Electric heating – Metal heating – By arc
Patent
1980-05-28
1981-12-08
Albritton, C. L.
Electric heating
Metal heating
By arc
219121, 219121EL, 219121LZ, B23K 1500
Patent
active
043049826
ABSTRACT:
Optical workpiece viewing systsms and associated apparatus for electron beam welders and other workpiece processing machines which generate metal vapors. The subject systems have replaceable shields which keep the optical components of the system from being coated by condensation of vapors generated during the welding operation, and the associated apparatus includes an arrangement for changing shields as they become clouded which reduces to a small fraction the time conventionally required for that purpose. Workpiece processing machines with optical viewing system and related apparatus of the character just described.
REFERENCES:
patent: 3156810 (1964-11-01), Samuelson
Albritton C. L.
Chem-Tronics, Incorporated
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