| 摘要 |
PROBLEM TO BE SOLVED: To provide a method and an apparatus for forming a water soluble core having excellent flow-ability, fill-ability, and improved strength with a short time cycle. SOLUTION: The method for forming a sand core by mixing casting sand with a water soluble binder so as to become slurry, and next by supplying the slurry into a die, and then by drying and forming the supplied slurry into the sand core comprises a step (a first step) for supplying the slurry state casting sand into the die from below under pressure, a step (a second step) for removing excessive moisture by turning-over the die filled with the slurry state casting sand, and then by blowing the inside of the die from above under pressure, and a step (a third step) for drying and forming the casting sand. COPYRIGHT: (C)2007,JPO&INPIT
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