| 连铸大方坯凝固传热过程的数值模拟 |
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| 引用本文： | 高文江,赵克文,沈厚发.连铸大方坯凝固传热过程的数值模拟[J].热加工工艺,2006,35(17):66-69. |
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| 作者姓名： | 高文江 赵克文 沈厚发 |
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| 作者单位： | 1. 清华大学,机械工程系,先进成形制造重点实验室,北京,100084
2. 攀枝花钢铁集团公司,四川,攀枝花,617067 |
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| 摘 要： | 基于凝固传热学基本理论，建立了大方坯凝固传热数学模型。该模型根据糊状区溶质传输和反扩散理论，基于变热物性参数，采用钢中多组元成分的百分含量计算液、固相线温度。以实际铸坯为对象，以二冷区铸坯表面实际水流密度分布和辊子接触传热为边界条件，充分考虑二冷区的四种不同的换热状况，研究连铸大方坯三维温度场。计算结果与实测温度吻合。
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| 关 键 词： | 连铸 大方坯 数值模拟 凝固 |
| 文章编号： | 1001-3814(2006)17-0066-04 |
| 收稿时间： | 2006-03-22 |
| 修稿时间： | 2006年3月22日 |
Numerical Simulation of Solidification and Heat Transfer in Continuously Cast Bloom |
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| GAO Wen-jiang,ZHAO Ke-wen,SHEN Hou-fa.Numerical Simulation of Solidification and Heat Transfer in Continuously Cast Bloom[J].Hot Working Technology,2006,35(17):66-69. |
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| Authors: | GAO Wen-jiang ZHAO Ke-wen SHEN Hou-fa |
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| Affiliation: | 1. Key Laboratory for Advanced Manufacturing by Materials Processing Technology, Department of Mechanical Engineering, Tsinghua University, Beijing 100084, China; 2.Panzhihua Iron and Steel (Group |
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| Abstract: | A mathematical heat transfer model to describe the solidification process of continuously cast bloom has been developed. The liquidus and solidus in the mushy zone was calculated based on back diffusion and a database for multi-component steel with the thermal-physical parameters depended on composition, temperature and solid fraction. Three-dimensional temperature distribution and solid fraction in a bloom were predicted with complicated boundary heat transfer conditions which involve real nozzle spray flux and individual roll contact in the secondary cooling region of the caster. The calculated results agree well with measured values. |
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| Keywords: | continuous casting bloom numerical simulation solidification |
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