METHOD FOR INSTALLING SAND CORE FOR CASTING IN MOLD AND SAND CORE FOR CASTING

摘要

[PROBLEMS] To prevent a sand core from being damaged, cracked, nor displaced even if a mold is deformed by thermal expansion when the core is installed in the mold. [MEANS FOR SOLVING PROBLEMS] A cylindrical projection (14) is formed on the upper surface of the core print part (6h) of the sand core (6) so that, when a slide mold (3) is slid in a mold clamping direction, the slidable contact part (15) of the holding recessed part (13) of the slide mold (3) is brought into slidable contact with the projection (14) to hold the projection (14) while scraping off a part of the sand of the projection. A recess (16) for recovering the scraped off sand is formed in the upper surface of the core print part (6h) adjacent to the projection (14). The width of the recess (16) is formed larger than the diameter of the projection (14) in the longitudinal direction. The projection (14) may be formed in a prism or semi-cylindrical shape.