Asymmetric rolling apparatus, asymmetric rolling method and rolled materials fabricated by using the same
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United States of America Patent
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Sep 8, 2015
Grant Date -
Oct 4, 2012
app pub date -
Nov 11, 2011
filing date -
Mar 28, 2011
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Abstract
Provided is an asymmetric rolling method including: entering a to-be-rolled material having a first surface and a second surface between a first roll and a second roll that has a greater diameter than that of the first roll and a rotary angular speed that is different from that of the first roll while the first surface and the second surface respectively contact the first roll and the second roll, followed by rolling, and entering the rolled to-be-rolled material between a third roll and a fourth roll that has a greater diameter than that of the third roll and a rotary angular speed that is different from that of the third roll while the first surface and the second surface respectively contact the fourth roll and the third roll, followed by rolling, wherein different shear stresses are applied to the first and second surfaces of the to-be-rolled material.
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