Journal of South China University of Technology (Natural Science Edition) ›› 2011, Vol. 39 ›› Issue (8): 13-18.doi: 10.3969/j.issn.1000-565X.2011.08.003

• Mechanical Engineering • Previous Articles     Next Articles

Compound Forming of Outside 3-Dimension Integral Fins on Stainless Steel Tubes

Zhang Xiao-xia1  Tang Yong1  Wan Zhen-ping1  Lu Long-sheng1  He Ya-ling2   

  1. 1. Key Laboratory of Surface Functional Structure Manufacturing of Guangdong Higher Education Institutes,South China University of Technology,Guangzhou 510640,Guangdong,China; 2. State Key Laboratory of Multiphase Flow in Power Engineering,Xi’an Jiaotong University,Xi’an 710049,Shaanxi,China
  • Received:2011-01-20 Revised:2011-05-10 Online:2011-08-25 Published:2011-07-06
  • Contact: 张小霞(1977-) ，女，博士生，主要从事微制造理论及数字化技术、表面功能结构制造研究． E-mail:xiaoxia6416@163.com
  • About author:张小霞(1977-) ，女，博士生，主要从事微制造理论及数字化技术、表面功能结构制造研究．
  • Supported by:

    国家自然科学基金委员会与广东省政府自然科学联合基金重点项目( U0934005) ; 国家自然科学基金资助项目( 51075155) ; 广东高校优秀青年创新人才培养计划项目( LYM09024 ) ; 华南理工大学自然科学青年基金资助项目( x2jqE5091010)

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Abstract:

In this paper,a novel plowing /extrusion tool is proposed to develop a new compound forming technique of rolling-plowing /extrusion to machine outside 3-dimension integral fins on stainless steel tubes. The machining process is divided into two stages: to fabricate V-ribs by rolling and to machine 3-dimension integral fins on the V-ribs by plowing /extrusion. Moreover,the morphologies of the ribs and the fins under different processing conditions were experimentally analyzed,and the effect of the plowing /extrusion depth and feed rate on the fin height and pitch were investigated. The results show that the optimal fins are machined at a rolling depth of 1. 20mm,a plowing/extrusion depth of 0. 25 ～ 0. 45mm and a feed rate of 2. 16 ~3. 92mm/r.

Key words: enhanced heat transfer, stainless steel tube, integral fin tube, rolling, plowing/extrusion

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