Investigation of effect of electrode polarity on electrochemistry and magnetohydrodynamics using tertiary current distribution in electroslag remelting process

Abstract Transport phenomena including the electromagnetic, concentration of ions, flow, and thermal fields in electroslag remelting (ESR) process made slag, electrode, air, mold, melt pool are computed considering tertiary current distribution. Nernst–Planck equations solved bulk faradaic reactions regarded at metal–slag interface. Aiming exploring electrochemical effects on behavior ESR process, calculated field structures compared with those obtained using classical ohmic approach, namely, primary distribution whereby variations concentrations ions ignored. Also, influence earth magnetic magnetohydrodynamics slag is considered. The impact polarity whether positive, also known as direct reverse (DCRP), or negative, straight (DCSP), transport oxygen to ingot investigated. modeling results enabled us explain experimental observation higher content DCSP than that DCRP operated process.