Hamre, Schumann, Mueller & Larson, P.C.
Pulse arc welding output control method and arc length variation pulse arc welding output control method
An output control method is provided for a pulse arc welding in which a welding current flows for one pulse period consisting of a peak period with a flow of a peak current and a base period with a flow of a base current. External characteristics of a welding power source are preliminarily set by a slope Ks, a welding current reference value Is and a welding voltage reference value Vs. The absolute value va of the welding voltage and the absolute value ia of the welding current during welding are detected. The integration Svb=∫(Ks×ia−Ks×Is+Vs−va) dt is calculated from a starting point of an n-th pulse period. The n-th pulse period is ended when the integration Svb becomes no smaller than zero during the base period. Then, the (n+1)-th pulse period is started.
Daihen Corporation
B
B23K
inventional
Hongjun
Tong