Method for the production of quartz-glass objects by drawing

Details Method for the production of quartz-glass objects by drawing Method for the production of quartz-glass objects by drawing

1975-11-10

1977-06-28

Lindsay, Jr., Robert L.

Glass manufacturing

Processes

Operating under inert or reducing conditions

65134, 65136, C03B 516

Patent

active

040323153

ABSTRACT:
A method for producing quartz glass objects starting from a melt of silicon dioxide in helium and hydrogen atmosphere. The drawn objects are first heated in the temperature range of 800.degree.-1400.degree. C and thereafter at a temperature of at least 1600.degree. C. The result is a considerable reduction in the number of bubbles.

REFERENCES:
patent: 3459522 (1969-08-01), Elmer et al.
patent: 3717450 (1973-02-01), Loughridge et al.
patent: 3764286 (1973-10-01), Antczak et al.
patent: 3775077 (1973-11-01), Nicastro et al.

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