TRANSTIG 200 Pi
SERVICE MANUAL
5-8
March 31, 2008
5 Non-metallic particles are trapped
in the weld metal (slag inclusion)
A Non-metallic particles may
be trapped in undercut from
previous run
A If bad undercut is
present, clean slag out
and cover with a run from
a smaller diameter
electrode
B Joint preparation too
restricted
B Allow for adequate
penetration and room for
cleaning out the slag
C Irregular deposits allow slag
to be trapped
C If very bad, chip or grind
out irregularities
D Lack of penetration with
slag trapped beneath weld
bead
D Use smaller electrode with
sufficient current to give
adequate penetration. Use
suitable tools to remove
all slag from corners
E Rust or mill scale is
preventing full fusion
E Clean joint before welding
F Wrong electrode for position
in which welding is done
F Use electrodes designed
for position in which
welding is done,
otherwise proper control
of slag is difficult
Possible Cause
Description
Remedy
Table 5-2 (continued): STICK Welding Problems
Not clea
n
ed, o
r
i
n
co
rr
ect elect
r
ode
S
lag t
r
apped i
n
un
de
r
c
u
t
S
lag t
r
apped i
n
r
oot
A
r
t # A-05868
Figure 5-3: Examples of Slag Inclusion