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《Materials for Mechanical Engineering》 2015-09
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Finite Element Simulation on Temperature Field of Rolled-Piece During Whole Rolling Process of U71Mn Steel Heavy Rail

TAN Hai-lin;LAI Chun-ming;NIE Hui-wen;ZHOU Jia-lin;LEI Bo-rong;WANG Jun;Hunan Chemical Vocational Technology College;Key Laboratory for Ferrous Metallurgy and Resources Utilization of Ministry of Education,Wuhan University of Science and Technology;Wuhan Iron and Steel Co.Ltd;  
A thermo-mechanical coupled 3Dfinite element simulation was carried on the whole rolling passes of U71 Mn heavy rail.The model of the rolled-piece was established by extracting and stretching the middle crosssection grid,and the temperature data were loaded according to the corresponding relations of nodes positions before and after.The infrared thermometer was used to carry out the online temperature measurement of the rolled-piece surface and the results were compared with the simulated ones.The results show that the temperature distribution of the rail cross-section was extremely complex because of its irregular shape.As the rolling progress went on,temperature at the surface of the rolled-piece especially corners dropped heavily,temperature raised first and then declined at the heart of rolled-piece,there formed two high temperature area eventually at the middle of the rail head and base.The measured temperature was consistent with the simulated one,this proved the validity of the model.
【CateGory Index】: TG335
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