Kemppi Adaptive 150 - Manual (Page 14)

MinarcMig™ Adaptive 150
© Kemppi Oy 0550 13
EN
3.5.1. Welding power adjustment
Adjusting the welding power according to sheet thickness affects simultaneously
both wire feed speed and amount of current lead to the wire. This is a good
starting point for welding in different operating situations. However, connection
type and root opening may influence the amount of welding power needed.
Select the correct parameter with the welding power control according to the
welded fillet weld’s sheet thickness. If the fillet weld’s sheets are of different
thickness, use their average as a default parameter.
Sheet thickness scale has been given in millimetres and it is based on 0.8 mm
wire diameter. When using a 0.6 mm wire, set the welding power control slightly
higher than the used sheet thickness and correspondingly slightly lower with
0.9-1.0 mm wires.
NOTE! When welding for the first time, we recommend that you set the arc
length trimmer to the middle position.
3.5.2. Arc length trimmer
The arc length trimmer adjusts the length of the arc shorter or longer and affects
the welding temperature. A shorter arc is colder and a longer one hotter. The
arc length trimmer also affects the arc’s welding properties and spatters with
different combinations of filler wire diameters and shielding gases.
If the weld is too convex, the arc is too short or cold. Then adjust the arc longer
or hotter by turning the control clockwise.
If, on the other hand, you want to weld with a colder arc to prevent for example
the parent material from burning through, adjust the arc shorter by turning the
control counter clockwise. You can also adjust the welding power, if need be.
Once the arc has been trimmed, it usually does not need to be changed when
the welded sheet thickness changes.