| 摘要 |
PROBLEM TO BE SOLVED: To prevent generation of a shrinkage cavity by pouring a molten metal in the vicinity of an inner circumferential surface or a back side of a window part through a gate to replenish the molten metal close to a thick- walled part such as a disk and a root of a rim. SOLUTION: A stoke 62 is installed on a die base 30, and attached to a runner 62 of a lower die 31 in an internally fitted manner, and its lower end port is communicated with a second chamber 29. The runner is extended further upward in the lower die 31, and reaches an upper die 32 piercing through a window part forming part 312. A gate 63 is communicated with a tip part of the runner 62, the other end of which is opened in the vicinity of the window part forming part 312 corresponding to a back side of a wheel for vehicle, and is communicated with a rim part forming space 52 or a disk part forming space 51. Thus, the molten metal rising through the stoke 61 is fed to the rim part forming space 52, the disk part forming space 51 and a spoke part forming space 53 through the runner 62 and the gate 63.
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