Welding Tips and Tricks

I've seen a setup by lincoln using an LN25 wire feeder connected to an AC tig to provide an AC Mig, I have the gear to do the same but would like to know any reason why this may not be a good idea as its very, very rare, basically unspoken of online. Would it not provide the ultimate mig welding setup for aluminium?

I don't know if would work good or not.
But I have been told to make sure the high frequency is turned off. It can fry your feeder.

Curious why someone would want this, standard DC spray transfer works fine in my opinion?

Something like this?

http://www.lincolnelectric.com/assets/U ... e12010.pdf

Did I read that right on page 3 under applications there's a note about doing it on 2mm thickness? That would make it primarily for thin work. But possibly a great advantage for doing stuff like boat repair.

Poland308 wrote:Did I read that right on page 3 under applications there's a note about doing it on 2mm thickness? That would make it primarily for thin work. But possibly a great advantage for doing stuff like boat repair.

That's using their "Pulse AC MIG" setting. Yes, AC MIG is primarily targeted at thin aluminum to avoid distortion and burn through. Just like using Pulse on a TIG for thinner metals.

PeteM wrote:Something like this?

http://www.lincolnelectric.com/assets/U ... e12010.pdf

Thats the one

I believe it's still constant voltage AC. Not constant current AC as used with TIG, which is not going to work well with any MIG process. Voltage sensing feeders are no where as near as good on thin metal as CV power sourced feeders

Composed with Swype on mobile. not responsible for typos.

That would be my guess too since it only indicates setting voltage. In a CC mode I can imagine what long arcing on thin aluminum would do. Pain, destruction, and some very stern looks from the boss.