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OM-498 Page 43
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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
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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
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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.
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2
3