Method of controlling a magnetically guided welding arc

Details Method of controlling a magnetically guided welding arc Method of controlling a magnetically guided welding arc

1979-09-11

1982-03-09

Shaw, C. C.

Electric heating

Metal heating

By arc

219 60R, 219100, B23K 908

Patent

active

043191231

ABSTRACT:
A pair of workpieces are welded together by passing between them an arc which is guided by a magnetic field to rotate on the workpieces. Immediately after striking of the arc the field strength of the magnetic field is relatively great and a relatively great current is similarly passed through the arc. During a subsequent main phase, before fusing of the surfaces to be welded, the field strength and the current of the arc are reduced to a fraction of their values for even heating of the surfaces to be welded together. Finally during a terminal phase the current of the arc and the field strength are again raised to a higher level to completely fuse the two surfaces which can then be welded together once the arc is interrupted.

REFERENCES:
patent: 3341685 (1967-09-01), Paton et al.
patent: 3484578 (1969-12-01), Sciaky

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