Method of making a wheel rim
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United States of America Patent
Stats
-
Jan 29, 1980
Grant Date -
N/A
app pub date -
Feb 10, 1978
filing date -
Feb 10, 1978
priority date (Note) -
Expired
status (Latency Note)
Importance
Abstract
An improved method of making vehicle wheel rims particularly suitable for use with materials having relatively low ductility, such as aluminum, is disclosed. A circumferential drop center well is formed about the periphery of the band and work hardened so that the well material exhibits higher strength and lower ductility than the remaining band material. The strength and ductility differential between the well and band material adjacent thereto assists in confining material movement in subsequent rim forming operations and induces drawing of the rim bead seat area material.
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