Pulsed arc welding method and apparatus

Details Pulsed arc welding method and apparatus Pulsed arc welding method and apparatus

1996-11-14

1998-10-20

Shaw, Clifford C.

Electric heating

Metal heating

By arc

21913021, B23K 909

Patent

active

058249915

ABSTRACT:
A pulsed arc welding apparatus includes a short circuit detecting circuit for detecting a time during which a short circuit is being produced by melting a consumable electrode across a consumable electrode and a base metal, a comparison circuit for comparing an integrated value or a mean value of short circuit generating time detected by the short circuit detecting circuit with an optional set value, and a control circuit for controlling either one of the supply time of the pulse current and the base current supply time in accordance with the result of comparison by this comparison circuit, thereby to control the arc length.

REFERENCES:
patent: 4485293 (1984-11-01), Tabata et al.
patent: 4518844 (1985-05-01), Needham
patent: 4647754 (1987-03-01), Hirasawa
patent: 4697062 (1987-09-01), Awano et al.
patent: 4717807 (1988-01-01), Parks et al.
patent: 4889969 (1989-12-01), Kawai et al.
patent: 5406052 (1995-04-01), Mizuno et al.

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