Induction melting system including gas exhaust

Details Induction melting system including gas exhaust Induction melting system including gas exhaust

1995-07-10

1998-05-26

Hoang, Tu B.

Industrial electric heating furnaces

Induction furnace device

With internal atmosphere control

75 1067, 75380, 373 7, F27D 704, F27D 706

Patent

active

057578435

ABSTRACT:
An annular exhaust gas passage 2 and an airtight retention member 3 for keeping the inside of a crucible induction furnace 1 airtight are installed on the top of the furnace 1, and an exhaust system under atmospheric pressure is connected to a valve 4 via an air duct that penetrates the airtight retention member 3. In addition, a sealing cover 7 that has a valve 8, which can be opened and closed, is used to keep the inside of the furnace airtight, while a system under reduced pressure is connected to the valve 8. These two systems constitute the entire exhaust system.

REFERENCES:
patent: 4227922 (1980-10-01), Laws et al.
patent: 5406579 (1995-04-01), Vallomy
patent: 5540752 (1996-07-01), Spoel

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