Gun Movement During Welding; Poor Weld Bead Characteristics; Good Weld Bead Characteristics - Miller Millermatic 251 Owner's Manual

8-5. Gun Movement During Welding

NOTE
1

8-6. Poor Weld Bead Characteristics

8-7. Good Weld Bead Characteristics

OM-1326 Page 34
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.
2
3
2
4
3
2 4
3
1
5
1
5
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.
S-0054-A
1 Large Spatter Deposits
2 Rough, Uneven Bead
3 Slight Crater During Welding
4 Bad Overlap
5 Poor Penetration
S-0053-A
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
S-0052-B