Can You Welding The Aluminum With Hobart 140
I would not recommend it, but if you really have no other option and have 120v power supply, an mvp machine, mig or tig, might be worth looking into, you can watch the video below to learn about Hobart 140 spool gun installation.
The 140 will only have enough power to weld up to 1/8" if its clean and Argon is what you use with aluminum.But still, it is possible for you to weld aluminum with this unit.You can try to buy a spool and if it doesn't work you will still have the bottle and the wire for your new welder/spool gun combo.
However, it will take your patients and some practice.Just keep at it till you get all settings fine tuned, even some of the contras with it, the Hobart Handler 140 are still the MIG welder who are not want to go with the 220 unit welder. - You can read the hobart 140 review by clicking the link below...
Working with aluminum was a unique challenges, and it is important for you to clean the aluminum before welding, this will remove the oxide layer and use only a stainless steel wire brush for cleaning the aluminum.
Compared to welding with other steel materials, the most common problem with the aluminum was the feedability, it's incomplete fusion at the start of a weld, and crater or termination cracking at the ends of the weld.The best feeding of wire for aluminum is done with a spool gun. If you can’t use a spool gun, use the shortest gun possible and keep the gun as straight as possible.Use Argon only for shielding the gas and only use a push gun technique when welding aluminum.
The Best Way To Welding AluminumThe best method for welding aluminum is by using the tungsten inert gas welding.TIG welders are fairly expensive and it’s hard to justify buying even the lowest quality units unless you are making money with your welding.
When the tungsten gets touches the weld pool or the filler, the arc becomes unstable and the weld quality goes way down.It maybe will happens to you.And the solution for you to fixing this is to remove the tungsten, lay it on a flat surface with the contaminated part hanging over the edge, hit the contaminated part of the tungsten (it will snap right off), reinstall the tungsten, change the polarity to DCEP (direct current electrode positive), strike an arc on some scrap metal to re-ball the tungsten, switch back to AC high, and you’re ready to weld again. - source: http://artsautomotive.com/