ESAB Aristo U8 - Page 29

n m/min
-- 2 9 --
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Difference in wire feed speed
Cycle time (s)
The graphs for 15 m/min and 20 m/min respectively refer to the primary wire feed
speed. The cycle time is the sum o f the prim ary and secondar y phase weld time.
The difference between primary and secondary wire feed speed must not exceed the
speed that is indicated by the graphs of the primary wire feed speed.
Example: If the cycle time is 0.25 and the primary wire feed speed is 15 m/min the
difference between primary and secondary wire feed speed must not exceed
6m/min.
Welding example A
In this exemple we will weld a 10 mm p late with 1.2 mm aluminium wire and argon
shielding gas .
Make the following settings with the controller:
Process MIG SUPERPULSE MIG SUPERPULSE
Phase Primary Secondary
Method Dip/spray Pulse
Wire type Al Mg Al Mg
Shielding gas Ar Ar
Wire dimension 1.2 mm 1.2 mm
Voltage (+ 1.0V) (+ 3.0V)
Wire feed speed 15.0 m/min 11.0 m/ min
Phase weld time 0.1 s 0.1 s
The primary and secondary phase time is 0.1 s + 0.1 s = 0.2 s.
The difference in wire feed speed is 15.0 m/min -- 11.0 m/min = 4 m/min.
GB