During hot extrusion process, die wear shortens markedly the service life of extrusion dies under the high-pressure, high-temperature conditions. In this paper, based on modified Archard's wear model, a user-defined subroutine for calculating die wear depth was developed and implanted into DEFORM-3D. On the basis of the numerical model, the die wear behavior during aluminum alloy 7075 tube extrusion has been investigated. The numerical results show that process variables have multiple effects on die wear behavior. With the increasing ram speed, wear depth of die bearing rises and then tends to decline gradually. From the ram speed of 15 mm/s, die wear depth begins to increase again. Wear depth rises suddenly with the increase of friction coefficient, then gradually reduces. When friction coefficient is greater than 0.8, wear depth tends to be a constant. A maximum wear depth occurs at 430 °C of billet temperature, and a minimum wear depth occurs at certain die temperature in the range of 400–425 °C. In addition, the required extrusion force has strong dependence on process variables. The extrusion force rises clearly with the increase of ram speed and friction coefficient and with the decrease of initial temperatures of billet and die.
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January 2013
Research-Article
An Investigation of Die Wear Behavior During Aluminum Alloy 7075 Tube Extrusion
Cunsheng Zhang,
Cunsheng Zhang
Key Laboratory for Liquid-Solid Structural
Evolution and Processing of Materials
(Ministry of Education)
State Key Laboratory of Materials Processing
and Die & Mould Technology
e-mail: zhangcs@sdu.edu.cn
Evolution and Processing of Materials
(Ministry of Education)
Shandong University
Jinan, Shandong 250061
, P. R. C.
State Key Laboratory of Materials Processing
and Die & Mould Technology
Huazhong University of Science and Technology
Wuhan, Hubei 430074
, P. R. C.
e-mail: zhangcs@sdu.edu.cn
Search for other works by this author on:
Guoqun Zhao,
Guoqun Zhao
1
e-mail: zhaogq@sdu.edu.cn
1Corresponding author.
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Hao Chen,
Hao Chen
e-mail: chenhao1984223@163.com
Key Laboratory for Liquid-Solid Structural
Evolution and Processing of Materials
(Ministry of Education)
Key Laboratory for Liquid-Solid Structural
Evolution and Processing of Materials
(Ministry of Education)
Shandong University
Jinan, Shandong 250061
, P. R. C.
Search for other works by this author on:
Peng Li
Peng Li
Search for other works by this author on:
Cunsheng Zhang
Key Laboratory for Liquid-Solid Structural
Evolution and Processing of Materials
(Ministry of Education)
State Key Laboratory of Materials Processing
and Die & Mould Technology
e-mail: zhangcs@sdu.edu.cn
Evolution and Processing of Materials
(Ministry of Education)
Shandong University
Jinan, Shandong 250061
, P. R. C.
State Key Laboratory of Materials Processing
and Die & Mould Technology
Huazhong University of Science and Technology
Wuhan, Hubei 430074
, P. R. C.
e-mail: zhangcs@sdu.edu.cn
Guoqun Zhao
e-mail: zhaogq@sdu.edu.cn
Tingting Li
e-mail: litingting198801@163.com
Yanjin Guan
e-mail: guan_yanjin@sdu.edu.cn
Hao Chen
e-mail: chenhao1984223@163.com
Key Laboratory for Liquid-Solid Structural
Evolution and Processing of Materials
(Ministry of Education)
Key Laboratory for Liquid-Solid Structural
Evolution and Processing of Materials
(Ministry of Education)
Shandong University
Jinan, Shandong 250061
, P. R. C.
Peng Li
1Corresponding author.
Contributed by the Tribology Division of ASME for publication in the Journal of Tribology. Manuscript received March 9, 2012; final manuscript received August 28, 2012; published online December 20, 2012. Assoc. Editor: Robert Wood.
J. Tribol. Jan 2013, 135(1): 011602 (9 pages)
Published Online: December 20, 2012
Article history
Received:
March 9, 2012
Revision Received:
August 28, 2012
Citation
Zhang, C., Zhao, G., Li, T., Guan, Y., Chen, H., and Li, P. (December 20, 2012). "An Investigation of Die Wear Behavior During Aluminum Alloy 7075 Tube Extrusion." ASME. J. Tribol. January 2013; 135(1): 011602. https://doi.org/10.1115/1.4023081
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