The Proceedings of Mechanical Engineering Congress, Japan
Online ISSN : 2424-2667
ISSN-L : 2424-2667
2012
Session ID : S111034
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S111034 Bending Fatigue Strength of Re-hardened Gears after Poor Induction Hardening
Kouitu MIYACHIKAShoichi YANAGAWANorimasa MAETAHidefumi UMADATomoaki IKUTAHideaki KATANUMATakao KOIDE
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Abstract
In some cases where there is the deterioration of the vacuum tube oscillation in the induction hardening apparatus, poor hardened gears are usually produced by the induction hardening apparatus of deteriorated vacuum tube oscillation. Such poor hardened gears may be improved by re-hardening with the induction hardening apparatus of new vacuum tube oscillation. In this paper, measurements of the profile, the hardness and the micro-structure of hardened layer and the bending fatigue test were earned out for the poor induction hardened gears and the re-hardened gears. The validity of the re-hardening treatment for the poor induction hardened gear was determined to a considerable extent.
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© 2012 The Japan Society of Mechanical Engineers
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