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D
e
c s
i r
t p
o i
n
9. Poor weld finish.
10.Arc flutters during TIG welding.
11.Welding arc can not be established.
12.Arc start is not smooth.
300/ 400TS and 300/ 400S
P
o
s s
b i
e l
C
a
s u
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Inadequate shielding gas.
A. Tungsten electrode is too large
for the welding current.
B. Absence of oxides in the weld
pool.
A. Work clamp is not connected to
the work piece or the work/torch
leads are not connected to the
right welding terminals.
B. Torch lead is disconnecte.
C. Gas flow incorrectly set, cylinder
empty or the torch valve is off.
A. Tungsten electrode is too large
for the welding current.
B. The wrong electrode is being
used for the welding job.
C. Gas flow rate is too high.
D. Incorrect shielding gas is being
used.
E. Poor work clamp connection to
work piece.
F. Contaminated electrode.
G. Improper electrode preparation.
Tabl e 8-1:TI G W el di ng Pr obl em s
8 – 2
8
B A SI C TR O U B LESH O O TI N G
R
e
m
e
d
y
Increase gas flow or check gas line for
gas flow problems.
A. Select the right size electrode. Refer
to Basic TIG Welding guide.
B. Refer Basic TIG Welding Guide for
ways to reduce arc flutter.
A. Connect the work clamp to the work
piece or connect the work/torch
leads to the right welding terminals.
B. Connect it to the '–' terminal.
C. Select the right flow rate, change
cylinders or turn torch valve on.
A. Select the right size electrode. Refer
to Basic TIG Welding Guide.
B. Select the right electrode type.
Refer to Basic TIG Welding Guide.
C. Select the correct rate for the
welding job. Refer to Basic TIG
Welding Guide.
D. Select the right shielding gas.
Refer to Basic TIG Welding Guide.
E. Improve connection to work piece.
F. Re-prep tungsten.
G. Sharpen to a symetrical point.
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