Electric heating – Metal heating – By arc
Patent
1998-08-03
2000-01-18
Shaw, Clifford C.
Electric heating
Metal heating
By arc
2191305, 219137PS, B23K 909
Patent
active
060159642
ABSTRACT:
In an electric arc welder for creating an electric arc for melting and depositing metal from an advancing welding wire onto a workpiece, said welder including a power supply having a switch operated by a pulse width modulator for creating a series of current pulses having a fixed frequency and a conduction width determined by the command voltage of a control signal driving said pulse width modulator and an error amplifier for generating the command signal in accordance with a set point voltage, the improvement comprising: first set point means for creating a fixed set point voltage, second set point means for creating a ramp set point voltage increasing at a selected rate from a starting voltage to create a selected slope, a toggle means having a first toggled condition for connecting said first set point means to the error amplifier and a second toggled condition for connecting said second set point means to the error amplifier, means for creating a short signal when the wire shorts against the workpiece and means for toggling the toggle means from said first condition into said second condition in response to a short circuit signal.
REFERENCES:
patent: 4469933 (1984-09-01), Mizuno et al.
patent: 4889969 (1989-12-01), Kawai et al.
patent: 5148001 (1992-09-01), Stava
patent: 5637246 (1997-06-01), Ikegami
patent: 5726419 (1998-03-01), Tabata et al.
Lincoln Global Inc.
Shaw Clifford C.
LandOfFree
Electric arc welder with controlled arc does not yet have a rating. At this time, there are no reviews or comments for this patent.
If you have personal experience with Electric arc welder with controlled arc, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Electric arc welder with controlled arc will most certainly appreciate the feedback.
Profile ID: LFUS-PAI-O-564751