Steel part and method of manufacturing the same

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United States of America Patent

PATENT NO 10053747
APP PUB NO 20170016083A1
SERIAL NO

15124453

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Abstract

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A surface of a steel material cut to a desired shape and carbonitrided is heated by excitation and thereafter repeatedly heated/cooled a predetermined number of times, such that an ultrafine crystal layer is formed immediately under the surface of the steel material and at least a predetermined number of cracks are formed under the formed ultrafine crystal layer, thereby enabling to increase toughness of the surface or immediately thereunder and enhance tenacity and inhibiting growth of cracks.

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Patent Owner(s)

  • HONDA MOTOR CO. LTD.

International Classification(s)

Inventor(s)

Inventor Name Address # of filed Patents Total Citations
Matsumoto, Kenji Wako, JP 325 4629

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