Forming mechanism of three-dimensional integral fin based on flat surface

To improve heat-transfer performance, a novel integral three-dimensional fin-structure on the plat surface was presented to increase the evaporation efficiency. The three-dimensional fin-structure is composed of a spiral micro-groove and multi radial micro-grooves. Both ploughing-extrusion (P-E) and...

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Bibliographic Details
Published inJournal of Central South University Vol. 22; no. 5; pp. 1660 - 1666
Main Authors Xiang, Jian-hua, Duan, Ji-an, Zhou, Hai-bo, Zhang, Chun-liang, Liu, Gui-yun, Zhou, Chao
Format Journal Article
LanguageEnglish
Published Changsha Central South University 01.05.2015
Subjects
Engineering
Metallic Materials
three-dimensional integral fin
enhanced boiling
stamping
ploughing-extrusion
micro groove
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ISSN2095-2899
2227-5223
DOI10.1007/s11771-015-2684-6

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Summary:To improve heat-transfer performance, a novel integral three-dimensional fin-structure on the plat surface was presented to increase the evaporation efficiency. The three-dimensional fin-structure is composed of a spiral micro-groove and multi radial micro-grooves. Both ploughing-extrusion (P-E) and stamping were used to form the integral-fins with a connection between radial and circumferential directions. Based on the SEM results, the relationships among P-E speed v P-E , rotational speed n p and feed f p , and among interference length L i , stamping feed angle θ c and stamping depth a c were analyzed. The effects of processing parameters on the groove morphology and the matching relationship between parameters were also discussed. The integral finned surface with micro-grooves and cracks can be obtained under such processing conditions: P-E depth a p =0.3 mm, a c =0.3 mm, the interval of helical groove d p =1.24 mm, θ c =2° and n p =50 r/min.
ISSN:2095-2899
2227-5223
DOI:10.1007/s11771-015-2684-6