tig gas

[stevo70]

is it possible to tig weld mild steel with argoshield light or does it have to be pure argon even for mild steel?

 

[malcolm]

Pure argon sadly - needs to be a completely inert gas to protect the tungston. (Obviously not the same trouble with MIG where the electrode constantly replaces itself).

 

[stevo70]

is it possible to tig weld mild steel with argoshield light or does it have to be pure argon even for mild steel? I have a bottle of argoshield for the mig and just aquired a tig welder to play with for a while so not really wanting to fork out for another bottle. Did use a disposable bottle a few years ago on a tig which i think lasted about 5 mins
cheers guys
Stevo

 

[stevo70]

cheers Malc thought that was the case. Looks like its a trip to the local gas supplier on monday to throw a bit more beer vouchers his way

 

[zardoz]

just a thought, but is it ok to MIG weld with pure argon TIG gas, save renting 2 bottles for both processes ?

 

[shenion]

I have used pure argon on MIG as my gas supplier gave me the wrong bottle.

Works fine if you don't mind laying welds that are taller than they are wide. Nice stable arc and narrow penetration.

 

[weldingscotty803]

too rich unfortunatley zardoz, u need carbon dioxide mixed with a bit of argon.
argon is fine for stainless and ally, not for mild though too high a weld.

 

[weldingscotty803]

it will do it but not as good as co2 ar mix, look at the above pics