42CrMoA钢凝固组织数值模拟
Solidification structure numerical simulation of 42CrMoA billet
丰琦 1郑鑫钰 1杨建 2杨文志 2孙彦辉1
作者信息
- 1. 北京科技大学钢铁共性技术协同创新中心,北京 100083
- 2. 湖南华菱湘潭钢铁有限公司,湖南湘潭 411101
- 折叠
摘要
为提高某厂42CrMoA钢内部质量,减少铸坯中心偏析,利用ProCAST软件对铸坯凝固组织进行模拟,研究连铸参数对凝固组织分布、等轴晶率和等轴晶区致密度的影响.结果表明,当拉速由0.8 m/min提高到1.1 m/min,等轴晶区比例增加了 5.26％;比水量由0.144 L/kg增大到0.192 L/kg,等轴晶区比例减小了 3.34％;过热度由5 ℃升高到35 ℃,等轴晶区比例减小了 7.98％.由此得出,可以通过适当提高拉速、减小二冷比水量和降低钢水过热度来降低42CrMoA钢种宏观偏析.
Abstract
In order to improve the internal quality of 42CrMoA steel in a factory and reduce the casting of billet cen-ter segregation,the ProCAST software was used to simulate the casting of billet solidification structure,and the effect of continuous casting parameters on the distribution of solidification organization,the rate of equiaxial crystal and equiaxial crystalline area density was studied.When the casting speed was increased from 0.8 to 1.1 m/min,the pro-portion of equiaxial crystal zone has increased by 5.26％;When the cooling water flows increases from 0.144 to 0.192 L/kg,the proportion of equiaxial crystal zone has decreases by 3.34％;The superheat increases from 5 to 35 ℃,and the proportion of isometric crystal zone decreases by 7.98％.It is concluded that it is possible to reduce the macroscopic segregation of 42CrMoA steel by appropriately increasing the casting speed,decreasing the amount of water in the second cooling ratio and reducing the superheat of the steel.
关键词
42CrMoA/凝固组织模拟/CAFÉKey words
42CrMoA/simulation of solidification structure/CAFÉ引用本文复制引用
出版年
2024
NETL
NSTL
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