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US 8,075,689 B2Granted
Apparatus for the production of silica crucible
AssigneeJapan Super Quartz Corporation
InventorMasaru Sato
Life of this patent
Estimating the term…
Abstract
In an apparatus for the production of a silica crucible comprising a carbon mold suitable for producing the silica crucible by the rotating mold method, the carbon mold has a thermal conductivity of not more than 125 W/(m·K).
Claims6
An apparatus for the production of a silica crucible comprising:
- a carbon mold for processing silica or quartz powder to form a silica or quartz powder deposition layer and for producing the silica crucible by a rotating mold method, characterized in that the carbon mold has a thermal conductivity of not more than 125 W/(m·K), and the carbon mold is configured to reduce pressure inside the silica or quartz powder deposition layer from the side of the mold;
- and
- an arc heater configured to heat the silica or quartz powder deposition layer from a spacing side of the carbon mold.
Dependencies are inferred from the claim text.