| 递温镁合金板轧制的数值仿真和验证实验 |
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| 引用本文： | 张丁非,戴庆伟,方霖,张钧萍.递温镁合金板轧制的数值仿真和验证实验[J].中国有色金属学报,2011,21(1). |
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| 作者姓名： | 张丁非 戴庆伟 方霖 张钧萍 |
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| 作者单位： | 重庆大学,材料科学与工程学院,重庆,400030;重庆大学,国家镁合金材料工程技术研究中心,重庆,400044 |
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| 基金项目： | 国家重点基础研究发展计划资助项目，国家"十一五"科技支撑计划重点资助项目，重庆市科技攻关重点资助项目，国家杰出青年科学基金资助项目 |
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| 摘 要： | 对镁合金板材轧制过程的热量变化方程进行推导,并用有限元方法分析此热力耦合过程,并对仿真结果进行实验验证.结果表明:板材在轧制过程中有较大的温度变化,轧制过程板料的温度变化主要是由变形产热、摩擦生热和板料-轧辊热传导、以及与环境的传热情况决定,并且受板和轧辊间温度差的影响;随着板温度的下降,轧制力和等效应力线性增加,最大轧制力是最小轧制力的3倍;当温度降到210 ℃,等效应力达到160 MPa时,板料出现边裂缺陷,达到轧制成型极限;板料较佳轧制温度应高于210 ℃.
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| 关 键 词： | 镁合金 轧制 有限元 温度梯度 |
Simulation and confirmatory experiment on rolling of magnesium alloy sheets with temperature gradient |
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| ZHANG Ding-fei,DAI Qing-wei,FANG Lin,ZHANG Jun-ping.Simulation and confirmatory experiment on rolling of magnesium alloy sheets with temperature gradient[J].The Chinese Journal of Nonferrous Metals,2011,21(1). |
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| Authors: | ZHANG Ding-fei DAI Qing-wei FANG Lin ZHANG Jun-ping |
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| Affiliation: | ZHANG Ding-fei 1.2,DAI Qing-wei 1.2,FANG Lin 1.2,ZHANG Jun-ping 1.2 (1.College of Materials Science and Engineering,Chongqing University,Chongqing 400044,China,2.National Engineering Research Center for Magnesium Alloys,China) |
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| Abstract: | The quantity change equation of heat during the rolling of magnesium alloy was derived,and the finite element method was used to analyze the thermal-mechanical process.The simulation results were proved by confirmatory experiments.The results show that,there is a great temperature change in the rolled sheet,and the temperature change depends upon the plastic deformation heat,friction heat and heat transfer between sheet and roller,sheet and environment.The temperature difference between the sheet and roller... |
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| Keywords: | magnesium alloy rolling finite element analysis temperature gradient |
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