Miller Bobcat 250 Diesel Owner's Manual page 70

13-4. Gun Movement During Welding
2
13-5. Poor Weld Bead Characteristics
13-6. Good Weld Bead Characteristics
OM-258413 Page 66
1
3
2
3 4
1
2 4
3
.
Normally, a single stringer
bead is satisfactory for most
narrow groove weld joints;
however, for wide groove weld
joints or bridging across gaps,
a weave bead or multiple
stringer beads works better.
1 Stringer Bead − Steady
Movement Along Seam
2 Weave Bead − Side To Side
Movement Along Seam
3 Weave Patterns
Use weave patterns to cover a wide
area in one pass of the electrode.
1 Large Spatter Deposits
2 Rough, Uneven Bead
3 Slight Crater During Welding
4 Bad Overlap
1
5 Poor Penetration
5
1 Fine Spatter
2 Uniform Bead
3 Moderate Crater During
Welding
Weld a new bead or layer for each
1/8 in. (3.2 mm) thickness in metals
being welded.
4 No Overlap
5 Good Penetration into Base
Metal
5
S-0054-A
S-0053-A