EP0100289A2 - Process for the electromagnetical casting of metals using at least one magnetical field differing from another bordering magnetical field - Google Patents
Process for the electromagnetical casting of metals using at least one magnetical field differing from another bordering magnetical field Download PDFInfo
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- EP0100289A2 EP0100289A2 EP83420124A EP83420124A EP0100289A2 EP 0100289 A2 EP0100289 A2 EP 0100289A2 EP 83420124 A EP83420124 A EP 83420124A EP 83420124 A EP83420124 A EP 83420124A EP 0100289 A2 EP0100289 A2 EP 0100289A2
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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
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- the present invention relates to an electromagnetic metal casting process in which at least one magnetic field different from the confinement field is made to act.
- the metal thus confined When the metal thus confined is subjected to cooling by a suitable coolant, it then solidifies according to the shape imposed by the field.
- ingots are generally obtained having a better surface condition which, in certain cases, can be used directly in dimensional transformation operations without having to resort to particular surface treatments, such as scalping for example.
- the confinement in confinement of the liquid metal is obtained by application of an electromagnetic field created by means of an annular inductor supplied by an alternating current of frequency generally between 500 and 5000 hertz.
- the inductor exerts its action on the liquid metal which is brought in by a distributor and which escapes in the form of a column to the lower part of a screen of section substantially close to that of the ingot to be cast and of the same axis.
- This action results not only in the confining effect, but also in rotational movements of the liquid metal at the periphery of the ingot in a plane passing through its axis and directed from the bottom up when one moves away from this axis.
- both a stationary field and a variable field of suitable frequency are made to act both to produce radial vibrations within the metal not yet solidified and to limit stirring.
- This stationary field has a substantially vertical direction and it is created by an annular coil supplied with direct current comprising a number of turns sufficient to reach values less than 0.5 tesla.
- This coil has a horizontal section close to that of the screen, and it is placed above the latter and concentrically with respect to the axis of the ingot.
- This field can be modified by adding an annular iron core inside the coil.
- the invention is not limited to the sole application of a stationary field, but also to that of a variable field of frequency suitable for causing radial vibrations and limiting stirring.
- This variable field of direction parallel to the axis of the ingot is obtained by means of a coil supplied by an alternating current of low frequency, that is to say between 5 and 100 hertz. It is obvious that, for reasons of convenience, the industrial frequency of 50 Hz is generally chosen.
- This coil also annular, is placed concentrically inside the coil supplied with direct current and at an average height situated at the limit between the screen and this last coil.
- variable field created either by the coil or by the screen extends its electromagnetic action to all of the liquid metal, so that the rotational movement of the metal is no longer limited to the vicinity from the periphery of the ingot as with the confinement field, but manifests itself up to the axis of the ingot.
- the rotation takes place in the opposite direction to that produced by the confinement field: it results from these antagonistic effects, a reduction in the amplitude of the vortices and of the mixing observed in conventional electromagnetic casting. This action, which therefore concerns the entire section of the ingot, results in a refinement of the grain and greater homogeneity of the crystallization.
- variable field also plays other functions. It gives rise in metal to an induced current whose lines of force are concentric circles. Under the combined action of the stationary field and the induced current, forces of radial direction and of frequency N equal to the frequency of the variable field develop. Similarly, by interaction of the variable field and the induced current, both of frequency N, also arise variable radial forces, but of frequency 2 N. These forced vibrations have the effect of producing a refinement of the grain.
- variable field from a coil supplied with an alternating current of frequency greater than 100 hertz.
- the penetration of the electromagnetic field into the. metal will be all the more limited as the frequency is high.
- the combined action of the stationary field and the induced current is then very reduced and the forced vibrations, practically non-existent.
- FIG. 1 a section through a vertical plane passing through the axis of the ingot, of an electromagnetic casting device along the prior art, and in Figure 2, the same section of the device according to the invention.
- an annular coil placed above the screen was supplied with a direct voltage of 24 volts, by a current of 17,500 amp-turns to create a stationary field of 0.04 tesla.
- Another coil, placed inside the first, at a height close to the top of the screen, was supplied at a voltage of 75 volts, by a current of 3800 ampere-turns, having a period of 50 hertz, for create a variable field.
- the present invention finds its application in the electromagnetic casting of metals and alloys in the form of plates, billets, ingots, etc. when it is sought to improve both the structure and the surface condition of the cast products.
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Abstract
Description
La présente 'invention est relative à un procédé de coulée électromagnétique de métaux dans lequel on fait agir au moins un champ magnétique différent du champ de confinement.The present invention relates to an electromagnetic metal casting process in which at least one magnetic field different from the confinement field is made to act.
Il est connu par le brevet français 1.509.962 que l'on peut obtenir des lingots d'acier ou d'aluminium par coulée électromagnétique. Cette technique consiste à engendrer autour d'une colonne de métal en fusion, un champ électromagnétique alternatif au moyen d'un inducteur annulaire.It is known from French patent 1,509,962 that one can obtain steel or aluminum ingots by electromagnetic casting. This technique consists in generating an alternating electromagnetic field around a column of molten metal by means of an annular inductor.
Sous l'action de ce champ, apparaissent dans le métal des forces centripètes qui empêchent son étalement et lui confèrent une certaine géométrie.Under the action of this field, centripetal forces appear in the metal which prevent its spreading and give it a certain geometry.
Lorsque le métal ainsi confiné est soumis à un refroidissement par un agent frigoporteur convenable, il se solidifie alors suivant la forme imposée par le champ.When the metal thus confined is subjected to cooling by a suitable coolant, it then solidifies according to the shape imposed by the field.
A la différence de la coulée classique, la solidification ne se produit pas contre les parois d'un moule, mais en dehors de tout contact avec un matériau solide. Dans ces conditions, on obtient généralement des lingots ayant un meilleur état de surface qui, dans certains cas, peuvent être utilisés directement dans des opérations de transformation dimensionnelle sans avoir recours à des traitements particuliers de surface, tels que le scalpage par exemple.Unlike conventional casting, solidification does not occur against the walls of a mold, but outside of any contact with a solid material. Under these conditions, ingots are generally obtained having a better surface condition which, in certain cases, can be used directly in dimensional transformation operations without having to resort to particular surface treatments, such as scalping for example.
Cependant, l'application de cette technique n'est pas sans inconvénients. On a, en effet, constaté que le champ électromagnétique de confinement provoque des tourbillons et un brassage excessif du métal liquide. Ceci entraîne, d'une part au cours du refroidissement, une instabilité du processus de cristallisation qui se traduit par une hétérogénéité de structure et. la présence de grains de morphologie différente, d'autre part, l'apparition de piqûres à la surface des lingots dues en partie à la dislocation du film d'oxyde recouvrant le métal.et à sa dissémination dans la masse de métal encore liquide.However, the application of this technique is not without drawbacks. It has in fact been found that the electromagnetic confinement field causes vortices and excessive mixing of the liquid metal. This leads, on the one hand during cooling, to an instability of the crystallization process which results in a heterogeneity of structure and. the presence of grains of different morphology, on the other hand, the appearance of pitting on the surface of the ingots due in part to the dislocation of the oxide film covering the metal. and to its dissemination in the mass of still liquid metal.
La demanderesse, consciente des avantages que procurait malgré tout la coulée électromagnétique, a cherché à remédier à ces défauts.The plaintiff, aware of the advantages which despite all the electromagnetic casting, sought to remedy these defects.
Plusieurs séries d'essais l'ont amenée à mettre au point un procédé dans lequel on fait agir, au cours de la coulée, au moins un champ magnétique différent du champ variable de confinement et qui se singularise par le fait que l'on fait agir simultanément un champ stationnaire et un champ variable de fréquence convenable pour, à la fois, produire des vibrations radiales au sein du métal non encore solidifié et limiter le brassage.Several series of tests have led it to develop a process in which at least one magnetic field different from the variable confining field is made to act during casting, which is distinguished by the fact that it is act simultaneously a stationary field and a variable field of suitable frequency to, at the same time, produce radial vibrations within the metal not yet solidified and limit the mixing.
Dans la coulée électromagnétique, le maintien en confinement du métal liquide est obtenu par application d'un champ électromagnétique créé au moyen d'un inducteur annulaire alimenté par un courant alternatif de fréquence généralement comprise entre 500 et 5000 hertz. L'inducteur exerce son action sur le métal liquide qui est amené par un distributeur et qui s'échappe sous forme de colonne à la partie inférieure d'un écran de section sensiblement voisine de celle du lingot à couler et de même axe.In electromagnetic casting, the confinement in confinement of the liquid metal is obtained by application of an electromagnetic field created by means of an annular inductor supplied by an alternating current of frequency generally between 500 and 5000 hertz. The inductor exerts its action on the liquid metal which is brought in by a distributor and which escapes in the form of a column to the lower part of a screen of section substantially close to that of the ingot to be cast and of the same axis.
Cette action se traduit non seulement par l'effet de confinement, mais aussi par des mouvements de rotation du métal liquide à la périphérie du lingot dans un plan passant par son axe et dirigé de bas en haut quand on s'éloigne de cet axe.This action results not only in the confining effect, but also in rotational movements of the liquid metal at the periphery of the ingot in a plane passing through its axis and directed from the bottom up when one moves away from this axis.
Dans le procédé suivant l'invention, on fait agir à la fois un champ stationnaire et un champ variable de fréquence convenable pour, à la fois produire des vibrations radiales au sein du métal non encore solidifié et limiter le brassage.In the process according to the invention, both a stationary field and a variable field of suitable frequency are made to act both to produce radial vibrations within the metal not yet solidified and to limit stirring.
Ce champ stationnaire a une direction sensiblement verticale et il est créé par une bobine annulaire alimentée en courant continu comportant un nombre de spires suffisant pour atteindre des valeurs inférieures à 0,5 tesla. Cette bobine a une section horizontale voisine de celle de l'écran, et elle est placée au-dessus de ce dernier et de façon concentrique par rapport à l'axe du lingot. Ce champ peut être modifié par adjonction à l'intérieur de la bobine d'un noyau en fer de forme annulaire.This stationary field has a substantially vertical direction and it is created by an annular coil supplied with direct current comprising a number of turns sufficient to reach values less than 0.5 tesla. This coil has a horizontal section close to that of the screen, and it is placed above the latter and concentrically with respect to the axis of the ingot. This field can be modified by adding an annular iron core inside the coil.
Sous l'action combinée de ce champ et du champ de confinement, on constate déjà un effet bénéfique sur l'état de surface et sur la structure et l'homogénéité du métal dans la zone corticale du produit coulé.Under the combined action of this field and the confinement field, we already notes a beneficial effect on the surface condition and on the structure and homogeneity of the metal in the cortical area of the cast product.
Cependant, l'invention ne se limite pas à la seule application d'un champ stationnaire, mais également à celle d'un champ variable de fréquence convenable pour provoquer des vibrations radiales et limiter le brassage.However, the invention is not limited to the sole application of a stationary field, but also to that of a variable field of frequency suitable for causing radial vibrations and limiting stirring.
Ce champ variable de direction parallèle à l'axe du lingot est obtenu au moyen d'une bobine alimentée par un courant alternatif de basse fréquence, c'est-à-dire compris entre 5 et 100 hertz. Il est évident que, pour des raisons de commodité, on choisit généralement la fréquence industrielle de 50 Hz.This variable field of direction parallel to the axis of the ingot is obtained by means of a coil supplied by an alternating current of low frequency, that is to say between 5 and 100 hertz. It is obvious that, for reasons of convenience, the industrial frequency of 50 Hz is generally chosen.
Cette bobine, également annulaire, est placée concentriquement à l'intérieur de la bobine alimentée en courant continu et à une hauteur moyenne située à la limite entre l'écran et cette dernière bobine.This coil, also annular, is placed concentrically inside the coil supplied with direct current and at an average height situated at the limit between the screen and this last coil.
Il est possible de supprimer cette bobine en alimentant directement l'écran en courant alternatif et qui devient alors générateur de champ variable, et cette substitution rend plus aisée l'introduction d'un noyau en fer dans la bobine alimentée en courant continu.It is possible to remove this coil by directly supplying the screen with alternating current, which then becomes a variable field generator, and this substitution makes it easier to introduce an iron core into the coil supplied with direct current.
En raison de la basse fréquence utilisée, le champ variable créé soit par la bobine soit par l'écran, étend son action électromagnétique à l'ensemble du métal liquide, de sorte que le mouvement de rotation du métal n'est plus limité au voisinage de la périphérie du lingot comme avec le champ de confinement, mais se manifeste jusqu'à l'axe du lingot. De plus, la rotation s'effectue dans un sens inverse de celui produit par le champ de confinement : il résulte de ces effets antagonistes, une réduction de l'ampleur des tourbillons et du brassage constatés dans la coulée électromagnétique classique. Cette action, qui concerne donc toute la section du lingot, se traduit par un affinage du grain et une homogénéité plus grande de la cristallisation. Corrélativement, la vitesse de transfert du métal dans les tourbillons diminue et la dislocation de la peau d'oxyde, même si elle n'est pas complètement supprimée, n'est plus suivie d'une dissémination généralisée dans le métal des particules qui en résultent, d'où une atténuation du phénomène de piqûres.Due to the low frequency used, the variable field created either by the coil or by the screen, extends its electromagnetic action to all of the liquid metal, so that the rotational movement of the metal is no longer limited to the vicinity from the periphery of the ingot as with the confinement field, but manifests itself up to the axis of the ingot. In addition, the rotation takes place in the opposite direction to that produced by the confinement field: it results from these antagonistic effects, a reduction in the amplitude of the vortices and of the mixing observed in conventional electromagnetic casting. This action, which therefore concerns the entire section of the ingot, results in a refinement of the grain and greater homogeneity of the crystallization. Correlatively, the speed of transfer of the metal in the vortices decreases and the dislocation of the oxide skin, even if it is not completely removed, is no longer followed by a generalized dissemination in the metal of the particles which result therefrom. , hence a reduction in the phenomenon of bites.
Mais le champ variable, joue également d'autres fonctions. Il donne naissance dans le métal à un courant induit dont les lignes de force sont des cercles concentriques. Sous l'action combinée du champ stationnaire et du courant induit, se développent des forces de direction radiale et de fréquence N égale à la fréquence du champ variable. De même, par intéraction du champ variable et du courant induit, tous deux de fréquence N, naissent également des forces radiales variables, mais de fréquence 2 N. Ces vibrations forcées ont pour effet de produire un affinage du grain.But the variable field also plays other functions. It gives rise in metal to an induced current whose lines of force are concentric circles. Under the combined action of the stationary field and the induced current, forces of radial direction and of frequency N equal to the frequency of the variable field develop. Similarly, by interaction of the variable field and the induced current, both of frequency N, also arise variable radial forces, but of
Selon une variante de l'invention, il est possible de créer le champ variable à partir d'une bobine alimentée avec un courant alternatif de fréquence supérieure à 100 hertz. Dans ce cas, la pénétration du champ électromagnétique dans le. métal va être d'autant plus limitée que la fréquence est élevée. L'action combinée du champ stationnaire et du courant induit se trouve alors très réduite et les vibrations forcées, pratiquement inexistantes.According to a variant of the invention, it is possible to create the variable field from a coil supplied with an alternating current of frequency greater than 100 hertz. In this case, the penetration of the electromagnetic field into the. metal will be all the more limited as the frequency is high. The combined action of the stationary field and the induced current is then very reduced and the forced vibrations, practically non-existent.
Néanmoins, on peut quand même obtenir des effets de vibration en utilisant la résonance.However, you can still get vibration effects using resonance.
En effet, en fonction des dimensions des produits coulés, de la vitesse de coulée, de la nature des métaux et alliages mis en oeuvre, il existe des fréquences de vibration propres du métal liquide, des dendrites en cours de formation ou de la masse solide, dont la valeur peut être déduite par le calcul ou par mesure à l'aide de capteurs adéquats. Si on ajuste la fréquence du champ variable à la valeur de ces fréquences fondamentales ou harmoniques, on développe la formation de vibrations de résonance dont les effets sont aussi notables sur l'affinage du grain.Indeed, depending on the dimensions of the cast products, the casting speed, the nature of the metals and alloys used, there are specific vibration frequencies of the liquid metal, of the dendrites being formed or of the solid mass. , whose value can be deduced by calculation or by measurement using suitable sensors. If we adjust the frequency of the variable field to the value of these fundamental or harmonic frequencies, we develop the formation of resonance vibrations whose effects are also notable on the refinement of the grain.
Dans ce cas, il n'est pas toujours nécessaire de recourir à une bobine spéciale pour créer le champ variable car on peut, dans certaines conditions, obtenir le phénomène de résonance à partir du champ électromagnétique de confinement lui-même.In this case, it is not always necessary to use a special coil to create the variable field because one can, under certain conditions, obtain the resonance phenomenon from the electromagnetic confinement field itself.
L'invention sera mieux comprise à l'aide des dessins qui accompagnent la présente demande, et sur lesquels on peut voir en figure 1 une coupe par un plan vertical passant par l'axe du lingot, d'un dispositif de coulée électromagnétique suivant l'art antérieur, et en figure 2, la même coupe du dispositif suivant l'invention.The invention will be better understood with the aid of the drawings which accompany the present application, and on which one can see in FIG. 1 a section through a vertical plane passing through the axis of the ingot, of an electromagnetic casting device along the prior art, and in Figure 2, the same section of the device according to the invention.
Sur la figure 1, on voit un lingot de métal (1) dont la partie supérieure (2) est à l'état liquide. Ce lingot est entouré par un inducteur (3) qui crée le champ électromagnétique de confinement, par un écran (4) et un système de refroidissement (5). Le champ crée dans le métal liquide des tourbillons (6).In Figure 1, we see a metal ingot (1) whose part upper (2) is in the liquid state. This ingot is surrounded by an inductor (3) which creates the electromagnetic confinement field, by a screen (4) and a cooling system (5). The field creates swirls in the liquid metal (6).
Sur la figure 2, on retrouve les mêmes moyens que ci-dessus auxquels sont ajoutés les moyens suivant l'invention, à savoir, une bobine (7) alimentée en courant continu et une bobine (8) alimentée en courant alternatif. Le champ créé par cette dernière bobine produit une circulation du métal suivant la trajectoire (9), tandis que se développent des vibrations radiales représentées par (10).In Figure 2, there are the same means as above to which are added the means according to the invention, namely, a coil (7) supplied with direct current and a coil (8) supplied with alternating current. The field created by this last coil produces a circulation of the metal along the trajectory (9), while radial vibrations develop represented by (10).
L'invention peut être illustrée à l'aide de l'exemple de réalisation suivant :
- On a coulé une billette de 0 350 mm en alliage d'aluminium 2024 affiné avec de l'AT5B à raison de 1 kg/tonne d'aluminium. Une première partie a été réalisée avec àpplication d'un champ de confinement de fréquence 2000 hertz créé sous une tension de 28 volts et une intensité de 4900 ampères.
- A 0 350 mm billet of 2024 aluminum alloy refined with AT5B was poured at a rate of 1 kg / tonne of aluminum. A first part was carried out with the application of a confinement field of frequency 2000 hertz created under a voltage of 28 volts and an intensity of 4900 amps.
Sur une deuxième partie,on a appliqué le procédé selon l'invention, c'est-à-dire qu'on a alimenté une bobine annulaire placée au-dessus de l'écran sous une tension continue de 24 volts, par un courant de 17 500 ampère-tours pour créer un champ stationnaire de 0,04 tesla. Une autre bobine, placée à l'intérieur de la première, à une hauteur voisine du haut de l'écran, était alimentée sous une tension de 75 volts, par un courant de 3800 ampère-tours, ayant une période de 50 hertz, pour créer un champ variable.On a second part, the method according to the invention was applied, that is to say that an annular coil placed above the screen was supplied with a direct voltage of 24 volts, by a current of 17,500 amp-turns to create a stationary field of 0.04 tesla. Another coil, placed inside the first, at a height close to the top of the screen, was supplied at a voltage of 75 volts, by a current of 3800 ampere-turns, having a period of 50 hertz, for create a variable field.
On a constaté que la deuxième partie de la billette présentait uniquement des grains équiaxes dendritiques, alors que, dans la première partie, étaient présents également des grains équiaxes sans dendrites ; de plus, le nombre de grains avait également été multiplié par 8, tandis que l'état de surface s'était sensiblement amélioré, ne présentant ni piqûres, ni rugosités.It was found that the second part of the billet presented only dendritic equiaxes grains, while, in the first part, there were also equiaxes grains without dendrites; moreover, the number of grains had also been multiplied by 8, while the surface condition had improved appreciably, presenting neither pits nor roughness.
La présente invention trouve son application dans la coulée électromagnétique des métaux et alliages sous forme de plaques, billettes, lingots etc... quand on cherche à améliorer à la fois la structure et l'état de surface des produits coulés.The present invention finds its application in the electromagnetic casting of metals and alloys in the form of plates, billets, ingots, etc. when it is sought to improve both the structure and the surface condition of the cast products.
Claims (9)
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| AT83420124T ATE16771T1 (en) | 1982-07-23 | 1983-07-19 | METHOD OF ELECTROMAGNETIC CASTING OF METALS UNDER THE ACTION OF AT LEAST ONE MAGNETIC FIELD DIFFERENT FROM A CONTAINING FIELD. |
Applications Claiming Priority (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| FR8213220 | 1982-07-23 | ||
| FR8213220A FR2530510B1 (en) | 1982-07-23 | 1982-07-23 | ELECTROMAGNETIC CASTING PROCESS FOR METALS IN WHICH AT LEAST ONE MAGNETIC FIELD DIFFERENT FROM THE CONTAINMENT FIELD |
Publications (3)
| Publication Number | Publication Date |
|---|---|
| EP0100289A2 true EP0100289A2 (en) | 1984-02-08 |
| EP0100289A3 EP0100289A3 (en) | 1984-04-11 |
| EP0100289B1 EP0100289B1 (en) | 1985-12-04 |
Family
ID=9276427
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| EP83420124A Expired EP0100289B1 (en) | 1982-07-23 | 1983-07-19 | Process for the electromagnetical casting of metals using at least one magnetical field differing from another bordering magnetical field |
Country Status (9)
| Country | Link |
|---|---|
| US (1) | USRE32529E (en) |
| EP (1) | EP0100289B1 (en) |
| JP (1) | JPS5935865A (en) |
| AT (1) | ATE16771T1 (en) |
| AU (1) | AU570210B2 (en) |
| CA (1) | CA1203069A (en) |
| DE (1) | DE3361420D1 (en) |
| FR (1) | FR2530510B1 (en) |
| SU (1) | SU1416050A3 (en) |
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| EP0592360A1 (en) * | 1992-10-06 | 1994-04-13 | Alusuisse-Lonza Services Ag | Machine for vertical continuous casting in a magnetic field |
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| FR2530510B1 (en) * | 1982-07-23 | 1985-07-05 | Cegedur | ELECTROMAGNETIC CASTING PROCESS FOR METALS IN WHICH AT LEAST ONE MAGNETIC FIELD DIFFERENT FROM THE CONTAINMENT FIELD |
| US5246060A (en) * | 1991-11-13 | 1993-09-21 | Aluminum Company Of America | Process for ingot casting employing a magnetic field for reducing macrosegregation and associated apparatus and ingot |
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| US7024342B1 (en) | 2000-07-01 | 2006-04-04 | Mercury Marine | Thermal flow simulation for casting/molding processes |
| US6611736B1 (en) | 2000-07-01 | 2003-08-26 | Aemp Corporation | Equal order method for fluid flow simulation |
| US7255828B2 (en) * | 2002-12-06 | 2007-08-14 | Marcin Stanislaw Kasprzak | Electromagnetic method and apparatus for treatment of engineering materials, products, and related processes |
| JP6234841B2 (en) * | 2014-02-24 | 2017-11-22 | 株式会社神戸製鋼所 | Continuous casting equipment for ingots made of titanium or titanium alloy |
| CN112570696B (en) | 2014-05-21 | 2022-07-19 | 诺维尔里斯公司 | Mixing injector nozzle and flow control device |
Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| DE1807435A1 (en) * | 1968-11-07 | 1970-10-01 | Demag Ag | Steel extrusion method |
| EP0015870A1 (en) * | 1979-03-07 | 1980-09-17 | Schweizerische Aluminium AG | Electro-magnetic mould for continuous casting |
| EP0040383A1 (en) * | 1980-05-19 | 1981-11-25 | Asea Ab | Method and apparatus for stirring the molten metal in a continuous-casting strand |
| EP0053810A1 (en) * | 1980-12-04 | 1982-06-16 | Olin Corporation | An apparatus and process for electromagnetically shaping a molten material within a narrow containment zone |
Family Cites Families (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| DE2965366D1 (en) * | 1978-07-28 | 1983-06-16 | Concast Holding Ag | Method for continuously casting metal in a mould and influence of an electro-magnetic field |
| US4319625A (en) * | 1980-01-14 | 1982-03-16 | Olin Corporation | Electromagnetic casting process utilizing an active transformer-driven copper shield |
| FR2530510B1 (en) * | 1982-07-23 | 1985-07-05 | Cegedur | ELECTROMAGNETIC CASTING PROCESS FOR METALS IN WHICH AT LEAST ONE MAGNETIC FIELD DIFFERENT FROM THE CONTAINMENT FIELD |
| US4544016A (en) * | 1983-04-21 | 1985-10-01 | Yetselev Zinovy N | Continuous casting process and apparatus |
-
1982
- 1982-07-23 FR FR8213220A patent/FR2530510B1/en not_active Expired
-
1983
- 1983-07-19 AT AT83420124T patent/ATE16771T1/en not_active IP Right Cessation
- 1983-07-19 DE DE8383420124T patent/DE3361420D1/en not_active Expired
- 1983-07-19 EP EP83420124A patent/EP0100289B1/en not_active Expired
- 1983-07-20 JP JP58132637A patent/JPS5935865A/en active Granted
- 1983-07-21 SU SU833621755A patent/SU1416050A3/en active
- 1983-07-21 AU AU17164/83A patent/AU570210B2/en not_active Ceased
- 1983-07-22 CA CA000432976A patent/CA1203069A/en not_active Expired
-
1986
- 1986-05-21 US US06/865,375 patent/USRE32529E/en not_active Expired - Fee Related
Patent Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| DE1807435A1 (en) * | 1968-11-07 | 1970-10-01 | Demag Ag | Steel extrusion method |
| EP0015870A1 (en) * | 1979-03-07 | 1980-09-17 | Schweizerische Aluminium AG | Electro-magnetic mould for continuous casting |
| EP0040383A1 (en) * | 1980-05-19 | 1981-11-25 | Asea Ab | Method and apparatus for stirring the molten metal in a continuous-casting strand |
| EP0053810A1 (en) * | 1980-12-04 | 1982-06-16 | Olin Corporation | An apparatus and process for electromagnetically shaping a molten material within a narrow containment zone |
Cited By (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| FR2570304A1 (en) * | 1984-09-19 | 1986-03-21 | Cegedur | METHOD FOR ADJUSTING THE LEVEL OF THE CONTACT LINE OF THE FREE METAL SURFACE WITH THE LINGOTIERE IN A VERTICAL CASTING |
| WO1986001756A1 (en) * | 1984-09-19 | 1986-03-27 | Cegedur Societe De Transformation De L'aluminium P | Method for regulating the level of the contact line of the free metal surface with the ingot mould in a continuous vertical casting |
| EP0592360A1 (en) * | 1992-10-06 | 1994-04-13 | Alusuisse-Lonza Services Ag | Machine for vertical continuous casting in a magnetic field |
| CH688129A5 (en) * | 1992-10-06 | 1997-05-30 | Alusuisse Lonza Services Ag | Casting machine for the vertical continuous casting in a magnetic field. |
| WO2001038022A1 (en) * | 1999-11-25 | 2001-05-31 | Usinor | Method for vertical continuous casting of metals using electromagnetic fields and casting installation therefor |
| FR2801523A1 (en) * | 1999-11-25 | 2001-06-01 | Usinor | Method and installation for the vertical continuous casting of metal products using electromagnetic fields to control the shape of the liquid metal meniscus |
| US6619377B1 (en) | 1999-11-25 | 2003-09-16 | The Japan Research And Development Center For Metals | Method for vertical continuous casting of metals using electromagnetic fields and casting installation therefor |
| CN109311081A (en) * | 2016-05-30 | 2019-02-05 | 伊苏瓦尔肯联铝业 | The method for producing plate ingot casting by vertical casting aluminium alloy |
Also Published As
| Publication number | Publication date |
|---|---|
| ATE16771T1 (en) | 1985-12-15 |
| JPS5935865A (en) | 1984-02-27 |
| SU1416050A3 (en) | 1988-08-07 |
| AU570210B2 (en) | 1988-03-10 |
| DE3361420D1 (en) | 1986-01-16 |
| JPH0160337B2 (en) | 1989-12-22 |
| EP0100289A3 (en) | 1984-04-11 |
| FR2530510A1 (en) | 1984-01-27 |
| AU1716483A (en) | 1984-01-26 |
| CA1203069A (en) | 1986-04-15 |
| EP0100289B1 (en) | 1985-12-04 |
| USRE32529E (en) | 1987-10-27 |
| FR2530510B1 (en) | 1985-07-05 |
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