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A New Era Unfolds in Metal Machining

Posted October 05, 2015 12:00 AM by Engineering360 eNewsletter

Engineers at Purdue University have discovered an unknown phenomenon of metal deformation. Using high-speed microphotography during metal cutting, researchers capturedsinuous flow, that is, the folding of metal when it is being cut. The images contradict a long-held assumption that metals shear uniformly when being cut. While surprising, the research also provided a positive outcome: the team developed a simple and inexpensive way to suppress sinuous flow. The method, which involves painting metal with marking ink, could lead to faster and more energy-efficient machining.


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Join Date: Mar 2014
Posts: 370
Good Answers: 2
#1

Re: A New Era Unfolds in Metal Machining

10/06/2015 9:54 AM

Very interesting. The sinuous folding is not surprising, a form of galling at micro scale, but how a coating of micron(?) thickness on the surface of a ductile metal of mm thickness would afford such a benefit in shearing (sawing) effort reduction is almost spooky...if I am reading the Purdue article correctly.

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