Apparatus for discharging molten matter from cold crucible induc

Details Apparatus for discharging molten matter from cold crucible induc Apparatus for discharging molten matter from cold crucible induc

1997-12-17

1999-05-04

Hoang, Tu B.

Industrial electric heating furnaces

Induction furnace device

For charging or discharging

373146, 373156, 373 59, 75 1014, 588 19, F27D 300

Patent

active

059011696

ABSTRACT:
Molten matter is discharged from a cold crucible induction melting furnace provided with a furnace body disposed within a high-frequency coil for heating the furnace body. A metallic discharging nozzle extends downwardly from an inner bottom portion of the furnace body and can be electrically insulated from the furnace body. A high-frequency coil for heating the discharging nozzle is disposed around the nozzle. An electric circuit for removing high-frequency noise generated from the high-frequency coil for heating the furnace body is disposed in the high-frequency coil for heating the nozzle. High reliability and high controllability can be achieved without electric short-circuits between the furnace body and the nozzle and noise interference between the high-frequency coils.

REFERENCES:
patent: 3702368 (1972-11-01), Hukin
patent: 4402724 (1983-09-01), Weisenburger et al.
patent: 4762553 (1988-08-01), Savage et al.
patent: 4770718 (1988-09-01), Verhoeven et al.
patent: 4811356 (1989-03-01), Havas
patent: 5060914 (1991-10-01), Wang et al.
patent: 5164097 (1992-11-01), Wang et al.
patent: 5457264 (1995-10-01), Kobayashi et al.
patent: 5564102 (1996-10-01), Igarashi et al.

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