Influence of Shot Peening on Surface Durability of Plasma Case-Hardened Sintered Powder Metal Gears
Influence of Shot Peening on Surface Durability of Plasma Case-Hardened Sintered Powder Metal Gears
复制标题
喷丸对等离子表面硬化烧结粉末金属齿轮表面耐久性的影响
DOI：
10.1115/detc2003/ptg-48006
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发表时间：
2003
期刊：
影响因子：
--
通讯作者：
M. Seki
中科院分区：
文献类型：
--
作者：
A. Yoshida;Y. Ohue;M. Seki
为了研究喷丸对粉末冶金烧结齿轮表面耐久性的影响，对不同条件喷丸的等离子表面硬化烧结粉末金属滚轮和齿轮进行滑动滚动接触条件下的疲劳试验。通过喷丸处理，提高了滚子和齿轮的硬度、残余压应力和表面粗糙度。滚轮和齿轮的失效形式主要是剥落。失效的滚子和齿轮的主要裂纹通过滚子和齿面下方的孔隙扩展。轻微喷丸处理的滚子和齿轮的表面耐久性高于其他滚子和齿轮。而经过强喷丸处理的滚筒，由于强喷丸导致表面粗糙度增加和锐孔变形，其表面耐久性低于未喷丸滚筒。Copyright © 2003 by ASME
In order to investigate the influence of shot peening on the surface durability of sintered powder metal gears, the plasma case-hardened sintered powder metal rollers and gears shotpeened with different condition were fatigue-tested under a sliding-rolling contact condition. The hardness, the compressive residual stress and the surface roughness of the rollers and gears increased by the shot peening. The failure mode of the rollers and gears was mainly spalling. The main crack of the failed rollers and gears propagated through the pores below the roller and the tooth surfaces. The surface durabilities of the lightly shot-peened rollers and gears were higher than those of the other rollers and gears. While, the surface durabilities of the strongly shot-peened rollers are lower than that of the unpeened roller because of the increase of the surface roughness and the deformed sharp pore by the strong shot peening.Copyright © 2003 by ASME