Numerical Simulation of Cold Extrusion Process of the ZA Alloy Car Sleeve Based on LS-DYNA

Abstract:

In order to increase the useful life of sleeve, improve the organizational structure and reduce costs, ZA alloy materials can be used as a raw material using cold extrusion technology for production. The main content of this paper is simulating the change rules of the equivalent plastic strain, the equivalent stress and the flow in the forming process of ZA alloy in different extrusion speed and friction coefficient condition by finite element technology, making a contrastive study with the extrusion theory, and finding out the most appropriate extrusion processing parameters. The results not only provide sufficient theatrical support for the cold extrusion process of sleeve of ZA alloy, but also offer some new thoughts for the design of extrusion mold.

• Periodical: Applied Mechanics and Materials (Volumes 411-414)
• Pages: 3056-3059
• DOI: https://doi.org/10.4028/www.scientific.net/AMM.411-414.3056
• Online since: September 2013
• Authors: Zhi Qiang Li, Han Xun Lv, Bing Dong Liu, Zhang Yi Yu
• Keywords: Car Sleeve, Cold Extrusion, Equivalent Strain, Equivalent Stress, Za Alloy

References

[1] Da-chang Kang, Xi-cheng Gao. Study on the deformation mode of conventional spinning of plates. Journal of Materials Processing Technology, 1999, (91): 226-23.

[2] Gang Fang, Jie Zhou, J Duszczyk urek. Effect of pocket design on metal flow through single-bearing extrusion dies to produce a thin-walled aluminum profile. Journal of Materials Processing Technology, 2007, 1: 11.

DOI: 10.1016/j.jmatprotec.2007.08.033

[3] J Zhou, L Li, Duszczyk J. Computer simulated and experimentally verified isothermal extrusion of 7075 aluminum through continuous ram speed variation. Journal of Materials Processing Technology, 2004, (146): 203-212.

DOI: 10.1016/j.jmatprotec.2003.10.018

[4] Langkruis J V D, Lof J, Kool W H, et al. Comparison of experimental AA6063 extrusion trials to 3D numerical simulations, using a general solute-dependent constitutive model. Computational Materials Science 2000, (18): 381-392.

DOI: 10.1016/s0927-0256(00)00122-1

[5] MAEGAARD V. Cold forging of net or near-net shape components. Journal of Materials Processing Technology, 1992, 35(3-4): 429-438.

DOI: 10.1016/0924-0136(92)90332-m

[6] Xiao-bin Deng, Lin Hua, Xing-hui Han et al. Numerical and experimental investigation of cold rotary forging of a 20CrMnTi alloy spur bevel gear. Materials ＆Design, 2011, 32(3): 1376-1389.

DOI: 10.1016/j.matdes.2010.09.015