Method and apparatus for energy beam welding

Details Method and apparatus for energy beam welding Method and apparatus for energy beam welding

1978-05-09

1979-07-03

Truhe, J. V.

Electric heating

Metal heating

By arc

B23K 900

Patent

active

041601505

ABSTRACT:
In welding a workpiece of considerable thickness with an energy beam, as an electron beam, focussed into a focal point on a beam axis, the tendency of molten material flowing out of the welding zone is eliminated or at least considerably reduced by continuously, preferably periodically, changing the focussing condition of the electron beam to shift the focus reciprocatingly along the beam axis. Preferably, the frequency of the shift of the focus along the beam axis is between 5 and 30 cycles per second, and the amplitude of the shift of the focus is at least one third of the thickness of the workpiece.

REFERENCES:
patent: 3230339 (1966-01-01), Opitz et al.
patent: 3518400 (1970-06-01), Gallivan
patent: 3743776 (1973-07-01), Corcelle

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