Troubleshooting Welds - Lincoln Electric PRO 155 Operator's Manual

B-16

TROUBLESHOOTING WELDS

Good welds have excellent appearance.
To Eliminate Porosity (in order of importance):
1. Turn on gas supply, if used
2. Decrease voltage.
3. Increase stickout.
4. Increase WFS (wire feed speed).
5. Decrease drag angle.
6. Decrease travel speed.
NOTE: Always be sure the joint is free from moisture,
oil, rust, paint or other contaminants.
To Eliminate a Ropy Convex Bead
(in order of importance):
1. Increase voltage.
2. Decrease stickout.
3. Decrease WFS (wire feed speed.
4. Decrease travel speed.
5. Decrease drag angle.
6. Check for correct gas, if used.
LEARNING TO WELD
To Reduce Spatter (in order of importance):
1. Increase voltage.
2. Increase drag angle.
3. Decrease stickout.
4. Increase WFS (wire feed speed).
5. Decrease travel speed.
6. Check for correct gas, if used.
To Correct Poor Penetration (in order of impor-
tance):
1. Decrease stickout.
2. Increase WFS (wire feed speed).
3. Decrease voltage.
4. Increase speed.
5. Decrease drag angle.
6. Check for correct gas, if used.
If Arc Blow Occurs (in order of importance):
NOTE: Try different ground connection locations
before adjusting procedures.
1. Decrease drag angle.
2. Increase stickout.
3. Decrease voltage.
4. Decrease WFS (wire feed speed.
5. Decrease travel speed.
To Eliminate Stubbing* (in order of importance):
1. Increase voltage
2. Decrease WFS (wire feed speed)
3. Decrease stickout
4. Increase drag angle
* Stubbing occurs when the electrode drives through
the molten puddle and hits the bottom plate tending
to push the gun up.
PRO 155
B-16