Welding arc initiator

Details Welding arc initiator Welding arc initiator

B - Operations, Transporting

23

K

327/50

B23K 9/06 (2006.01) B23K 9/067 (2006.01)

Patent

CA 1279105

WELDING ARC INITIATOR Abstract An improved inert gas shielded tungsten arc welder is disclosed of the type wherein a tungsten electrode is shielded within a flowing inert gas, and, an arc, fol- lowing ignition, burns between the energized tungsten electrode and a workpiece. The improvement comprises in combination with the tungsten electrode, a starting laser focused upon the tungsten electrode which to ignite the electrode heats a spot on the energized electrode suf- ficient for formation of a thermionic arc. Interference problems associated with high frequency starters are thus overcome by making such starters obsolete.

535636

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