Centrifugal furnace for fusion and casting under vacuum, particularly of dental or goldsmith alloys

摘要

1,015,689. Centrifugal casting-machines. L. RIGATTI-LUCHINI. Aug. 3, 1962 [Aug. 5, 1961], No. 29929/62. Heading B3F. [Also in Division H5] In a centrifugal vacuum fusion and casting apparatus, a double-walled water cooled housing encloses a graphite crucible in a fusion chamber heated by an electrical resistance heater and communicating with a mould. The assembly is mounted on a rotatable disc driven through gearing by an electric motor. Before centrifuging commences connection is made to vacuum applying means and electrical supply means, the connections being retractable to permit the assembly to be rotated after melting is completed, the cooling of the furnace continuing during rotation.