Electric heating – Metal heating – By arc
Patent
1975-01-24
1978-02-07
Bartis, A.
Electric heating
Metal heating
By arc
250396ML, 250492B, B23K 1500, H01J 37315, H01J 326
Patent
active
040723569
ABSTRACT:
An electron beam generator for use in electron beam welding wherein the electron beam passes through at least two electromagnetic beam deflecting systems upstream of the electron lens and which act one after another on the beam to define a fixed nonlinear path for the electron beam from the electron gun towards the welding point on a predetermined welding axis, with the other paths being blocked. The fixed path is such that the portion of the beam leaving the last deflecting system is parallel to the portion of the beam from the gun to the first deflection system, and at least one of the beam deflecting systems is offset with respect to the welding axis. In some arrangements the first and last beam portions are in alignment. The coils of the beam deflecting systems are connected in a circuit for controlling the ratio of currents passing through the coils so that the system as a whole is self-compensating for changes in voltage or beam current.
REFERENCES:
patent: 2802111 (1957-08-01), Reisner
patent: 2987610 (1961-06-01), Steigerwald
patent: 2989614 (1961-06-01), Steigerwald
patent: 3134013 (1964-05-01), Opitz et al.
patent: 3151231 (1964-09-01), Steigerwald
patent: 3187216 (1965-06-01), Sciaky
patent: 3491236 (1970-01-01), Newberry
"Debris Deflector and Collector" by Koste & Roberts, IBM Technical Disclosure, vol. 17, No. 3, Aug. 1974, pp. 860-861.
Bartis A.
The Welding Institute
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