| 摘要 |
PROBLEM TO BE SOLVED: To provide an apparatus for manufacturing a core for casting and manufacturing method therefor, having excellent productivity, and easily manufacturing even a hollow core. SOLUTION: The manufacturing apparatus is provided with a molten salt holding furnace and a mold arranged above the furnace. The molten salt holding furnace has a closed vessel and a crucible arranged in the closed vessel. A cavity in the mold is communicated with a stoke part arranged in the crucible, and a pressurizing means for pressurize-controlling the pressure in the closed vessel and an electric resistance measuring means for measuring the electric resistant value between the mold and the molten salt existing in the crucible, are provided. COPYRIGHT: (C)2007,JPO&INPIT
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