Miller Bobcat 250 Owner's Manual page 66

12-7. Conditions That Affect Weld Bead Shape
Electrode Angle
2
1
1
1
5
Arc Length
5
9
5
9
Travel Speed
9
12-8. Electrode Movement During Welding
1
OM-249336 Page 62
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10 30
2
-
10 30
2
-
3
10 30
6
3
6
3
11
10
6
10
10
2
3
1
4
4
4
7
8
7
8
7
8
11
11
2
3 4
�
Weld bead shape is affected by elec-
trode angle, arc length, travel speed,
and thickness of base metal.
1 Angle Too Small
2 Correct Angle
3 Drag
4 Angle Too Large
5 Too Short
6 Normal
7 Too Long
8 Spatter
9 Slow
10 Normal
11 Fast
�
Normally, a single stringer bead is sat-
isfactory 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. Do not let weave
width exceed 2-1/2 times diameter of
electrode.
OM-