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Title: Effect Of Cavitation Shotless Peening On Fatigue Strength Of Steel Gear
Author: M. Seki, H. Soyama, M. Fujii, A. Yoshida
Source: Conf Proc: ICSP-10 Tokyo, Japan 2008
Publication year 2008
Document number: 2008052
Number of pages: 6
Abstract:
ABSTRACT
The purpose of this study is to investigate the effect of cavitation shotless peening (CSP) on the rolling contact fatigue strength of steel gears. The casehardened steel
rollers and gears treated by the CSP were fatigue-tested using a roller testing machine and a gear testing machine. The hardness and the compressive residual stress of the
test rollers and gears were increased by the CSP. The work-hardened layer due to the CSP was in a range of a depth of about 0.5mm below the surface. While, the surface
roughness of the peened rollers and gears was similar to that of the non-peened ones. In the fatigue tests, the rolling contact fatigue life of most peened rollers and gears
was longer than that of the non-peened ones. This study revealed that the rolling contact fatigue strength of steel gears was improved by the increase in surface hardness
due to the CSP.
KEY WORDS
Gear, Peening, Cavitation, Fatigue, Hardness
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This page last revised: 03/22/2010