Lap Joints; Tee Joints; Welding Troubleshooting - Miller Electric 225 Owner's Manual

8-9. Lap Joints

2
Single-Layer Fillet Weld

8-10. Tee Joints

Or Less
2
B. Welding Troubleshooting
Possible Causes
Arc length too long.
Damp electrode.
Workpiece dirty.
30 Or Less
1
3
Multi-Layer Fillet Weld
1
45
2
Table 6-1. Porosity
Reduce arc length.
Use dry electrode.
Remove all grease, oil, moisture, rust, paint, coatings, slag, and dirt from work surface before
welding.
1 Electrode
2 Single-Layer Fillet Weld
30 Or Less
Move electrode in circular motion.
3 Multi-Layer Fillet Weld
Weld a second layer when a larger
1
fillet is needed. Remove slag before
making another weld pass. Weld
both sides of joint for maximum
strength.
1 Electrode
2 Fillet Weld
1
Keep arc short and move at definite
rate of speed. Hold electrode as
shown to provide fusion into the
corner. Square edge of the weld
surface.
For maximum strength weld both
sides of upright section.
3 Multi-Layer Deposits
3
Weld a second layer or more when
a larger fillet is needed. Use any of
the weaving patterns shown in Sec-
tion 8-7. Remove slag before mak-
ing another weld pass.
Porosity − small cavities or holes resulting
from gas pockets in weld metal.
Corrective Actions
S-0063 / S-0064
S-0069 / S-0058-A / S-0061
OM-316 Page 35