Jasic TIG Series - TIG Welding Issues and Corrections

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TIG WELDING PROBLEMS
Before starng any welding acvity ensure that you have suitable eye protecon and
protecve clothing. Also take the necessary steps to protect any persons within the welding
area.
TIG welding defects and prevenon methods
Defect Possible cause Acon
Excessive bead build up, poor
penetraon or poor fusion at the
edges of the weld
Weld current too low Increase the welding amperage
Poor material prep
Weld bead at and too wide or
undercut at the weld edge or burning
through
Weld current too high Decrease the welding amperage
Weld bead too small or insucient
penetraon
Welding travel speed too fast Reduce your welding travel speed
Weld bead too wide or excessive
bead build up
Welding travel speed too slow Increase your welding travel speed
Uneven leg length in llet joint Wrong placement of ller rod Re-posion ller rod
Tungsten melts or oxidises when
welding arc is made
TIG torch lead connected to +
Lile or no gas ow to weld pool
Gas cylinder or hoses contain
impuries
The tungsten is too small for the
weld current
TIG/MMA selector set to MMA
Connect to - polarity
Check gas apparatus as well as torch and
hoses for breaks or restricons
Change gas cylinder and blow out torch
and gas hoses
Increase the size of the tungsten
Ensure you have the power source set to
TIG funcon