Oven for thermo-magnetic treatment of toroidal coils of amorphou

Details Oven for thermo-magnetic treatment of toroidal coils of amorphou Oven for thermo-magnetic treatment of toroidal coils of amorphou

1988-03-22

1989-03-14

Leung, Philip H.

Electric heating

Metal heating

Of cylinders

219 1057, 219 10491, 219 1067, 148121, H05B 610

Patent

active

048126080

ABSTRACT:
An oven for thermo-magnetic treatment of toroidal coils of amorphous ferro-magnetic ribbon material whereby to improve the eddy current and hysteresis losses thereof for utilization of such coils in a distribution transformer construction. The oven comprises a housing formed as an annular chamber with thermo insulating material disposed at the interior of the chamber. A wire coil is wound about the annular chamber through the inner central passage thereof whereby to generate a magnetic field about the housing to orient the ferro-magnetic domains in the amorphous ribbon material being heat treated in the chamber. At least one toroidal coil is disposed within the chamber between a pair of heating plates to which controlled heat is applied. Preferably, the chamber is evacuated or an inert gas is provided therein.

REFERENCES:
patent: 4013742 (1977-03-01), Lang
patent: 4281234 (1981-07-01), Dohogne
patent: 4355221 (1982-10-01), Lin
patent: 4355222 (1982-10-01), Geithman et al.
patent: 4602140 (1986-07-01), Sobolewski

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