|About this Abstract
||Liquid Metal Processing & Casting Conference (LMPC 2019)
||Liquid Metal Processing & Casting
||Effect of Vacuum on Oxygen Control during Electroslag Remelting of H13 Die Steel
||Xuechi Huang, Baokuan Li, Zhongqiu Liu
|On-Site Speaker (Planned)
In order to decrease total oxygen content, vacuum electroslag remelting is developed. Vacuum refining is supposed to be conductive to deep degassing in steelmaking process, such as carbon monoxide. A transient model coupling the magnetohydrodynamic flow and heat transfer was therefore proposed to investigate the effect of vacuum on oxygen control during electroslag remelting process of H13 die steel. Oxygen transfer in ESR under Ar gas atmosphere and vacuum condition was discussed. A kinetic model based on the thermodynamic analysis was established to predict the thermochemical reaction rates. The result shows that the ingot remelted under vacuum condition has the lowest oxygen content, which indicates the carbon deoxidation occurs. Besides, the less heat loss under vacuum condition leads to a higher remelting rate, which shortens the reaction time that oxygen transfers from slag to steel. The calculated results agree well with the experiments.
||Definite: At-meeting proceedings