| 摘要 |
A plurality of superimposed ingot molds are provided, which have open ends and differ in at least one inside transverse dimension. A slag layer is provided in said ingot molds. Electrode means which consist of a metal from which an ingot is to be formed are maintained dipped in said slag layer in each of said ingot molds for a period of time while electric current is passed through said electrode means to generate heat and thus fuse down said electrode means in each of said ingot molds to form molten metal therein. Said molten metal is solidified in each of said ingot molds, whereby an integral, rigid ingot is formed.
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