|About this Abstract
||2018 TMS Annual Meeting & Exhibition
||CFD Modeling and Simulation in Materials Processing
||Numerical Investigation of Oxygen Transport Behavior and Composition Changes in Protective Gas Electroslag Remelting Process
||Xuechi Huang, Baokuan Li, Zhongqiu Liu
|On-Site Speaker (Planned)
Protective gas electroslag remelting (PESR) process is an advanced technology for production of high performance alloys. The remelting atmosphere is beneficial to prevent the oxygen increase in metal by experience. In this context a transient coupled model was developed to further understand the oxygen transport behavior and the composition changes in metal and slag in PESR process. The electromagnetic phenomenon, fluid flow, heat transfer and species transport were solved simultaneously. The VOF approach was adopted to trace the slag/metal interface where the mass transport process occurs. A kinetic model based on the necessary thermodynamic relations was established to predict the mass transfer rates. The temperature distribution determined the thermodynamic equilibrium constants, and therefore affected the mass transfer rates. The process without deoxidation treatment demonstrated a slightly decreased oxygen content in final ingot. The effect of current on the mass transfer process was also discussed.
||Planned: None Selected