Metal founding – Process – Shaping liquid metal against a forming surface
Patent
1993-05-28
1994-05-24
Lin, Kuang Y.
Metal founding
Process
Shaping liquid metal against a forming surface
164119, B22D 1804, B22D 2704
Patent
active
053140010
ABSTRACT:
The lower mold which forms the external side of the vehicle wheel is water-cooled by water-cooling pipes. The rib-forming portions of the upper mold which forms the internal side of the vehicle wheel are forcibly air-cooled by the air passages provided along the rib-forming portions. Since water-cooling has better cooling capacity than air-cooling, the molten material inside the cavity between the lower mold and the upper mold is solidified from the external side thereof, and no defects such as shrinkage cavities occur on the external side thereof. When the internal side is solidified, the rib portions are solidified not much later than the other portion of the internal side, thereby shortening the casting cycle time. The split molds which form the cavity for forming therein the rim portion of the vehicle wheel are opened earlier than the upper mold, at the time when the surface layer portion of the molten material in the cavity has been solidified. If the split molds are kept clamped, the clearance to be generated between the split molds and the molten material upon contraction thereof due to solidification, restricts the heat dissipation from the molten material to the split molds, resulting in retarded solidification. To the contrary, early opening of the split molds leads to accelerated solidification of the molten material due to cooling of the rim portion by the atmosphere.
Haga Yuu
Hidaka Akio
Nakabayashi Shigemitsu
Okumura Akihiro
Terajima Tsutomu
Honda Giken Kabushiki Kaisha
Lin Kuang Y.
LandOfFree
Method of casting vehicle wheel does not yet have a rating. At this time, there are no reviews or comments for this patent.
If you have personal experience with Method of casting vehicle wheel, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Method of casting vehicle wheel will most certainly appreciate the feedback.
Profile ID: LFUS-PAI-O-1966711