Conditions That Affect Weld Bead Shape; Electrode Movement During Welding - Miller Maxstar 140 Owner's Manual

6-8.

Conditions That Affect Weld Bead Shape

NOTE
6-9.

Electrode Movement During Welding

NOTE
1
Weld bead shape is affected by electrode angle, arc length, travel speed, and
thickness of base metal.
Correct Angle
10
Angle Too Small
Drag
ELECTRODE ANGLE
Too Short
ARC LENGTH
Slow
TRAVEL SPEED
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.
3
° - °
Angle Too Large
30
Normal Too Long
Normal Fast
2
Spatter
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 elec-
trode. Do not let weave width ex-
ceed 2-1/2 times diameter of
electrode.
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