摘要
用Multi-physics Comsol软件对工业硅真空感应精炼过程的温度场进行了二维数值模拟和分析,定量研究了精炼过程熔池中温度场动态分布特征。结果表明:精炼过程中熔池中存在不均匀的温度场,温度梯度随时间和空间位置发生变化,在保温阶段熔池底部和表面温差最大值为382 K。精炼过程中硅料熔化前后的温度分布明显不同,硅料熔化后电磁搅拌形成的热流场和熔池表面向外的热辐射对精炼过程熔池中温度分布产生了重要影响。
A numerical mode/of the thermal process for metallurgical-grade silicon melting in vacuum induction furnace was developed and a two-dimension numerical simulation for temperature was carried out by finite element method（FEM） with software Multi-physics Comsol. The changeable process of temperature field distribution characteristics in the graphite erucible was analyzed. The quantitative research results show that the temperature field is dependent on induction heating time and melting pool position and the maximum temperature gradient is 382 K in the constant temperature stage. The forced convection caused by electromagnetic stirring and the external heat radiation of the molten pool surface have significant impact on the temperature distribution of silicon melt in the vacuum induction refining.
出处
《材料热处理学报》
EI
CAS
CSCD
北大核心
2013年第8期189-194,共6页
Transactions of Materials and Heat Treatment
基金
国家自然科学基金(51066003)
关键词
工业硅
真空感应精炼
温度场
数值模拟
metallurgical-grade silicon
vacuum induction melting
temperature field
numerical simulation
