Aluminum wheels and methods of manufacture
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United States of America Patent
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Aug 23, 2022
Grant Date -
Jul 18, 2019
app pub date -
Dec 13, 2018
filing date -
Jan 12, 2018
priority date (Note) -
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status (Latency Note)
Importance
Abstract
Aluminum wheels include a rim and a disc having a mounting portion. The mounting portion includes an inner mounting face and an outer mounting face. The mounting portion also includes a coarse grain region and a fine grain region. The coarse grain region can be adjacent, and at least partially form, one of the inner mounting face or the outer mounting face. The coarse grain region includes aluminum alloy grains of a first average grain length that is greater than 1 mm. The fine grain region extends between the coarse grain region and the other of the inner mounting face or the outer mounting face. The fine grain region includes aluminum alloy grains of a second average grain length that is less than 0.5 mm.
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