The rotational speed of the main roll of a profile ring mill is critical for insuring the success of its rolling process. In this paper, a three dimensional finite element model of the profile ring rolling process is built based on the ABAQUS/Explicit algorithm. Using the proposed finite element model, the laws of the main roll rotational speed affecting the rolling process and the thermomechanical parameter distribution are analyzed systematically. A validity experiment is carried out for a compressor case ring of GH4169 alloy. The results show that axial shrinking of the profile ring is clearly observed when the rotational speed of the main roll is relatively high, and that the shrinkage is comparatively small when the rotational speed of the main roll is low. Additionally, with the increase of the rotational speed of the main roll, the thickness reduction per pass decreases, and the corresponding rolling force also decreases, but the inhomogeneity of temperature distribution within the ring increases. Therefore, it could be concluded that a lower rotational speed of the main roll should be adopted for profile ring rolling when the feed speed of the mandrel is constant.
MA Yiwei, WANG Zhihong, LIU Dong, ZHU Xinglin, YANG Zhishuo
. Optimization of Rotational Speed of Main Roll in Profile Ring Rolling of GH4169 Alloy[J]. ACTA AERONAUTICAET ASTRONAUTICA SINICA, 2011
, 32(8)
: 1555
-1562
.
DOI: CNKI:11-1929/V.20110316.1334.005
[1] 华林, 黄兴高, 朱春东. 环件轧制理论和技术[M]. 北京: 机械工业出版社, 2001: 1-5. Hua Lin , Huang Xinggao, Zhu Chundong. Theory and technology of the ring rolling[M]. Beijing: China Machine Press, 2001: 1-5. (in Chinese)
[2] Johnson W, Needham G. Experiments on ring rolling[J]. International Journal of Mechanical Sciences,1968, 10(2): 95-113.
[3] Johnson W, Macleod I, Needham G. An experimental investigation into the process of ring or metal type rolling[J]. International Journal of Mechanical Sciences, 1968, 10(6): 455-460.
[4] Hawkyard J B, Ingham P M. An investigation into profile ring rolling//Rotary Metalworking Processes. London: IFS(Publications) Ltd, 1979: 309-320.
[5] Hawkyard J B, Moussa G. Studies of profile development and roll force in profile Ring Rolling//3rd International Conference on Rotary Metalworking Processes. 1984: 301-310.
[6] Moussa G, Hawkyard J B. Investigation into the multi-stage ring rolling ofaluminium bicycle wheel rims[J]. International Journal of Mechanical Sciences, 1986, 28(12): 841-851.
[7] Salimi M, Hawkyard J B. Forming of thin V-section rings by ring rolling [J]. International Journal of Mechanical Sciences, 1988, 30(7): 517-532.
[8] Hua L, Zhao Z Z. The extremum parameters in ring rolling[J]. Journal of Materials Processing Technology, 1997, 69(1-3): 273-276.
[9] 袁银良, 华林, 左治江, 等. L形截面环件轧制进给速度对端面轴向宽展影响的研究[J]. 机械制造, 2006, 44(3): 28-32. Yuan Yinliang, Hua Lin, Zuo Zhijiang, et al. Effect of feed velocity of L-section ring rolling on axial width-spread of end plane[J]. Machinery, 2006, 44(3): 28-32. (in Chinese)
[10] Yan F L, Hua L, Wu Y Q. Planning feed speed in cold ring rolling[J]. International Journal of Machine Tools and Manufacture, 2007, 47(11): 1695-1701.
[11] Qian D S, Hua L, Pan L B. Research on gripping conditions in profile ring rolling of raceway groove[J]. Journal of Materials Processing Technology, 2009, 209(6): 2794-2802.
[12] 刘东, 付明杰, 万自永, 等. GH4169合金矩形截面环轧制曲线的实验研究[J]. 航空学报, 2007, 28(5): 1276-1280. Liu Dong, Fu Mingjie, Wan Ziyong, et al. Rolling strategies in the rollingprocess of GH4169 alloy with rectangle cross-section ring[J]. Acta Aeronautica et Astronautica Sinica, 2007, 28(5): 1276-1280. (in Chinese)
[13] 刘东, 罗子健. 以Zener-Hollomon参数表示的GH4169合金的本构关系[J]. 塑性工程学报, 1995, 2(1): 15-21. Liu Dong, Luo Zijian. The constitutive relationship for GH4169 alloy as a function of Zener-Hollomon parameter[J]. Plasticity Engineering, 1995, 2(1): 15-21. (in Chinese)
[14] 中国航空材料手册: 第2卷[M]. 北京: 中国标准出版社, 2002: 323-368 China aeronautical materials handbook: Voume Ⅱ[M]. Beijing: Standards Press of China, 2002: 323-368. (in Chinese)
[15] Hawkyard J B, Johnson W, Kirkland W, et al. Analyses for roll force and torque in ring rolling, with some supporting experiments[J]. International Journal of Mechanical Sciences, 1973, 15(11): 873-893.
CJA