Research and Analysis of Material Flow Regularity in the Process of Cross Wedge Rolling for Wrought Aluminum Alloy

Abstract:

With widely use of aluminum alloy in the cares and other industry fields and the like, the aluminum alloy workpieces are becoming the important components, such as load bearing and so on, in which it has been gradually paid attention to the formation and the producing roughcast of shaft forging part of aluminum alloy. the process of across wedge rolling for wrought aluminum alloy has gradually taken notice of improving production rate and saving metal in this field because of its advantages and superiorities. It is very necessary to research and analyze the flow regularity and forming characteristic of aluminum alloy. In this paper, the forming process of cross wedge rolling for wrought aluminum alloy is simulated with Deform 6.0 soft. Thus, it is analyzed that features about cross wedge rolling for aluminum alloy and changeable characteristic of stress in the central axis and changeable regular of effective stress in wedging stage and stretching stage . At the same time, it is researched that the flow characteristic of aluminum alloy from outer layer to central axis. The results as following: in the forming process of cross wedge rolling for aluminum alloy, the central portion of workpiece is applied by two pairs of tensile stress and one pair of compression stress. The flowing velocity of aluminum alloy is gradually reducing from outer layer to center portion along workpiece’s axis. Keywords: Cross Wedge Rolling, Wrought Aluminum alloy, Stress, Numerical simulation

• Periodical: Materials Science Forum (Volumes 704-705)
• Pages: 172-176
• DOI: https://doi.org/10.4028/www.scientific.net/MSF.704-705.172
• Online since: December 2011
• Authors: Pei Feng Zhao, Cun Cang Han, Yan Min Zhang, Ke Xing Song
• Keywords: Cross Wedge Rolling (CWR), Numerical Simulation, Stress, Wrought Aluminum Alloy

References

[1] Muojekwu A Cdin Q D et a1. Mechanical Working and Steel Processing Conf. Hamitton, 1995, p.93.

[2] C.M. Sellars. Aluminium Transformation Technology and Application. Materials Science.

[3] H. P. STUÈWE and P. LES. Strains Rate Sensitivity of Flow Stress at Large Strains. Actametall, Vol. 46, No. 18(1998), p.6375~6380.

DOI: 10.1016/s1359-6454(98)00324-3

[4] Chungtm Xu, Gtmrsheng Ren, Jingliang Wang ete. The research and application of the combined forming process for precise forngs. In: The Seventh Area Symposium on Preeimon Forging. Gmlin. (2000), p.99~103.

[5] Masami Ishii, et. al. The development of high precision cross-rolling method, proc. 3rd Int. Conf. Rotary Metalworking Processes. (1984).

[6] Z. Pater, Theoretical and experimental analysis of cross wedge rolling process. Intenational Journal of Machine Tools & Manufacture, Vol. 40(2000), p.49~63.

DOI: 10.1016/s0890-6955(99)00047-4

[7] Yaoming Dong, Analysis of stress in cross wedge rolling with application of failure, International Journal of Mechanical Sciences, Vol. 42(2000), p.1233~1253.

DOI: 10.1016/s0020-7403(99)00035-1