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EP3229992B1 - Dispositif et procédé de fabrication de lingots - Google Patents

Dispositif et procédé de fabrication de lingots Download PDF

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Publication number
EP3229992B1
EP3229992B1 EP16722637.2A EP16722637A EP3229992B1 EP 3229992 B1 EP3229992 B1 EP 3229992B1 EP 16722637 A EP16722637 A EP 16722637A EP 3229992 B1 EP3229992 B1 EP 3229992B1
Authority
EP
European Patent Office
Prior art keywords
ingot
chamber
retaining means
melting
holding means
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
EP16722637.2A
Other languages
German (de)
English (en)
Other versions
EP3229992A1 (fr
Inventor
Arno Niebling
Jochen Flinspach
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
Publication of EP3229992A1 publication Critical patent/EP3229992A1/fr
Application granted granted Critical
Publication of EP3229992B1 publication Critical patent/EP3229992B1/fr
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Anticipated expiration legal-status Critical

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Classifications

    • 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
    • B22D11/12—Accessories for subsequent treating or working cast stock in situ
    • B22D11/128—Accessories for subsequent treating or working cast stock in situ for removing
    • B22D11/1281—Vertical removing
    • 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
    • B22D11/001—Continuous casting of metals, i.e. casting in indefinite lengths of specific alloys
    • 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
    • B22D11/14—Plants for continuous casting
    • B22D11/141—Plants for continuous casting for vertical casting

Definitions

  • the present invention relates to an apparatus and a method for producing ingots of metal or metal alloy.
  • the process is in particular a continuous casting process.
  • the invention relates to a method and an apparatus for producing ingots of metal or metal alloy.
  • Method and apparatus are particularly suitable for the production of ingots of nickel, titanium, vanadium, niobium, tantalum, zirconium, hafnium and alloys thereof and alloys with these metals in the continuous casting process.
  • the device has an ingot chamber adapted to receive and cast several cast ingots in the ingot chamber.
  • the ingots are arranged horizontally movable on ingot holding means in the ingot chamber.
  • the ingot holding means in which an ingot can be arranged, are designed to be movable.
  • the mobility of the ingot holding means can preferably be achieved by arranging the ingot holding means on or in a movable plate.
  • the plate is rotatable, e.g. a turntable with ingot holding means arranged therein.
  • the rotatable plate may be circular, wherein advantageously the ingot retaining means are arranged annularly around the axis of rotation.
  • the ingot holding means in such a way that they hold the respective ingot only in its bottom area, in particular at its starter bottom. As a result, the ingot remains largely uncovered in the ingot chamber, whereby the cooling of the ingot can be done comparatively quickly.
  • partially ingot molds are provided, in which the ingot is poured into it. These forms are then either coolant cooled or slow the cooling down.
  • Such molds are preferably not provided in the apparatus of this invention to reduce maintenance, minimize system complexity, and not affect cooling.
  • the ingot retaining means may be provided with a wall which is at least partially capable of surrounding a cast ingot.
  • This wall can be cooled or heated, depending on whether the cooling should be accelerated or slowed down.
  • heating means a resistance heating is preferred. Hence, this can be achieved in particular by using pipe sections that are tuned to the ingot, in particular with regard to height and diameter. A heating of the walls of such a modified ingot-holding means may be advantageous if otherwise a rupture of the ingot would be to be feared in case of too rapid cooling.
  • the ingot to be unloaded is held at the unloading point by holding elements which are advantageously located at the door of the unloading chamber. The door can then be swung outwards, making the ingot accessible to a crane, for example.
  • the device according to the invention preferably has at least one lifting device which is suitable for forming a releasable connection with an ingot formed by means of the mold and for guiding, in particular lowering, the ingot which has just been cast into the ingot holding means in the melting position.
  • the detachable connection is in particular a clamp connection.
  • other compounds are conceivable, such as e.g. Screw or plug connections.
  • Preferred embodiments relate to devices having at least four ingot holding means, more preferably at least six ingot holding means, more preferably at least eight ingot holding means, more preferably twelve or sixteen ingot holding means.
  • eight ingot holding means is at a process time to which, for example, four ingots have been cast, exactly one ingot holding means in the melting position, an ingot holding means in the unloading position and between them in the direction of movement from the melting position to the unloading position three cooling ingots in their ingot-holding means.
  • this ingot can be lifted out of the ingot holding means to a discharge point in the unloading chamber, preferably by the second lifting device.
  • the lifting of the ingot to be unloaded from the ingot holding means in the unloading position has the advantage that the ingot holding means can be made comparatively simple compared with another removal, in particular with respect to a lowering.
  • the ingot retaining means may be simply conical or designed as a pipe section. This makes it easy to achieve that the ingot in an ingot holding means in one direction, namely upwards, is movable.
  • the ingots that are obtainable with the device or the method of this invention preferably have a round, in particular circular, cross-section.
  • the cross section may also be rectangular, in particular square, or polygonal (> 4-square). But there are also other forms conceivable and according to the invention. It will be apparent to those skilled in the art that the basic shape of the ingot is not critical to the operation of the invention. Furthermore, it is possible by customary means to adapt the ingot holding means to the ingot mold.
  • the ingot holding means in the device of the present invention are preferably adapted to receive exactly one ingot each.
  • starter trays are preferably placed in the ingot holding means prior to the start of the melt.
  • the starter bottom is preferably at least partially and in particular made entirely of the same material as the ingot body. If the starter bottom is only partially made of the same material as the ingot body, this is preferably true at least for the area that comes in contact with the melt during casting. Starter bottom and ingot body preferably form the ingot.
  • the starter bottom may preferably already be arranged in the ingot holding means, which is in the melting position, prior to casting the first ingot. The starter tray is then lifted into the mold for pouring the first ingot so that the ingot body can be formed by pouring the melt onto the starter tray.
  • the starter bottom removed together with the ingot body as finished ingot can be replaced by another starter bottom.
  • the new starter bottom is then preferably from the discharge chamber, in particular by the second lifting device, lowered into the ingot chamber on the free ingot holding means in the unloading position and is available for the production of a further ingot body.
  • the unloading chamber has the advantage that the ingot chamber does not need to be flooded with air to unload an ingot. Rather, the melting process can go further, since the discharge chamber serves as a lock to remove the ingots.
  • each ingot preferably has an ingot body and a starter bottom.
  • the starter bottom furthermore preferably has at least one fixing element.
  • the starter bottom can preferably enter into a detachable connection with one or more lifting devices.
  • the lifting device or the lifting devices preferably have one or more fixing units which are suitable for forming a detachable connection between the lifting device and the ingot, in particular the fixing element of a starter base.
  • Fixation unit on the lifting device and fixing element on the starter bottom are preferably suitable to bring about a releasable connection via a clamp. In this case, a Stubklemmung is preferred.
  • the first lifting device preferably has at least one guide means, which in particular has a length which exceeds the height of the ingot chamber, such as a rod or a tube.
  • the guide means may be moved from a location below an ingot holding means, which is in the melting position, so that a starter bottom located in the ingot holding means can be lifted to the mold where the ingot on the starter bottom -Body can train.
  • a fixing unit is preferably arranged at the upper end of the guide means.
  • the lifting device is preferably suitable for lowering an ingot body formed on the starter bottom, which is located immediately below the mold, into the ingot holding means. After the ingot has been lowered into the ingot holding means in the melting position, the detachable connection between the lifting device or guide means is released and preferably the guide means is lowered so far that the ingot holding means is movable.
  • the process is comparable in the unloading position.
  • a releasable connection between the lifting device, in particular guide means, and ingot is produced.
  • the ingot is lifted from the ingot holding means into the discharge chamber.
  • the ingot is preferably fixed so that the detachable connection is detachable.
  • the guide means is lowered, so that the opening between the discharge chamber and ingot chamber can be closed.
  • the moving of the ingot from the ingot holding means at the unloading position can be done such that the ingot is moved to an unloading position located in a discharge chamber.
  • a valve or a lock is located between the discharge chamber and the ingot chamber, so that when removing the ingot from the discharge chamber, the inert gas atmosphere or the vacuum in the ingot chamber can be maintained.
  • the lock or the valve is opened to unload the ingot from the ingot chamber and the ingot in particular mediated passes through the lifting device.
  • the ingot is held in the discharge chamber so that the lifting device can be withdrawn.
  • the sluice or the valve is closed again and the ingot can be removed from the discharge chamber without affecting the inert gas atmosphere or the vacuum in the ingot chamber.
  • the ingots should, at the time of discharge, not exceed a temperature of preferably 500 ° C., more preferably of 400 ° C., since otherwise the reaction of the ingots with atmospheric oxygen is to be feared.
  • the ingots in the ingot chamber of at most 3500 ° C., preferably at most 3000 ° C., more preferably at most 2500 ° C., in particular at most 1500 ° C. or at most 1200 ° C., cool to the said discharge temperature.
  • the ingot chamber preferably has a diameter of at least 1.5 m, more preferably at least 2 m, and most preferably at most 4 m.
  • the ingot chamber is formed substantially cylindrical, so has a circular base.
  • productivity increases of about 50% can be achieved without the device being constructed in a particularly complex manner. Furthermore, the inert gas consumption is reduced because the number and size of the chambers and the number of refills are small.
  • the ingot chamber may preferably be maintained continuously on the process atmosphere.
  • the switching times between individual melts can be reduced by a few orders of magnitude.
  • the cooling of the ingots can be done within the ingot chamber. Since it is preferable to unload only when a plurality of ingots (eg 3, 4, 5 or more) has been poured, this time is sufficient to remove the ingots without risk. Especially with short melting times, the conventional station change is too lengthy and the cooling times too short.

Landscapes

  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Manufacture And Refinement Of Metals (AREA)
  • Continuous Casting (AREA)

Claims (15)

  1. Dispositif de production de lingots (16) en métal ou en alliage métallique, le dispositif comprenant
    a. au moins un dispositif de fusion,
    b. au moins une lingotière (21), la lingotière (21) étant disposée de façon à pouvoir amener son métal ou alliage métallique fondu en provenance du dispositif de fusion,
    c. au moins une chambre à lingot (10), étanche aux gaz, qui est disposée au moins partiellement sous la lingotière (21),
    caractérisé en ce que
    d. la chambre à lingot (10) comporte une pluralité de moyens de retenue de lingot (11) qui sont chacun appropriés pour recevoir au moins un lingot (16),
    e. les moyens de retenue de lingot (11) étant mobiles horizontalement de façon à pouvoir amener
    i. un moyen de retenue de lingot (11) à une position de fusion sous la lingotière (21) pour recevoir un lingot (16), et
    ii. puis à un autre endroit pour libérer la position de fusion pour un autre moyen de retenue de lingot (11).
  2. Dispositif selon la revendication 1, dans lequel les moyens de retenue de lingot (11) sont disposés sur une plaque (15) mobile, en particulier rotative.
  3. Dispositif selon la revendication 1 ou 2, comprenant au moins un premier dispositif de levage (40) qui est approprié pour former une liaison libérable avec un lingot (16) mis en forme à l'aide de la lingotière (21) et pour guider le lingot (16) jusque dans les moyens de retenue de lingot (11) placés dans la position de fusion.
  4. Dispositif selon l'une des revendications 1 à 3, comprenant au moins une chambre de décharge (30) qui est au moins partiellement disposée au-dessus de la chambre à lingot (10) et qui comporte une ouverture qui mène à la chambre à lingot fermée et qui peut être fermée notamment de manière étanche aux gaz.
  5. Dispositif selon la revendication 4, comprenant au moins un deuxième dispositif de levage (40) qui est approprié pour soulever un lingot (16) d'un moyen de retenue de lingot (11) dans la chambre de lingotière (10) jusqu'à une position de déchargement dans la chambre de déchargement (30).
  6. Dispositif selon l'une au moins des revendications 1 à 5, dans lequel le dispositif de fusion comporte au moins un moyen de chauffage qui est de préférence choisi parmi un chalumeau à plasma et/ou un canon à faisceau d'électrons.
  7. Dispositif selon l'une au moins des revendications 1 à 6, dans lequel les moyens de retenue de lingot sont mobiles autour d'un axe de rotation sensiblement vertical.
  8. Dispositif selon l'une au moins des revendications 1 à 7, comprenant au moins quatre moyens de retenue de lingot.
  9. Procédé de fabrication de lingots (16) en métal ou en alliage métallique, le procédé comprenant les étapes visant à
    a. faire fondre un métal ou un alliage métallique,
    b. couler un lingot (16) à partir de la matière fondue au moyen d'une lingotière (21),
    c. abaisser le lingot (16) de la lingotière (21) sur un moyen de retenue de lingot (11) placé dans une chambre à lingot (10), étanche aux gaz, pendant que le moyen de retenue de lingot (11) est dans une position de fusion,
    d. déplacer le moyen de retenue de lingot (11) horizontalement de sorte que le moyen de retenue de lingot (11), occupé par le lingot (16), libère la position de fusion pour un autre moyen de retenue de lingot inoccupé (11),
    e. laisser refroidir le lingot dans le moyen de retenue de lingot (11),
    f. déplacer le moyen de retenue de lingot occupé (11) vers une position de déchargement dans la chambre à lingot (10),
    g. décharger le lingot (16) de la chambre à lingot (10) à la position de déchargement.
  10. Procédé selon la revendication 9, dans lequel le métal ou l'alliage métallique est choisi parmi Ni, Ti, V, Nb, Ta, Zr, Hf ainsi que leurs alliages et des alliages avec ces métaux.
  11. Procédé selon la revendication 9 ou 10, dans lequel l'alliage métallique comprend du TiAl ou est constitué de celui-ci.
  12. Procédé selon l'une des revendications 9 à 11, dans lequel le procédé est mis en oeuvre sous gaz inerte ou sous vide.
  13. Procédé selon la revendication 12, dans lequel le gaz inerte est l'hélium.
  14. Procédé selon la revendication 12 ou 13, dans lequel l'atmosphère de gaz inerte ou le vide règne dans la chambre à lingot.
  15. Procédé selon l'une au moins des revendications 9 à 14, dans lequel, au moment du déchargement, le lingot a une température non supérieure à 500 °C.
EP16722637.2A 2015-05-08 2016-05-09 Dispositif et procédé de fabrication de lingots Active EP3229992B1 (fr)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE102015107258.0A DE102015107258B3 (de) 2015-05-08 2015-05-08 Vorrichtung und Verfahren zur Herstellung von Ingots
PCT/EP2016/060330 WO2016180777A1 (fr) 2015-05-08 2016-05-09 Dispositif et procédé de fabrication de lingots

Publications (2)

Publication Number Publication Date
EP3229992A1 EP3229992A1 (fr) 2017-10-18
EP3229992B1 true EP3229992B1 (fr) 2018-05-02

Family

ID=55969134

Family Applications (1)

Application Number Title Priority Date Filing Date
EP16722637.2A Active EP3229992B1 (fr) 2015-05-08 2016-05-09 Dispositif et procédé de fabrication de lingots

Country Status (6)

Country Link
US (1) US10518318B2 (fr)
EP (1) EP3229992B1 (fr)
JP (1) JP6588991B2 (fr)
CN (1) CN107635695B (fr)
DE (1) DE102015107258B3 (fr)
WO (1) WO2016180777A1 (fr)

Families Citing this family (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE102018109592A1 (de) * 2018-04-20 2019-10-24 Ald Vacuum Technologies Gmbh Schwebeschmelzverfahren
US10875087B1 (en) * 2020-02-20 2020-12-29 Wagstaff, Inc. System, apparatus, and method for mold starter block alignment

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FR1471306A (fr) * 1966-03-03 1967-03-03 G Sojuzny I Proekt Metall Zd O Installation de coulée continue de métaux à évacuation de lingots coupés
JPS5043145Y2 (fr) * 1972-10-17 1975-12-10
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KR20160092619A (ko) * 2015-01-28 2016-08-05 주식회사 포스코 수직형 주조 설비 및 이를 이용한 주조 방법

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Also Published As

Publication number Publication date
JP6588991B2 (ja) 2019-10-09
US20180290205A1 (en) 2018-10-11
CN107635695A (zh) 2018-01-26
WO2016180777A1 (fr) 2016-11-17
DE102015107258B3 (de) 2016-08-04
US10518318B2 (en) 2019-12-31
JP2018514391A (ja) 2018-06-07
EP3229992A1 (fr) 2017-10-18
CN107635695B (zh) 2020-02-14

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