Method for producing a quartz glass body
Number of patents in Portfolio can not be more than 2000
United States of America Patent
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N/A
Issued Date -
Oct 31, 2002
app pub date -
Jan 11, 2002
filing date -
Mar 14, 2000
priority date (Note) -
Abandoned
status (Latency Note)
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Abstract
The invention relates to a procedure for manufacture of a quartz glass body by deposition of SiO.sub.2 particles on the outer surface of a cylindrical mandrel rotating around its longitudinal axis under formation of an essentially cylindrical porous blank with an inside bore hole, and by removing the mandrel and sintering of the blank, characterized in that the mandrel in the area of one of the ends of the successively forming blank is surrounded by a shaping element rotating at the same rotation velocity as the mandrel, such shaping element having a core area facing the blank which is at least partially removably embedded into the front face of the successively forming blank and which is removed before sintering after having widened the inside bore hole of the blank with a shape complementary to that of the core area.
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