Influence of the processed material on the declination of the form of the received microfinning when producing capillary-porous structures of heat pipes by the method of deforming cutting

Authors: Liu Wei
Published in issue: #6(47)/2020
DOI: 10.18698/2541-8009-2020-6-622

Category: Mechanical Engineering and Machine Science | Chapter: Technology and Equipment of Mechanical and Physical Processing

Keywords: heat pipe, capillary-porous structure, deforming cutting, coefficient of increase of surface area, width of interfin gap, fin height, copper, aluminum
Published: 27.07.2020

The geometric parameters of the capillary-porous structure in the form of microfinning  are the main factor determining the operational characteristics of the heat pipe. In this work, we  studied the deviation of the shape of the obtained microfinning in the manufacture of capillary-porous structures of a heat pipe from various materials by the method of deforming cutting. The experiment was carried out on a screw-cutting lathe with the help of a fixture - a roller, which has the possibility of fixing and tensioning the processed strip. Photos are obtained of thin sections of finned capillary-porous structure from various materials obtained by deformation cutting with different feeds. The theoretical profile is calculated and the obtained forms of capillary structures are compared at various finning steps.


[1] Delendik K.I., Kolyago N.V., Penyaz’kov O.G., et al. Development of heat pipes for cooling thermally stressed electronics elements. Inzhenerno-fizicheskiy zhurnal [Journal of Engineering Physics and Thermophysics], 2019, vol. 92, no. 6, pp. 2577–2584 (in Russ.).

[2] Bahman Z. Heat pipe design and technology. Taylor & Francis Inc, 2011.

[3] Dunn P.D., Reay D.A. Heat pipes. Pergamon, 1976. (Russ. ed.: Teplovye truby. Moscow, Energiya Publ., 1979.)

[4] Matveev A.G., Zelentsov D.V. [Study on heat transfer problems in heat pipes]. Traditsii i innovatsii v stroitel’stve i arkhitekture. Stroitel’nye tekhnologii [Traditions and innovations in building and architecture]. Samara, SGTU Publ., 2018, pp. 347–351 (in Russ.).

[5] Yakomaskin A., Afanasiev V., Zubkov N., et al. Investigation of heat transfer in evaporator of microchannel loop heat pipe. J. Heat Transfer, 2013, vol. 135, no. 10, art. 101006. DOI: https://doi.org/10.1115/1.4024502

[6] Abrosimov A.I., Sysoev V.K., Zubkov N.N., et al. Longitudinal capillary channels for heat pipes. Prikladnaya fizika [Applied Physics], 2010, no. 1, c. 123–125 (in Russ.).

[7] Zubkov N., Yakomaskin A. Microgrooved wicks for heat pipes made by edge cutting machining. 2nd Int. Conf. “Heat Pipes for Space Application”. Moscow, 2014, pp. 5.8.

[8] Zubkov N.N. Multifunctional technology for the parts surface area enlargement for heat transfer and processing characteristics enhancement. Polet [Flight], 2003, no. 3, pp. 41–46 (in Russ.).

[9] Pis’mennyi E.N., Khayrnasov S.M., Rassamakin B.M. Heat transfer in the evaporation zone of aluminum grooved heat pipes. Int J. Heat Mass Transf., 2018, vol. 127-C, pp. 80–88. DOI: https://doi.org/10.1016/j.ijheatmasstransfer.2018.07.154