Forming method of axial micro grooves inside copper heat pipe  被引量:8

Forming method of axial micro grooves inside copper heat pipe

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作  者:李勇 肖慧 练彬 汤勇 曾志新 

机构地区:[1]School of Mechanical and Automotive Engineering,South China University of Technology

出  处:《中国有色金属学会会刊:英文版》2008年第5期1229-1233,共5页Transactions of Nonferrous Metals Society of China

基  金:Projects(50705031, 50436010) supported by the National Natural Science Foundation of China;Project(KF0707) supported by the Open Foundation of the Key Laboratory of Enhanced Heat Transfer and Energy Conservation, Ministry of Education, China;Project (8151064101000058) supported by the Natural Science Foundation of Guangdong Province, China

摘  要:The high-speed oil-filled ball spinning and drawing process was put forward to manufacture the axially grooved heat pipe with highly efficient heat-transfer performance,and the forming mechanism of micro-grooves inside the pipe was investigated.The key factors influencing the configurations of micro-grooves were analyzed.When the spinning depth varies between 0.4 mm and 0.5 mm,drawing speed varies from 200 mm/min to 450 mm/min,rotary speed is beyond 6 000 r/min and working temperature is less than 50 ℃,the grooved tubes are formed with high quality and efficiency.The ball spinning process uses full oil-filling method to set up the steady dynamic oil-film that reduces the drawing force and improves the surface quality of grooved copper tube.The high-speed oil-filled ball spinning and drawing process was put forward to manufacture the axially grooved heat pipe with highly efficient heat-transfer performance, and the forming mechanism of micro-grooves inside the pipe was investigated. The key factors influencing the configurations of micro-grooves were analyzed. When the spinning depth varies between 0.4 mm and 0.5 ram, drawing speed varies from 200 mm/min to 450 mm/min, rotary speed is beyond 6 000 r/min and working temperature is less than 50 ℃, the grooved tubes are formed with high quality and efficiency. The ball spinning process uses full oil-filling method to set up the steady dynamic oil-film that reduces the drawing force and improves the surface quality of grooved copper tube.

关 键 词:球形旋压 轧槽 热导管 紧轴 

分 类 号:TG146.11[一般工业技术—材料科学与工程]

 

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