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Aluminum set up
Posted: Mon Mar 11, 2019 7:05 pm
by rjr8009
Hey guys, trying to weld aluminum for a JIG. I have a Miller Syncrowave 250 DX, FUPA12 cups and am using 3/32 grey tungtstens that are blunted. In the pictures posted below, I have also jumped up to 200 amps, as well as turned my continuous HF on. 15-20 CFH Argon. The pieces are not clean, I am simply trying to establish a puddle before I clean any scrap pieces up to run real beads on. Thanks fellas
Re: Aluminum set up
Posted: Mon Mar 11, 2019 9:53 pm
by LtBadd
Ok, do you have a question?
What is the thickness of the aluminum plate your welding?
Re: Aluminum set up
Posted: Mon Mar 11, 2019 11:09 pm
by koenbro
I think FUPA cups are not recommended for AC because they can short out. Also there is an amp limit of around 150-175 IIRC for DC.
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Re: Aluminum set up
Posted: Tue Mar 12, 2019 6:37 am
by cj737
You don’t need a Fupa for aluminum. Drop to a #8.
Re: Aluminum set up
Posted: Tue Mar 12, 2019 6:45 am
by amusick10
What’s the purpose behind the HF being on full time? Shouldn’t it just be needed to start the arc?
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Re: Aluminum set up
Posted: Tue Mar 12, 2019 11:36 am
by Oscar
You should not have black soot on such clean aluminum. Make sure you are not trying to weld anodized aluminum. For aluminum that clean (it should all be as clean as possible). you should only have a frosty white band from the cleaning action/etching.
