EP3256278B1 - Dispositif de coulée pour couler un métal fondu et procédé pour faire fonctionner un tel dispositif de coulée - Google Patents

Dispositif de coulée pour couler un métal fondu et procédé pour faire fonctionner un tel dispositif de coulée Download PDF

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Publication number
EP3256278B1
EP3256278B1 EP16703800.9A EP16703800A EP3256278B1 EP 3256278 B1 EP3256278 B1 EP 3256278B1 EP 16703800 A EP16703800 A EP 16703800A EP 3256278 B1 EP3256278 B1 EP 3256278B1
Authority
EP
European Patent Office
Prior art keywords
pouring
casting
rings
ladle
casting ladle
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.)
Not-in-force
Application number
EP16703800.9A
Other languages
German (de)
English (en)
Other versions
EP3256278A1 (fr
Inventor
Holger Krings
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.)
Otto Junker GmbH
Original Assignee
Otto Junker 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 Otto Junker GmbH filed Critical Otto Junker GmbH
Publication of EP3256278A1 publication Critical patent/EP3256278A1/fr
Application granted granted Critical
Publication of EP3256278B1 publication Critical patent/EP3256278B1/fr
Not-in-force legal-status Critical Current
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
    • B22D35/00—Equipment for conveying molten metal into beds or moulds
    • B22D35/04—Equipment for conveying molten metal into beds or moulds into moulds, e.g. base plates, runners
    • 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
    • B22D39/06—Equipment for supplying molten metal in rations having means for controlling the amount of molten metal by controlling the pressure above the molten metal
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B22—CASTING; POWDER METALLURGY
    • B22D—CASTING OF METALS; CASTING OF OTHER SUBSTANCES BY THE SAME PROCESSES OR DEVICES
    • B22D41/00—Casting melt-holding vessels, e.g. ladles, tundishes, cups or the like
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B22—CASTING; POWDER METALLURGY
    • B22D—CASTING OF METALS; CASTING OF OTHER SUBSTANCES BY THE SAME PROCESSES OR DEVICES
    • B22D47/00—Casting plants

Definitions

  • the invention relates to a device for pouring off individual molds with a metallic melt, in particular liquid iron, with a stationary pouring ladle having a lid, a sprue and a spout, to which the molds are fed via a conveyor along a pouring path, the spout being the pouring ladle has at least two pouring nozzles and a method for operating such a pouring device.
  • Casting devices have long been known in the most varied of designs from practice.
  • a pouring ladle is filled with a metallic melt, which is tilted or swiveled during pouring, so that the melt is poured into a mold to be poured via a pouring spout. Due to the large masses, only small and medium-sized pans are tilted or swiveled when pouring. Large pans, on the other hand, are usually emptied by pulling a stopper.
  • pouring ladles with several pouring openings - mostly in the form of a double pouring spout - have already been developed in order to achieve a simultaneous pouring of several forms.
  • the US-A-3,058,180 shows a casting device of the generic type. There, the pouring ladle also has several pouring spouts if several casting molds have to be poured at the same time. Said device offers however, not the possibility of compensating for differences in the distance between mold openings.
  • the invention is based on the object of designing and developing the above-mentioned device for casting individual molds with a metallic melt in such a way that it can be used as universally as possible to achieve high casting performance.
  • the at least one pivotable pouring spout is rotatably arranged on the pouring ladle by means of a firmly connected riser pipe.
  • the riser pipe can be flanged to the pouring spout, but it is also possible to provide part of the riser pipe in a corresponding opening in the pouring spout.
  • Such an opening and the corresponding shape of the pouring pipe can be cylindrical or conical.
  • Each riser pipe is preferably made of ceramic material in order to control the temperatures of the liquid melt inside the pouring ladle.
  • the pouring ladle has a forehearth on which the pouring spouts are mounted. In this way the lid of the ladle remains freely accessible.
  • the at least one pivotable pouring spout may be arranged in the lid of the pouring ladle itself.
  • the pouring ladle has two pivotable pouring nozzles. This is particularly useful because, when the distance between the two pouring points is adjusted, both pouring nozzles can be pivoted towards or away from one another at the same time in order to be able to carry out the pivoting process in the shortest possible time.
  • each pouring spout has a pouring opening (so-called nozzle block) that can be closed by means of a stopper above the pouring section. This allows very precise dosing when pouring.
  • the pouring ladle has an inductor for keeping the melt warm and possibly circulating it, which is preferably arranged at the bottom of the pouring ladle.
  • each rotatable riser pipe for sealing to the fixed cover of the forehearth or the pouring ladle has a seal which comprises a plurality of O-rings arranged one above the other and / or concentrically.
  • O-rings There is preferably a plurality of O-rings arranged one above the other and an annular channel is formed between at least two O-rings, which at least can be acted upon by compressed air via a line.
  • Packets” of O-rings can be compressed to such an extent by the application of pressure that an optimal seal of the lid / riser pipe joint is guaranteed.
  • a further embodiment of the invention provides that there is a plurality of O-rings arranged one above the other and that an annular channel is formed between at least two O-rings, to which compressed air can be applied via at least one line.
  • At least one annular space for cooling the seal is provided between the riser pipe and the O-rings.
  • O-rings used are designed as thermal seals in order to withstand the stresses caused by the high ambient temperatures.
  • the O-rings arranged one above the other can be pressed onto one another by means of a mechanical tensioning device, such as a tension ring.
  • a mechanical tensioning device such as a tension ring.
  • Such a configuration can, so to speak, serve as an “abutment” on one side of the O-rings arranged one above the other when the seals are pressed together from the other side by the compressed air of the ring channel.
  • the mechanical tensioning device exerts even pressure on the top and / or bottom sealing surface of the O-rings used so that an optimal seal is reliably guaranteed.
  • a method for operating a device according to one of claims 1 to 10 achieves the aforementioned object of the present invention in that the pouring takes place automatically.
  • the method for operating a device according to claim 10 or 11 is carried out in such a way that the annular channel and / or the annular space can / can be actively cooled.
  • a pouring ladle 1 with a closed lid 2 initially has a sprue 3 and, instead of a spout, in the preferred case a forehearth 4 on which - in the illustrated case - two pouring nozzles 5 can be pivoted about a vertical axis A (only in FIG Fig. 2 shown) and are each in contact via a flange-mounted riser 6 with a melt 7 located in the interior of the pouring ladle 1.
  • the melt 7 may only be emptied up to a sump line 8 so that no gas can get into the riser 6.
  • this can be guaranteed by precise monitoring of the furnace pressure. Alternatively or additionally, this can be guaranteed by monitoring the weight of the oven and its contents.
  • the pouring ladle 1 is filled almost up to the upper edge of the forehearth 4 and the respective melting level 9 is correspondingly drawn both in the interior of the pouring ladle 1 and in the pouring spout 5.
  • the volumes of the molds F are relatively small in relation to the pouring nozzles 5 and so in the example shown, only every second mold F is filled at the same time with one casting process, which also has advantages in terms of casting technology.
  • the pouring nozzles 5 can be pivoted towards or away from each other, so that the distance between the two pouring points can be adjusted from a - structurally predetermined - minimum value to a maximum value.
  • the position of the pouring spouts 5 can be adjusted or readjusted while the molds F are being advanced. For this purpose, only the distance between the two openings 0 to be filled needs to be detected, which can already take place on the casting line before reaching the casting station.
  • the pouring ladle 1 also has an inductor 12 on its underside so that the melt 7 contained in it can be kept at the desired temperature.
  • a channel inductor is preferably used for this purpose, so that circulation of the melt is also possible in this way.
  • O-rings 14 and 15 designed as thermal seals, of which five seals 14 with identical dimensions are arranged one above the other and the two lowest O-rings 15 are arranged concentrically inside one another per seal 13. Due to the pressurization of the interior of the pouring ladle 1, the seal 13 must be made pressure-tight. For this purpose, a counter pressure must be built up on the seals 14, 15. It can be seen that for this purpose, between the lower three O-rings 14 and the two O-rings arranged above 14 an annular channel 16 runs. This can be connected via lines 17 and 18 to a source of compressed air or another gas under pressure. Although a single pressure line would be sufficient to act on the annular channel 16, the embodiment shown has the advantage that compressed air or the like can be supplied and discharged at the same time. This can be done quantified through the use of suitable throttle devices.
  • annular space 19 for cooling the seal 13 is provided between each riser pipe 6 and the O-rings 14, which (with corresponding unspecified walls) inwards from the riser pipe 6 and after is limited on the outside by the O-ring packets 14 or the ring channel 16.
  • the annular space 19 By connecting the annular space 19 to the annular channel 16, active and very effective cooling of each seal 13 can be achieved.
  • the O-ring packs 14 can be compressed even further from above by means of an adjustable clamping ring 20 in order to improve their sealing effect.
  • Figures 4 and 5 yet another embodiment of the invention.
  • analogous representation shows a pouring ladle 1 'with a lid 2' and a sprue 3 ', with the two pouring nozzles 5' pivotable about a vertical axis A (only in Fig. 5 shown) are rotatably attached to the cover 2 'of the pouring ladle 1' and each via a flange-mounted riser pipe 6 'with a melt 7 located inside the pouring ladle 1 as before Fig. 1 are in contact.

Landscapes

  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Casting Support Devices, Ladles, And Melt Control Thereby (AREA)

Claims (17)

  1. Dispositif de remplissage de différents moules avec une masse fondue métallique (7), en particulier avec du fer liquide, ledit remplissage étant effectué avec une poche de coulée (1, 1') disposée en étant stationnaire et présentant un couvercle (2, 2'), une descente de coulée (3, 3') et une busette de coulée, dispositif auquel sont amenés les moules (F), par un convoyeur (C), le long d'une ligne de coulée, où la busette de coulée de la poche de coulée (1, 1') présente au moins deux becs de coulée (5, 5'),
    caractérisé en ce qu'au moins un bec de coulée (5, 5') est disposé en pouvant pivoter autour d'un axe vertical (A), de manière telle que la distance des points de coulée puisse être variable.
  2. Dispositif selon la revendication 1,
    caractérisé
    en ce que le bec de coulée (5, 5') au moins au nombre de un, qui peut pivoter, est disposé en pouvant tourner sur la poche de coulée (1, 1') au moyen d'un tuyau de montée (6, 6') solidement assemblé.
  3. Dispositif selon la revendication 2,
    caractérisé en ce que
    chaque tuyau de montée (6, 6') se compose d'un matériau en céramique.
  4. Dispositif selon l'une quelconque des revendications 1 à 3,
    caractérisé en ce que
    la poche de coulée (1) présente un avant creuset (4) et en ce que les becs de coulée (5) sont montés sur l'avant-creuset (4).
  5. Dispositif selon l'une quelconque des revendications 1 à 3,
    caractérisé en ce que
    le bec de coulée (5') au moins au nombre de un, qui peut pivoter, est disposé dans le couvercle (2') de la poche de coulée (1').
  6. Dispositif selon l'une quelconque des revendications 1 à 5,
    caractérisé en ce que
    la poche de coulée (1, 1') présente deux becs de coulée (5, 5') qui peuvent pivoter.
  7. Dispositif selon l'une quelconque des revendications 1 à 6,
    caractérisé en ce que
    chaque bec de coulée (5, 5') présente, au dessus de la ligne de coulée, une ouverture de coulée (10) pouvant être fermée au moyen d'un bouchon (9).
  8. Dispositif selon l'une quelconque des revendications 1 à 7,
    caractérisé en ce que
    la poche de coulée (1, 1') présente un inducteur, ledit inducteur servant au maintien à température et, le cas échéant, à la circulation de la masse fondue.
  9. Dispositif selon l'une quelconque des revendications 2 à 8,
    caractérisé en ce que
    chaque tuyau de montée (6, 6'), qui peut tourner, présente un joint d'étanchéité (13) prévu pour assurer l'étanchéité par rapport au couvercle fixe (2, 2') de l'avant-creuset (4) ou de la poche de coulée (1'), lequel joint d'étanchéité comprend une pluralité de joints toriques disposés en étant superposés les uns aux autres et/ou disposés de façon concentrique.
  10. Dispositif selon la revendication 9,
    caractérisé
    en ce qu'une pluralité de joints toriques (14) disposés en étant superposés les uns aux autres est fournie, et en ce qu'un canal annulaire (16) est formé entre au moins deux joints toriques (14), lequel canal annulaire peut être alimenté en air comprimé par au moins une conduite (17, 18).
  11. Dispositif selon la revendication 10,
    caractérisé
    en ce qu'il est prévu au moins un espace annulaire (19) servant au refroidissement du joint d'étanchéité (13), ledit espace annulaire étant placé entre le tuyau de montée (6) et des joints toriques (14).
  12. Dispositif selon la revendication 11,
    caractérisé en ce que
    l'espace annulaire (19) est relié au canal annulaire (16).
  13. Dispositif selon la revendication 9 ou 11,
    caractérisé en ce que
    la totalité des joints toriques ou bien quelques-uns d'entre aux sont conçus comme des joints d'isolation thermique.
  14. Dispositif selon l'une quelconque des revendications 9 à 11,
    caractérisé en ce que
    les joints toriques (14) disposés en étant superposés les uns aux autres peuvent être pressés les uns contre les autres au moyen d'un dispositif de serrage mécanique (20).
  15. Procédé pour faire fonctionner un dispositif selon l'une quelconque des revendications 1 à 14,
    caractérisé en ce que
    le remplissage se produit de manière automatisée.
  16. Procédé selon la revendication 15,
    caractérisé en ce que
    le remplissage se produit par mise sous pression de la masse fondue (7) se trouvant dans la poche de coulée (1, 1').
  17. Procédé selon la revendication 10 ou 11,
    caractérisé en ce que
    le canal annulaire (16) et/ou l'espace annulaire (19) peut / peuvent être refroidi(s) activement.
EP16703800.9A 2015-02-10 2016-02-10 Dispositif de coulée pour couler un métal fondu et procédé pour faire fonctionner un tel dispositif de coulée Not-in-force EP3256278B1 (fr)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE102015101901.9A DE102015101901B4 (de) 2015-02-10 2015-02-10 Gießvorrichtung zum Abgießen einer metallischen Schmelze
PCT/EP2016/052850 WO2016128481A1 (fr) 2015-02-10 2016-02-10 Dispositif de coulée pour couler un métal fondu et procédé pour faire fonctionner un tel dispositif de coulée

Publications (2)

Publication Number Publication Date
EP3256278A1 EP3256278A1 (fr) 2017-12-20
EP3256278B1 true EP3256278B1 (fr) 2020-09-02

Family

ID=55345831

Family Applications (1)

Application Number Title Priority Date Filing Date
EP16703800.9A Not-in-force EP3256278B1 (fr) 2015-02-10 2016-02-10 Dispositif de coulée pour couler un métal fondu et procédé pour faire fonctionner un tel dispositif de coulée

Country Status (3)

Country Link
EP (1) EP3256278B1 (fr)
DE (1) DE102015101901B4 (fr)
WO (1) WO2016128481A1 (fr)

Families Citing this family (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE102018106078B4 (de) 2018-03-15 2019-10-31 EKW Gesellschaft mit beschränkter Haftung Ausgussstein
CN112756591A (zh) * 2020-12-25 2021-05-07 安徽应流集团霍山铸造有限公司 一种解决铸件浇注过程中金属液吸气和氧化的装置

Family Cites Families (12)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE742183C (de) * 1940-12-03 1943-11-24 Eduard Scholle Kippbares Giessgefaess fuer Metall
GB626795A (en) * 1947-06-04 1949-07-21 H J Enthoven & Sons Ltd Means for effecting intermittent automatic delivery of liquid derived from a bulk supply
US3058180A (en) * 1961-10-11 1962-10-16 Modern Equipment Co Apparatus for pouring molten metal
US3631915A (en) * 1969-12-29 1972-01-04 Arthur L Perry Metal-pouring apparatus for a smelting furnace
DE7246692U (de) * 1972-04-26 1973-04-05 Regie Nationale Des Usines Renault Boulogne Billancourt Doppelgießpfanne für geschmolzene Metalle oder Metallegierungen
SE401989B (sv) * 1974-11-11 1978-06-12 Asea Ab Anordning for dosering av smelta, exempelvis jern- eller stalsmelta fran en trycktappnigsugn
JPS55153664A (en) * 1979-05-15 1980-11-29 Toyota Motor Corp Sprue searching device of automatic pouring machine for casting
US5465777A (en) * 1994-05-18 1995-11-14 The Budd Company Contact pouring
DE19821946A1 (de) 1998-05-15 1999-11-18 Friedhelm Kahn Verfahren und Vorrichtungen zum automatischen Gießen von Bauteilen durch quantifiziertes Füllen eines Raumes mit geschmolzenem Metall
JP4503743B2 (ja) * 1999-10-22 2010-07-14 助川電気工業株式会社 溶融金属供給装置
US6896032B1 (en) * 2002-09-26 2005-05-24 Hayes Lemmerz International, Inc. Stopper-poured molten metal casting vessel with constant head height
US20060191660A1 (en) 2003-06-14 2006-08-31 Künkel-Wagner SLS Swisspour AG Casting machine

Non-Patent Citations (1)

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

Also Published As

Publication number Publication date
DE102015101901A1 (de) 2016-08-11
DE102015101901B4 (de) 2017-03-09
EP3256278A1 (fr) 2017-12-20
WO2016128481A1 (fr) 2016-08-18

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