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OM-4415 Page 46
13-8. Conditions That Affect Weld Bead Shape
. Weld bead shape is affected by electrode angle, arc length, travel speed, and thickness of base metal.
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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
13-9. 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.
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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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