Lincoln Electric K14138-1, Operator'S Manual

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English English 32
Frequency influences the width of the arc and the
amount of heat input to the weld. If the frequency is
higher:

Improves penetration and the microstructure of the
weld.

The arc is narrower, more stable.

Reduces the amount of heat input to the weld.

Reduces distortions.

Increases welding speed.
Note: Adjust range depend on the power source.
A
0.3 35.0
0.3
Figure 69
Background Current - value in percentage of nominal
value welding current. Adjusts the overall heat input into
the weld. Changing the background current changes
the shape of the back bead.
A
20 100
20%
Figure 70