LASER HARDENED CRANKSHAFT
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United States of America Patent
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May 25, 2016
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May 25, 2016
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Abstract
An automotive shaft includes a journal having a crest-to-crest contact surface area defined by and between undercut regions of the shaft, an entirety of the crest-to-crest contact surface area being laser hardened to a depth no greater than 1 mm to form a layer that does not contain unhardened portions.
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