Electron beam welding with beam focus controlled responsive to a

Details Electron beam welding with beam focus controlled responsive to a Electron beam welding with beam focus controlled responsive to a

1980-09-11

1982-11-02

Rubinson, Gene Z.

Electric heating

Metal heating

By arc

219121EA, 219121ED, B23K 1500

Patent

active

043575170

ABSTRACT:
In a process for electron beam welding, the electron beam welding gun is controlled to maintain the power absorbed by the pieces being welded substantially constant. In a preferred embodiment the intensity of the electron beam transmitted by the pieces being welded, which corresponds to the power absorbed, is measured, compared with a preset intensity and the difference used to control the focussing current supplied to the gun to maintain the intensity of the transmitted beam constant.

REFERENCES:
patent: 3291959 (1966-12-01), Schleich et al.
patent: 4021636 (1977-05-01), von Walter
patent: 4127762 (1978-11-01), Paton et al.
Welding Journal; Feb. 1976; Welding Research Supplement, pp. 525-545; "Electron Beam Welding Spike Suppression Using Feedback Control" by P. Tews et al.

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