Electrochemical Spark Machining (ECSM) is applicable to machine the materials which are non-conducting. The present research work extended the application area of ECSM process from non-conducting materials to semiconducting materials i.e. silicon carbide (SiC). In order to enhance material removal rate (MRR) and to reduce the entrance oversize (OS) as well as surface roughness (SR), the magneto-hydrodynamic (MHD) convection approach is utilized. The magnetic field (MF) produces Lorentz forces during electrolysis process. This MF assisted travelling-wire electrochemical spark machining (TW-ECSM) process provides better flushing in narrow gap between work material and tool electrode by clearing the zone from debris particles to obtain a stable spark. It is evident from results that presence of magnetic field improved MRR from 19.15% to 200% and reduced SR and OS from 16.86% to 48.58% and from 11.37% to 21.27% respectively.

电化学火花加工（ECSM）适用于加工非导电材料。本研究工作将ECSM工艺的应用领域从非导电材料扩展到了半导电材料即碳化硅（SiC）。为了提高材料去除率（MRR）并减少入口过大（OS）以及表面粗糙度（SR），使用了磁流体动力学（MHD）对流方法。磁场（MF）在电解过程中产生洛伦兹力。这种MF辅助的行线式电化学火花加工（TW-ECSM）工艺可通过清除碎屑颗粒区域以获得稳定的火花，从而在工作材料与工具电极之间的狭窄间隙中更好地冲洗。从结果可以明显看出，磁场的存在使MRR从19提高。