Method for producing glass soot deposit

Details Method for producing glass soot deposit Method for producing glass soot deposit

1992-06-05

1993-10-05

Lindsay, Robert L.

Glass manufacturing

Processes

Forming product or preform from molten glass

65 12, 65355, C03B 37018

Patent

active

052500977

ABSTRACT:
A glass soot deposit is produced at a high deposition rate by blowing a gaseous glass-forming raw material together with a fuel gas from a combustion burner in a closed muffle, hydrolyzing the glass-forming raw material in a flame to generate glass soot, and depositing the glass soot on a tip end or a peripheral surface of a starting member which is rotated to form a glass soot deposit, in which a lowest surface temperature of the muffle tube is maintained at 50.degree. C. or higher and an average surface temperature of the muffle is maintained in a range between 50.degree. C. and 150.degree. C., whereby corrosion of the muffle is prevented.

REFERENCES:
patent: 4202682 (1980-05-01), Black
patent: 4253863 (1981-03-01), Iyengar
Patent Abstracts of Japan vol. 12, No. 15 (C-469) (2862), 16 Jan. 1988 & JP-A-62 171 938 (Sumitomo Electric Ind. Ltd.) 28 Jul. 1987.

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