Electric heating – Metal heating – By arc
Patent
1985-03-07
1986-12-09
Shaw, Clifford C.
Electric heating
Metal heating
By arc
21913051, 219137PS, B23K 909
Patent
active
046281819
ABSTRACT:
A method and apparatus for arc welding particularly regarding a pulse arc welding machine comprising a welding power source having an output characteristic control circuit, an overload protection circuit, a driving circuit, and a main power circuit, and a wire feeding unit having a wire feeding control circuit, a motor driving circuit and a wire feed motor. The output characteristic control circuit comprises a welding arc autoregulating control system which provides the power source with a multi-segmental and moving output characteristic with varying slope, a circuit for connecting arbitrary number of output characteristic segments with arbitrary or varying slope, and a scanning circuit for obtaining the output characteristic segment with varying slope. A particular use of the control system is in an easy to operate autoregulating controlled GMA welding machine with one-knob control of wire feed rate without having to adjust the other welding parameters.
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Ou Zhiming
Pan Jiluan
Wu Zhiqion
Zhang Renhao
Degling Donald E.
Isackson Robert M.
Plant David W.
Shaw Clifford C.
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