Electric heating – Metal heating – By arc
Patent
1989-07-03
1991-03-26
Shaw, Clifford C.
Electric heating
Metal heating
By arc
21913021, B23K 909
Patent
active
050031546
ABSTRACT:
Apparatus and method to reduce splatter and allow better semi-automatic welding in short circuiting arc welding of the type using a single D.C. power supply for causing a welding current to pass through a welding wire extending variable distances from a holder and between the welding wire and a workpiece at a molten pool on the workpiece. The welding current flows in response to an arc voltage while the welding wire is fed from the holder toward the workpiece whereby the welding wire is subjected to a succession of welding cycles each of which include an arcing condition during which the wire is spaced from the pool and a short circuit condition during which a molten metal ball formed on the end of the wire contacts the metal pool and then transfers from the wire to the workpieced by a necking action. A preselected, constant amount of energy is applied to the wire during the arcing condition for each welding cycle.
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Parks John M
Stava Elliott K.
Shaw Clifford C.
The Lincoln Electric Company
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