Process for melting an electroconductive material in a cold cruc

Details Process for melting an electroconductive material in a cold cruc Process for melting an electroconductive material in a cold cruc

1994-07-28

1996-10-08

Hoang, Tu

Industrial electric heating furnaces

Induction furnace device

With means for manipulation of the charge or melt

373142, 373156, 222594, 266237, F27D 2304, H05B 634

Patent

active

055639046

ABSTRACT:
A process for melting an electroconductive material (1) in a melting furnace (10) by induction in a cold crucible includes electromagnetically confining a mass of the electroconductive material (1) up to its melting temperature. Then, at least one vortex is created in the liquid material to inclusion particles contained in the liquid electroconductive material. The vortex or vortices are created by electromagnetic stirring. A part of the mass of the liquid electroconductive material (1) is poured in a pouring tube (15) disposed under the melting furnace (10), subjecting the jet of the pouring of the liquid electroconductive material (1) to a radial electromagnetic confinement, and ensuring a vertical coaxial alignment of the electromagnetic fields acting on the mass of liquid electroconductive material (1) and on the pouring jet of the mass. An induction melting furnace employing a cold crucible for carrying out this is also disclosed.

REFERENCES:
patent: 4082207 (1978-04-01), Garnier et al.
patent: 4863509 (1989-09-01), Metz
patent: 5074532 (1991-12-01), Ducrocq et al.
patent: 5102449 (1992-04-01), Ducrocq et al.
patent: 5280496 (1994-01-01), Schlecht et al.

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