Miller Electric DVI-2 R manual Gun Movement During Welding, Poor Weld Bead Characteristics

8-5. Gun Movement During Welding

.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.

1Stringer Bead − Steady Movement Along Seam

1	2	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.
	3

8-6. Poor Weld Bead Characteristics

1

2 3 4

S-0054-A

1 Large Spatter Deposits

2 Rough, Uneven Bead

3 Slight Crater During Welding

4 Bad Overlap

5 Poor Penetration

5

S-0053-A

8-7. 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-232 386 Page 36