Short circuiting transfer arc welding machine

Details Short circuiting transfer arc welding machine Short circuiting transfer arc welding machine

1983-10-27

1985-11-12

Shaw, Clifford C.

Electric heating

Metal heating

By arc

21913033, 219137PS, B23K 909

Patent

active

045530181

ABSTRACT:
A short circuiting arc welding machine increases an arc current density by adding a pulsed current having upper and lower limits to a current flowing when an arc is produced, thereby increasing the depth of bead penetration into a workpiece, removing welding defects, and speeding up the welding operation. The welding machine is capable of alternately changing the direction of flow of a welding current at desired periods to produce arcs in straight, reverse and mixed polarities for achieving intermediate characteristics of arcs of straight and reverse polarities, with a resultant ability to adjust in a wide range a wire melting rate and the amount of heat applied to the workpiece.

REFERENCES:
patent: 4000374 (1976-12-01), DeKeyser
patent: 4125759 (1978-11-01), Kiyohara et al.
patent: 4300036 (1981-11-01), Johansson

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