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《Journal of Central South University(Science and Technology)》 2007-04
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Numerical simulation of influence of process parameters on aluminum plate’s temperature drop during hot rolling

HE Yu-hui1,LIU Yi-lun1,DENG Gao-chao2,KANG Yu-hua1,CHEN Dai-lun2(1.School of Mechanical and Electrical Engineering,Central South University,Changsha 410083,China) 2.CHINALCO-SWA Co.Ltd.,Chongqing 401326,China)  
A two-dimensional FEM model for aluminum plate hot rolling simulation was set up based on software MSC.Marc and the 1××× Al-alloy hyperthermia constitutive equation was obtained by experimental research.The temperature variations during strip hot rolling was analyzed by thermo-mechanical coupled analytical method.The influence of process parameters on the temperature drop during strip hot rolling was investigated using orthogonal experimental design.The simulation results show that the heat exchange coefficient’s effect on temperature drop is the biggest,the rolling speed’s effect the second,the tapping temperature’s effect is small,and the environment temperature’s effect is the least.With the increase of heat exchange coefficient,the temperature drop increases.For example,while the equivalent heat transfer coefficient enhances from 20 kW/(m2.K) to 60 kW/(m2.K),the drop increases progressively to 38.1℃ from 18.3℃.With the increase of rolling speed,the temperature drop diminishes and the relationship between the drop and the rolling speed displays the linearity relation no longer.While the rolling speed exceeds 2 m/s,the variation of heat drop gradually tends to become gentle.The tapping temperature should be at lower value for the reduction of energy when working out rolling directive rules within a rational range,the effect that environment temperature has on the temperature drop can be ignored under the condition of regular technical standing time.
【Fund】: 教育部科学技术研究重点项目(106123)
【CateGory Index】: TG339
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