Method for manufacturing large-sized quartz glass tube

Details Method for manufacturing large-sized quartz glass tube Method for manufacturing large-sized quartz glass tube

1997-06-13

1998-07-28

Griffin, Steven P.

Glass manufacturing

Processes of manufacturing fibers, filaments, or preforms

Process of manufacturing optical fibers, waveguides, or...

65404, 65412, 65439, 65472, 65 31, 65 61, 65 63, 65102, 65105, 65108, 65112, 65DIG8, C03B 2000, C03B 2326, C03B 3700

Patent

active

057857296

ABSTRACT:
A method for fabricating a large-sized primary treated quartz glass tube by perforating a cylindrical quartz glass mother material by a hot carbon drill press-in-process followed by etching and washing. The large-sized primary treated quartz glass tube is converted to a large-sized quartz glass preform by combining it with a core glass rod for an optical fiber. Another embodiment is a method for fabricating a large-sized quartz glass tube by heating, hot drawing or hot drawing under pressure using a tool-free drawing method under control of an inside pressure of the large-sized primary treated quartz glass tube at a temperature ranging from 1600.degree. C. to 3000.degree. C. to satisfy a specific equation.

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