Hey guys, I'll be using a Lincoln Electric "power mig 255" next week for the first time. This will be my first time using gas with mig, as my only experience is with cheapo flux cored migs and some oxy-acetylene torch stick welding, so ANY tips and tricks would be GREATLY appreciated.

My main concern is what pressure should the Argon be regulated to?

Thanks

 

what type of material are you welding? Aluminum I'm guessing if it's straight argon.

 

I don't know, really. It'll probably be on some mild practice steel plates or tubing. Just screwing around with it, thats all.

Oh, btw. Theres a guy here in town selling a Lincoln Electric SP-135 T with a 10lb bottle and a few other things for $300.
Is this a pretty good welder? he says its perfect condition. I'll go take a look at it this week...

 

if you're doing mild steel make sure you use argon/co2 mix. 100% argon is usually only used for aluminum mostly. If you're just doing regular short-circuit welding I would set the regulator to about 25-30cfh. It differs with technique and type of welding positions.

 

with mig you only really need 8-10 cfh. its not like tig welding where you use 20+.

 

I think I must have been thinking about spray transfer. When I do short-circuit I do run lower like 15cfh. It changes a lot for me because I do a lot of vertical up and overhead. I just started not to long ago so I'm not 100% accurate so anyone feel free to correct me if I say something wrong.

 

<TABLE WIDTH="90%" CELLSPACING=0 CELLPADDING=0 ALIGN=CENTER><TR><TD>Quote, originally posted by CoreyR &raquo;</TD></TR><TR><TD CLASS="quote">with mig you only really need 8-10 cfh. its not like tig welding where you use 20+.</TD></TR></TABLE>

Good to know.
Thanks G