Process for controlling the welding current as a function of wel

Details Process for controlling the welding current as a function of wel Process for controlling the welding current as a function of wel

1994-05-19

1995-08-08

Shaw, Clifford C.

Electric heating

Metal heating

By arc

219 61, 21913051, B23K 9095

Patent

active

054400970

ABSTRACT:
A welding speed-dependent voltage (11) is added to a variable fixed voltage (13), to control the welding current as a function of welding speed in DC arc welding equipment, for the continuous welding of longitudinal seams of tube-shaped metal bands. In addition, the sum (15) of speed-dependent voltage (11) and variable fixed voltage (13) is superimposed by a pulsed DC voltage by a summing amplifier (28).

REFERENCES:
patent: 3261960 (1966-07-01), Lehnert
patent: 3286074 (1966-11-01), Lehnert et al.
patent: 3544760 (1970-12-01), Broodman
patent: 3619554 (1971-11-01), Klebl et al.
patent: 3626146 (1971-12-01), Smith et al.
patent: 5192850 (1993-03-01), Brunn et al.
Patent Abstracts of Japan, vol. 5, No. 050 (M-062) Apr. 9, 1981 & JP-A-56 004 377 (Daihen Corp.) Jan. 17, 1981.

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