ARC welding machine

Details ARC welding machine ARC welding machine

1997-01-22

1998-11-10

Shaw, Clifford C.

Electric heating

Metal heating

By arc

B23K 912

Patent

active

058347330

ABSTRACT:
An arc welding machine which is capable of feeding a welding wire stably at low and a high speeds. The arc welding machine includes a welding wire feed rate setting section; a welding wire feed motor; a welding wire feed motor driving section which supplies electric power required for driving said welding wire feed motor; and a welding wire feed control section which uses, as a control frequency, a frequency other than a frequency of an input power supply or a frequency twice as high or three times as high, or a wire feed control section which selects a low control frequency for feeding a welding wire at a low rate and a high frequency for feeding the welding wire at a high rate, or a welding wire feed control section which selects a high control frequency for feeding the welding wire at a low rate and a low frequency for feeding the welding wire at a high rate.

REFERENCES:
patent: 3617845 (1971-11-01), McKenna
patent: 4584458 (1986-04-01), Tremblay et al.
patent: 5526460 (1996-06-01), DeFrancesco et al.

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