To provide a method for manufacturing an inexpensive and lightweight aluminum wheel capable of solving a problem that the structure of a rim portion of the cast aluminum wheel is coarse and the strength thereof is weakened, and each portion can be thin-walled by enhancing the strength of a spoke portion with cyclic loads applied thereto.
The method for manufacturing the aluminum wheel comprises a step (flow forming) of repeating the rolling a plurality of times in which a wheel stock 1 is rotated, a rolling roll 3 is pressed against an outer circumference 1b of a rim stock, and moved from a flange 1h side to an inner rim 1c side. The aluminum wheel manufacturing method also comprises a step (roller burnishing) of pressing a roller 4 against a spoke surface 1j, a spoke inner surface 1k, a rim outer surface 1m and a rim inner surface 1g while rotating the stock wheel 1, and moving the roller while performing local deformation to press each surface.
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