Hot-wire TIG welding apparatus

Details Hot-wire TIG welding apparatus Hot-wire TIG welding apparatus

1985-07-02

1986-12-09

Shaw, Clifford C.

Electric heating

Metal heating

By arc

21913033, 219137PS, B23K 909

Patent

active

046281827

ABSTRACT:
A hot wire TIG welding apparatus has a current detector for detecting the peak period and base period of the arc current. The welding apparatus further has a controller which controls, in response to the detection signal from the current detector, the operation of the wire heating power supply such that the wire heating power is supplied only during the base period of the arc current. According to this arrangement, a hot wire switching TIG welding apparatus can be produced using commercially available power supply systems for TIG arc welders, without requiring substantial change or modification of the control circuits in the TIG arc welders.

REFERENCES:
patent: 3627974 (1971-12-01), Normando et al.
patent: 4366362 (1982-12-01), Ohta et al.
patent: 4396823 (1983-08-01), Nihei et al.
Y. Kozono et al, "Studies on Twin Electrode Switching Arc Welding Method", 5/1983.

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