Method of making a wheel rim

Details Method of making a wheel rim Method of making a wheel rim

B - Operations, Transporting

60

B

301/98

B60B 21/00 (2006.01) B21H 1/10 (2006.01) B21K 1/38 (2006.01)

Patent

CA 1153041

ABSTRACT OF THE DISCLOSURE 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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