Vacuum refining is an advanced process to obtain glasses with good quality. In this paper, a new process is proposed for refining under subatmospheric pressure in which glass levels in the refining zone were set at the same height as that of the melting tank by using plunger and screw pump.
Origin
Asahi Glass, Japan
Journal Title
Proc Xviii Icg, San Francisco, Usa, July 1998 141-146
Sector
Special Glass
Class
S 1852