Miller Electric M-15 manual Gun Movement During Welding, Poor Weld Bead Characteristics

6-5. Gun Movement During Welding

NOTE

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 2

3

1Stringer Bead – Steady Movement Along Seam

2Weave Bead – Side To Side Movement Along Seam

3Weave Patterns

Use weave patterns to cover a wide area in one pass of the electrode.

S-0054-A

6-6. Poor Weld Bead Characteristics

1

2 3 4

1 Large Spatter Deposits

2 Rough, Uneven Bead

3 Slight Crater During Welding

4 Bad Overlap

5 Poor Penetration

5

S-0053-A

6-7. Good Weld Bead Characteristics

1

2 3 4

1Fine Spatter

2Uniform Bead

3Moderate Crater During Welding

Weld a new bead or layer for each 1/8 in (3.2 mm) thickness in metals being welded.

4No Overlap

5Good Penetration into Base Metal

5

S-0052-B

OM-1314 Page 28