| 连铸坯凝固过程热力耦合有限元模拟 |
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| 引用本文： | 陈永,罗歆,沈厚发.连铸坯凝固过程热力耦合有限元模拟[J].钢铁,2009,44(3):36-0. |
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| 作者姓名： | 陈永 罗歆 沈厚发 |
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| 作者单位： | 1.东北大学材料与冶金学院， 辽宁 沈阳 110004；2.攀枝花钢铁研究院材料研究所， 四川 攀枝花 617000；3.清华大学机械工程系， 北京 100084 |
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| 摘 要： | 以铸坯和结晶器之间的间隙热阻为纽带，考虑保护渣凝固对接触热阻和渣膜热阻的影响，建立了连铸结晶器与铸坯热力耦合模型并编写了相应的有限元仿真程序。模型预测的坯壳厚度和实验结果吻合良好，两者差值≤2 mm。应用模型分析了大方坯连铸结晶器内的传热过程和坯壳的应力分布。结果表明，随着拉速提高，凝固坯壳厚度减薄，铸坯产生角部裂纹的趋势增加。
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| 关 键 词： | 大方坯连铸 结晶器 传热 热 力变形 有限元法 |
Numerical Simulation on Thermo-Mechanical Coupling in Bloom Mold by Finite Element Method |
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| CHEN Yong,LUO Xin,SHEN Hou-fa.Numerical Simulation on Thermo-Mechanical Coupling in Bloom Mold by Finite Element Method[J].Iron & Steel,2009,44(3):36-0. |
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| Authors: | CHEN Yong LUO Xin SHEN Hou-fa |
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| Affiliation: | 1.School of Materials and Metallurgy, Northeastern University, Shenyang 110004, Liaoning, China;2.Department of Material Research, Panzhihua Iron and Steel Research Institute, Panzhihua 617000, Sichuan, China; 3. Department of Mechanical Engineering, Tsinghua University, Beijing 100084, China |
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| Abstract: | A thermo-mechanical finite element model was established to analyze the heat transfer from mold to strand and stress distribution in strand based on the air gap resistance between solidified shell and mold by considering the influence of the mold flux on the thermal resistance among the strand,the flux film and the mold.The calculated strand shell thicknesses agreed well with the measured with a difference within 2 mm.The heat transfer in the mold and stress distribution in the bloom at different casting sp... |
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| Keywords: | continuous bloom casting mold heat transfer thermo-mechanical deformation finite element method |
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