Effect of Ultra Shot Peening on Contact Surface Strength

Author:  Watanabe, Hattori, Handa, Yoshida, Taki, Duchazeau
Source:  Conf Proc: ICSP-9 (pg 179-184)
Doc ID:  2005069
Year of Publication:  2005
Authors: Y. Watanabe, K. Hattori, M. Handa, N. Yoshida, T. Taki, J-M Duchazeaubeneix, N. Hasegawa ABSTRACT For carburized gear, shot peening treatment is widely recognized for improvement of bending fatigue strength. However the effect of shot peening on tooth surface strength gears have not been clarified due to complicated mechanism. On the other hand, recently, Ultrasonic Shot Peening (USP) technology was developed by SONATS, France. The main characteristics of USP could be the smooth surface after operating compared to the conventional shot peening (CSP). In this study, roller fatigue test using a disk machine with rolling and sliding was carried out. As a result, surface strength of roller is deteriorated by shot peening treatment. But at the comparison between CSP and USP, the strength of USP would be remarkably higher than CSP.

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