大方坯连铸坯表面夹渣热-力耦合分析
Thermal-force coupling analysis of slag entrapment on surface of continuous casting bloom
韩璇 1刘增勋 1肖鹏程 1朱立光 2丁志军 3祖衡 3霍彦朋3
作者信息
- 1. 华北理工大学冶金与能源学院,河北唐山 063210
- 2. 河北科技大学材料科学与工程学院,河北石家庄 050018
- 3. 河钢集团石家庄钢铁有限责任公司,河北石家庄 063210
- 折叠
摘要
铸坯夹渣对铸坯皮下温度、坯壳厚度、第一主应力和等效应力有着显著的影响.基于温度继承算法,运用ANSYS有限元软件建立了钢液凝固二维瞬态导热模型,解析了夹渣对铸坯传热和应力行为.在铸坯常见的距中心1/4位置镶嵌宽10 mm深4 mm的保护渣,研究表明夹渣铸坯皮下温度平均上升60 ℃,坯壳厚度变薄3.6 mm,受到夹渣的影响第一主应力分布不均,局部变小,等效应力整体变小.
Abstract
Slag entrapment in the continuous casting bloom has a significant effect on the sub-skin temperature,shell thickness,first principal stress and equivalent stress.Based on the temperature inheritance algorithm,a two-dimen-sional transient thermal conductivity model of steel solidification was established by using ANSYS finite element software to analyze the behavior of slag entrapment on bloom heat transfer and stress.In common 1/4 position from the center of the continuous casting bloom,the 10 mm wide and 4 mm deep protective slag is usually found.The study shows that with the slag entrapment,the sub-skin temperature rises by 60 ℃ in average,the shell thickness becomes 3.3 mm,the first principal stress distribution is uneven and locally smaller,and the equivalent stress be-comes smaller.
关键词
大方坯/连铸/数值模拟/铸坯夹渣Key words
bloom/continuous casting/numerical simulation/slag entrapment引用本文复制引用
出版年
2024
NETL
NSTL
万方数据