Pulse arc discharge welding apparatus

Details Pulse arc discharge welding apparatus Pulse arc discharge welding apparatus

1989-05-18

1991-02-19

Shaw, Clifford C.

Electric heating

Metal heating

By arc

219137PS, B23K 909

Patent

active

049946463

ABSTRACT:
A pulse arc discharge welding apparatus comprising a pulse current waveform control circuit for periodically outputting a pulse current group consisting of a plurality of pulses, pulse arc current supplying means for outputting a pulse arc current according to an output of said pulse current waveform control circuit and an arc welding means for performing pulse arc discharge with an output of said pulse arc current supplying means, to carry out a pulse arc welding operation. In such a pulse arc discharge welding apparatus, with a discharge current waveform provided in the form of high frequency pulses, the discharge light and the gas in pulse discharge and the electrode are regulated and controlled with high accuracy.

REFERENCES:
patent: 3894210 (1975-07-01), Smith et al.
patent: 4273988 (1981-06-01), Iceland et al.
patent: 4427874 (1984-01-01), Tabata et al.
patent: 4438317 (1984-03-01), Ueguri et al.
patent: 4594498 (1986-06-01), Ueguri et al.
Welding Journal, Aug. 1985, "Study of Metal Transfer in Pulsed GMA Welding" by S. Ueguri, et al, pp. 242s-250s.
European Search Report.

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