Method of manufacturing crucible for double-crucible crystal gro

Details Method of manufacturing crucible for double-crucible crystal gro Method of manufacturing crucible for double-crucible crystal gro

1996-05-24

1999-06-29

Griffin, Steven P.

Glass manufacturing

Processes

With shaping of particulate material and subsequent fusing...

65 176, 65 36, 65 71, 65DIG8, 117213, 117 31, C03B 1904, C03B 1909, C03B 2320

Patent

active

059171030

ABSTRACT:
Quartz powder is fed into a rotating mold to form a crucible-like quartz powder layer body with the help of centrifugal force in the mold. The layer is melted by heating through the inner surface with an arc discharge to manufacture an outer crucible member. A hollow cylindrical inner crucible member having a beveled lower edge is welded to the outer crucible member while a temperature of the inner surface portion of the outer crucible member remains at 1400.degree. C. or higher by a remaining heat.

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