In my early attempts at melting aluminum, I had several batches which I overheated, which consequently resulted in ingots which developed surface bubbles upon cooling that I assume represent dissolved hydrogen. I don't want to use this metal for castings if it will cool to a bubbly surface...is there a flux or something I can add when I re-melt the ingots to remove dissolved hydrogen? My current crucible is iron/steel if it matters, but I plan to order a graphite unit soon. I understand some fluxes are very hard on crucibles
-Roy
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degassing aluminum?
