EP1165275B1 - Procede pour alimenter un moule en metal fondu et appareil pour la mise en oeuvre de ce procede - Google Patents

Procede pour alimenter un moule en metal fondu et appareil pour la mise en oeuvre de ce procede Download PDF

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Publication number
EP1165275B1
EP1165275B1 EP99911636A EP99911636A EP1165275B1 EP 1165275 B1 EP1165275 B1 EP 1165275B1 EP 99911636 A EP99911636 A EP 99911636A EP 99911636 A EP99911636 A EP 99911636A EP 1165275 B1 EP1165275 B1 EP 1165275B1
Authority
EP
European Patent Office
Prior art keywords
pump
filling
filling head
oven
movement
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.)
Expired - Lifetime
Application number
EP99911636A
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German (de)
English (en)
Other versions
EP1165275A1 (fr
Inventor
Torben Hansen
Per Rud Jorgensen
Niels Winther Rasmussen
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.)
Disa Industries AS
Original Assignee
Disa Industries AS
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 Disa Industries AS filed Critical Disa Industries AS
Publication of EP1165275A1 publication Critical patent/EP1165275A1/fr
Application granted granted Critical
Publication of EP1165275B1 publication Critical patent/EP1165275B1/fr
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

Definitions

  • the present invention relates to counter-gravity casting and more specifically the supply of molten metal to the moulds in a plant, in which the moulds are filled by pumping the molten metal into the mould cavities via a filling head temporarily connected to a filling opening in the mould, the moulds being held stationary and the filling head being moved axially and if necessary laterally for providing the temporary connection.
  • a casting process of the above-mentioned kind will normally comprise melting down of raw material, e.g. aluminium, in a melting oven.
  • the molten metal is transferred to a buffer oven, in which the molten metal is prepared for casting by temperature regulation, alloy addition, degasification, mixing, etc. From the buffer oven, the molten metal is transferred to the pump oven and pumped through the filling tube and filling head into the moulds.
  • the ovens are preferably constructed as substantially closed containers.
  • the mould-string plant shown in Figure 1 is considered to be well-known and will, therefore, not be explained in detail.
  • the mould cavities 1 are filled with molten metal, in order to produce the desired moulded articles.
  • a filling head 2 is brought into engagement with a filling opening 3 in the mould and the molten metal is pumped into the mould through the filling head 2.
  • the mould is filled by pumping the molten metal into the mould cavity and the filling opening 3 is closed in a convenient manner as e.g. known from EP-760723. After closing the filling opening 3, the pump 8 pressure is reduced and the filling head 2 may be retracted from the mould ready for engagement with the next mould in the string 4.
  • the molten metal for filling the moulds is provided by melting raw material metal in a melting oven 5, from which the molten metal is transferred to a buffer oven 6, in which the molten metal is prepared for casting by temperature regulation, degasification, alloy addition, mixing, etc. From the buffer 6, molten metal is transferred to the pump oven 7, which has a relatively low capacity, from which the molten metal is pumped 8 to the filling head 2 via a filling tube 9.
  • the pumping may be performed by means of an electromagnetic pump 8 or a pressure activated pump which is immersed into the molten metal and is connected to the filling tube 9 and filling head 2.
  • Another possibility of pumping the molten metal from the pump oven 7 is by setting the inside of the pump oven 7 under pressure whereby the molten metal will rise up into an immersed filling tube 9 connected to the filling head 2. This last pumping method presupposes that the pump oven 7 can be completely closed, in order to be able to create a sufficient over-pressure inside the pump oven 7.
  • each of the ovens 5, 6 and 7 are constructed as closed containers, in order to be able to control the atmosphere above the molten metal.
  • the connections between the different ovens are made from rigid materials, due to the fact that all elements in contact with the molten metal must be made of ceramic material or the like, which is able to withstand the influences from the molten metal.
  • the whole system of ovens may be made gas-tight without flexible seals. This would, however, require that in order to provide the lateral and axial movement of the filling head 2, the whole system consisting of melting oven 5, buffer oven 6 and pump oven 7, including pump 8 and filling tube 9, should be moved both laterally and axially to provide the desired lateral and axial movement of the filling head 2.
  • the movability needed to provide a lateral and axial movement of the filling head 2, respectively can be provided between any two successive mutually connected components, i.e. filling head 2-filling tube 9, filling tube 9-pump 8, pump 8-pump oven 7, pump oven 7-buffer oven 6, and buffer oven 6-melting oven 5. It must here be emphasized that the movability for the lateral movement need not be provided at the same place as the movability for the axial movement. By splitting the movability up, the movability can be made as a purely linear movability in each of the movability points in the system.
  • the movability for this movement is preferably positioned as close as possible to the filling head 2 in order to reduce the mass to be moved.
  • the axial movement is provided by movement of the pump 8, the filling tube 9 and the filling head 2 as one unit relative to the pump oven 7, and a possible sealing 10 between the pump 8 and the pump oven 7 is provided by having the pump mounted in a movable lid 11 on the pump oven 7.
  • the lateral movement may be provided by moving the pump oven 7 and a movable connection may be provided between the pump oven 7 and the buffer oven 6, e.g. by means of a linkage connection 14.
  • the sealing 10 between the pump 8 and the pump oven 7 is preferably provided by mounting the pump 8 in a lid 11 which is slidingly movable relative to the pump oven 7, and the sealing 10 between the lid 11 and the pump oven 7 is provided in the form of a flexible fibre-ceramic sealing mounted on one part and in sliding engagement with the other part.
  • FIG. 3 An example of such a construction is shown in Figure 3, in which the pump 8 is mounted in a pump lid 11 which is laterally and axially movable together with the pump 8.
  • Two pump oven lids 12, 13 are provided to the lateral sides of the pump lid 11, these pump oven lids 12, 13 being movable only in the lateral direction.
  • the pump lid 11 is provided with flanges at the front and back, which are slidingly engaging flexible sealing elements 10 mounted on the corresponding top edges of the pump oven 7. Furthermore, the side edges of the pump lid 11 are provided with vertical flanges slidingly engaging flexible sealing elements 10 mounted on the corresponding adjacent vertical edges of the two pump oven lids 12, 13.
  • the two pump oven lids 12, 13 are provided with flanges at the front and back, which are slidingly engaging the above-mentioned flexible sealing elements 10 mounted on the corresponding top edges of the pump oven 7, and these lids are further provided with flexible sealing elements 10 along their edges opposite the edges engaging the pump lid 11, said sealing elements 10 sealingly engaging a large surface flange positioned to the lateral sides of the pump oven 7.
  • these lids 12, 13 are provided with rollers running on rails positioned along the front and back edges of the pump oven 7 on the outside of the sealing elements 10.
  • the pump lid 11 is fixed to the pump 8 which is mounted on a two-axes-slide system for providing the lateral and axial movement of the filling head 2, filling tube 9, pump 8 and pump lid 11 together, the pump oven lids 12, 13 being connected to that part of the slide system which is providing the lateral movement.
  • the construction shown has the further function of permitting removal of the pump 8 and pump lid 11 from the pump oven 7, whereafter the two pump oven lids 12, 13 can be brought together to close off the pump oven 7 from the surroundings. This will be an advantage in connection with starting up and closing down the system.
  • the flexible sealing elements 10 are preferably made of a fibre-ceramic material.
  • Figure 4 shows how a pivotal movement of the pump 8, filling tube 9 and filling head 2 in connection with an appropriate construction of the filling tube 9 provides an axial movement of the filling head 2. Furthermore, Figure 4 shows a linkage connection 14 between the buffer oven 6 and the pump oven 7 for providing the necessary flexibility between those two parts in order to be able to move the pump oven 7 in the lateral direction and keeping the buffer oven 6 stationary.
  • Figure 5 shows a corresponding construction, in which the pivotal movement of the pump 8, filling tube 9 and filling head 2 is performed in a vertical plane, i.e. a tilting of those parts relative to the pump oven 7.
  • Figure 6 shows a linear movement of the same components, where the movement is performed in a plane forming an angle with the horizontal plane.

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  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Basic Packing Technique (AREA)
  • Casting Support Devices, Ladles, And Melt Control Thereby (AREA)
  • Reciprocating Pumps (AREA)

Claims (10)

  1. Procédé d'alimentation en métal fondu d'un moule dans une installation par un système d'alimentation, dans lequel les moules sont remplis par refoulement du métal fondu dans les cavités de moulage, via une tête de remplissage (2) qui est temporairement reliée à une ouverture de remplissage (3) dans le moule, les moules étant fixes et la tête de remplissage (2) étant déplacée axialement et, si nécessaire, latéralement pour constituer la connexion temporaire, le système d'alimentation comprenant un four à pompe (7), une pompe (8) un tube de remplissage (9) et ladite tête de remplissage (2) pour venir en alignement avec ladite ouverture de remplissage (3) du moule et, en option, un four de fusion (5) et un four tampon (6),
       comprenant les étapes consistant:
    à déplacer la tête de remplissage (2) latéralement, pour venir en correspondance avec la position latérale de l'ouverture de remplissage (3) du moule, et
    à déplacer la tête de remplissage (2) axialement, pour venir en correspondance eavec la position axiale de l'ouverture de remplissage (3) du moule,
       caractérisé en ce qu'au moins l'un parmi lesdits fours de fusion (5), four tampon (6), four à pompe (7), pompe (8) et tube de remplissage (9) présents dans le système d'alimentation est fixé dans au moins l'une desdites directions latérales et axiales, respectivement, durant le déplacement de la tête de remplissage (2).
  2. Procédé selon la revendication 1, caractérisé par le fait de prévoir des connexions (14)/joints d'étanchéité (10) mobiles appropriés entre les parties (5 à 8), qui, durant le déplacement latéral et axial, respectivement, de la tête de remplissage (2), sont déplacées l'une par rapport à l'autre.
  3. Procédé selon la revendication 1 ou 2, caractérisé par le fait que le déplacement axial de la tête de remplissage (2) est assuré en déplaçant la tête de remplissage (2), le tube de remplissage (9) et la pompe (8) par rapport au reste du système.
  4. Procédé selon la revendication 1 ou 2, caractérisé par le fait que le déplacement axial de la tête de remplissage (2) est assuré par un déplacement axial de la tête de remplissage (2) et du tube de remplissage (9) par rapport au reste du système.
  5. Procédé selon la revendication 1 ou 2, caractérisé par le fait que le déplacement axial du tube de remplissage (2) est assuré par un déplacement pivotant de la tête de remplissage (2) et du tube de remplissage (9), éventuellement conjointement avec la pompe (8), ledit déplacement de pivotement assurant la composante axiale du déplacement de la tête de remplissage (2).
  6. Procédé selon la revendication 5, caractérisé par le fait que ledit déplacement de pivotement est effectué dans un plan horizontal (rotation) ou dans un plan vertical (inclinaison).
  7. Procédé selon la revendication 1 ou 2, caractérisé par le fait que le déplacement axial de la tête de remplissage (2) est assuré par un déplacement linéaire de la tête de remplissage (2) et du tube de remplissage (9), éventuellement conjointement avec la pompe (8), ledit déplacement linéaire constituant une composante axiale de déplacement pour la tête de remplissage (2).
  8. Procédé selon la revendication 7, caractérisé par le fait que ledit déplacement linéaire est effectué sous un angle par rapport à la direction axiale.
  9. Système d'étanchéité destiné à être utilisé dans un procédé selon l'une quelconque des revendications précédentes, dans lequel au moins l'un parmi les déplacements latéral et axial, respectivement, est effectué par déplacement de la pompe (8) et du tube de remplissage (9), conjointement avec la tête de remplissage (2), caractérisé par le fait que la pompe (8) est positionnée dans un couvercle (11) placé en haut du four à pompe (7), ledit couvercle (11) étant en contact de pression avec une bride correspondante sur le four à pompe (7), un matériau d'étanchéité (10) étant prévu entre le couvercle (11) et la bride du four à pompe (7).
  10. Système d'étanchéité selon la revendication 9, caractérisé par le fait que le matériau d'étanchéité (10) est prévu sous la forme d'un matériau céramique fibreux, flexible.
EP99911636A 1999-03-29 1999-03-29 Procede pour alimenter un moule en metal fondu et appareil pour la mise en oeuvre de ce procede Expired - Lifetime EP1165275B1 (fr)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
PCT/DK1999/000183 WO2000058042A1 (fr) 1999-03-29 1999-03-29 Procede pour alimenter un moule en metal fondu et appareil pour la mise en oeuvre de ce procede

Publications (2)

Publication Number Publication Date
EP1165275A1 EP1165275A1 (fr) 2002-01-02
EP1165275B1 true EP1165275B1 (fr) 2002-11-13

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EP99911636A Expired - Lifetime EP1165275B1 (fr) 1999-03-29 1999-03-29 Procede pour alimenter un moule en metal fondu et appareil pour la mise en oeuvre de ce procede

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Country Link
EP (1) EP1165275B1 (fr)
JP (1) JP2002539953A (fr)
AU (1) AU3025199A (fr)
DE (1) DE69903980T2 (fr)
WO (1) WO2000058042A1 (fr)

Families Citing this family (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE10112621A1 (de) * 2001-03-14 2002-09-19 Km Europa Metal Ag Anordnung zum Abgießen einer aus einer Kupferlegierung bestehenden Gießschmelze
AT514717B1 (de) * 2013-05-16 2017-07-15 Lkr Leichtmetallkompetenzzentrum Ranshofen Gmbh Verfahren und Vorrichtung zum Fördern von Schmelze
CN109482850B (zh) * 2018-12-12 2020-08-18 西安交通大学 一种数字控制的定量称重式多工位连续浇注机

Family Cites Families (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2468704A (en) * 1947-10-11 1949-04-26 Dow Chemical Co Apparatus for handling molten magnesium and its alloys
FR2059966A1 (fr) * 1969-08-06 1971-06-11 Peugeot & Renault
EP0102018B1 (fr) * 1982-08-26 1987-07-01 INTERATOM Gesellschaft mit beschränkter Haftung Procédé et dispositif pour convoyer du métal en fusion
DE4116998A1 (de) * 1991-05-24 1992-11-26 Ats Beteiligungs Gmbh Verfahren zum giessen von leichtmetallteilen aus magnesium sowie giessanlage zur durchfuehrung des verfahrens
EP0615476B1 (fr) * 1991-12-07 1999-04-21 Alloy Technologies Limited Coulage d'alliages de metaux legers
RU2127172C1 (ru) * 1994-05-27 1999-03-10 Георг Фишер Диса А/С Способ закрытия входа в литейную форму после неграфитационного литья нежелезного сплава в сырые литейные формы рядной устанвоки (варианты)

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Publication number Publication date
DE69903980D1 (de) 2002-12-19
EP1165275A1 (fr) 2002-01-02
AU3025199A (en) 2000-10-16
WO2000058042A1 (fr) 2000-10-05
DE69903980T2 (de) 2003-07-03
JP2002539953A (ja) 2002-11-26

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