05 welding problems, Welding problems -3 – Tweco FP-165 Mini MIG User Manual
FIREpOwER Fp-125, 135, 165
5.05 Welding Problems
A Welding arc voltage
A Reduce voltage by reducing the voltage se-
lection switch position or increase the wire
B Incorrect torch angle B Adjust angle
C Excessive heat input C Increase the torch travel speed and/or reduce
welding current by reducing the voltage selec-
tion switch position or reducing the wire feed
Lack of penetration.
A Welding current too
A Increase welding current by increasing wire
feed speed and increasing voltage selection
B Joint preparation too
narrow or gap too
B Increase joint angle or gap
C Shielding gas incor-
C Change to a gas which gives higher penetra-
3 Lack of fusion.
Voltage too low
Increase voltage by increasing voltage selec-
tion switch position.
A Voltage too high
A Lower voltage by reducing the voltage selec-
tion switch or increase wirespeed control.
B Voltage too low
B Raise voltage by increasing the voltage selec-
tion switch or reduce wirespeed control.
5 Irregular weld shape.
A Incorrect voltage and
current settings. Con-
vex = voltage too low.
Concave = voltage too
A Adjust voltage and current by adjusting the
voltage selection switch and the wirespeed
B Wire is wandering
B Replace contact tip
C Incorrect shielding
C Check shielding gas
D Insufficient or exces-
sive heat input
D Adjust the wirespeed control or the voltage
Table 5-1a: Welding Problems