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实验证明，采用高Si含量铸铁自耗电极和含稀土氧化物的CaF2基熔渣，在直流反极性电渣重熔条件下，可制得球墨铸铁．铸铁中石墨球化现象是铁水经电化学变质处理的结果，熔渣中Mg，Ce阳离子在渣－金界面阴极区被还原进入铁水熔池，起到球化剂的作用．提高阳极区自耗电极中的Si含量，可以抑制渣中Fe阳离子的形成，有助于上述电化学还原反应的进行.这对建立新的冶金工艺技术有一定意义.
Experiments show that the use of high Si content of cast iron consumable electrodes and rare earth oxides containing CaF2-based slag, DC reverse polarity electroslag remelting conditions, ductile iron can be obtained. The phenomenon of graphite spheroidization in cast iron is the result of electrochemical modification of molten iron. The Mg and Ce cations in the slag are reduced into the molten iron bath in the cathode region of the slag-gold interface, playing the role of nodulizer. Increasing the Si content in the consumable electrode in the anode region can suppress the formation of Fe cation in the slag and contribute to the electrochemical reduction reaction, which is of great significance for establishing a new metallurgical technology.