14-7. Conditions That Affect Weld Bead Shape

. Weld bead shape is affected by electrode angle, arc length, travel speed, and thick- ness of base metal.

 

Correct Angle

 

Angle Too Small

10° - 30°

Angle Too Large

Electrode Angle

Drag

Spatter

Arc Length

 

 

Too Short

Normal

Too Long

Travel Speed

 

 

Slow

Normal

Fast

S-0061

14-8. 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

1

 

2

stringer beads work better.

 

 

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-

 

3

 

ceed 2-1/2 times diameter

of

 

 

electrode.

 

 

 

 

 

S-0054-A

OM-240 438 Page 60

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Hobart Welding Products OM-240 438B manual Conditions That Affect Weld Bead Shape, Electrode Movement During Welding