EP0153255B1 - Nebenbecken zum elektromagnetischen Aufpumpen für Giessereiofen - Google Patents

Nebenbecken zum elektromagnetischen Aufpumpen für Giessereiofen Download PDF

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Publication number
EP0153255B1
EP0153255B1 EP85400301A EP85400301A EP0153255B1 EP 0153255 B1 EP0153255 B1 EP 0153255B1 EP 85400301 A EP85400301 A EP 85400301A EP 85400301 A EP85400301 A EP 85400301A EP 0153255 B1 EP0153255 B1 EP 0153255B1
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EP
European Patent Office
Prior art keywords
basin
liquid metal
magnetic circuit
electromagnetic
furnace
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
EP85400301A
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English (en)
French (fr)
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EP0153255A3 (en
EP0153255A2 (de
Inventor
Henri Carbonnel
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Individual
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Individual
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Publication date
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Priority to AT85400301T priority Critical patent/ATE58317T1/de
Publication of EP0153255A2 publication Critical patent/EP0153255A2/de
Publication of EP0153255A3 publication Critical patent/EP0153255A3/fr
Application granted granted Critical
Publication of EP0153255B1 publication Critical patent/EP0153255B1/de
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
    • B22D39/00—Equipment for supplying molten metal in rations
    • B22D39/003—Equipment for supplying molten metal in rations using electromagnetic field

Definitions

  • the present invention relates to an electromagnetic furnace pumping lateral basin intended to transport metal in the liquid state only under the action of electromagnetic forces, to supply molds in the foundry industry in general, but more particularly in that light metals.
  • the invention consists in incorporating inside the lateral basin of an oven the magnetic elements and the liquid coil intended for pumping by integrating them into the ceramic of the oven and transferring the outside of the basin into the ambient air. electrical windings necessary for pumping.
  • FIG. 1 we describe the basic principle which is a transformer with a primary coil 1 and a secondary coil 2 full of liquid metal, open on the furnace on the front face of the coil.
  • the magnetic circuit of the transformer 3 is deformed in the lower part by partial approximation of one or more vertical legs, which will allow the passage of a horizontal leakage field, from the left leg 4 to the right leg 5 of this transformer in the close-up part, the lower horizontal branch 7 being partially short-circuited by the leakage field.
  • the oven could be heated by gas, oil or by an induction system.
  • the electromagnetic pumping system is on the right side of the oven in the side basin.
  • the liquid turn 104 in connection with the oven by the inlet orifice 105 and connected to the outside by the conduit 106.
  • the magnetic circuit 107 is powered by the coil 108.
  • a ceramic partition 109 separates the active vein 104 from the furnace 102 so as to limit the parasitic circulation of the liquid metal between the furnace and the active vein.
  • this active vein of the coil 104 is at an altitude higher than the bottom of the oven and the coil 104 is inclined to descend towards this bottom of the oven which allows the draining of the coil.
  • Figure 3 which is the vertical section of the pelvis at the level of the electromagnetic pumping system, we find the liquid vein 104 and we also see that the inlet vein on the right is at a lower altitude than the active vein. There is also the magnetic circuit 107 and the primary excitation coil 108. The saturation notch 110 in the magnetic circuit is shown in this figure 3.
  • FIG. 4 which is a horizontal section of the lateral basin at the level of the coil 104, we find the magnetic circuit 107, the outlet tube 106 and the ceramic partition 109 partially separating the liquid coil 104 from the oven 102.
  • the electromagnetic pumping system with magnetic saturation shown diagrammatically in FIG. 1 is not limiting. As an example we will give some variants of these electromagnetic pumping systems with magnetic saturation which can be placed under the ceramic of the lateral basin of the furnace, in place of the electromagnetic pumping system of FIG. 1.
  • FIG. 5 One of these variants represented in FIG. 5 consists in using a transformer with three vertical magnetic branches with the middle leg 54 passing through the center of the liquid turn 52.
  • the current in this liquid turn is induced on the one hand, by the vertical leg circuit 57 plus middle leg 54 and partially by the vertical leg circuit 53 plus middle leg 54.
  • the coil 58 will also serve to create the leakage field increased by the saturation notch 56 between the vertical leg 54 and the close portion 55 of the leg 53.
  • the two coils 51 and 58 on the upper horizontal branches can be replaced by a single coil on the central leg 54 without changing the problem.
  • FIG. 6 Another variant, represented in FIG. 6, consists in using a transformer with three vertical magnetic legs with the extreme legs locally brought together to create a pump with two liquid turns superimposed in series.
  • the two diagrams of Laplace's law show that the pumping forces are added.
  • FIG. 7 Another variant, shown in FIG. 7, consists in using the same transformer with three legs with extreme legs close to the middle leg to create a pump with parallel effects in the single turn. Each half-turn is active and rejects the metal upwards. The two outputs can be independent or connected to have the parallel effect which increases the flow.
  • Figure 7 the single coil on the middle leg.
  • FIG. 8 It is likewise possible to use in the same spirit as shown in FIG. 8 a simple transformer with an excitation coil 81 and two vertical legs 83 and 84 with a turn 82 and 87 around each vertical leg between which the common part 88 of these two turns 82 and 87.
  • the front face of these two turns 82 and 87 as well as the common part 88 are open on the main basin of the oven which allows their supply of liquid metal.
  • the common part 88 between the close parts of the vertical legs 83 and 84 will constitute the active vein of our electromagnetic system. In this active vein 88, the currents induced in the two turns 82 and 87 are added in value and in direction.
  • the saturation notch 86 placed here on the lower horizontal branch 89 increases the leakage field Hf.
  • saturation notch 86 can be replaced for example by a progressive narrowing of the two close parts of the two vertical legs 83 and 84, or by the narrowing of the lower horizontal branch 89 or by other known means such as that slots or holes, etc ...
  • the lateral basin of a foundry furnace can be produced with the electromagnetic pumping system, the principle of which has been shown in FIG. 8 placed in the ceramic of this said lateral basin.
  • the magnetic circuit 207 is partially embedded in the ceramic with the active coil 204 and the metal outlet conduit 206.
  • the excitation coil 208 is in the ambient air.
  • the active coil 204 is in connection with the furnace 202 by the metal inlet orifice 205. This active coil of which we see in the figure, because of the section shown, only the active vein 204 and the front parts and rear of the two turns connected to this active vein 204, is at a level higher than the bottom of the oven and the partition 209 descends below the lower level of this turn to limit the parasitic movements of liquid metal between the active vein 204 and the oven 202 through hole 205.
  • FIG. 10 which is a vertical section of the pelvis by the axis of the magnetic circuit, we find the magnetic circuit 207 of the transformer with its excitation coil 208.
  • the active vein 204 is located between the close parts of the vertical legs of the transformer 207.
  • the saturation is obtained here by the progressive narrowing 210 of the parts close to the vertical legs.
  • the two turns 211 and 212 with the common part 204 surround these close parts 210 of the vertical legs and are in connection with the furnace.
  • the turns 211 and 212 have a progressively increasing altitude from the level of the bottom of the oven at the inlet 205 to the level of the active vein 204 at the rear, which allows the emptying of all the liquid turns.
  • the coil 208 is shown here above the basin of the oven but it can also be placed on the side on the front of the basin for example.
  • the outlet tube 206 instead of being inclined could be vertical above the active vein 204 which would allow an outlet pipe connected to the tube 206 to have any orientation.
  • FIG. 11 which is a horizontal section at the height of the active vein, to facilitate understanding, we find the magnetic circuit 207 of the transformer, the active vein 204 with the two turns 211 and 212, the partition 209 and the outlet tube 206 shown in dotted lines because it is at a level higher than the plane of the section.
  • FIG. 12 we have shown another construction variant which consists in pre-molding the electromagnetic pumping system comprising, at least part of the magnetic circuit 307 and at least part of the liquid turn 304, in an identical ceramic block 313 to that of the pelvis or different.
  • the lateral basin 315 is removable and the ceramic 324 of this lateral basin 315 is cast with an interior shape to receive the exterior shape 313 of the ceramic block comprising the electromagnetic pumping system.
  • the fixed part of the oven 316 is fixed on a frame 317 which can receive the removable basin 315.
  • the assembly of the removable basin on the oven is carried out by an ordinary screw-nut system 318 each compressing at least one spring whose role is to press another fiber or alumina felt seal 319 placed between the removable basin 315 and the oven 316.
  • the oven shown assembled and seen from above, has a removable ceramic crucible.
  • the crucible is heated for example by electric rods or even by a set of expanded metal matching the external shape of the crucible or embedded in fibers or the ceramic of the furnace.
  • Figure 14 shows the different parts of the oven disassembled.
  • ovens can be used for all foundry uses: shell, low-pressure, die-casting machines, foundry carousels, vacuum casting with sealed oven, lost wax casting, etc. .. Indeed, such ovens replace electromagnetic ovens or pressure ovens or even the foundry, to cast the metal by gravity or reassemble it in an outlet tube to a mold placed higher or even transfer it outside out of the oven.

Landscapes

  • Physics & Mathematics (AREA)
  • Electromagnetism (AREA)
  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Casting Support Devices, Ladles, And Melt Control Thereby (AREA)
  • General Induction Heating (AREA)
  • Vending Machines For Individual Products (AREA)
  • Valve Device For Special Equipments (AREA)
  • Discharge Lamp (AREA)
  • Fuel-Injection Apparatus (AREA)
  • Electromagnetic Pumps, Or The Like (AREA)
  • Muffle Furnaces And Rotary Kilns (AREA)

Claims (7)

1. Nebenbecken zum elektromagnetischen Aufpumpen für Gießereiöfen, deren elektrische Erregerspulen in der Umluft liegen, dadurch gekennzeichnet, daß mindestens ein Teil der magnetischen Stromkreise des Pumpsystems und mindestens eine der zum Pumpen bestimmte geschmolzenen Metalladern in der Keramikwand des o.a. Beckens liegen.
2. Nebenbecken nach Patentanspruch 1 dadurch gekennzeichnet, daß der Magnetschaltkreis (3) einen magnetisch gesättigten Teil (7) enthält.
3. Nebenbecken nach Patentanspruch 2, dadurch gekennzeichnet, daß der gesättigte Teil (7) des Magnetkreises (3) auf Höhe einer lokaler Näherung der senkrechten Äste des Magnetkreises liegt und somit zwischen diesen Ästen ein magnetisches Kriechfeld durch mindestens eine der von dem elektrischen Induktionsstrom (13) durchlauften flüssigen Metalladern (12) bildet.
4. Nebenbecken nach Patentanspruch 3, dadurch gekennzeichnet, daß die elektromagnetische Pumpanlage 2 sekundäre nebeneinanderliegende Flüssigmetallspiralen (82, 87) benutzt, deren gemeinsamer Mittelteil (88) die aktive Ader bildet, die zwischen den lokal naheliegenden Ästen des magnetischen Versorgungskreises bei lokaler Saturierung von dem elektromagnetischen Kriechfeld zwischen den senkrechten Ästen des Magnetkreises durchquert wird und daß dieses Kriechfeld, in Verbindung mit dem Induktionsstrom (Is) in der flüssigen aktiven Ader die Pumpkraft (Q) des flüssigen Metalles erzeugt.
5. Nebenbecken nach Patentanspruch 1, 2, 3 und 4, dadurch gekennzeichnet, daß das Nebenbeken abgebaut werden kann.
6. Nebenbecken nach Patentanspruch 1, 2 und 3, dadurch gekennzeichnet, daß mindestens 1 Teil der aktiven magnetischen Kreise des elektromagnetischen Systems und mindestens einer der flüssigen Metalladern in einem vorgeformten Keramikblock (313) lagern, der wiederum in der Keramik (324) des Ofens liegt und ausgebaut werden kann.
7. Becken nach Patentanspruch 1, 2, 3, 4, 5 und 6, dadurch gekennzeichnet, daß mindestens 2 elektromagnetische Pumpsysteme in diesem Bekken untergebracht sind.
EP85400301A 1984-02-20 1985-02-20 Nebenbecken zum elektromagnetischen Aufpumpen für Giessereiofen Expired - Lifetime EP0153255B1 (de)

Priority Applications (1)

Application Number Priority Date Filing Date Title
AT85400301T ATE58317T1 (de) 1984-02-20 1985-02-20 Nebenbecken zum elektromagnetischen aufpumpen fuer giessereiofen.

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
FR8402492A FR2559885B1 (fr) 1984-02-20 1984-02-20 Bassin lateral de pompage electromagnetique pour four de fonderie
FR8402492 1984-02-20

Publications (3)

Publication Number Publication Date
EP0153255A2 EP0153255A2 (de) 1985-08-28
EP0153255A3 EP0153255A3 (en) 1987-09-02
EP0153255B1 true EP0153255B1 (de) 1990-11-14

Family

ID=9301168

Family Applications (1)

Application Number Title Priority Date Filing Date
EP85400301A Expired - Lifetime EP0153255B1 (de) 1984-02-20 1985-02-20 Nebenbecken zum elektromagnetischen Aufpumpen für Giessereiofen

Country Status (6)

Country Link
US (1) US4586698A (de)
EP (1) EP0153255B1 (de)
JP (1) JPS60247462A (de)
AT (1) ATE58317T1 (de)
DE (1) DE3580492D1 (de)
FR (1) FR2559885B1 (de)

Families Citing this family (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN101018005B (zh) * 2007-02-15 2011-06-29 沈阳铝镁设计研究院有限公司 直流电磁泵
CN101063211B (zh) * 2007-05-15 2010-11-03 沈阳铝镁设计研究院 一种铝电解槽用直流电磁泵
KR101766105B1 (ko) 2013-03-11 2017-08-07 노벨리스 인크. 마그네틱 펌프 설비

Family Cites Families (8)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2224982A (en) * 1939-03-10 1940-12-17 Whitehall Patents Corp Method of die casting by electrical induction
FR949066A (fr) * 1946-07-12 1949-08-19 Nat Smelting Co Pompe perfectionnée pour l'élévation et le transport des métaux en fusion
US2707718A (en) * 1948-05-26 1955-05-03 Ajax Engineering Corp Induction pump for casting molten metals
GB1192931A (en) * 1966-11-09 1970-05-28 Ass Elect Ind Improvements relating to Metal Treatment Apparatus
US3844453A (en) * 1973-01-05 1974-10-29 Modern Equipment Co Apparatus and method for melting and pouring metal
FR2441946A1 (fr) * 1978-11-15 1980-06-13 Novatome Ind Pompe a conduction pour metal liquide
FR2458937A1 (fr) * 1979-06-07 1981-01-02 Novatome Ind Pompe electromagnetique a conduction pour metal liquide
FR2499330A2 (fr) * 1981-02-04 1982-08-06 Novatome Ind Pompe electromagnetique a conduction pour metal liquide

Also Published As

Publication number Publication date
EP0153255A3 (en) 1987-09-02
ATE58317T1 (de) 1990-11-15
EP0153255A2 (de) 1985-08-28
FR2559885B1 (fr) 1988-06-10
US4586698A (en) 1986-05-06
FR2559885A1 (fr) 1985-08-23
JPS60247462A (ja) 1985-12-07
DE3580492D1 (de) 1990-12-20

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