Power supply system for consumable electrode arc welding and met

Details Power supply system for consumable electrode arc welding and met Power supply system for consumable electrode arc welding and met

1988-05-11

1989-10-31

Shaw, Clifford C.

Electric heating

Metal heating

By arc

219137PS, B23K 910

Patent

active

048779415

ABSTRACT:
A power supply system for consumable electrode arc welding alternately switches between the reverse polarity and the straight polarity. The formation of an arc is detected. A polarity change control signal is generated when the arc duration reaches a predetermined time or when the quantity of charge reaches a predetermined value. The predetermined value of the welding current or voltage is reduced either immediately before or after the change in polarity.

REFERENCES:
patent: 3382345 (1968-05-01), Normando

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