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    • 35. 发明专利
    • Method for manufacturing multilayer quartz glass tube and multilayer quartz glass rod
    • 制造多层石英玻璃管和多层石墨玻璃钢的方法
    • JP2005126261A
    • 2005-05-19
    • JP2003361922
    • 2003-10-22
    • Sumitomo Metal Ind Ltd住友金属工業株式会社
    • MITANI MAKOTOKATAHATA YUUKIYAMADA SADANOBUNAKAJIMA KEIGONISHISE TAKESHI
    • C03B20/00H01L21/205
    • C03B23/0496C03B23/207Y02P40/57
    • PROBLEM TO BE SOLVED: To provide a method for manufacturing a multilayer quartz glass tube and a multilayer quartz glass rod having an intermediate layer comprising one or more layers. SOLUTION: The method for manufacturing the multilayer quartz glass tube having the intermediate layer comprising one or more layers comprises: forming a rod-like multilayer quartz glass base material by using a quartz glass base tube as an outermost layer base material 1, a quartz glass base tube or a silica powder as an intermediate layer base material 2, and a quartz glass rod as an innermost layer base material 3; arranging a plug 20 on the axis center part of the end face of one end part of the multilayer quartz glass base material and a die 21 on the periphery of the one end part of the multilayer quartz glass base material; heating and softening the multilayer quartz glass base material successively from the end part of the multilayer quartz glass base material, moving it axially while rotating the multilayer quartz glass base material relatively to the plug and the die and force-feeding the multilayer quartz glass base material into a space formed by the plug and the die, thus piercing the innermost layer base material of the heated and softened part of the multilayer quartz glass base material and at the same time, press-welding the multilayer quartz glass base material. COPYRIGHT: (C)2005,JPO&NCIPI
    • 解决的问题:提供一种制造具有包括一层或多层的中间层的多层石英玻璃管和多层石英玻璃棒的方法。 解决方案:具有包括一层或多层的中间层的多层石英玻璃管的制造方法包括:通过使用石英玻璃基管作为最外层基材1形成棒状多层石英玻璃基材, 作为中间层基材2的石英玻璃基管或二氧化硅粉末,作为最内层基材3的石英玻璃棒; 在多层石英玻璃基材的一端部的端面的轴心部分上设置插塞20,在多层石英玻璃基材的一个端部的周围设置有模具21; 从多层石英玻璃基材的端部依次加热并软化多层石英玻璃基材,同时相对于插塞和模具旋转多层石英玻璃基材并强力供给多层石英玻璃基材,同时使其轴向移动 进入由插头和模具形成的空间,从而穿透多层石英玻璃基材的加热软化部分的最内层基材,同时对多层石英玻璃基材进行压焊。 版权所有(C)2005,JPO&NCIPI