Electric heating – Metal heating – By arc
Patent
1982-03-25
1984-11-20
Albritton, C. L.
Electric heating
Metal heating
By arc
219121EK, 219121ET, B23K 1500
Patent
active
044840586
ABSTRACT:
When drilling very small diameter holes in workpieces, there is a great tendency for expulsed workpiece material to travel back along the electron beam path, and to deposit as debris within the interior of the gun. The debris is caused to mostly land at a recess in the rim of a rotatable interior shield, positioned adjacent the beam path inside the gun. The deflection angle of the electron beam is precisely adjusted so that the expulsed workpiece material lands in the recess, from when it is removed by a scraper. A tab is placed within the recess at the rim of the shield, and helps remove small amounts of deposit which still adhere to stationary parts of the electron beam gun system adjacent to the shield. In this embodiment, a resilient scraper such as a wire brush, is used to remove adhering debris from the rim of the shield.
REFERENCES:
patent: 3175073 (1965-03-01), Niedzielski et al.
patent: 3393289 (1968-07-01), Duhamel et al.
patent: 3491226 (1970-01-01), Beadle
patent: 4271348 (1981-06-01), Nakazaki et al.
"1975 Manual-Pratt U. Whitney K6-G10P A-D", Stiegerwald Strahltechnik, Puchheim, Frg, (1975), 15 selected pp. AS 1-AS 15.
Howard Curtiss G.
Jordan Lester W.
Yaworsky Chester E.
Zampino Frank L.
Albritton C. L.
Nessler C. G.
United Technologies Corporation
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