Miller Blue Star 185 Manuel Du Propriétaire page 50

13-7. Conditions That Affect Weld Bead Shape
Angle Too Small
Electrode Angle
Arc Length
Too Short
Travel Speed
Slow
13-8. Electrode Movement During Welding
1
13-9. Welding Lap Joints
2
Correct Angle
° - °
10 30
Drag
Normal
Normal
2
3
°
30
Or Less
1
3
.
Angle Too Large
Spatter
Too Long
Fast
.
1
2
3
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.
1
2
Move electrode in circular motion.
3
°
30
Weld a second layer when a heavi-
Or Less
er fillet is needed. Remove slag be-
fore making another weld pass.
1
Weld both sides of joint for maxi-
mum strength.
Weld bead shape is affected
by electrode angle, arc
length, travel speed, and thick-
ness of base metal.
S-0061
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.
Stringer Bead − Steady
Movement Along Seam
Weave Bead − Side to Side
Movement Along Seam
Weave Patterns
S-0054-A
Electrode
Single-Layer Fillet Weld
Multi-Layer Fillet Weld
S-0063 / S-0064
OM-267 212 Page 45
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