| 摘要 |
PROBLEM TO BE SOLVED: To provide a component with apertures by casting in which post-working can be omitted to the utmost, and its manufacturing method. SOLUTION: A mold of the component with the apertures is formed at accuracy on the basis of a prescribed pitch of a base material by casting. Resin sand in which 2% or 5% of a thermosetting resin is dispersed and mixed to silica sand of fine particles is filled inside the mould so as to come into contact with the surface of the mold. The resin is thermally hardened by heating at a part contacting with the surface of the mold. A female shell mold of the base material in which a core corresponding to a bolt hole and a variant slot is formed inside is composed. A first mould is fitted to the female shell mold by aligning a flat mold face to an open face of the female shell mold in a state that the mold is blanked. The base material of the component with the apertures is formed inside the female shell mold by casting. COPYRIGHT: (C)2004,JPO
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