| 连铸异型坯凝固过程的数值模拟 |
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| 引用本文： | 娄娟娟,包燕平,刘建华,孙维,杜松林,黄社清.连铸异型坯凝固过程的数值模拟[J].北京科技大学学报,2005,27(2):173-177. |
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| 作者姓名： | 娄娟娟 包燕平 刘建华 孙维 杜松林 黄社清 |
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| 作者单位： | 1. 北京科技大学冶金与生态工程学院,北京,100083
2. 马鞍山钢铁股份有限公司,马鞍山,243003 |
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| 基金项目： | 国家经贸委科技攻关项目 |
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| 摘 要： | 为了解决连铸异形坯的表面及内部裂纹问题,以实测异形坯连铸工艺参数作边界条件,采用有限元方法,利用ANSYS商业软件对铸坯的凝固发展过程进行了数值模拟,模拟结果与实测铸坯表面温度吻合.计算结果表明,对于SS400异型坯,在当前的工艺条件下,仅有圆角处的表面温度在二冷区中前段,温度处于高温塑性区,铸坯的其他部位表面温度均落在相应钢种的低温脆性区.因此二冷区可以进一步采用弱冷方式,使异型坯在二冷段和矫直辊前的表面温度处于高温塑性区.
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| 关 键 词： | 异型坯 连铸 凝固 二次冷却 数值模拟 连铸异型坯 凝固过程 数值模拟 beam continuously cast processing thermal simulation 矫直辊 二冷段 脆性区 低温 塑性区 高温 铸坯表面温度 冷区 圆角 工艺条件 模拟结果 计算 |
| 修稿时间： | 2004年11月10日 |
Numerical simulation of thermal processing in continuously cast beam blank |
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| LOU Juanjuan,Bao Yanping,LIU Jianhua,SUN Wei,Du Songlin,Huang Sheqing.Numerical simulation of thermal processing in continuously cast beam blank[J].Journal of University of Science and Technology Beijing,2005,27(2):173-177. |
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| Authors: | LOU Juanjuan Bao Yanping LIU Jianhua SUN Wei Du Songlin Huang Sheqing |
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| Abstract: | The solidification in a beam blank was numerically simulated by using ANSYS commercial software in order to analyze surfacal and internal cracks in the beam blank. The boundary conditions were based on measured technical parameters in practical production. The simulated result is in accordance with the measured surface temperature of the beam blank. It is shown that the surfacal temperature of SS400 beam blank is in the brittleness temperature zone except that of the fillet under the present condition. In order to make the surface temperature of the beam blank into the plastic temperature zone before it goes into the straightening zone, it is necessary to weaken the intensity of secondary cooling. |
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| Keywords: | beam blank continuous casting solidification second cooling numerical simulation |
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