Hot-top type continuous casting machine for hollow billet

摘要

Provided is a hot-top type continuous casting machine for stably producing hot metal hollow billets having a high quality, which comprises:(a) a molten metal holding part fed therein with molten metal;(b) a ring mold arranged being connected to the molten metal holding part; and(c) a core inserted in the hollow mold from thereabove, and composed of a low heat-conductive upper core and a high heat-conductive lower core to be cooled by coolant circulating therethrough.