Bending Deformation of U75V Heavy Rail through Natural Cooling Process

Author:

Song Hua1,Tong Shan Hu2,Jiang Juan Juan2,Jia Hao3,Yuan Si Yu3,Liu He3,Lian Fa Bo2,Li Kui Xing2

Affiliation:

1. University of Science and Technology

2. University of Science and Technology Liaoning

3. Anshan Iron and Steel Co. Ltd.

Abstract

The cooling process of heavy rail is the important step to the output, that the preflexed rail is cooled on the stepping-type cold bed which has been carried by the chain transmission device. We employed the finite element method to analyze the bending deformation of the U75V rail through natural cooling process, the effected factors including the rail side-laying on the cold bed, the latent heat of phase change, and the thermal radiation are considered in the analysis. In the paper, we discussed the establishment of the heavy rail cooling model, the cooling parameters and the boundary condition, and emphatically analyzed the rail bending deformation changes and its principles through the cooling process. The study of the hundred-meter high speed heavy rail can provide the theoretical foundation and reference value to the formulation of cooling technical parameters and preflex technical schedule.

Publisher

Trans Tech Publications, Ltd.

Reference6 articles.

1. Guo Hua, Wang Yanzhong, Wang Daiwen. The reserch on reducing rail bending curve before straightening. Sichuan Metallurgy, 2002(5), pp.37-39.

2. Li Ge, Zhao Yuping, Huang Xianhai. Computer simulation of bend of rail during cooling at air after hot rolling. Journal of Plasticity Engineering, 2006, Vol. 13, No. 3, pp.74-77.

3. J Basu, S L Srimani, D S Gupta. Rail behaviour during cooling after hot rolling. The Journal of Strain Analysis for Engineering Design. 2004, Vol. 39, No. 1, pp.15-24.

4. Li Ge, Jia Baohua, Jiang Xu. Finite Element Analysis on Bending Deformation of 100-Meter U75V Steel Rail during Cooling Process before Straightening. Special Steel, 2010, 31(3), pp.14-16.

5. Song Hua, Gao Mingxin, Jia Hao, Jiang Juanjuan. Study on the phase change deformation of U75V heavy rail during the cooling process. Journal of Plasticity Engineering, 2011, Vol. 18(No. 3), pp.95-100.

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