
TRANSTIG 200 Pi
SERVICE MANUAL
5-6
March 31, 2008
5.05 Stick Welding Problems
1 Gas pockets or voids in weld metal
(Porosity)
A Electrodes are damp
A Dry electrodes before use
B Welding current is too high
B Reduce welding current
C Surface impurities such as
oil, grease, paint, etc
C Clean joint before welding
2 Crack occurring in weld metal soon
after solidification commences
A Rigidity of joint
A Redesign to relieve weld
joint of severe stresses or
use crack resistance
electrodes
B Insufficient throat thickness B Travel slightly slower to
alloy greater build-up in
throat
C Cooling rate is too high
C Preheat plate and cool
slowly
3 A gap is left by failure of the weld
metal to fill the root of the weld
A Welding current is too low
A Increase welding current
B Electrode too large for joint B Use smaller diameter
electrode
C Insufficient gap
C Allow wider gap
D Incorrect sequence
D Use correct build-up
sequence
Possible Cause
Description
Remedy
Table 5-2: STICK Welding Problems
I
nsu
fficie
n
t Gap
I
n
co
rr
ect
S
eq
u
e
n
ce
A
r
t # A-05866_AB
Figure 5-1: Example of Insufficient Gap or Incorrect Sequence