ULTRA-HIGH-SPEED FORMING METHOD USING ELECTROPLASTICITY EFFECT
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United States of America Patent
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Nov 16, 2017
app pub date -
Dec 2, 2015
filing date -
Dec 3, 2014
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Abstract
A method for forming or deforming a workpiece at a high speed using electroplasticity effect includes: applying a first level of pulse current to the work piece to cause the electroplasticity effect and lower a flow stress of the work piece; and applying a first level of electromagnetic force to the workpiece for 150˜300 μs to form or deform the work piece in a desired shape while the flow stress of the work piece is maintained at the lowered level, wherein the first level of electromagnetic force is lower than a second level of electromagnetic force which is required to form or deform the workpiece in the desired shape without applying the first level of pulse current.
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