制作微通道板的玻璃纤维拉丝炉温度场研究

Temperature Field of Glass Fiber-Drawing Furnaces for Microchannel Plate Fabrication

摘要: 制作微通道板的玻璃纤维需要经过拉丝炉拉制而成，拉丝炉的温度场分布直接影响丝径的均匀性，而目前缺乏制作微通道板的玻璃纤维拉丝炉的理论研究，依靠经验所设计的拉丝炉性能差异较大，为此本文根据拉丝炉的实际结构，构建对应的三维模型，利用热传递理论对模型进行分析，重点研究炉芯中心位置、加热温度均匀性和保温层均匀性对拉丝炉内部温度场的影响，根据理论分析结果对微通道板拉丝炉的改进给出了3个方面的建议。

Abstract: The glass fiber used in microchannel plate fabrication must be drawn in drawing furnaces. The temperature field distribution of the drawing furnace directly affects the uniformity of the wire diameter. Owing to the lack of theoretical research on glass fiber-drawing furnaces for microchannel plate fabrication, the designed drawing furnace and performance differences are based on experience. Based on the actual structure of a drawing furnace, this study aims to develop its corresponding 3D model on the basis of the theory of heat transfer analysis and to investigate the effects of the center of the furnace core, the uniformity of the heat insulation layer, and the drawing furnace temperature uniformity on the internal temperature field. Based on the theoretical analysis results, three suggestions are given to improve the drawing furnace for making micro channel plate.