EP3622781B1 - Procédé de fusion par lévitation au moyen d'un élément annulaire - Google Patents

Procédé de fusion par lévitation au moyen d'un élément annulaire Download PDF

Info

Publication number
EP3622781B1
EP3622781B1 EP19739554.4A EP19739554A EP3622781B1 EP 3622781 B1 EP3622781 B1 EP 3622781B1 EP 19739554 A EP19739554 A EP 19739554A EP 3622781 B1 EP3622781 B1 EP 3622781B1
Authority
EP
European Patent Office
Prior art keywords
annular element
batch
casting
melting
casting mold
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Active
Application number
EP19739554.4A
Other languages
German (de)
English (en)
Other versions
EP3622781A1 (fr
Inventor
Sergejs SPITANS
Henrik Franz
Björn SEHRING
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
ALD Vacuum Technologies GmbH
Original Assignee
ALD Vacuum Technologies GmbH
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by ALD Vacuum Technologies GmbH filed Critical ALD Vacuum Technologies GmbH
Priority to PL19739554T priority Critical patent/PL3622781T3/pl
Priority to SI201930002T priority patent/SI3622781T1/sl
Publication of EP3622781A1 publication Critical patent/EP3622781A1/fr
Application granted granted Critical
Publication of EP3622781B1 publication Critical patent/EP3622781B1/fr
Active legal-status Critical Current
Anticipated expiration legal-status Critical

Links

Images

Classifications

    • H—ELECTRICITY
    • H05—ELECTRIC TECHNIQUES NOT OTHERWISE PROVIDED FOR
    • H05B—ELECTRIC HEATING; ELECTRIC LIGHT SOURCES NOT OTHERWISE PROVIDED FOR; CIRCUIT ARRANGEMENTS FOR ELECTRIC LIGHT SOURCES, IN GENERAL
    • H05B6/00—Heating by electric, magnetic or electromagnetic fields
    • H05B6/02—Induction heating
    • H05B6/36—Coil arrangements
    • H05B6/365—Coil arrangements using supplementary conductive or ferromagnetic pieces
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B22—CASTING; POWDER METALLURGY
    • B22D—CASTING OF METALS; CASTING OF OTHER SUBSTANCES BY THE SAME PROCESSES OR DEVICES
    • B22D39/00—Equipment for supplying molten metal in rations
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B22—CASTING; POWDER METALLURGY
    • B22D—CASTING OF METALS; CASTING OF OTHER SUBSTANCES BY THE SAME PROCESSES OR DEVICES
    • B22D39/00—Equipment for supplying molten metal in rations
    • B22D39/003—Equipment for supplying molten metal in rations using electromagnetic field
    • H—ELECTRICITY
    • H05—ELECTRIC TECHNIQUES NOT OTHERWISE PROVIDED FOR
    • H05B—ELECTRIC HEATING; ELECTRIC LIGHT SOURCES NOT OTHERWISE PROVIDED FOR; CIRCUIT ARRANGEMENTS FOR ELECTRIC LIGHT SOURCES, IN GENERAL
    • H05B6/00—Heating by electric, magnetic or electromagnetic fields
    • H05B6/02—Induction heating
    • H05B6/22—Furnaces without an endless core
    • H05B6/32—Arrangements for simultaneous levitation and heating
    • H—ELECTRICITY
    • H05—ELECTRIC TECHNIQUES NOT OTHERWISE PROVIDED FOR
    • H05B—ELECTRIC HEATING; ELECTRIC LIGHT SOURCES NOT OTHERWISE PROVIDED FOR; CIRCUIT ARRANGEMENTS FOR ELECTRIC LIGHT SOURCES, IN GENERAL
    • H05B6/00—Heating by electric, magnetic or electromagnetic fields
    • H05B6/02—Induction heating
    • H05B6/36—Coil arrangements
    • H05B6/44—Coil arrangements having more than one coil or coil segment
    • H—ELECTRICITY
    • H05—ELECTRIC TECHNIQUES NOT OTHERWISE PROVIDED FOR
    • H05B—ELECTRIC HEATING; ELECTRIC LIGHT SOURCES NOT OTHERWISE PROVIDED FOR; CIRCUIT ARRANGEMENTS FOR ELECTRIC LIGHT SOURCES, IN GENERAL
    • H05B6/00—Heating by electric, magnetic or electromagnetic fields
    • H05B6/02—Induction heating
    • H05B6/22—Furnaces without an endless core
    • H05B6/24—Crucible furnaces
    • H05B6/26—Crucible furnaces using vacuum or particular gas atmosphere

Definitions

  • This invention relates to a levitation melting method and a device for producing cast bodies with an annular element made of a conductive material for introducing the casting of a molten batch into a casting mold.
  • the annular element is introduced into the region of the alternating electromagnetic field between the induction coils in order to pour off the molten charge, and a targeted flow of the melt into the mold is initiated by influencing the induced magnetic field.
  • US 2,686,864 A also describes a method in which a conductive melting material z. B. is suspended in a vacuum under the influence of one or more coils without the use of a crucible.
  • two coaxial coils are used to stabilize the material in suspension. After melting, the material is dropped into a mold or poured off. With the method described there, a 60 g portion of aluminum could be kept in suspension. The molten metal is removed by reducing the field strength so that the melt escapes downwards through the tapered coil. If the field strength is reduced very quickly, the metal falls out of the device in the molten state. It has already been recognized that the "weak spot" of such coil arrangements lies in the middle of the coils, so that the amount of material that can be melted in this way is limited.
  • US 4,578,552 A discloses an apparatus and method for levitation melting.
  • the same coil is used both for heating and for holding the melt, the frequency of the alternating current applied being varied to regulate the heating power, while the current strength is kept constant.
  • suspension melting is avoided.
  • a reactive melt for example of titanium alloys
  • the reaction of a reactive melt with the crucible material excluded, which otherwise forces ceramic crucibles to switch to copper crucibles operated using the cold crucible method.
  • the floating melt is only in contact with the surrounding atmosphere, which is e.g. B. can be vacuum or protective gas. Since there is no fear of a chemical reaction with a crucible material, the melt can also be heated to very high temperatures.
  • the Lorentz force of the coil field must compensate for the weight of the batch in order to be able to keep it in suspension. It pushes the batch upwards out of the coil field.
  • the aim is to reduce the distance between the opposite ferrite poles. The reduction in distance allows the same magnetic field that is required to hold a specific melt weight to be generated with a lower voltage. In this way, the holding efficiency of the system can be improved so that a larger batch can be levitated.
  • the heating efficiency is also increased, since the losses in the induction coils are reduced.
  • the process should allow the use of larger batches and improve the throughput due to improved cycle field efficiency and shorten the cycle times, while ensuring that the casting process continues safely without contact of the melt with the coils or their poles.
  • the volume of the molten batch is preferably sufficient to fill the mold to an extent sufficient for the production of a cast body (“filling volume”). After filling the mold, the mold is allowed to cool or is cooled with coolant, so that the material solidifies in the mold. The cast body can then be removed from the mold.
  • a “conductive material” of a batch is understood to mean a material which has a suitable conductivity in order to inductively heat the material and keep it in suspension.
  • an "electrically conductive material” is to be understood as a material whose electrical conductivity is at least so great that it is possible for the surrounding magnetic field to be influenced by eddy currents induced in the ring-shaped element.
  • a “floating state” is understood to mean a state of complete floating, so that the treated batch has no contact whatsoever with a crucible or a platform or the like.
  • ferrite pole is used synonymously with the term “core made of a ferromagnetic material” in the context of this application.
  • coil and induction coil are used synonymously next to each other.
  • the efficiency of the generated alternating electromagnetic field can be increased by moving the induction coil pairs closer together. This enables even heavier batches to be levitated.
  • the risk of the molten batch touching the coils or ferrite poles with a decreasing free cross section between the coils increases. Such contaminations are to be strictly avoided, since they are difficult and expensive to remove again and therefore result in a longer downtime of the system.
  • the casting of the batch is initiated according to the invention by slowly introducing an annular element made of an electrically conductive material into the Magnetic field is introduced below the levitating batch. The current intensity in the field-generating coils is left unchanged until the casting process has ended.
  • full-area ring-shaped elements are, in addition to a cylindrical tube, also tubular structures based on polygonal elements which form an essentially round structure, such as polygons with five or more corners.
  • non-full-area annular elements are cubes or cuboids, which, like in a lattice model, are only formed by their edges from a conductive material.
  • the casting of the batch is therefore not achieved according to the invention by canceling the Lorentz force of the magnetic field compensating the weight force by reducing the current in the coils or even completely switching off the coils, but only by deliberately manipulating the magnetic field profile with the annular element .
  • the electrically conductive material of the annular element contains one or more elements from the group consisting of silver, copper, gold, aluminum, rhodium, tungsten, zinc, iron, platinum and tin. In particular, this also includes alloys like brass and bronze.
  • the group particularly preferably consists of silver, copper, gold and aluminum.
  • the electrically conductive material of the ring-shaped element consists of copper, with up to 5% by weight of foreign components being able to be present.
  • the annular element tapers conically on the side which is first introduced into the region of the alternating electromagnetic field.
  • This leads to a reduced diameter that is available for the melt to drain off, it ensures that the risk that the ring-shaped element inside is touched and contaminated by the melt is reduced.
  • the magnetic field induction on the obliquely oriented jacket which is more inward and reinforced by the smaller diameter, reliably ensures that the melt can run into the ring-shaped element without contact despite the smaller passage area.
  • the melt jet concentrated in the center of the ring-shaped element thus has an optimal distance from the ring wall in the then expanding diameter.
  • the annular element is hollow-walled and this cavity is filled with a phase change material (PCM).
  • PCM phase change material
  • the ring-shaped element is preferably cooled in such a way that it sits on a cooled bearing surface during the melting process. This can be cooled intensively in order to regenerate the phase change material during the next melting process and to cool the ring-shaped element again before it is raised again into the alternating field for the next casting process.
  • a particularly preferred embodiment variant provides for the ring-shaped element to be lifted from the casting mold for insertion into the region of the alternating electromagnetic field between the induction coils.
  • the annular element has suitable means which ensure that it is carried along when the casting mold is raised into the casting position, for example a collar-like cross-sectional reduction at the upper end to a diameter which is smaller than the upper cross section of the casting mold, or pins which are inserted in appropriately designed receptacles can intervene on the mold.
  • this can serve as a driving means.
  • the annular element is part of the casting mold.
  • the ring-shaped element can be arranged in a collar-like manner around the upper edge of the filling section of the casting mold, which is generally funnel-shaped. Alternatively, it could also be the extension of the upper diameter of the filling section. Due to the funnel effect of the ring-shaped element, the diameter of the funnel-shaped filling section of the casting mold can be smaller than is usual, so that the diameter can be reduced to such an extent that the upper end of the casting mold can be inserted into the area between the coils.
  • the ring-shaped element can also be designed to be removable, so that it can be removed before the shape is broken and can be used again in a new shape. For example, this can be done via a platform-like expansion of the upper region of the casting mold, onto which the ring-shaped element can be placed when it is pushed over the edge of the funnel-shaped filler section.
  • the electrically conductive material used according to the invention as a batch has at least one high-melting metal from the following group: titanium, zirconium, vanadium, tantalum, tungsten, hafnium, niobium, rhenium, molybdenum.
  • a less high-melting metal such as nickel, iron or aluminum can be used.
  • a mixture or alloy with one or more of the aforementioned metals can also be used as the conductive material.
  • the metal preferably has a proportion of at least 50% by weight, in particular at least 60% by weight or at least 70% by weight, of the conductive material. It has been shown that these metals particularly benefit from the advantages of the present invention.
  • the conductive material is titanium or a titanium alloy, in particular TiAl or Ti-AIV.
  • metals or alloys can be processed particularly advantageously because they have a pronounced dependence of the viscosity on the temperature and, moreover, are particularly reactive, in particular with regard to the materials of the casting mold. Since the method according to the invention combines contactless melting in suspension with extremely rapid filling of the casting mold, a particular advantage can be realized for such metals. With the method according to the invention, castings can be produced which have a particularly thin or even no oxide layer from the reaction of the melt with the material of the casting mold. And in the case of the high-melting metals in particular, the improved utilization of the induced eddy current and the exorbitant reduction in heat losses due to thermal contact have a noticeable effect on the cycle times. Furthermore, the load capacity of the generated magnetic field can be increased, so that even heavier batches can be kept in suspension.
  • the conductive material is superheated during melting to a temperature which is at least 10 ° C., at least 20 ° C. or at least 30 ° C. above the melting point of the material. Overheating prevents the material from instantaneously solidifying when it comes into contact with the mold, whose temperature is below the melting temperature. It is achieved that the batch can be distributed in the mold before the viscosity of the material becomes too high. It is an advantage of levitation melting that there is no need to use a crucible that is in contact with the melt. The high loss of material from the cold crucible process on the crucible wall is avoided, as is contamination of the melt by crucible components.
  • the melt can be heated to a relatively high degree, since it can be operated in a vacuum or under protective gas and there is no contact with reactive materials.
  • the overheating is therefore preferably limited to at most 300 ° C., in particular at most 200 ° C. and particularly preferably at most 100 ° C. above the melting point of the conductive material.
  • At least one ferromagnetic element is arranged horizontally around the area in which the charge is melted.
  • the ferromagnetic element can be arranged in a ring around the melting area, with "ring-shaped" not only meaning circular elements, but also angular, in particular quadrangular or polygonal ring elements.
  • the ferromagnetic element can furthermore have a plurality of rod sections which, in particular, project horizontally in the direction of the melting range.
  • the ferromagnetic element consists of a ferromagnetic material, preferably with an amplitude permeability ⁇ a > 10, more preferably ⁇ a > 50 and particularly preferably ⁇ a > 100.
  • the amplitude permeability relates in particular to the permeability in a temperature range between 25 ° C and 150 ° C and with a magnetic flux density between 0 and 500 mT.
  • the amplitude permeability is in particular at least one hundredth, in particular at least 10 hundredths or 25 hundredths of the amplitude permeability of soft magnetic ferrite (eg 3C92). Suitable materials are known to the person skilled in the art.
  • the electromagnetic fields are generated with at least two pairs of induction coils, the longitudinal axes of which are oriented horizontally, that is to say the conductors of the coils are preferably each wound on a horizontally oriented coil body.
  • the coils can each be arranged around a rod section of the ferromagnetic element that projects in the direction of the melting range.
  • the coils can have coolant-cooled conductors.
  • a device for levitation melting of an electrically conductive material comprising at least a pair of opposing induction coils with a core made of a ferromagnetic material to bring about the floating state of a batch by means of alternating electromagnetic fields and a ring-shaped element made of an electrically conductive material, which in the area of the alternating electromagnetic field between the induction coils is insertable.
  • a ring-shaped element which consists of an electrically conductive material and is part of a casting mold, in a levitation melting process for casting a batch into the casting mold by introducing it into the area between the induction coils, which create an alternating electromagnetic field to bring about the floating state of the Generate batch.
  • Figure 1 shows a batch (1) made of conductive material, which is in the area of influence of alternating electromagnetic fields (melting range), which are generated with the help of the coils (3).
  • the casting mold (2) has a funnel-shaped filling section (6).
  • the holder (5) is suitable for lifting the mold (2) from a feed position into a casting position, which is symbolized by the arrow shown.
  • a ferromagnetic element (4) is arranged in the core of the coils (3).
  • the axes of the pair of coils (3) are aligned horizontally, with two opposing coils (3) forming a pair.
  • the annular element (7) is arranged below the pair of coils (3) between the batch (1) and the funnel-shaped filling section (6) of the casting mold (2). As the arrow symbolizes, it can be moved vertically.
  • the batch (1) is melted in the process according to the invention in suspension and poured into the casting mold (2) after the melt has taken place.
  • the ring-shaped element (7) is slowly raised into the area of the magnetic field between the coils (3).
  • the melt runs slowly and in a controlled manner through the ring-shaped element (7) into the casting mold (2) without contaminating the coils (3) or their cores and the inside of the ring-shaped element (7) or in the funnel-shaped filling section (6). the mold (2).
  • FIG 2 shows analog to Figure 1 an embodiment variant in which the annular element (7) is part of the casting mold (2).
  • the annular element (7) is designed as a collar around the funnel-shaped filler section (6) of the casting mold (2).
  • the holder (5) in the variant of Figure 1 remains in the position shown during casting and only the ring-shaped element (7) is moved by a mechanism (not shown), the entire casting mold (2) with the holder (5) for casting is moved further upwards from the position shown.
  • This has the additional advantage that the distance between the melt and the funnel-shaped filling section (6) is reduced at the same time and the free-fall distance of the melt is thus minimized. Splashing can thus be reliably ruled out.
  • FIGS 3 show step by step the sequence of a casting process in a design variant with an annular element (7) with a conical taper on the top.
  • the casting mold (2) arranged below the annular element (7) is not shown in the drawing.
  • Figure 3a shows the stage at the end of the melting process.
  • the ring-shaped element (7) is located below the magnetic field of the coils (3).
  • the melt levitates in the area above the coils (3).
  • the magnetic field lines shown run freely between the poles made of ferromagnetic material (4) of the coils (3).
  • Figure 3b shows the situation at the beginning of the entry of the annular element (7) into the magnetic field of the coils (3).
  • the magnetic field lines are deflected to a greater extent, in particular in the region of the cone, and are guided around the annular element (7), so that they do not penetrate the region inside the cone and the cylindrical part.
  • the field lines running behind the annular element (7) are shown in dashed lines in the drawing.
  • the density of the Lorentz force increases sharply due to the magnetic field generated by the eddy currents in the annular element (7) along the slope towards the tips of the annular element (7).
  • Figure 3c finally shows the situation at the beginning of the casting.
  • the start of a melt jet has formed due to the funnel effect generated by the deflected magnetic forces.
  • the magnetic field lines running behind the annular element (7) and the melt drop are again shown in dashed lines.
  • the ring-shaped element (7) is then slowly pushed further upwards until the entire melt of the batch (1) has run off into the casting mold (2).
  • the Figures 4 show step by step the sequence of a casting process in a design variant with an annular element (7) with phase change material in the cavity wall and a cooled bearing surface.
  • Figure 4a shows the situation at the end of the melting process.
  • the finished melt (1) levitates above the induction coils (3) with their cores made of ferromagnetic material (4).
  • the casting mold (2) with its funnel-shaped filling section (6) is provided underneath.
  • the cast will in this example introduced by an annular element (7) in a cylindrical tube shape, which is filled with a phase change material (8) in the cavity wall.
  • the filling section moves through the cooled bearing surface into the annular element (7) and lifts the annular element (7) by means of the collar (9).
  • the inner diameter of the annular element (7) and the cooled bearing surface (10) on which it rests are dimensioned such that they enclose the upper outer diameter of the filling section (6) with little play.
  • the flange-like collar (9) protrudes so far inwards that it sits on the edge of the filling section (6) without covering the funnel surface.
  • Figure 4b shows the situation at the beginning of the pouring process.
  • the casting mold (2) with the ring-shaped element (7) put over it has been raised into the coil field to below the levitating melt (1).
  • They are now pushed up a little further until the melt (1) has run off into the casting mold (2).
  • the ring-shaped element (7) heats up due to the radiant heat of the melt (1) and the alternating magnetic field.
  • the temperature rise can be reduced or delayed during the phase change of the phase change material (8) inside the annular element (7).

Landscapes

  • Physics & Mathematics (AREA)
  • Electromagnetism (AREA)
  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • General Induction Heating (AREA)
  • Crucibles And Fluidized-Bed Furnaces (AREA)
  • Continuous Casting (AREA)
  • Furnace Details (AREA)

Claims (15)

  1. Procédé de fabrication de corps coulés en matériau conducteur de l'électricité dans le procédé de fusion en lévitation, selon lequel, en vue de l'établissement de l'état flottant d'une charge (1), des champs électromagnétiques alternatifs sont mis en œuvre, qui sont produits avec au moins une paire de bobines d'induction opposées l'une à l'autre (3) avec un noyau en matériau ferromagnétique (4), comprenant les étapes suivantes :
    - l'apport d'une charge (1) d'un matériau de départ dans la zone d'influence d'au moins un champ électromagnétique alternatif, de façon que la charge (1) soit maintenue dans un état flottant,
    - la fusion de la charge (1),
    - le positionnement d'un moule (2) dans une zone de remplissage au-dessous de la charge flottante (1),
    - la coulée de la charge entière (1) dans le moule (2),
    - le prélèvement du corps coulé solidifié hors du moule (2).
    caractérisé en ce que la coulée de la charge entière (1) dans le moule (2) est réalisée par l'introduction d'un élément annulaire (7) en matériau conducteur de l'électricité dans la portée du champ électromagnétique alternatif entre les bobines d'induction (3).
  2. Procédé selon la revendication 1, caractérisé en ce que le matériau conducteur de l'électricité de l'élément annulaire (7) contient un ou plusieurs éléments du groupe consistant en : argent, cuivre, or, aluminium, rhodium, tungstène, zinc, fer, platine et étain.
  3. Procédé selon la revendication 1 ou 2, caractérisé en ce que l'élément annulaire (7) se rétrécit de manière conique du côté qui est introduit en premier lieu dans la portée du champ électromagnétique alternatif.
  4. Procédé selon l'une des revendications précédentes, caractérisé en ce que l'élément annulaire (7) est une partie du moule (2).
  5. Procédé selon l'une des revendications précédentes, caractérisé en ce que les champs électromagnétiques sont produits avec au moins deux paires de bobines d'induction (3).
  6. Procédé selon l'une des revendications 1 à 5, caractérisé en ce que l'élément annulaire (7) est réalisé avec une paroi creuse et ce creux est rempli avec un matériau à changement de phase.
  7. Procédé selon la revendication 6, caractérisé en ce que l'élément annulaire (7) repose sur une surface d'appui refroidie pendant le processus de fusion.
  8. Procédé selon la revendication 7, caractérisé en ce que l'élément annulaire (7) est soulevé par le moule (2) pour être introduit dans la portée du champ électromagnétique alternatif entre les bobines d'induction (3).
  9. Procédé selon l'une des revendications précédentes, caractérisé en ce que l'élément annulaire (7) est une partie constituante d'un moule (2).
  10. Dispositif pour la fusion en lévitation d'un matériau conducteur de l'électricité, comprenant au moins une paire de bobines d'induction opposées l'une à l'autre (3) avec un noyau en matériau ferromagnétique (4) en vue de l'établissement de l'état flottant d'une charge (1) au moyen de champs électromagnétiques alternatifs, caractérisé en ce qu'il comprend un élément annulaire (7) en matériau conducteur de l'électricité qui peut être introduit dans la portée du champ électromagnétique alternatif entre les bobines d'induction (3).
  11. Dispositif selon la revendication 10, caractérisé en ce que le matériau conducteur de l'électricité de l'élément annulaire (7) contient un ou plusieurs éléments du groupe consistant en : argent, cuivre, or, aluminium, rhodium, tungstène, zinc, fer, platine et étain.
  12. Dispositif selon la revendication 10 ou 11, caractérisé en ce que l'élément annulaire (7) se rétrécit de manière conique du côté qui est introduit en premier lieu dans la portée du champ électromagnétique alternatif.
  13. Dispositif selon l'une des revendications 10 à 12, caractérisé en ce que les champs électromagnétiques sont produits avec au moins deux paires de bobines d'induction (3).
  14. Dispositif selon l'une des revendications 10 à 13, caractérisé en ce que l'élément annulaire (7) est réalisé avec une paroi creuse et ce creux est rempli avec un matériau à changement de phase.
  15. Dispositif selon la revendication 14, caractérisé en ce que l'élément annulaire (7) repose sur une surface d'appui refroidie pendant le processus de fusion.
EP19739554.4A 2018-07-17 2019-07-09 Procédé de fusion par lévitation au moyen d'un élément annulaire Active EP3622781B1 (fr)

Priority Applications (2)

Application Number Priority Date Filing Date Title
PL19739554T PL3622781T3 (pl) 2018-07-17 2019-07-09 Sposób topienia lewitacyjnego za pomocą elementu pierścieniowego
SI201930002T SI3622781T1 (sl) 2018-07-17 2019-07-09 Postopek lebdilnega taljenja z obročastim elementom

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE102018117302.4A DE102018117302A1 (de) 2018-07-17 2018-07-17 Schwebeschmelzverfahren mit einem ringförmigen Element
PCT/EP2019/068431 WO2020016062A1 (fr) 2018-07-17 2019-07-09 Procédé de fusion par lévitation au moyen d'un élément annulaire

Publications (2)

Publication Number Publication Date
EP3622781A1 EP3622781A1 (fr) 2020-03-18
EP3622781B1 true EP3622781B1 (fr) 2020-05-20

Family

ID=67262293

Family Applications (1)

Application Number Title Priority Date Filing Date
EP19739554.4A Active EP3622781B1 (fr) 2018-07-17 2019-07-09 Procédé de fusion par lévitation au moyen d'un élément annulaire

Country Status (13)

Country Link
US (1) US11192179B2 (fr)
EP (1) EP3622781B1 (fr)
JP (1) JP6961110B2 (fr)
KR (1) KR102217519B1 (fr)
CN (1) CN111758299B (fr)
DE (1) DE102018117302A1 (fr)
ES (1) ES2800305T3 (fr)
PL (1) PL3622781T3 (fr)
PT (1) PT3622781T (fr)
RU (1) RU2735329C1 (fr)
SI (1) SI3622781T1 (fr)
TW (1) TWI757611B (fr)
WO (1) WO2020016062A1 (fr)

Families Citing this family (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO2023122336A1 (fr) * 2021-12-24 2023-06-29 Build Beyond, Llc Système et procédé de génération d'un flux magnétique contrôlé

Family Cites Families (25)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE422004C (de) 1925-11-23 Otto Muck Dipl Ing Verfahren und Vorrichtung zum Schmelzen, insbesondere von Leitern u. dgl. durch elektrische Induktionsstroeme
US2686864A (en) 1951-01-17 1954-08-17 Westinghouse Electric Corp Magnetic levitation and heating of conductive materials
US2686865A (en) * 1951-10-20 1954-08-17 Westinghouse Electric Corp Stabilizing molten material during magnetic levitation and heating thereof
US2664496A (en) * 1952-11-25 1953-12-29 Westinghouse Electric Corp Apparatus for the magnetic levitation and heating of conductive materials
BE655473A (fr) 1963-11-21 1900-01-01
FR1416536A (fr) * 1964-09-24 1965-11-05 Comp Generale Electricite Dispositif de lévitation et de fusion
SU1098105A1 (ru) * 1983-01-14 1984-06-15 Ордена Ленина физико-технический институт им.А.Ф.Иоффе Индуктор дл плавки металла во взвешенном состо нии
US4587552A (en) * 1983-09-02 1986-05-06 Rca Corporation Apparatus for generating the magnitude of the vector sum of two orthogonal signals as for use in a digital TV receiver
US4578552A (en) 1985-08-01 1986-03-25 Inductotherm Corporation Levitation heating using single variable frequency power supply
FR2661849B1 (fr) * 1990-05-10 1995-03-17 Siderurgie Fse Inst Rech Procede et dispositifs de rechauffage par induction au defile d'un produit metallurgique de forme allongee.
US5722481A (en) * 1995-06-20 1998-03-03 Daido Tokushuko Kabushiki Kaisha Method for casting metal and apparatus therefor
TW297050B (fr) 1995-05-19 1997-02-01 Daido Steel Co Ltd
JP2783193B2 (ja) 1995-06-26 1998-08-06 大同特殊鋼株式会社 レビテーション溶解法及びレビテーション溶解・鋳造装置
DE19607805C1 (de) * 1996-03-01 1997-07-17 Ald Vacuum Techn Gmbh Verfahren und Vorrichtung zum Schmelzen und Gießen von Metallen in Formen
JPH1187044A (ja) * 1997-09-04 1999-03-30 Fuji Electric Co Ltd 底部出湯式浮揚溶解装置及びその出湯方法
RU2148226C1 (ru) * 1998-11-27 2000-04-27 Институт машиноведения им.академика А.А.Благонравова РАН Устройство для плавки металлов и сплавов во взвешенном состоянии
KR19990033628U (ko) * 1999-05-08 1999-08-16 김지순 고주파부양용해진공주조장치
KR101143067B1 (ko) * 2004-08-23 2012-05-08 타타 스틸 네덜란드 테크날러지 베.뷔. 전도성 재료의 공중부양 방법 및 장치
JP2008142717A (ja) * 2006-12-06 2008-06-26 Daido Steel Co Ltd Ｔｉ、Ｔｉ合金、またはＴｉＡｌの造塊方法および造塊装置
KR100952904B1 (ko) * 2008-12-30 2010-04-16 김차현 2단계 고주파 부양용해를 이용한 진공주조장치 및 주조방법
JP2012040590A (ja) * 2010-08-19 2012-03-01 Olympus Corp 遠心鋳造装置
DE102011082611A1 (de) 2011-09-13 2013-03-14 Franz Haimer Maschinenbau Kg Induktionsspuleneinheit
JP5621839B2 (ja) * 2012-12-28 2014-11-12 大同特殊鋼株式会社 コールドクルーシブル溶解炉の出湯用電磁ノズル装置
TW201801821A (zh) * 2016-07-01 2018-01-16 財團法人金屬工業研究發展中心 利用高真空無坩堝懸浮熔煉製程之鎳鈦合金製造方法
DE102017100836B4 (de) 2017-01-17 2020-06-18 Ald Vacuum Technologies Gmbh Gießverfahren

Non-Patent Citations (1)

* Cited by examiner, † Cited by third party
Title
None *

Also Published As

Publication number Publication date
PL3622781T3 (pl) 2020-09-21
CN111758299B (zh) 2022-02-25
PT3622781T (pt) 2020-06-26
DE102018117302A1 (de) 2020-01-23
KR102217519B1 (ko) 2021-02-19
JP2021522666A (ja) 2021-08-30
ES2800305T3 (es) 2020-12-29
US11192179B2 (en) 2021-12-07
US20210245241A1 (en) 2021-08-12
TW202007224A (zh) 2020-02-01
EP3622781A1 (fr) 2020-03-18
WO2020016062A1 (fr) 2020-01-23
SI3622781T1 (sl) 2020-08-31
RU2735329C1 (ru) 2020-10-30
TWI757611B (zh) 2022-03-11
JP6961110B2 (ja) 2021-11-05
KR20200115634A (ko) 2020-10-07
CN111758299A (zh) 2020-10-09

Similar Documents

Publication Publication Date Title
EP3570993B1 (fr) Procédé de coulée
EP3013502B1 (fr) Procédé et machine de traitement de fabrication additive d'un élément tridimensionnel par fusion sélective par laser
DE60020505T2 (de) Schmelzflüssiger Metallbadofen und Giessverfahren
DE1025631B (de) Verfahren zur Raffination eines laenglichen Metallkoerpers nach dem Zonenschmelzverfahren
DE3529044A1 (de) Verfahren und vorrichtung zum giessen von leitenden und halbleitenden materialien
EP1020245B1 (fr) Procédé de fabrication d'une aube de turbine à gaz utilisant une solidification directionelle d'une masse en fusion
DE4207694A1 (de) Vorrichtung fuer die herstellung von metallen und metall-legierungen hoher reinheit
EP2400816A1 (fr) Dispositif destiné à la fonte de pièces en métal
EP3622781B1 (fr) Procédé de fusion par lévitation au moyen d'un élément annulaire
DE2609949C3 (de) Verfahren und Vorrichtung zur Herstellung eines Gußstücks aus in einer Richtung erstarrter Metallegierung
EP3626028B1 (fr) Procédé de fusion par lévitation au moyen d'unités d'induction mobiles
EP3622782B1 (fr) Dispositif et procédé de fusion par lévitation au moyen d'unités d'induction disposées de manière inclinée
DE102012005069A1 (de) "Verfahren und Vorrichtung zum Herstellen von solartauglichen Siliziumblöcken"
EP3586568B1 (fr) Fusion en lévitation
DE1100887B (de) Verfahren und Vorrichtung zur Herstellung von Rohren aus durchsichtigem, reinem Quarz
DE1964052C3 (de) Vorrichtung zum Elektroschlackenumschmelzen von Metallen, insbesondere von Stählen
EP1450974B1 (fr) Dispositif constitue d'un cuve de coulee pouvant etre chauffee et d'un four-poche
DE1191970B (de) Vorrichtung zur Schmelzbehandlung von Metallen
DE1235463B (de) Verfahren zum Verdichten von bei Raumtemperatur elektrisch nicht oder schlecht leitenden chemischen Verbindungen
DE102021125159A1 (de) Vorrichtung und ein Verfahren zum Herstellen eines Feingussbauteils
DE2143445A1 (de) Verfahren und vorrichtung zum herstellen von metallischen bloecken
DE2143445C3 (de) Verfahren und Vorrichtung zum Herstellen von metallischen Blöcken
DE1856623U (de) Induktions-tiegelofen.
DE1271326B (de) Elektroden fuer elektrische Glasschmelzoefen und Verfahren zu ihrer Herstellung
DE1280820B (de) Verfahren und Vorrichtung zum Ziehen eines einkristallinen Halbleiterstabes

Legal Events

Date Code Title Description
STAA Information on the status of an ep patent application or granted ep patent

Free format text: STATUS: UNKNOWN

STAA Information on the status of an ep patent application or granted ep patent

Free format text: STATUS: THE INTERNATIONAL PUBLICATION HAS BEEN MADE

PUAI Public reference made under article 153(3) epc to a published international application that has entered the european phase

Free format text: ORIGINAL CODE: 0009012

STAA Information on the status of an ep patent application or granted ep patent

Free format text: STATUS: REQUEST FOR EXAMINATION WAS MADE

GRAP Despatch of communication of intention to grant a patent

Free format text: ORIGINAL CODE: EPIDOSNIGR1

STAA Information on the status of an ep patent application or granted ep patent

Free format text: STATUS: GRANT OF PATENT IS INTENDED

17P Request for examination filed

Effective date: 20191213

AK Designated contracting states

Kind code of ref document: A1

Designated state(s): AL AT BE BG CH CY CZ DE DK EE ES FI FR GB GR HR HU IE IS IT LI LT LU LV MC MK MT NL NO PL PT RO RS SE SI SK SM TR

AX Request for extension of the european patent

Extension state: BA ME

GRAS Grant fee paid

Free format text: ORIGINAL CODE: EPIDOSNIGR3

INTG Intention to grant announced

Effective date: 20200318

RAP1 Party data changed (applicant data changed or rights of an application transferred)

Owner name: ALD VACUUM TECHNOLOGIES GMBH

GRAA (expected) grant

Free format text: ORIGINAL CODE: 0009210

STAA Information on the status of an ep patent application or granted ep patent

Free format text: STATUS: THE PATENT HAS BEEN GRANTED

AK Designated contracting states

Kind code of ref document: B1

Designated state(s): AL AT BE BG CH CY CZ DE DK EE ES FI FR GB GR HR HU IE IS IT LI LT LU LV MC MK MT NL NO PL PT RO RS SE SI SK SM TR

DAV Request for validation of the european patent (deleted)
DAX Request for extension of the european patent (deleted)
REG Reference to a national code

Ref country code: GB

Ref legal event code: FG4D

Free format text: NOT ENGLISH

REG Reference to a national code

Ref country code: CH

Ref legal event code: EP

REG Reference to a national code

Ref country code: DE

Ref legal event code: R096

Ref document number: 502019000043

Country of ref document: DE

REG Reference to a national code

Ref country code: CH

Ref legal event code: NV

Representative=s name: VALIPAT S.A. C/O BOVARD SA NEUCHATEL, CH

Ref country code: AT

Ref legal event code: REF

Ref document number: 1273516

Country of ref document: AT

Kind code of ref document: T

Effective date: 20200615

REG Reference to a national code

Ref country code: PT

Ref legal event code: SC4A

Ref document number: 3622781

Country of ref document: PT

Date of ref document: 20200626

Kind code of ref document: T

Free format text: AVAILABILITY OF NATIONAL TRANSLATION

Effective date: 20200619

REG Reference to a national code

Ref country code: LT

Ref legal event code: MG4D

REG Reference to a national code

Ref country code: NL

Ref legal event code: MP

Effective date: 20200520

PG25 Lapsed in a contracting state [announced via postgrant information from national office to epo]

Ref country code: SE

Free format text: LAPSE BECAUSE OF FAILURE TO SUBMIT A TRANSLATION OF THE DESCRIPTION OR TO PAY THE FEE WITHIN THE PRESCRIBED TIME-LIMIT

Effective date: 20200520

Ref country code: LT

Free format text: LAPSE BECAUSE OF FAILURE TO SUBMIT A TRANSLATION OF THE DESCRIPTION OR TO PAY THE FEE WITHIN THE PRESCRIBED TIME-LIMIT

Effective date: 20200520

Ref country code: IS

Free format text: LAPSE BECAUSE OF FAILURE TO SUBMIT A TRANSLATION OF THE DESCRIPTION OR TO PAY THE FEE WITHIN THE PRESCRIBED TIME-LIMIT

Effective date: 20200920

Ref country code: GR

Free format text: LAPSE BECAUSE OF FAILURE TO SUBMIT A TRANSLATION OF THE DESCRIPTION OR TO PAY THE FEE WITHIN THE PRESCRIBED TIME-LIMIT

Effective date: 20200821

Ref country code: NO

Free format text: LAPSE BECAUSE OF FAILURE TO SUBMIT A TRANSLATION OF THE DESCRIPTION OR TO PAY THE FEE WITHIN THE PRESCRIBED TIME-LIMIT

Effective date: 20200820

Ref country code: FI

Free format text: LAPSE BECAUSE OF FAILURE TO SUBMIT A TRANSLATION OF THE DESCRIPTION OR TO PAY THE FEE WITHIN THE PRESCRIBED TIME-LIMIT

Effective date: 20200520

PG25 Lapsed in a contracting state [announced via postgrant information from national office to epo]

Ref country code: LV

Free format text: LAPSE BECAUSE OF FAILURE TO SUBMIT A TRANSLATION OF THE DESCRIPTION OR TO PAY THE FEE WITHIN THE PRESCRIBED TIME-LIMIT

Effective date: 20200520

Ref country code: HR

Free format text: LAPSE BECAUSE OF FAILURE TO SUBMIT A TRANSLATION OF THE DESCRIPTION OR TO PAY THE FEE WITHIN THE PRESCRIBED TIME-LIMIT

Effective date: 20200520

Ref country code: BG

Free format text: LAPSE BECAUSE OF FAILURE TO SUBMIT A TRANSLATION OF THE DESCRIPTION OR TO PAY THE FEE WITHIN THE PRESCRIBED TIME-LIMIT

Effective date: 20200820

Ref country code: RS

Free format text: LAPSE BECAUSE OF FAILURE TO SUBMIT A TRANSLATION OF THE DESCRIPTION OR TO PAY THE FEE WITHIN THE PRESCRIBED TIME-LIMIT

Effective date: 20200520

PG25 Lapsed in a contracting state [announced via postgrant information from national office to epo]

Ref country code: NL

Free format text: LAPSE BECAUSE OF FAILURE TO SUBMIT A TRANSLATION OF THE DESCRIPTION OR TO PAY THE FEE WITHIN THE PRESCRIBED TIME-LIMIT

Effective date: 20200520

Ref country code: AL

Free format text: LAPSE BECAUSE OF FAILURE TO SUBMIT A TRANSLATION OF THE DESCRIPTION OR TO PAY THE FEE WITHIN THE PRESCRIBED TIME-LIMIT

Effective date: 20200520

PG25 Lapsed in a contracting state [announced via postgrant information from national office to epo]

Ref country code: RO

Free format text: LAPSE BECAUSE OF FAILURE TO SUBMIT A TRANSLATION OF THE DESCRIPTION OR TO PAY THE FEE WITHIN THE PRESCRIBED TIME-LIMIT

Effective date: 20200520

Ref country code: SM

Free format text: LAPSE BECAUSE OF FAILURE TO SUBMIT A TRANSLATION OF THE DESCRIPTION OR TO PAY THE FEE WITHIN THE PRESCRIBED TIME-LIMIT

Effective date: 20200520

Ref country code: DK

Free format text: LAPSE BECAUSE OF FAILURE TO SUBMIT A TRANSLATION OF THE DESCRIPTION OR TO PAY THE FEE WITHIN THE PRESCRIBED TIME-LIMIT

Effective date: 20200520

Ref country code: EE

Free format text: LAPSE BECAUSE OF FAILURE TO SUBMIT A TRANSLATION OF THE DESCRIPTION OR TO PAY THE FEE WITHIN THE PRESCRIBED TIME-LIMIT

Effective date: 20200520

REG Reference to a national code

Ref country code: DE

Ref legal event code: R097

Ref document number: 502019000043

Country of ref document: DE

PG25 Lapsed in a contracting state [announced via postgrant information from national office to epo]

Ref country code: SK

Free format text: LAPSE BECAUSE OF FAILURE TO SUBMIT A TRANSLATION OF THE DESCRIPTION OR TO PAY THE FEE WITHIN THE PRESCRIBED TIME-LIMIT

Effective date: 20200520

Ref country code: MC

Free format text: LAPSE BECAUSE OF FAILURE TO SUBMIT A TRANSLATION OF THE DESCRIPTION OR TO PAY THE FEE WITHIN THE PRESCRIBED TIME-LIMIT

Effective date: 20200520

PLBE No opposition filed within time limit

Free format text: ORIGINAL CODE: 0009261

STAA Information on the status of an ep patent application or granted ep patent

Free format text: STATUS: NO OPPOSITION FILED WITHIN TIME LIMIT

26N No opposition filed

Effective date: 20210223

REG Reference to a national code

Ref country code: BE

Ref legal event code: MM

Effective date: 20210731

PG25 Lapsed in a contracting state [announced via postgrant information from national office to epo]

Ref country code: LU

Free format text: LAPSE BECAUSE OF NON-PAYMENT OF DUE FEES

Effective date: 20210709

PG25 Lapsed in a contracting state [announced via postgrant information from national office to epo]

Ref country code: BE

Free format text: LAPSE BECAUSE OF NON-PAYMENT OF DUE FEES

Effective date: 20210731

PGFP Annual fee paid to national office [announced via postgrant information from national office to epo]

Ref country code: TR

Payment date: 20220704

Year of fee payment: 4

P01 Opt-out of the competence of the unified patent court (upc) registered

Effective date: 20230522

PG25 Lapsed in a contracting state [announced via postgrant information from national office to epo]

Ref country code: CY

Free format text: LAPSE BECAUSE OF FAILURE TO SUBMIT A TRANSLATION OF THE DESCRIPTION OR TO PAY THE FEE WITHIN THE PRESCRIBED TIME-LIMIT

Effective date: 20200520

PGFP Annual fee paid to national office [announced via postgrant information from national office to epo]

Ref country code: CZ

Payment date: 20230623

Year of fee payment: 5

Ref country code: PT

Payment date: 20230626

Year of fee payment: 5

PGFP Annual fee paid to national office [announced via postgrant information from national office to epo]

Ref country code: PL

Payment date: 20230626

Year of fee payment: 5

PGFP Annual fee paid to national office [announced via postgrant information from national office to epo]

Ref country code: IT

Payment date: 20230731

Year of fee payment: 5

Ref country code: IE

Payment date: 20230726

Year of fee payment: 5

Ref country code: GB

Payment date: 20230724

Year of fee payment: 5

Ref country code: ES

Payment date: 20230821

Year of fee payment: 5

Ref country code: CH

Payment date: 20230801

Year of fee payment: 5

PGFP Annual fee paid to national office [announced via postgrant information from national office to epo]

Ref country code: SI

Payment date: 20230626

Year of fee payment: 5

Ref country code: FR

Payment date: 20230724

Year of fee payment: 5

Ref country code: DE

Payment date: 20230720

Year of fee payment: 5

PG25 Lapsed in a contracting state [announced via postgrant information from national office to epo]

Ref country code: MK

Free format text: LAPSE BECAUSE OF FAILURE TO SUBMIT A TRANSLATION OF THE DESCRIPTION OR TO PAY THE FEE WITHIN THE PRESCRIBED TIME-LIMIT

Effective date: 20200520