Forming method of axial micro grooves inside copper heat pipe

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 mic...

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Published in:Transactions of Nonferrous Metals Society of China 2008-10, Vol.18 (5), p.1229-1233
Main Author: 李勇 肖慧 练彬 汤勇 曾志新
Format: Article
Language:English
Subjects:
ball spinning
heat pipe
micro groove
multi-tooth mandrel
热导管
球形旋压
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cited_by cdi_FETCH-LOGICAL-c469t-9ef1986f26c2998bb68c9ec04a8d30d8fdb28e78bfcfec6357ba4ced18e71a913
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description 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.
doi_str_mv 10.1016/S1003-6326(08)60209-5
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subjects ball spinning
heat pipe
micro groove
multi-tooth mandrel
热导管
球形旋压
title Forming method of axial micro grooves inside copper heat pipe
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