I just watched this (https://youtu.be/jLX1-tNnvEo?t=897)(14:57) and the guy in the video used vacuum and argon gas to remove any oxygen from the melter but I don’t understand why is the argon used if you are already vacuuming all the air out anyway?
In: Chemistry
It’s difficult to get a perfect vacuum. If you absolutely need to remove all the oxygen, you’d displace it with something inert (like argon) then suck out as much of the argon as you can.
I didn’t watch the video, so hopefully I’m not talking out of my ass.
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