Welding method and apparatus

Details Welding method and apparatus Welding method and apparatus

B - Operations, Transporting

23

K

327/70

B23K 9/09 (2006.01)

Patent

CA 1187562

A B S T R A C T A method of pulsed arc welding and an apparatus for carrying out the method, employ welding current pulses having an amplitude greater than the value of a background current. The arc voltage is sensed to provide a signal for controlling the frequency of the welding current pulses to counteract variations in electrode wire feed speed or spacing of the electrode from the workpiece.

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