Method of forming to a finished size vehicle wheels made of a he

Details Method of forming to a finished size vehicle wheels made of a he Method of forming to a finished size vehicle wheels made of a he

1985-11-26

1987-08-18

Dean, R.

Metal treatment

Compositions

Heat treating

148 127A, C22F 104

Patent

active

046875247

ABSTRACT:
An aluminum alloy wheel rim is formed to a desired finished size by pressing a sheet of aluminum alloy material to form a wheel rim having a diameter less than, but not smaller than 98.7% of, the desired finished size. The wheel rim then is subjected to a solution heat treatment operation and thereby is expanded to a diameter of a size greater than the desired finished size. The wheel rim then is positioned, while substantially at the temperature thereof when removed from the solution heat treatment, in a calibration tool in the form of two dies on a common arbor, with the dies being located to define the desired finished size. The wheel rim then is cooled to cause the rim to shrink tightly onto the dies to the desired finished size without the necessity of applying pressure to the rim.

REFERENCES:
patent: 3172787 (1965-03-01), Martenet

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