium-silicium, il est de pratique courante de faire des ajouts de sodium de quelques p.p.m. dans l'alliage à l'état liquide afin de donner à l'eutectique qui se développe lors de la cristallisation par refroidissement une structure fibreuse et de conférer ainsi au produit obtenu de meilleures caractéristiques mécaniques.In metallurgical processes, it is known to add light metals, such as alkali or alkaline earth metals, to other metals or alloys. Thus, for example, during the manufacture of aluminum-silicon, it is common practice to make sodium additions of a few ppm in the alloy in the liquid state in order to give the eutectic which develops during crystallization by cooling a fibrous structure and thus give the product obtained better mechanical characteristics.

Dans le cas de la production de lingots, cet ajout peut être fait dans le four de fusion sous forme de sodium métallique ou à la coulée dans la goulotte d'alimentation au moyen de fil d'aluminium fourré de sodium. Dans le cas de la production de pièces moulées, l'ajout est également fait dans le four d'alimentation sous forme de flux ou de sodium métallique.In the case of the production of ingots, this addition can be made in the melting furnace in the form of metallic sodium or by casting in the feed chute by means of aluminum wire filled with sodium. In the case of the production of molded parts, the addition is also made in the feed furnace in the form of flux or metallic sodium.

Toutefois, cet ajout ne peut être réalisé dans les mêmes conditions que celles qui sont habituellement utilisées avec d'autres éléments d'addition.However, this addition cannot be carried out under the same conditions as those which are usually used with other addition elements.

En effet, les métaux alcalins et alcalino-terreux ont généralement une masse volumique plus petite que celle de l'aluminium de sorte que si on les verse simplement dans le bain d'alliage, ils vont flotter à la surface et se mélangeront mal, même en agitant. Comme ces métaux sont également très hygroscopiques et facilement oxydables à l'air, ils vont réagir à la surface du bain et se transformer en leur hydroxyde et/ou en leur carbonate.
D'où une réduction de l'efficacité desdits métaux, effet auquel va s'ajouter, du fait de la présence des produits de la réaction, l'apparition de porosités ou d'hétérogénéités susceptibles d'entraîner une fragilisation de l'alliage obtenu.Indeed, alkali and alkaline earth metals generally have a lower density than that of aluminum so that if they are simply poured into the alloy bath, they will float on the surface and will mix poorly, even shaking. As these metals are also very hygroscopic and easily oxidizable in air, they will react on the surface of the bath and transform into their hydroxide and / or their carbonate.
Hence a reduction in the efficiency of said metals, an effect to which will be added, due to the presence of the products of the reaction, the appearance of porosities or heterogeneities capable of causing embrittlement of the alloy obtained. .

Il est donc nécessaire d'éviter la réaction en surface de l'ajout et pour cela de réaliser son introduction et sa dissolution complète au sein du bain, problème dont la résolution doit être associée au problème du stockage et de la manipulation préalable à l'abri de l'air dudit ajout.It is therefore necessary to avoid the reaction on the surface of the addition and for this to achieve its introduction and complete dissolution within the bath, a problem whose resolution must be associated with the problem of storage and handling prior to air shelter from said addition.

Certes, des solutions ont déjà été proposées comme, par exemple, l'utilisation de cloches à l'intérieur desquelles on place le métal léger et que l'on immerge dans le bain de sorte que ledit métal ne peut remonter directement à la surface du bain et qu'on limite ainsi le taux d'oxydation.
Cependant, du fait que la surface d'échange entre le métal léger et le bain est relativement grande, il se produit une dispersion trop rapide de l'ajout de sorte qu'une partie de ce dernier se retrouve à la surface où il se dégrade entraînant ainsi une réduction de l'efficacité voisine de 50%.Admittedly, solutions have already been proposed such as, for example, the use of bells inside which the light metal is placed and which one immerses in the bath so that said metal cannot rise directly to the surface of the bath and thus limit the rate of oxidation.
However, since the exchange surface between the light metal and the bath is relatively large, too rapid a dispersion of the addition occurs so that part of the latter ends up on the surface where it degrades thus resulting in a reduction in efficiency of around 50%.

C'est pourquoi de nouvelles solutions sont apparues par la suite et qui consistent le plus souvent à placer l'ajout dans un emballage hermétique de même nature que le métal du bain.This is why new solutions have appeared thereafter and which most often consist in placing the addition in an airtight packaging of the same kind as the metal of the bath.

Le brevet US N° 3 848 391 décrit, par exemple, pour le traitement d'un alliage aluminium-silicium, l'utilisation d'une boîte en aluminium contenant du sodium ou du lithium et munie d'un couvercle emboîtable. Dans ces conditions, on résout le problème du stockage et de la manipulation de l'ajout à l'abri de l'air, mais non celui de sa dissolution complète au sein du bain.
En effet, les boîtes, ayant une masse volumique inférieure à celle du bain, ont tendance à flotter. En outre, la température du bain étant relativement plus élevée que celle de la température de fusion de l'aluminium, la boîte se dissout rapidement et libère brutalement son contenu. De ces faits, il résulte une remontée en surface du sodium ou du lithium d'où une réaction d'oxydation et une diminution de l'efficacité.US Patent No. 3,848,391 describes, for example, for the treatment of an aluminum-silicon alloy, the use of an aluminum box containing sodium or lithium and provided with a nestable cover. Under these conditions, the problem of storing and handling the addition protected from air is solved, but not that of its complete dissolution within the bath.
Indeed, the boxes, having a density lower than that of the bath, tend to float. In addition, the temperature of the bath being relatively higher than that of the melting temperature of aluminum, the box dissolves quickly and suddenly releases its contents. These facts result in a rise in the surface of sodium or lithium where an oxidation reaction and a decrease in efficiency.

C'est pourquoi la demanderesse, cherchant à améliorer le taux de dissolution de l'ajout, a mis au point un emballage métallique pour l'introduction de métal léger dans un alliage d'aluminium à l'état liquide caractérisé en ce qu'il est constitué par une portion de tube à l'intérieur duquel est placé le métal léger, ledit tube étant réalisé avec un métal qui a une température de fusion supérieure à celle de l'alliage et qui est susceptible de s'allier avec ce dernier sans être une source de pollution, étant muni à au moins une de ses extrémités d'un rétreint qui laisse subsister un passage de faible section de l'extérieur vers le métal léger et formant avec ce dernier un ensemble de masse volumique supérieure à celle de l'alliage.This is why the applicant, seeking to improve the dissolution rate of the addition, has developed a metal package for the introduction of light metal into an aluminum alloy in the liquid state, characterized in that it consists of a portion of tube to the interior of which the light metal is placed, said tube being produced with a metal which has a melting temperature higher than that of the alloy and which is capable of alloying with the latter without being a source of pollution, being provided at least one of its ends with a constriction which leaves a passage of small section from the outside towards the light metal and forming with the latter a set of density greater than that of the alloy.

Ainsi, la présente invention consiste, à la différence du brevet cité:

  • 1.-à remplacer l'aluminium par un métal ayant une température de fusion plus élevée que celle de l'alliage.
  • 2.-à utiliser une portion de tube dont les extrémités ne sont pas fermées par un couvercle mais ouvertes, du moins pour l'une d'entre elles, suivant une section d'aire très réduite.
  • 3.-à obtenir un ensemble emballage-métal léger de masse volumique plus élevée que celle de l'alliage.
Thus, the present invention, unlike the patent cited:
  • 1.-to replace aluminum with a metal having a higher melting temperature than that of the alloy.
  • 2. to use a portion of tube whose ends are not closed by a cover but open, at least for one of them, according to a very small cross-sectional area.
  • 3.-to obtain a light packaging-metal assembly with a higher density than that of the alloy.

Suivant la première différence, l'emballage met beaucoup plus de temps à s'allier à l'alliage que l'aluminium de sorte que sa dissolution complète se produit quand tout le métal léger s'est pratiquement répandu dans l'alliage. Par ailleurs, le métal constituant l'emballage peut être un élément de l'alliage autre que l'aluminium.According to the first difference, the packaging takes much longer to alloy with the alloy than aluminum, so that its complete dissolution occurs when all the light metal has practically spread into the alloy. Furthermore, the metal constituting the packaging can be an element of the alloy other than aluminum.

Suivant la deuxième différence, on a constaté que, d'une part, l'emballage étant immergé dans l'alliage, la section de passage permettait au métal léger de se répandre avec une vitesse relativement faible et d'éviter toute remontée intempestive à la surface; d'autre part, l'oxydation du métal léger se limitait à une très faible épaisseur. Ainsi, tout risque de pollution par les hydroxydes et/ou les carbonates était négligeable même après un temps de séjour relativement long de l'emballage a l'air.According to the second difference, it was found that, on the one hand, the packaging being immersed in the alloy, the passage section allowed the light metal to spread with a relatively low speed and to avoid any untimely ascent. area; on the other hand, the oxidation of the light metal was limited to a very small thickness. Thus, any risk of pollution by hydroxides and / or carbonates was negligible even after a relatively long residence time of the packaging in the air.

Suivant la troisième différence, la masse volumique de l'ensemble emballage-métal léger étant plus élevée que celle de l'alliage, ledit emballage descend au fond du bain liquide de sorte que le métal léger s'échappant de l'emballage doit traverser toute la hauteur dudit bain avant d'arriver à la surface et qu'ainsi sa dissolution est alors pratiquement complète.According to the third difference, the density of the packaging-light metal assembly being higher than that of the alloy, said packaging descends to the bottom of the liquid bath so that the light metal escaping from the package must cross the entire height of said bath before reaching the surface and thus its dissolution is then practically complete.

Dans ces conditions, on constate que l'efficacité de l'ajout est de 100%.Under these conditions, it is found that the efficiency of the addition is 100%.

Le métal utilisé pour l'emballage est de préférence choisi dans le groupe constitué par le cuivre, le nickel et le fer et s'accommode avec tous les métaux alcalins et alcalino-terreux.The metal used for packaging is preferably chosen from the group consisting of copper, nickel and iron and accommodates with all alkali and alkaline earth metals.

De préférence, le rapport de la section de passage à la section extérieure du tube est comprise entre 1/10 et 1/1000; des valeurs comprises à l'extérieur de cette fourchette conduisent respectivement à des vitesses de passage du métal léger dans le bain qui sont généralement trop grandes ou trop petites mais qui peuvent néanmoins convenir soit quand la hauteur du bain est suffisamment élevée pour assurer une dissolution complète même à grande vitesse, soit quand la prolongation de la durée de traitement entraînée par la vitesse faible est sans inconvénient dans le déroulement du procédé.Preferably, the ratio of the passage section to the external section of the tube is between 1/10 and 1/1000; values included outside this range lead respectively to light metal passage rates in the bath which are generally too large or too small but which can nevertheless be suitable either when the height of the bath is high enough to ensure complete dissolution even at high speed, ie when the prolongation of the treatment time brought about by the low speed is without disadvantage in the course of the process.

Suivant une variante préférée de l'invention, le métal léger est placé à l'intérieur de l'emballage sous forme d'un fil qui peut être nu ou entouré par une gaine en aluminium. Une manière pratique de réaliser l'emballage consiste à prendre un tube de grande longueur, à y introduire sous atmosphère sèche et non oxydante le fil suivant une longueur sensiblement équivalente et à sceller le tube de façon étanche à ses extrémités. On peut ainsi le stocker longtemps sans aucun risque de dégradation. Au moment de l'utilisation, ce tube est partagé en portions de longueur plus ou moins grande correspondant au poids de métal léger qu'on veut introduire dans l'alliage. Ce partage est obtenu par étirage ou par aplatissement du tube à l'endroit choisi puis cisaillement de manière à laisser subsister un passage qui est alors occupé par la section du fil ce qui empêche toute oxydation du métal léger à l'intérieur du tube. S'il reste une portion de tube non utilisée, elle est alors fermée hermétiquement, par exemple par écrasement, à l'endroit du cisaillement de façon à pouvoir être stockée jusqu'à la prochaine utilisation.According to a preferred variant of the invention, the light metal is placed inside the packaging in the form of a wire which can be bare or surrounded by an aluminum sheath. A practical way of making the packaging consists in taking a tube of great length, in introducing therein in a dry and non-oxidizing atmosphere the wire along a substantially equivalent length and in sealing the tube in a leaktight manner at its ends. It can thus be stored for a long time without any risk of deterioration. At the time of use, this tube is divided into portions of greater or lesser length corresponding to the weight of light metal which it is desired to introduce into the alloy. This sharing is obtained by stretching or by flattening the tube at the chosen location then shearing so as to leave a passage which is then occupied by the section of the wire which prevents any oxidation of the light metal inside the tube. If an unused portion of the tube remains, it is then hermetically sealed, for example by crushing, at the point of shearing so that it can be stored until the next use.

L'invention sera mieux comprise à l'aide de la figure jointe qui représente un emballage suivant une coupe longitudinale axiale. 0n distingue une portion de tube 1 en cuivre à l'intérieur duquel est placé un fil 2 en aluminium fourré de sodium 3. Cette portion présente à chacune de ses extrémités 4 et 5 un rétreint qui laisse subsister les passages 6 et 7. Un tel ensemble, lorsqu'il est immergé dans un bain d'alliage à l'état liquide, descend au fond dudit bain où le sodium commence par fondre puis s'échappe par les ouvertures 6 et 7 pour se répandre lentement dans le bain et se dissoudre complètement avant d'atteindre la surface.The invention will be better understood using the attached figure which shows a package in an axial longitudinal section. We distinguish a portion of copper tube 1 inside which is placed a wire 2 of aluminum filled with sodium 3. This portion has at each of its ends 4 and 5 a constriction which leaves the passages 6 and 7. Such a together, when immersed in an alloy bath in the liquid state, descends to the bottom of said bath where the sodium begins to melt and then escapes through the openings 6 and 7 to spread slowly in the bath and dissolve completely before reaching the surface.

L'invention peut être illustrée par l'exemple d'application suivant:
dans deux poches contenant chacune 6000 kg d'alliage d'aluminium du type A-S5U3 (c'est-à-dire renfermant en poids 5% de silicium et 3% de cuivre) à une température de 850°C et qui occupait une hauteur de 1m50, on a introduit du sodium de deux manières différentes:

  • 1) sous forme de fil d'aluminium fourré de sodium placé dans la tubulure de remplissage en métal de la poche pendant la coulée. L'efficacité de l'ajout a été voisine de 75%.
  • 2) dans un emballage suivant l'invention.
    L'efficacité a été alors pratiquement de 100%.
The invention can be illustrated by the following example of application:
in two bags each containing 6000 kg of aluminum alloy of the A-S5U3 type (that is to say containing by weight 5% of silicon and 3% of copper) at a temperature of 850 ° C. and which occupied a height of 1.50m, sodium was introduced in two different ways:
  • 1) in the form of aluminum wire filled with sodium placed in the metal filling tube of the bag during casting. The effectiveness of the addition was close to 75%.
  • 2) in packaging according to the invention.
    The efficiency was then almost 100%.

Cet emballage trouve son application notamment dans la modification des alliages d'aluminium-silicium par le sodium où il permet d'atteindre une efficacité voisine de 100%.This packaging finds its application in particular in the modification of aluminum-silicon alloys with sodium where it makes it possible to achieve an efficiency close to 100%.

Claims (6)

Emballage métallique pour l'introduction de métal léger dans un alliage d'aluminium à l'état liquide caractérisé en ce qu'il est constitué par une portion de tube à l'intérieur duquel est placé le métal léger, ledit tube étant réalisé avec un métal qui a une température de fusion supérieure à celle de l'alliage et qui est susceptible de s'allier avec ce dernier sans être une source de pollution, étant muni à au moins une de ses extrémités d'un rétreint qui laisse subsister un passage de faible section de l'extérieur vers le métal léger et formant avec ce dernier un ensemble de masse volumique supérieure à celle de l'alliage.Metallic packaging for the introduction of light metal into an aluminum alloy in the liquid state, characterized in that it consists of a tube portion inside which the light metal is placed, said tube being produced with a metal which has a melting temperature higher than that of the alloy and which is capable of alloying with the latter without being a source of pollution, being provided at at least one of its ends with a constriction which leaves a passage of small section from the outside towards the light metal and forming with the latter a set of density greater than that of the alloy. Emballage selon la revendication 1, caractérisé en ce que le métal qui constitue la portion de tube appartient au groupe formé par le cuivre, le nickel, le fer.Packaging according to claim 1, characterized in that the metal which constitutes the tube portion belongs to the group formed by copper, nickel, iron. Emballage selon la revendication 1, caractérisé en ce que le métal léger appartient au groupe formé par les métaux alcalins et alcalino-terreux.Packaging according to claim 1, characterized in that the light metal belongs to the group formed by alkali and alkaline earth metals. Emballage selon la revendication 1, caractérisé en ce que le rapport de la section de l'ouverture à la section extérieure du tube est compris entre 1/10 et 1/1000.Packaging according to claim 1, characterized in that the ratio of the section of the opening to the outside section of the tube is between 1/10 and 1/1000. Emballage selon la revendication 1, caractérisé en ce que le métal léger est placé à l'intérieur du tube sous forme de fil.Packaging according to claim 1, characterized in that the light metal is placed inside the tube in the form of wire. Emballage selon la revendication 5, caractérisé en ce que le métal léger est entouré par une gaine en aluminium.Packaging according to claim 5, characterized in that the light metal is surrounded by an aluminum sheath.
EP91420072A 1990-03-07 1991-03-04 Package for introducing light metal into a molten aluminium alloy Expired - Lifetime EP0446152B1 (en)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
FR9003360A FR2659354B1 (en) 1990-03-07 1990-03-07 PACKAGING FOR THE INTRODUCTION OF LIGHT METAL INTO AN ALUMINUM ALLOY IN A LIQUID STATE.
FR9003360 1990-03-07

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EP0446152A1 true EP0446152A1 (en) 1991-09-11
EP0446152B1 EP0446152B1 (en) 1995-03-01

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EP91420072A Expired - Lifetime EP0446152B1 (en) 1990-03-07 1991-03-04 Package for introducing light metal into a molten aluminium alloy

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US (1) US5094432A (en)
EP (1) EP0446152B1 (en)
JP (1) JP2565425B2 (en)
KR (1) KR910016949A (en)
AT (1) ATE119212T1 (en)
CA (1) CA2036280C (en)
DE (1) DE69107634T2 (en)
DK (1) DK0446152T3 (en)
ES (1) ES2068544T3 (en)
FR (1) FR2659354B1 (en)
GR (1) GR3015246T3 (en)

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
AU646346B2 (en) * 1991-07-05 1994-02-17 Vaw Aluminium Ag Process for the mixing of reactive melts and a device for the application of the process
EP0688881A1 (en) * 1994-05-09 1995-12-27 "VLAAMSE INSTELLING VOOR TECHNOLOGISCH ONDERZOEK", afgekort "V.I.T.O." Method for adding traces of sodium to a melt of aluminium or an aluminium alloy

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KR20030032281A (en) * 2001-10-17 2003-04-26 엘지전선 주식회사 The manufacturing method of aluminium alloy which used in overhead transmission line
CN102477476A (en) * 2010-11-20 2012-05-30 山西太钢不锈钢股份有限公司 Method for feeding refractory alloy to vacuum induction furnace
CN103014233A (en) * 2013-01-16 2013-04-03 裴忠飞 Sealing method of metallurgy material
FI126583B (en) * 2014-03-31 2017-02-28 Outotec Finland Oy Process and carrier for transporting reducing agent such as coke into a metallurgical furnace and production process for the carrier
CN109929960A (en) * 2019-04-15 2019-06-25 南京浦江合金材料股份有限公司 A kind of silicon strontium inoculant preparation process improving recovery rate
CN110396571A (en) * 2019-07-15 2019-11-01 湖州久立永兴特种合金材料有限公司 A kind of method of deoxidation of steel alloy vacuum induction furnace smelting

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DE2055560A1 (en) * 1970-11-12 1972-05-18 Jürgens, Walter, Dr.-Ing., 5101 Richterich Three layer packaging for sodium - for melt additions
US3848391A (en) * 1973-03-05 1974-11-19 Degussa Process for gas-free packaging of molten alkali metal
AT331527B (en) * 1974-05-14 1976-08-25 Barth & Co Ohg Erich PROCESS FOR REFINING ALUMINUM-SILICON ALLOYS
US4199353A (en) * 1977-01-18 1980-04-22 Canron Inc. Molten metal treatment
EP0041680A1 (en) * 1980-06-10 1981-12-16 Klöckner-Humboldt-Deutz Aktiengesellschaft Apparatus for introducing highly reactive substances to a molten-metal bath

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IT1218464B (en) * 1985-01-17 1990-04-19 Kinglor Ltd PROCEDURE FOR THE AUTOMATIC FORMING OF A CONTINUOUS METALLIC TUBE FILLED WITH FERROLEGHE AND OTHER POWDERED MATERIALS (ANIMATED WIRE) AND ITS DIRECT INTRODUCTION INTO THE LIQUID METAL OF A LADDER, AND RELATIVE FORMING EQUIPMENT

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GB709993A (en) * 1951-04-06 1954-06-02 Julius S W Bates Below-surface treatment of molten metals
DE2055560A1 (en) * 1970-11-12 1972-05-18 Jürgens, Walter, Dr.-Ing., 5101 Richterich Three layer packaging for sodium - for melt additions
US3848391A (en) * 1973-03-05 1974-11-19 Degussa Process for gas-free packaging of molten alkali metal
AT331527B (en) * 1974-05-14 1976-08-25 Barth & Co Ohg Erich PROCESS FOR REFINING ALUMINUM-SILICON ALLOYS
US4199353A (en) * 1977-01-18 1980-04-22 Canron Inc. Molten metal treatment
EP0041680A1 (en) * 1980-06-10 1981-12-16 Klöckner-Humboldt-Deutz Aktiengesellschaft Apparatus for introducing highly reactive substances to a molten-metal bath

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
AU646346B2 (en) * 1991-07-05 1994-02-17 Vaw Aluminium Ag Process for the mixing of reactive melts and a device for the application of the process
EP0688881A1 (en) * 1994-05-09 1995-12-27 "VLAAMSE INSTELLING VOOR TECHNOLOGISCH ONDERZOEK", afgekort "V.I.T.O." Method for adding traces of sodium to a melt of aluminium or an aluminium alloy
BE1008380A3 (en) * 1994-05-09 1996-04-02 Vito Process for the addition of trace sodium to a melt of aluminum or an aluminum alloy.

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EP0446152B1 (en) 1995-03-01
JPH04224073A (en) 1992-08-13
ES2068544T3 (en) 1995-04-16
FR2659354B1 (en) 1992-05-07
JP2565425B2 (en) 1996-12-18
CA2036280C (en) 1996-09-03
DE69107634T2 (en) 1995-07-06
GR3015246T3 (en) 1995-06-30
DE69107634D1 (en) 1995-04-06
DK0446152T3 (en) 1995-05-22
KR910016949A (en) 1991-11-05
FR2659354A1 (en) 1991-09-13
US5094432A (en) 1992-03-10
ATE119212T1 (en) 1995-03-15
CA2036280A1 (en) 1991-09-08

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