Apparatus and method for engraving with an electron beam

Details Apparatus and method for engraving with an electron beam Apparatus and method for engraving with an electron beam

1981-03-05

1983-07-12

Albritton, C. L.

Electric heating

Metal heating

By arc

219121EK, 219121EA, 219121ES, B23K 1500

Patent

active

043932959

ABSTRACT:
Apparatus and method for engraving with an electron beam such that depressions of different sizes can be generated in the surface of a workpiece and the different sizes of depressions are produced by an electron beam and wherein during periods when depressions are not to be formed the electron beam remains on but is defocused so that it does not form depressions. A modification of the invention provides that at times when the beam is not being used to cut depressions that it is pulsed wherein the short pulses of the beam which engage the work surface do not do any cutting.

REFERENCES:
patent: 3246079 (1966-04-01), Teucher
patent: 3340601 (1967-09-01), Gariotti
patent: 3404254 (1968-10-01), Jones
patent: 4028523 (1977-06-01), Anderl et al.

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