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金属学报  2010, Vol. 46 Issue (1): 91-96    
  论文 本期目录 | 过刊浏览 |
连铸二冷区铸坯展宽现象的黏弹塑性分析
付建勋1;2);李京社1);张慧2)
1) 北京科技大学冶金与生态工程学院; 北京 100083
2) 中国钢研集团连铸技术国家工程研究中心; 北京 100081
VISCOELASTIC-PLASTIC ANALYSIS OF BROADENING OF SLAB IN THE SECONDARY COOLING ZONE OF CONTINUOUS CASTING
FU Jianxun1;2); LI Jingshe1); ZHANG Hui2)
1) School of Metallurgical and Ecological Engineering; University of Science and Technology Beijing; Beijing 100083
2) National Engineering Research Center of Continuous Casting Technology; China Iron & Steel Research Institute Group; Beijing 100081
引用本文:

付建勋 李京社 张慧. 连铸二冷区铸坯展宽现象的黏弹塑性分析[J]. 金属学报, 2010, 46(1): 91-96.
, , . VISCOELASTIC-PLASTIC ANALYSIS OF BROADENING OF SLAB IN THE SECONDARY COOLING ZONE OF CONTINUOUS CASTING[J]. Acta Metall Sin, 2010, 46(1): 91-96.

全文: PDF(992 KB)  
摘要: 

通过在商业软件MSC.Marc基础上二次开发, 建立了黏弹塑性三维热-力耦合有限元模型, 模拟铸坯在二冷区的展宽状况. 结果显示: 铸坯的展宽主要产生于二冷区的前段, 在前 6个扇形段, 铸坯的目标展宽率有逐渐增加的趋势; 铸坯的展宽与厚度方向上的鼓肚密切相关; 数值模拟使用的黏弹塑模型揭示铸坯展宽规律与铸坯实际变形相符, 铸坯展宽是坯壳在钢液芯静压力作用下发生黏弹塑变形的结果.

关键词 连铸 板坯二冷区展宽热力耦合 黏弹塑性    
Abstract

The 3D viscoelastic-plastic thermal-mechanically coupled finite element model was established by a commercial software MSC.Marc on the basis of secondary development, and used to simulate the situation of slab's broadening in the secondary cooling zone. The results showed that the slab's broadening mainly emerged in the former segments of the secondary cooling zone, and the broadening rate has a gradually increasing trend from the first segment to the sixth segment. The broadening of slab has a close relationship with bulging along the thickness direction. The results simulated by using viscoelastic-plastic model revealed that the law of the slab's broadening is excellent agreement with the actual deformation. The broadening of slab is the result of viscoelastic-plastic deformation of the slab shell under the pressure of core of molten steel.

Key wordscontinuous casting    slab    secondary cooling zone    broadening    thermal-mechanical couple    viscoelastic-plasticity
收稿日期: 2009-07-20     
ZTFLH: 

TF777.7

 
基金资助:

国家“十一五”科技支撑计划资助项目2006BAE03A04

作者简介: 付建勋, 男, 1969年生, 副教授, 博士生

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