Hi again - what I'm finding on 6000-series alloys (typically
extrusions) is that as soon as you get into a real spray arc the arc
gets feisty - vivid colours, spitting and rasping, and if welding
6000-series to 5083, kicks sideways off the 6000-series onto the
5000-series.
Oh yes - and huge condensations of black powder around the welds
??
If you are in a lower power condition so you see Al depositing almost
like a stack-of-dimes, even if 5000-series to 6000-series, calm arc,
no misbehaviour and shiny silver welds metal and little condesation /
sooting around the weld. But - not much fusing power and you can be
left with re-entrant weld toes which look excessively like you are
risking cold laps.
??
Oh yes - and huge condensations of black powder around the welds
??
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