Intermediate pressure electron beam furnace

Details Intermediate pressure electron beam furnace Intermediate pressure electron beam furnace

1991-11-14

1993-06-29

Seidel, Richard K.

Metal founding

Means to directly apply electrical or wave energy to work

In continuous casting apparatus

266149, 164469, B22D 2702, B22D 2715

Patent

active

052225470

ABSTRACT:
In the representative embodiment described in the specification, an electron beam furnace has an evacuation system which maintains the interior of the furnace at a pressure in the range from about 50 microns Hg to 300 microns Hg. The relatively high pressure reduces degassing time from a cold start, suppresses volatilization of constituents of metal being refined, and causes volatilized metal to condense in powder form on a condensing screen. A vibrator assists in removing the powder from the condensing screen. The electron beam gun has a series of compartments which are individually evacuated to maintain the pressure in the compartment containing the cathode at a level less than about 1 micron Hg.

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patent: 4027722 (1977-06-01), Hunt
patent: 4482376 (1984-11-01), Tarasescu et al.
patent: 4838340 (1989-06-01), Entrekin

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