Arc blowing control method and apparatus for pulse arc welding

Details Arc blowing control method and apparatus for pulse arc welding Arc blowing control method and apparatus for pulse arc welding

1983-11-04

1984-11-27

Shaw, C. C.

Electric heating

Metal heating

By arc

21913051, 219137PS, B23K 909

Patent

active

044852924

ABSTRACT:
An arc blowing control method and apparatus for use in a pulse arc welding system for preventing the extinction of the welding arc in the presence of current fluctuations or the like, thus preventing splattering of molten welding material and resulting in a smooth and continuous welding bead. A detection circuit is provided for electrically detecting the occurrence of a so-called stepped leader phenomenon during pulse arc welding and for generating a stepped leader signal accordingly. A switching unit is operated in response to the stepped leader signal for switching from a normal arc signal output to an arc blowing blocking signal output for a predetermined time. An arc blowing blocking circuit operates in response to the arc blowing blocking signal for effecting arc blowing suppression operations.

REFERENCES:
patent: 3626145 (1971-12-01), Jackson
patent: 4301355 (1981-11-01), Kimbrough et al.

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