Forming Process and Mechanism of Microcapillary Grooves of Miniature Cylindrical Heat Pipe
Miniature heat pipe is one of promising means of removing high heat flux for electronics cooling in limited available space. How to produce narrow and deep microcapillary grooves is the critical issue in promoting performance of axially grooved miniature heat pipe. In this work, the microcapillary grooves for miniature cylindrical heat pipe was fabricated by using oil-filled high speed spinning method. The forming process of microcapillary grooves was investigated. The influence of technical parameters on characteristics of microcapillary grooves was analyzed and the optimal technical parameters were found out. The experimental results show that drawing speed ranging from 48cm/min to 64cm/min, spinning ball number of 4 and big distance between the end of multi-tooth mandrel and the center of spinning balls within 3.7 mm should be chosen to obtain narrow and deep microcapillary grooves. In addition, the forming mechanism was investigated by observing microstructure of cross-section of microcapillary grooved tubes.
Miniature heat pipe Microcapillary grooves High speed spinning Electronics cooling
Zhen Ping Wan Yao Chao Li
School of Mechanical and Automotive Engineering, South China University of Technology Guangzhou 510640, China
国际会议
2011 International Conference on Mechatronics and Materials Processing(2011年机电一体化与材料加工国际会议 ICMMP)
广州
英文
22-26
2011-11-18（万方平台首次上网日期，不代表论文的发表时间）