You might find this kind of furnace used to cast titanium. I’m a
bit foggy about the fine points but I seem to remember that one of
the dental labs in town is casting titanium partial denture
frameworks in some kind of vacuum furnace/casting machine. I also
remember that the cost then ( 15 years ago) was about $15-20K!!!
Hope this helps
Mike & Dale, Lone Star Technical Services,
Your ultrasonic repair guys.