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V4.2
Problem(s)
Lack of
penetration.
Excessive
penetration - burn
through.
Uneven weld
appearance.
Electrode welds
with different or
unusual arc
characteristic.
Distortion −
movement of base
metal during
welding.
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200A AC/DC Dial Control TIG Welder 202KE
Possible Cause(s)
1. Insufficient heat input.
2. Poor welding technique.
3. Poor joint preparation.
1. Excessive heat input.
2. Incorrect travel speed.
Unsteady hand, wavering
hand.
Incorrect polarity.
1. Excessive heat input.
2. Poor welding technique.
3. Poor joint preparation
and or joint design.
Suggested Solution(s)
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.
1. Reduce the amperage or use a
smaller electrode.
2. Try increasing the weld travel speed.
Use two hands where possible to steady
up, practice your technique.
Change the polarity; check the electrode
manufacturer for correct polarity.
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.
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