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Large sized quartz glass tube, large scale quartz glass preform, process for manufacturing the same and quartz glass optical fiber
Large sized quartz glass tube, large scale quartz glass preform, process for manufacturing the same and quartz glass optical fiber
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机译:大型石英玻璃管,大型石英玻璃瓶坯,其制造方法以及石英玻璃光纤
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摘要
A quartz glass tube, produced by mechanically processing a natural/synthetic quartz glass mother material, having 50 - 300 mm φ in outer diameter, from 1.1 to 7 in outer to inner diameter ratio, 10 mm or more in thickness and 2% or less in thickness error; a large-scale quartz glass preform integrally combining the large-sized quartz glass tube with a core glass rod for an optical fiber using a rod-in-tube technique; and a method for manufacturing a large-scale quartz glass preform performing the mechanical processing with a high precision machine, i.e., integrating a core rod for an optical fiber under a rod in process with a quartz glass tube, a tube diameter of which is controlled by heating, hot drawing or hot drawing with pressure by using a tool-free drawing method.
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