Consumable electrode type pulse arc welding machine

Details Consumable electrode type pulse arc welding machine Consumable electrode type pulse arc welding machine

1985-07-22

1987-03-03

Shaw, Clifford C.

Electric heating

Metal heating

By arc

21913001, 21913051, 219137PS, B23K 909

Patent

active

046477543

ABSTRACT:
A consumable electrode type pulse arc welding machine is provided with means for controlling a welding output of the welding machine and the control means comprises a short-circuiting detector circuit for detecting the number of times of short-circuiting n occurring between an electrode wire and a weld part of a base metal at predetermined time intervals during a welding operation, a processing unit for calculating n.sub.d =n.sub.s -n, where n.sub.s is a preset number of short-circuiting times, and a control means for controlling a welding output of the welding machine by decreasing the welding arc voltage in accordance with the magnitude of n.sub.d, when n.sub.d is larger than zero, and by increasing the welding arc voltage in accordance with the magnitude of .vertline.n.sub.d .vertline., when n.sub.d is smaller than zero.

REFERENCES:
patent: 3632960 (1972-01-01), Erdmann-Jesnitzer et al.
patent: 3673377 (1972-06-01), Erdmann-Jesnitzer et al.
patent: 4518844 (1985-05-01), Needham

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