| 摘要 |
PROBLEM TO BE SOLVED: To prevent the casting defect in a connected part between a rim part and a disk part by dividing a mold for casting the outer side surface of the rim part in a wheel into a rim back side forming member for forming from the front side bead seat part to a back side flange part and a rim front side forming member for forming from the front side bead seat part to a first side flange and having larger volume than the rim back side forming member. SOLUTION: A side mold 30 for casting the outer side surface of the rim part in the wheel for vehicle, is divided into the rim front side forming member 70 and the rim back side forming member 80. The casting from the front side bead seat part B to the front side flange part in the wheel for vehicle is executed through a cavity surface 71 for rim front side forming member 70. The casting from the front side bead seat part B to the back side flange part, is executed through a cavity surface 82 for rim back side forming member 80. Since the vol. of the rim front side forming member 70 is larger than the vol. of the rim back side forming member 80, the cast portion through the rim front side forming member 70 is cooled quicker than the cast portion through the rim back side forming member 80.
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