Miller Electric Bobcat 250 manual Conditions That Affect Weld Bead Shape

14-8. Conditions That Affect Weld Bead Shape

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

	Correct Angle
Angle Too Small	10° - 30°	Angle Too Large
	Drag
	ELECTRODE ANGLE
		Spatter
Too Short	Normal	Too Long
	ARC LENGTH
Slow	Normal	Fast
	TRAVEL SPEED	S-0061

14-9. 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.

1Stringer Bead − Steady Movement Along Seam

1	2	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.

3

S-0054-A

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