Pulse arc welding machine

Details Pulse arc welding machine Pulse arc welding machine

1981-07-08

1984-01-10

Shaw, C. C.

Electric heating

Metal heating

By arc

219137PS, B23K 909

Patent

active

044254938

ABSTRACT:
A pulse arc welding machine in which the repetition frequency of the pulse currect is unaffected by the frequency of the power source and the mean value of the pulse current applied can be accurately controlled over a broad range while the arcing is maintained stable. A pulse peak current supplying circuit is connected in series with an arcing region formed between a consumable wire electrode and a material to be welded between the output terminals of a standard direct current source while a base current supplying circuit is connected in parallel with the pulse peak current supplying circuit. The pulse peak current supplying circuit and the base current supplying circuit are both composed of a switching element such as a transistor coupled in series with an inductive element. Diodes are provided for suppressing high voltage transients in the circuit.

REFERENCES:
patent: 3902037 (1975-08-01), Goto et al.
patent: 4237370 (1980-12-01), Ullmann

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