H&S HSM250 - §6.3 DC TIG Welding - Trouble Shooting

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Too much tension on wire
spool hub
Reduce the spool hub brake tension
Wire crossed over on the spool
or tangled
Remove the spool untangle the wire
or replace the wire
Contaminated MIG wire
Use clean, dry, rust free wire. Do not
lubricate the wire.
§6.3 DC TIG Welding - Trouble Shooting
The following chart addresses some of the common problems of DC TIG welding. In all
cases of equipment malfunction, the manufacturer’s recommendations should be strictly
adhered to and followed.
NO.
Trouble
Possible Reason
Suggested Remedy
1
Tungsten burning
away quickly
Incorrect Gas or No Gas
Use pure Argon. Check cylinder
has gas, connected, turned on
and torch valve is open
Inadequate gas flow
Check the gas is connected,
check hoses, gas valve and torch
are not restricted.
Back cap not fitted
correctly
Make sure the torch back cap is
fitted so that the O-ring is inside
the torch body
Torch connected to DC +
Connect the torch to the DC-
output terminal
Incorrect tungsten being
used
Check and change the tungsten
type if necessary
Tungsten being oxidised
after weld is finished
Keep shielding gas flowing 10–15
seconds after arc stoppage. 1
second for each 10amps of weld
current.
2
Contaminated
tungsten
Touching tungsten into the
weld pool
Keep tungsten from contacting
weld puddle. Raise the torch so
that the tungsten is off the work
piece 2 - 5mm
Touching the filler wire to
the tungsten
Keep the filler wire from touching
the tungsten during welding, feed
the filler wire into the leading
edge of the weld pool in front of
the tungsten