Control of welding arc length

Details Control of welding arc length Control of welding arc length

1999-03-29

2000-12-05

Shaw, Clifford C.

Electric heating

Metal heating

By arc

21913051, 219137PS, B23K 909

Patent

active

061569984

ABSTRACT:
An arc length controlling method that is used in the practice of the pulsed welding in which welding is carried out by feeding an consumable electrode at a substantially constant speed while the pulse frequency f is set to a predetermined value. This method is carried out by effecting a welding after the counting time Tr and the target short-circuiting frequency Nr have been set, detecting the detected short-circuiting frequency Nk, and controlling the output voltage Vt to a value effective to allow the detected short-circuiting frequency Nk to be equal to the target short-circuiting frequency Nr.

REFERENCES:
patent: 3632960 (1972-01-01), Erdmann-Jesnitzer et al.
patent: 4647754 (1987-03-01), Hirasawa
patent: 4697062 (1987-09-01), Awano et al.
patent: 5221825 (1993-06-01), Siewert et al.
patent: 5270516 (1993-12-01), Hamamoto et al.
patent: 5756967 (1998-05-01), Quinn et al.

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