A process for the forming of metal alloy wheel rims

摘要

In a process for the forming of wheel rims in metal alloy, a cast blank undergoes a cold chip removal process by cutting its central area (9), its inner surface (4) and its lateral surface (12) in order to obtain a semi-finished work (3) which is then heated and plastically deformed by flow forming along its lateral surface (12) to obtain an inner edge (17), an outer edge (18) and a middle portion (13) with a defined machine allowance; the rim (1) thus obtained undergoes another cold chip removal process by cutting in order to work it down to the required size; the latter process may be preceded by solution and age hardening heat treatments.