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Arc Length
The arc length "a", that is the distance between the stick electrode and the work, should be:
with stick electrodes of coating type R, RR, A, C = 1.0xd,
with stick electrodes of coating type B = 0.5xd,
Too long an arc reduces the penetration, increases the arc blow effect and, particularly with basic coated stick
electrodes, causes a porous weld seam.
3.1.6Welding Positions According to DIN 1921
3.1.5Arc Starting and Arc Burning
Arc Strike
Always start the arc in the welding groove.
When the arc is stable weld over the arc strike and melt for good fusion, otherwise there is a risk of cracking.
d
a
wrong
correct
arc strike
arc strike
open-circuit voltage
Short-circuit voltage
3 to 5 V
working voltage
20 to 30 V
Arc starting
sequence
q
q = horizontal-vertical position
f
s
ü = overhead position
ü
w = gravity position
ww
h
h = horizontal position
s = vertical-up position
f = vertical-down position
18
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