Spatter at the Aluminun MIG welding

[Raul]

Hi Friends.

I have a Millermatic 212 with spoolmatic. All welding show a spatter and smoke around the weld. I tried with different parameters and the result it same. How can I to do for eliminate these problems?
Thanks.

[Broccoli1]

You'll have to list YOUR parameters because we can't read minds.

If the wire is coming out and the gas is good it usually is the Contact Tip to Work Distance

[aametalmaster]

I don't worry about the black stuff. Its impossible to get perfect welds with the repair work i do...Bob

http://www.thefabricator.com/article/aluminumwelding/how-to-recognize-minimize-weld-smut

[bob_e95482]

Be sure that you are pushing the weld. The black smoke will always be there. It will be IN the bead if you pull. It will come off with a wire brush.

[Goodhand]

1. Type of gas for coverage? You should be using Argon for aluminum.
2. Polarity?
3. Stickout?
4. Push or pull?

[USARMY44B]

alum likes to be pushed. as far as the spatter thats aluminum i run my stuff at about 20 volts and like 400 imp