Inductive melting apparatus for melting metals has an alternating current supply comprising an inverter for each coil and a control unit providing in-phase and out-of-phase switching states

摘要

Inductive melting apparatus comprising a crucible surrounded by coils (6, 7, 8) has an alternating current supply comprising an inverter (22, 23, 24) for each coil and a control unit (28) providing two switching states: a first state for in-phase current supply and a second state for out-of-phase current supply.