Pulse Welding - Fronius TransPocket 150 Operating Instructions Manual

Pulse welding

Pulse welding is welding with a pulsing welding current. It is used for out-of-position
welding of steel pipes or when welding thin sheets.
In these applications the welding current set at the start of welding is not always ideal for
the whole welding process:
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Setting range: 0.2 - 990 Hz
Operating principle:
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NOTE!
The power source controls the Duty cycle dcY parameter and base current I-G
according to the set pulse current and pulse frequency.
Pulse welding - welding current curve
Adjustable parameters:
F-P =
SoftStart / HotStart
Fixed parameters:
I-G =
To use pulse welding:
1
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if the amperage is too low, the base material will not melt sufficiently
if overheating occurs, the liquid weld pool may drip.
A low base current I-G rises steeply to the significantly higher pulse current I-P and
drops back to the base current I-G after the Duty cycle dcY time. The pulse current I-
P can be set on the power source.
This results in an average current that is lower than the set pulse current I-P.
During pulse welding, small sections of the welding location melt quickly and then
rapidly re-solidify.
I
I-P
I-G
Pulse frequency (1/F-P = time
interval between two pulses)
Base current
Press the setting value button until
the pulse welding indicator lights up
1/F-P
dcY
I-P = Pulse current
dcY = Duty cycle
t