Journal of Computational & Applied Research in Mechanical Engineering (JCARME)

Document Type : Research Paper

Authors

Mechanical Engineering Department, Shahid Rajaee Teacher Training University, Tehran, Iran

https://doi.org/10.22061/jcarme.2017.647

Abstract

In this study, hot metal gas forming of AA6063 aluminum tube is numerically studied with a focus on heat transfer of both fluid and solid phases. An experimental study is simultaneously conducted to validate the numerical results. Finite volume method has been used to discretize the governing equations. Pressure-velocity coupling of fluid phases are performed through the SIMPLEC algorithm. Some of the most important outputs of the present study are velocity distribution of fluid inside the tube as well as the fluid in the gap between tube and matrices. Because of non-homogeneous distribution of temperature on the tube surface, circulating flows are generated inside the tube which may have considerable effects on heat transfer. It is seen that after 400 s, number of the circulating flows doubles. Analysis of temperature distribution reveals that middle part of the tube reaches 500 ̊C after 600 s and other parts have higher temperature. By applying an efficient control method for heating, temperature distribution of the tube reaches a more homogeneous form.

Graphical Abstract

Keywords

dor

20.1001.1.22287922.2017.7.1.4.8

Main Subjects

Fluid Mechanics

References

[1] V. Majdi and A. Taherian, "Hot forming of aluminum and magnesium parts," Manufacturing Review, vol. 31, No. 2, pp. 198-200, (2010).

[2] L. Vadillo, M. T. Santos, M. A. Gutierrez, I. Pérez, B. González, and V. Uthaisangsuk, "Simulation And Experimental Results Of The Hot Metal Gas Forming Technology For High Strength Steel And Stainless Steel Tubes Forming," AIP Conference Proceedings, vol. 908, No. 1, pp. 1199-1204, (2007).

[3] W. J. Kim, W. Y. Kim, and H. K. Kim, "Hot-air forming of Al-Mg-Cr alloy and prediction of failure based on Zener-Holloman parameter," Metals and Materials International, vol. 16, No. 6, pp. 895-903, (2010).

[4] M. S. Zoei, M. Farzin, and A. H. Mohammadi, "Finite element analysis and experimental investigation on gas forming of hot aluminum alloy sheet," presented at the 17th International Mechanical Engineering Conference, Tehran University, (2008).

[5] M. S. Zoei, M. Farzin, and A. H. Mohammadi, "Finite element analysis and experimental investigation on gas forming of hot aluminum alloy sheet," Tarbiat Modarres, vol. 11, No. 2, pp. 49-56, (2011).

[6] Z. B. He, B. G. Teng, C.Y. Che, Z. B. Wang, K. L. Zheng, and S. J. Yuan, "Mechanical properties and formability of TA2 extruded tube for hot metal gas forming at elevated temperature," Transactions of Nonferrous Metals Society of China, vol. 22, No. 2, pp. 479-484, (2012).

[7] T. Maeno, K.-i. Mori, and K. Fujimoto, "Hot gas bulging of sealed aluminium alloy tube using resistance heating," Manufacturing Review, vol. 1, No. 1, pp.1-5, (2014).

[8] T. Maeno, K. Mori, and K. Adachi, "Gas forming of ultra-high strength steel hollow part using air filled into sealed tube and resistance heating," Journal of Materials Processing Technology, vol. 214, No. 1, pp. 97-105, (2014).

[9] M. Nasrollahzadeh, H. Moslemi Naini, S. J. Hashemi, B. Abbaszadeh, and J. Shahbazi Karami, "Experimental investigation of Aluminum tubes hot gas forming and production of square cross-section specimens," Modares Mechanical Engineering, vol. 15, No. 12, pp. 435-442, (2016).

[10] K. Wang, G. Liu, J. Zhao, J. Wang, and S. Yuan, "Formability and microstructure evolution for hot gas forming of laser-welded TA15 titanium alloy tubes," Materials & Design, vol. 91, No. 1, pp. 269-277, (2016).

[11] A. Paul and M. Strano, "The influence of process variables on the gas forming and press hardening of steel tubes," Journal of Materials Processing Technology, vol. 228, No. 1, pp. 160-169, (2016).

[12] Y. Dong, K. Zheng, J. Fernandez, X. Li, H. Dong, and J. Lin, "Experimental investigations on hot forming of AA6082 using advanced plasma nitrocarburised and CAPVD WC: C coated tools," Journal of Materials Processing Technology, vol. 240, No. 2, pp. 190-199, (2017).

[13] H. Lee and G. C. Park, "Turbulent Natural Convection in a Hemispherical Geometry Containing Internal Heat Sources," JOURNAL-KOREAN NUCLEAR SOCIETY, vol. 30, No. 6, pp. 496-506, (1998).

[14] J. Van Doormaal and G. Raithby, "Enhancements of the SIMPLE method for predicting incompressible fluid flows," Numerical heat transfer, vol. 7, No. 2, pp. 147-163, (1984).

[15] R. Neugebauer, T. Altan, M. Geiger, M. Kleiner, and A. Sterzing, "Sheet metal forming at elevated temperatures," CIRP Annals - Manufacturing Technology, vol. 55, No. 2, pp. 793-816, (2006).

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