Method for manufacturing glass fibers from an infrared ray-transmitting
glass fiber material
    35.
    发明授权
    Method for manufacturing glass fibers from an infrared ray-transmitting glass fiber material 失效
    从红外线透射玻璃纤维材料制造玻璃纤维的方法

    公开(公告)号:US4343638A

    公开(公告)日:1982-08-10

    申请号:US226716

    申请日:1981-01-21

    Abstract: Glass material for infrared ray-transmitting optical fibers comprises a three-component material made of a 28 mol % to 38 mol % BaF.sub.2 -2 mol % to 7 mol % GdF.sub.3 -58 mol % to 69 mol % ZrF.sub.4 -based composition. The glass material is cast in a metal mold with a hollow section which is preheated to a temperature of at least 100.degree. C. but below the glass deformation temperature and annealing the melt in the metal mold to form a glass rod. The glass rod forming step includes heating the melt in the temperature range of between about 200.degree. C. and less than the glass deformation temperature and cooling the melt. The glass rod is removed from the metal mold and optically polished at the ends and sides and is then drawn into a fiber while applying tension to the tip of the glass rod while the glass rod is being heated. The glass rod is drawn into a glass fiber while maintaining the temperature at the end portion of the glass rod constant.

    Abstract translation: 用于红外线透射光纤的玻璃材料包括由28摩尔%至38摩尔%BaF 2 -2摩尔%至7摩尔%GdF 3 -58摩尔%至69摩尔%ZrF 4基组合物制成的三组分材料。 将玻璃材料铸造在具有中空部分的金属模具中,所述中空部分被预热至至少100℃但低于玻璃变形温度,并对金属模具中的熔体退火以形成玻璃棒。 玻璃棒形成步骤包括在约200℃至小于玻璃变形温度的温度范围内加热熔体并冷却熔体。 将玻璃棒从金属模具中取出并在端部和侧面进行光学研磨,然后在玻璃棒被加热的同时向玻璃棒的尖端施加张力而拉伸成纤维。 将玻璃棒拉伸成玻璃纤维,同时保持玻璃棒端部的温度恒定。

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