Can I mig weld with pure argon?

I have a small mig welder, currently set up for flux core wire, that I would like to be able to mig with. Rather than buying a bottle of CO2/Argon mix, I would like to use the argon bottle I already have for my Tig machine. How would this work for welding plain steel, up to 3/16 thick? Or should I just bite the bullet and get a small, portable bottle of the mix?Sorry if this has been asked 100 times before, Gary

Reply to
Loading thread data ...

Pure argon gives very poor penetration on Steel MIG.

Reply to
Ernie Leimkuhler

Just hook up the argon bottle, set flow to about 15- 20cfh..reverse the polarity of the leads and you are up and running.

I use pure CO2 for most mig welding on the old rough stuff I have kicking around..25/75 for fancy stuff and keep the argon for the tig, but Ive done argon mig. The welds tend to be shallower and more rounded..shrug


"Pax Americana is a philosophy. Hardly an empire. Making sure other people play nice and dont kill each other (and us) off in job lots is hardly empire building, particularly when you give them self determination under "play nice" rules.

Think of it as having your older brother knock the shit out of you for torturing the cat." Gunner

Reply to
Gunner Asch

Rod: Straight Argon will give you less penetration and under cutting. CO2 would be better for use with solid wire than Argon. However, I'd stay with the self shielding fluxcore if money is _the_ issue.

Reply to
Rod Ryker

PolyTech Forum website is not affiliated with any of the manufacturers or service providers discussed here. All logos and trade names are the property of their respective owners.