This paper presents a study on the expansion process, which joins fins to thick-walled microgroove tubes for high pressure air conditioning and refrigeration (ACR) heat exchanger. Experiments of the tube expansion process have been carried out. An FE model with explicit algorithm is established to study the forming quality of the tube and a novel FE model with implicit algorithm is developed to investigate the local tube-fin joining status. Evaluation of the joining quality along the longitudinal axis of the tube is tried. Both FE and experimental results show that in longitudinal section, tube-fin contact is far from full contact status and internal gaps are observed. Accordingly, process parameters and expanding die geometry are examined. Results show that among the processing factors, the expanding ratio is the major factor influencing the joining status and comprehensively beneficial range of the expanding ratio is discussed.
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April 2011
Research Papers
Mechanical Expansion of Thick-Walled Microgroove Tube for High Pressure ACR System
Ding Tang,
Ding Tang
School of Mechanical Engineering, State Key Laboratory of Mechanical System and Vibration,
e-mail: tangding@sjtu.edu.cn
Shanghai Jiao Tong University
, Shanghai 200240, China
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Dayong Li,
Dayong Li
School of Mechanical Engineering, State Key Laboratory of Mechanical System and Vibration,
Shanghai Jiao Tong University
, Shanghai 200240, China
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Yinghong Peng,
Yinghong Peng
School of Mechanical Engineering, State Key Laboratory of Mechanical System and Vibration,
Shanghai Jiao Tong University
, Shanghai 200240, China
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Zhaohui Du
Zhaohui Du
School of Mechanical Engineering, State Key Laboratory of Mechanical System and Vibration,
Shanghai Jiao Tong University
, Shanghai 200240, China
Search for other works by this author on:
Ding Tang
School of Mechanical Engineering, State Key Laboratory of Mechanical System and Vibration,
Shanghai Jiao Tong University
, Shanghai 200240, Chinae-mail: tangding@sjtu.edu.cn
Dayong Li
School of Mechanical Engineering, State Key Laboratory of Mechanical System and Vibration,
Shanghai Jiao Tong University
, Shanghai 200240, China
Yinghong Peng
School of Mechanical Engineering, State Key Laboratory of Mechanical System and Vibration,
Shanghai Jiao Tong University
, Shanghai 200240, China
Zhaohui Du
School of Mechanical Engineering, State Key Laboratory of Mechanical System and Vibration,
Shanghai Jiao Tong University
, Shanghai 200240, ChinaJ. Pressure Vessel Technol. Apr 2011, 133(2): 021202 (7 pages)
Published Online: January 31, 2011
Article history
Received:
April 26, 2008
Revised:
July 18, 2010
Online:
January 31, 2011
Published:
January 31, 2011
Citation
Tang, D., Li, D., Peng, Y., and Du, Z. (January 31, 2011). "Mechanical Expansion of Thick-Walled Microgroove Tube for High Pressure ACR System." ASME. J. Pressure Vessel Technol. April 2011; 133(2): 021202. https://doi.org/10.1115/1.4002257
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