镁合金圆锭电磁悬浮连续铸造过程温度场的数值模拟
Numerical Simulation of Temperature Field during Electromagnetic Suspension Continuous Casting of Magnesium Billets
摘 要
采用有限差分法和Visual C++6.0软件建立了AZ31镁合金电磁悬浮连续铸造过程的数学模型,应用该模型对镁合金圆锭电磁悬浮连续铸造过程温度场进行了模拟,并与实际测量温度进行了比较.结果表明:该模型可以用来模拟实际铸造过程;随着悬浮剂(20%ZrB2+80%AZ31)含量的增加,悬浮铸造合金初始温度降低,冷却速率增加,凝固时间缩短.
电磁悬浮连续铸造
温度场
数值模拟
magnesium alloy
electromagnetic suspension continuous casting
temperature field
numerical simulation
Abstract
A mathematical model of the electromagnetic suspension continuous casting process for AZ31 magnesium alloy billets had been built up using Microsoft Visual C++ 6.0 software and finite difference method (FDM).The temperature field during electromagnetic suspension continuous casting of magnesium billets was simulated by the model and compared with the actual measured temperature.The results show that the model could be used to simulate the actual casting process.The initial temperature of the suspension casting alloy declined,cooling speed increased and solidifying time of billets shortened with increasing the content of suspension particles(20%ZrB2+80%AZ31).
中图分类号 TG335.1
所属栏目 物理模拟与数值模拟
基金项目 国家自然科学基金资助项目(50475157,50875031)
收稿日期 2009/4/13
修改稿日期 2010/1/15
网络出版日期
作者单位点击查看
备注邱月(1983-),男,辽宁锦州人,硕士研究生.
引用该论文: QIU Yue,ZHANG Xing-guo,HAO Hai,REN Zheng,SUI Li,QI Guo-hong. Numerical Simulation of Temperature Field during Electromagnetic Suspension Continuous Casting of Magnesium Billets[J]. Materials for mechancial engineering, 2010, 34(5): 81～85
邱月,张兴国,郝海,任政,隋里,齐国红. 镁合金圆锭电磁悬浮连续铸造过程温度场的数值模拟[J]. 机械工程材料, 2010, 34(5): 81～85
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参考文献
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【3】HAO H,MAIJER D M,WELLS M A,et al.Prediction and measurement of residual stresses/strains in a direct chill casting magnesium alloy billet[M].Warrendale,PA: TMS,2005:223-228.
【4】GODBEE H W.Thermal conductivities of MgO,AlO,and ZrO powders to 850C,II[J].Theoretical J Appl Phys,1966,37:56-65.
【5】SUNDSTROM D W.Thermal conductivity of polymers filled with particulate solids[J].J Appl Polym Sci,1972,16:3159-3167.
【6】HAMILTON R L.Thermal conductivity of heterogeneous two-component systems[J].Ind Eng Chem Fundam,1962(1):187-191.
【7】王家俊.聚酸亚胺/氮化铝复合材料的制备与性能研究[D].杭州:浙江大学,2001.
【8】HASSELMAN D H P.Effective thermal conductivity of composites with interfacial thermal barrier resistance[J].J Comp Mater,1987,21:508-515.
【9】EVERY A G.The effect of particle size on the thermal conductivity of ZnS/diamond composites[J].Acta Metall Mater,1992,40:123-129.
【10】SWARTZ E T,POHL R O.Heat transport between two surfaces in contact[J].Rev Mod Phys,1989,61:605-668.
【11】WU Y.Solidification behavior of Al-Si/SiC MMCs,during wedge-mold casting[J].Acta Metall Mater,1994,42:825-837.
【12】郭鹏,张兴国,郝海,等.AZ31镁合金圆锭连铸过程温度场的数值模拟[J].中国有色金属学报,2006,16(9):1570-1576.
【13】LI Z X,ZHENG X S,CAO Z Q,et al.Temperature simulation of EMC aluminum ingot with induced heat[J].Trans Nonferrous Met Soc China,2001,11(3):369-373.
【14】郑贤淑,王一成,金俊泽.电磁铸造大板坏半连铸过程温度场的数值模拟[J].金属学报,1999,35(8):861-864.
【15】陈海清,李华基,曹阳.铸件凝固过程数值模拟[M].重庆:重庆大学出版社,1991.
【16】HAO H,MAIJER D M,WELLS M A,et al.Development and validation of a thermal model of the direct chill casting of AZ31 magnesium billets[J].Metallurgical and Materials Transactions A,2004,35,12:3843-3854.
【17】QIU Yue,ZHANG Xing-guo,HAO Hai,et al.Temperature simulation of electromagnetic continuous casting of AZ61 magnesium billets[C]//Proceedings of the 7th Pacific Rim International Conference on Modeling of Casting and Solidification Processes.Dalian: Dalian University of Technology,2007:545-552.
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