| 摘要 |
PROBLEM TO BE SOLVED: To reduce the development of defective casting by allowing slag and oxide in a molten metal holding furnace to hardly be entrapped into the molten metal, even when the molten metal is repeatedly poured. SOLUTION: In the differential pressure casting apparatus in which a stoke is disposed almost vertically and the upper end opening part of this stoke is connected with a gate of a mold and also, the lower end opening part thereof is dipped into the molten metal in the molten metal holding furnace and this molten metal is supplied into a cavity in the mold by utilizing the pressure difference between the internal pressure in the molten metal holding furnace and the internal pressure in the cavity in the mold, the lower end opening part of the stoke is disposed at the side surface of this stoke in this stoke structure for differential pressure casting apparatus.
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