In most cases it will take 21 23 volts to get the arc to spray transfer.
Mig welding aluminum tips.
You start slower when the piece is cold and move faster as the base metal heats up.
Keep in mind these important factors when mig welding aluminum for your application.
Aluminum gmaw gas metal arc welding for aluminum.
That is the reason for spool guns.
A short stickout on aluminum can burn up tips.
The output capacity of your welder determines the thickness you can weld.
Aluminum mig welding tips to prevent this.
Tips for getting started.
But for mig welding aluminum spray transfer is used.
More tips for spool gun mig aluminum welding spool guns make me feel powerful.
And a longer stickout works better for spray transfer usually around 3 4 works.
Aluminum wire is much softer than steel and is hard to feed very far thru a liner.
To mig weld aluminum thinner than 14 gauge 074.
If welding out of position you will want the wire feed speed fast enough to keep the weld full of metal at a fast crackle.
Whereas with a conventional mig setup the liner is usually about 8 10 feet long.
With a spool gun the wire only has toe fed for a few inches.
Though to be honest compared to welding mild steel welding aluminum is going to feel like you are zipping through uncomfortably fast.
Material thicknesses of aluminum that can be mig welded are 14 gauge and heavier.
You should be moving about twice the speed compared to welding mild steel to prevent.
The settings needed to mig weld aluminum are pretty much the same for all positions.