V4.2
200A AC/DC Dial Control TIG Welder 202KE
8785081
Visit www.princessauto.com for more information
25
Problem(s)
Possible Cause(s)
Suggested Solution(s)
Lack of
penetration.
1. Insufficient heat input.
2. Poor welding technique.
3. Poor joint preparation.
1. Increase the amperage or choose a
larger electrode.
2. Use the correct welding technique
or seek assistance for the correct
technique.
3. Check the joint design and fit up,
make sure the material is not too
thick. Seek assistance for the
correct joint design and fit up.
Excessive
penetration - burn
through.
1. Excessive heat input.
2. Incorrect travel speed.
1. Reduce the amperage or use a
smaller electrode.
2. Try increasing the weld travel speed.
Uneven weld
appearance.
Unsteady hand, wavering
hand.
Use two hands where possible to steady
up, practice your technique.
Electrode welds
with different or
unusual arc
characteristic.
Incorrect polarity.
Change the polarity; check the electrode
manufacturer for correct polarity.
Distortion −
movement of base
metal during
welding.
1. Excessive heat input.
2. Poor welding technique.
3. Poor joint preparation
and or joint design.
1. Reduce the amperage or use a
smaller electrode.
2. Use the correct welding technique
or seek assistance for the correct
technique.
3. Check the joint design and fit up,
make sure the material is not too
thick. Seek assistance for the
correct joint design and fit up.
