The nozzle is damaged or
cracked
Replace with a new nozzle
The gas circuit in the welding
torch is blocked
Blow the circuit with compressed air
to clear the blockage
The gas screen has been
damaged or lost during
disassembly and assembly
Replace with a new gas screen
Replace with standard argon gas
The gas flow is too large or small
Adjust the gas flow properly
Arcing and
burning of metal
nozzle
The insulation gasket burns out
and losses its insulation function
Replace the insulation gasket
The insulation gasket is broken
down by high frequency
Replace the insulation gasket
Arc started
between the
collet and
tungsten
electrode or
welding torch
The collet and tungsten electrode
have poor contact, or arc is
started when the tungsten
electrode contacts the base metal
Replace the collet or repair
The collet and welding torch have
poor contact
Connect the collet and welding torch
properly
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