Induction melting

Details Induction melting Induction melting

1989-10-18

1991-04-30

Reynolds, Bruce A.

Industrial electric heating furnaces

Induction furnace device

Power supply system

373148, 373102, 219 1075, 219 1077, H05B 606

Patent

active

050124870

ABSTRACT:
An induction melting apparatus including a vessel for holding a melt of molten metal, an induction coil operatively associated with the vessel, and a power supply for providing power input to the induction coil. The power input has a melting component at a first preselected frequency for operatively holding the melt at a preselected temperature by induction heating and an agitation component at a second preselected and different frequency for agitation of the melt by inducing turbulence therein. The power supply comprises an agitation power supply circuit operatively supplying current to the coil at the second frequency, and a melting power supply circuit including a series resonant circuit through which the melting component is operatively applied to the coil at the first frequency at the same time as the agitation component is applied to the coil. Each supply circuit includes means for regulating the power input component respective thereto independently of and without affecting the other of the power input components.

REFERENCES:
patent: 3478156 (1969-11-01), Segsworth
patent: 3867563 (1975-02-01), Laflin

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