| 摘要 |
PURPOSE:To reduce the production cost and to improve working efficiency by disposing a water cooled mold to the outside periphery of a core material which is perpendicularly set and heating the outside surface of the core material while pouring a molten metal into the space between the core material and the water cooled mold thereby melting and heating the core material. CONSTITUTION:The water cooled mold 5 is disposed apart at a specified space to the outside peripheral part of the core material 1 which is perpendicularly set on a stand 14 and a refractory flask 9 is attached onto the same. A heating coil 6 is then set to the outside periphery of the flask 9 and a preheating coil 7 to the periphery of the core material 1. The bottom end of the core material 1 is first set in the water cooled mold 5 and the coils 6, 7 are energized, then the molten metal to be formed as a cladding metal 2 is poured into the flask 9. While the core material 1 is heated to a prescribed temp., the core material is lowered and an ingot clad over the entire surface is produced. The ingot is rolled to a desired sheet thickness. Since the entire surface in the peripheral direction is simultaneously clad, the cost is reduced and the working efficiency is improved.
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