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A new mathematical model for predicting the diameter expansion of flat ring in radial–axial ring rolling

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Abstract

An accurate prediction for the diameter expansion is quite essential for the ring rolling with large diameter since it determines the compatibility between the work rolls and the deformed ring in kinematics, so that the rolling stability and the final forming quality of the ring are influenced. A new mathematical model for predicting the diameter expansion of the flat ring in the radial–axial rolling process has been proposed, in which the variation of cross section, the particularity of initial rolling phase, and the effect of slip are all taken into consideration. Based on the proposed mathematical model, a 3D-FEM model for the radial–axial ring rolling process has been developed, and the corresponding experimentation has also been carried out. The diameter expansion in the simulation shows a good agreement with that in the experimentation. The forming quality comparison concerning the circularity, coaxiality, and tilting of the rolled ring has been executed between the former and new proposed method. The result indicates that the new mathematical method is very helpful to control the forming stability and hence improve the ring rolling quality significantly.

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Acknowledgments

The authors would like to thank for the support of Ministry of Science and Technology Sino-German Cooperation Project (2010DFA51860), Natural Science Foundation Project of CQ (CSTC, 2010BB4245) and the Fundamental Research Funds for the Central Universities of China (CDJZR1013 0019).

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Authors and Affiliations

  1. College of Material Science and Engineering, Chongqing University, Chongqing, 400044, China

    Wujiao Xu, Xiaobing Yang, Xiaotao Gong & Jie Zhou

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  1. Wujiao Xu
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  2. Xiaobing Yang
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  3. Xiaotao Gong
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  4. Jie Zhou
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Correspondence to Xiaobing Yang.

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Xu, W., Yang, X., Gong, X. et al. A new mathematical model for predicting the diameter expansion of flat ring in radial–axial ring rolling. Int J Adv Manuf Technol 60, 913–921 (2012). https://doi.org/10.1007/s00170-011-3666-y

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  • DOI: https://doi.org/10.1007/s00170-011-3666-y

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