Method for manufacturing aluminum alloy wheel

摘要

A method is disclosed for production of a single-piece type aluminum alloy wheel. Specifically, the method includes one-piece casting by a casting means to form a disk part and a pre-rim part from a certain aluminum alloy, and spinning the pre-rim part formed from the aluminum alloy by the one-piece casting step to form a rim part of a specified shape. Preferably, the method uses gravity-type casting as the casting method by the casting step. The casting step is carried out such that the disk part is set-established horizontally in a lower part of a mold, such that thereafter the pre-rim part is set-established approximately vertically above and circumferentially centered with respect to the pre-disk part. A plurality of gates-risers are thereafter disposed circumferentially or radially on the pre-rim part. Thus, an overall high strength aluminum alloy wheel is produced with good efficiency.