Patent ID: 6435258
Filing Date: 2002-08-20
Classification: B22D

Abstract:
A mold-cooling apparatus for cooling a mold when casting is performed, said apparatus comprising an insert member inserted into a hole of a core pin incorporated into a cavity of said mold, a helical cooling passage formed on an outer circumferential surface of said insert member for allowing cooling water to flow therethrough, and a helical land portion of said insert member formed adjacent said helical cooling passage, said land portion being disposed in contact with an inner wall surface of said core pin, thereby forming said helical cooling passage-between said insert member and said inner wall surface of said core pin, wherein a start point of said helical cooling passage is set and apportioned in a predetermined direction corresponding to a wall thickness of a cast product having a shape defined by said cavity, wherein a greater volume of cooling water flows on a side of said insert member facing in said predetermined direction.