42
Description
Possible
Cause Remedy
9 Poor weld finish.
Inadequate shielding gas.
Increase gas flow or check gas line
for gas flow problems.
10 Arc flutters during TIG
welding.
A Tungsten electrode is too
large for the welding current.
A Select the right size electrode. Refer
to Basic TIG
Welding guide.
B
Absence of oxides in the
weld pool.
B Refer Basic TIG Welding Guide for
ways to reduce arc flutter.
11 Welding arc cannot be
established.
A Work clamp is not connected to the
work piece or the work/torch leads
are not connected to the right
welding terminals.
A Connect the work clamp to the work
piece or connect the work/torch
leads to the right welding terminals.
B Torch lead is disconnected.
B Connect it to the ‘
−
‘ terminal.
C
Gas flow incorrectly set, cylinder
empty or the torch valve is OFF.
C Select the right flow rate, change
cylinders or turn torch valve ON.
12 Arc start is not smooth. A Tungsten electrode is too large for
the welding current.
A Select the right size electrode. Refer
to Basic TIG Welding Guide.
B
The wrong electrode is being used
for the welding job.
B Select the right electrode type.
Refer to Basic TIG Welding Guide.
C Gas flow rate is too high.
C Select the correct rate for the
welding job.
Refer to Basic TIG Welding Guide.
D
Incorrect shielding gas is
being used.
D Select the right shielding gas. Refer
to Basic TIG Welding Guide.
E
Poor work clamp connection
to work piece.
E Improve connection to work piece.
