How to weld > Welding defects and discontinuities
Undercut
Read about possible causes and suitable actions to avoid them
Cause
- Too high travel speed
- Incorrect oscillation technique
- Incorrect torch angle
- Too high voltage
- Too high heat input
Remedial actions
- Decrease the travel speed
- Use small stops at the end of oscillation
- Neutral or a small forehand angle is beneficial
- Decrease the voltage
Reduce the heat input
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