Possible Causes
Corrective Actions
Improper joint preparation
Material too thick. Joint preparation and
design must provide access to bottom of
groove while maintaining proper welding
wire extension and arc characteristic
Improper weld technique
Maintain normal gun angle of 0 to 15 degrees
to achieve maximum penetration
Keep arc on leading edge of weld puddle
Do not extend wire too far from nozzle
Insufficient heat input
Select higher wire feed speed and/or select
higher voltage range
Reduce travel speed
Shall fusion between weld metal and base metal.
Lack of Penetration
Good Penetration
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5. TROUBLESHOOTING
5.4 Lack of Penetration
