High power electron gun

Details High power electron gun High power electron gun

1986-04-14

1987-05-12

Albritton, C. L.

Electric heating

Metal heating

By arc

B23K 1500

Patent

active

046652973

ABSTRACT:
A high beam power electron gun of the axial type, particularly useful in large-scale vacuum metallurgy plants for melting, vaporizing and heat treating. The electron gun is controllable over its entire power range, i.e., from 10% to 100% of its nominal power, while the focal length of its beam guidance lens is maintained unchanged. This lens is downstream of a cathode, a focusing electrode and a movable anode, and is provided on its upstream side with a pole shoe to which the anode is fastened and which, together with the anode, is movable as a single unit in the axial direction for controlling the power.

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