During electron beam zone melting,the stability of melt zone is essential for the material purification and the growth of single crystal. The stability of melt zone is actually a manifestation of the stability of high voltage power system in the electron beam zone melting furnace,and several factors lead to the instability of electrical parameters of high-voltage power system. Aiming at the instability phenomenon of high-voltage power system during electron beam zone melting Mo alloys,this paper analyzes th...