公开(公告)号：US3741796A

公开(公告)日：1973-06-26

申请号：US3741796D

申请日：1971-03-05

Applicant: TEXAS INSTRUMENTS INC

Inventor： WALKER J

IPC: C03B19/14 ,  C03C3/06 ,  C04B35/14 ,  C04B41/45 ,  C04B41/50 ,  B44D1/08

CPC classification number: C04B41/5025 ,  C01B33/113 ,  C03B19/1423 ,  C03B19/1446 ,  C03B19/1492 ,  C03B2207/06 ,  C03B2207/12 ,  C03B2207/20 ,  C03B2207/42 ,  C03B2207/50 ,  C03B2207/64 ,  C03B2207/87 ,  C03C3/06 ,  C03C2201/02 ,  C03C2203/44 ,  C04B35/14 ,  C04B41/4505 ,  Y10S65/08

Abstract: A PLURALITY OF TORCH FLAMES EACH RESULTING FROM THE COMBUSTION OF GASEOUS SILICON TETRACHLORIDE AND A MIXTURE OF HYDROGEN AND OXYGEN ARE DIRECTED UPON A GRAPHITE MANDREL IN ORDER TO FORM A HIGH PURITY SILICIA ARTICLE UPON THE MANDREL. STRUCTURE MAY BE PROVIDED TO PREVENT THE BUILDUP OF DEPOSITS UPON THE NOZZLES OF THE TORCHES TO PREVENT OBSTRUCTION OF THE NOZZLE OPENINGS. ADDITIONAL GLAZING TORCHES MAY BE UTILIZED TO TREAT THE SILICA ARTICLES AS THEY ARE FORMED UPON THE MANDREL.