Electric heating – Metal heating – By arc
Patent
1993-10-28
1996-01-09
Evans, Geoffrey S.
Electric heating
Metal heating
By arc
21912126, 250397, 324 713, B23K 1500, G01T 129
Patent
active
054830362
ABSTRACT:
An electron beam focusing system, including a plural slit-type Faraday beam trap, for measuring the diameter of an electron beam and automatically focusing the beam for welding. Beam size is determined from profiles of the current measured as the beam is swept over at least two narrow slits of the beam trap. An automated procedure changes the focus coil current until the focal point location is just below a workpiece surface. A parabolic equation is fitted to the calculated beam sizes from which optimal focus coil current and optimal beam diameter are determined.
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Campiotti Richard
Giedt Warren H.
Cone Gregory A.
Evans Geoffrey S.
Sandia Corporation
Stanley Timothy D.
Windell Bruce M.
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