| 大扁锭凝固过程模拟及缩孔优化 |
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| 引用本文： | 谢朝阳,张炯明,胡波,吴苏州,罗衍昭,肖超平,杨锦.大扁锭凝固过程模拟及缩孔优化[J].北京科技大学学报,2011,33(1):11-16. |
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| 作者姓名： | 谢朝阳 张炯明 胡波 吴苏州 罗衍昭 肖超平 杨锦 |
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| 作者单位： | 谢朝阳,张炯明,吴苏州,罗衍昭,肖超平,杨锦,XIE Zhao-yang,ZHANG Jiong-ming,WU Su-zhou,LUO Yan-zhao,XIAO Chao-ping,YANG Jin(北京科技大学冶金与生态工程学院,北京,100083);胡波,HU Bo(中冶连铸技术工程股份公司,武汉,430080) |
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| 摘 要： | 对某钢厂28.7t钢锭凝固过程进行测温,并用有限元方法模拟该钢锭凝固过程温度场和凝固场分布.结果表明:温度模拟值与现场测量值吻合很好,证明模拟具有较高的准确性和可靠性;凝固初期,钢锭底部和保温冒与钢锭模连接处凝固较快;52min时,绝热板与钢锭间已形成一定气隙;前3h,钢锭侧面凝固顺序由模壁向钢锭中心平行推进;凝固后期较凝固前期凝固速度快;热电偶测得,保温冒中心凝固时间为428min,钢锭本体中心顶部凝固时间为365min,冒部全凝时间大于本体全凝时间的15%,有利于控制一次缩孔只存在于冒部.通过模拟将浇注温度由1543℃降低到1533℃,不但不影响保温帽钢液对本体的补缩作用,还可以使缩孔减小6mm,有利于提高钢锭质量.
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| 关 键 词： | 钢锭 凝固过程 温度分布 缩孔 模拟 有限元法 |
Solidification simulation and shrinkage optimization of big flat ingots |
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| XIE Zhao-yang,ZHANG Jiong-ming,HU Bo,WU Su-zhou,LUO Yan-zhao,XIAO Chao-ping,YANG Jin.Solidification simulation and shrinkage optimization of big flat ingots[J].Journal of University of Science and Technology Beijing,2011,33(1):11-16. |
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| Authors: | XIE Zhao-yang ZHANG Jiong-ming HU Bo WU Su-zhou LUO Yan-zhao XIAO Chao-ping YANG Jin |
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| Affiliation: | XIE Zhao-yang1),ZHANG Jiong-ming1),HU Bo2),WU Su-zhou1),LUO Yan-zhao1),XIAO Chao-ping1),YANG Jin1)1)School of Metallurgical and Ecological Engineering,University of Science and Technology Beijing,Beijing 100083,China2)China Casting Technology Engineering Co.,Wuhan 430080,China |
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| Abstract: | The temperature of a steel ingot of 28.7t was measured during solidification and the temperature field and solidification process of the steel ingot were simulated by a finite element method.It is shown that the simulated values of the temperature field agree well with the measured data,indicating that this simulation is accurate and reliable.At the initial stage of solidification,the bottom of the steel ingot and the connection zone between the ingot mold and the insulating riser solidify faster.At 52min,a... |
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| Keywords: | ingots solidification temperature distribution shrinkage simulation finite element method |
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