Process for the forming of metal alloy wheel rims
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United States of America Patent
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Jun 30, 1998
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app pub date -
Sep 23, 1996
filing date -
Sep 29, 1995
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Abstract
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, its inner surface and its lateral surface in order to obtain a semi-finished work which is then heated and plastically deformed by flow forming along its lateral surface to obtain an inner edge, an outer edge and a middle portion with a defined machine allowance; the rim 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.
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