14/43
TIG
Instable arc
Default coming from the
tungsten electrode
Use a tungsten electrode with the
adequate size
Use a well prepared tungsten
electrode
Too important gas flow
rate
Reduce gas flow rate
The tungsten electrode gets oxidised and
tern at the end of welding.
Welding zone
Protect welding zone against air
flows
Default coming from
post-gas or the gas has
been stopped
prematurely.
Increase post-gas duration
Check and tighten all gas
connections. Wait until the
electrode cools down before
stopping the gas.
The electrode melts
Polarity error
Check that the earth clamp is really
connected to +
