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8. Weld condition
8 1 .
‐
In case of improper welding conditions
8 2 .
‐
Clearance between base metal and tip
8 3 .
‐
Relation between weld current and voltage
Reason
Remedy
Arc length is growing.
Particle of spatter becomes bigger.
Bead width is widening.
The length and height of weld penetration become smaller.
Arc voltage is too high.
Wire sticks to the base metal and too many spatters. Bead width
becomes narrow.
The depth and height of weld penetration becomes bigger.
Arc voltage is too low.
Particle of spatter becomes smaller.
Bead width is widening.
The depth of weld penetration becomes bigger.
Welding current is too high.
Bead width becomes narrow.
The length and height of weld penetration become smaller.
Welding speed is fast.
Particle of spatter becomes smaller the number of spatter
decreases.
The depth and height of weld penetration becomes bigger.
Current density of wire is
high.
Wire diameter (mm)
Clearance (mm)
0.9 1.0
‐
10 15
‐
1.2
15 20
‐
1.6
25 30
‐
Summary of Contents for 350C
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