Miller Bobcat 225 NT, Owner'S Manual

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47
OM-405
12.8 Conditions That Affect Weld Bead Shape
Weld bead shape is affected by electrode angle, arc length, travel speed, and thickness of
base metal.
Note
S-0061
ELECTRODE ANGLE
ARC LENGTH
TRAVEL SPEED
Slow
Normal Fast
10
°
-
30
°
Drag
Too Short
Normal Too Long
Spatter
Angle Too Small
Angle Too Large
Correct Angle
12.9 Electrode 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 work
better.
Note
S-0054-A 1 Stringer Bead – Steady Move-
ment 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.
1
2
3