H - Electricity – 05 – B
Patent
H - Electricity
05
B
307/16
H05B 7/22 (2006.01)
Patent
CA 1073952
ABSTRACT OF THE DISCLOSURE An indirect arc metal melting furnace of the type having an insulated and essentially sealed or closed exterior shell is operated in a novel manner which thereby improves the electrical operating characteristics of the furnace. The operating method involves providing a water-free, oxygen-free, ionizable atmosphere within the crucible; flowing alternating current electrical energy through the electrodes; and controlling the separation between the electrodes to establish a preferred level of electrical input.
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