[PeterM]

I know you can weld Aluminum with Mig from seeing videos. I have been looking at machines and even the Miller and Lincoln high end machines are only DC. How do they do Aluminum without the cleaning action of AC?
Thanks, Peter.

[Coldman]

Aluminium mig is done with DCEP (electrode positive) which is the cleaning cycle used with AC tig.

[Farmwelding]

And it is still necessary to have cc/cv to run the wire at a constant current/voltage otherwise mo doesn't function like it should at all.

[Coldman]

Don't understand what that was about. Mig is a constant voltage process. Therefore current must be varying.


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[PeterM]

Thanks.

[Farmwelding]

Sorry coldman was right. I mistakenly put cc/cv and constant current. The brain got itself mixed up. Constant voltage os still required for mig but constant current is for gtaw and smaw.