| 摘要 |
PURPOSE:To prevent condensed segregation and reverse V segregation by charging molten slag on the molten steel surface, dipping electrodes is molten slag while keeping apart from another electrode by more distance than radius of the electrode, conducting the current, heating and solidifying from the bottom part. CONSTITUTION:The molten steel 6 is poured into a mold 4 set on a base plate 2 and the molten slag 8 is charged on the surface of the molten steel 6. After charging the molten slag 8, two electrodes for remelting are dipped. The distance between electrodes 10 is made to be more than the radius of electrode 10, in order to prevent arc between the electrodes or the mold 4 and electrodes, and induce suitable slag flowing around the electrodes 10. The prescribed power is conducted in order to induce the suitable slag 8 flowing and melt the electrodes 10. By occurring a flow of molten slag 8 around the electrodes 10, uniformly heating the top part of molten steel 6 and executing grain oriented solidification, the reverse V segregation at the side face is prevented, and condensing of the molten steel is diluted at the top part and the grain oriented solidified ingot having only a little cut-off part is obtd.
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