Method for making a silica glass crucible

Details Method for making a silica glass crucible Method for making a silica glass crucible

2011-08-09

2011-08-09

Johnson, Christina (Department: 1742)

Plastic and nonmetallic article shaping or treating: processes

Forming articles by uniting randomly associated particles

Utilizing centrifugal force

C065S144000, C065S302000, C065S017300, C264S123000, C264S125000

Reexamination Certificate

active

07993556

ABSTRACT:
A rotating mold has a plurality of air channels that communicate with a cavity formed in the mold. Silica grain is deposited in the rotating mold and then formed into the shape of a crucible having a lower portion that comprises a substantially uniformly thick wall. An upper portion of the grain is formed into a substantially narrowed wall portion about the perimeter of the formed shape. The silica grain is heated, and a pump draws gas through the air channels while the silica fuses. There is a pressure drop across the narrowed wall portion. After fusing, the upper portion of the crucible, including the narrowed wall portion, is cut off.

REFERENCES:
patent: 4956134 (1990-09-01), Luc
patent: 4963178 (1990-10-01), Brown et al.
patent: 5082484 (1992-01-01), Koseki et al.
patent: 2002/0029737 (2002-03-01), Sato et al.
patent: 2003/0012898 (2003-01-01), Kemmochi et al.
patent: 2005/0120945 (2005-06-01), Hansen
patent: 2000-219524 (2000-08-01), None

Affiliated with

Also associated with

Rating

Method for making a silica glass crucible does not yet have a rating. At this time, there are no reviews or comments for this patent.

If you have personal experience with Method for making a silica glass crucible, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Method for making a silica glass crucible will most certainly appreciate the feedback.

Rate now

Comments { 0 }

Profile ID: LFUS-PAI-O-2776712