Arc welding power apparatus having plural selectable electrode f

Details Arc welding power apparatus having plural selectable electrode f Arc welding power apparatus having plural selectable electrode f

1991-06-27

1992-12-01

Shaw, Clifford C.

Electric heating

Metal heating

By arc

B23K 912

Patent

active

051681447

ABSTRACT:
A power apparatus is used in an arc welding device to control a weld operation during a welding start time. An improved arc start performance is obtained in both a cooled condition of the welding wire tip end portion and a red heated condition thereof. A feed quantity of the consumption electrode during the weld start time is changed depending on whether the welding wire tip end portion is cooled or red heated from a prior arc welding operation.

REFERENCES:
patent: 3581051 (1971-05-01), Brown
patent: 3934110 (1976-01-01), Denis
patent: 4430551 (1984-02-01), Toth

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