Surface fatigue lives of case-carburized gears with an improved surface finish

被引：49

作者：

Krantz, TL ^{[1
]}

Alanou, MP

Evans, HP

Snidle, RW

机构：

[1] USA, Res Lab, Glenn Res Ctr, Cleveland, OH 44135 USA

[2] Cardiff Univ, Cardiff CF24 3TA, S Glam, Wales

来源：

JOURNAL OF TRIBOLOGY-TRANSACTIONS OF THE ASME | 2001年 / 123卷 / 04期

关键词：

D O I：

10.1115/1.1387036

中图分类号：

TH [机械、仪表工业];

学科分类号：

0802 ;

摘要：

Previous research provides qualitative evidence that an improved surface finish can increase the surface fatigue lives of gears. To quantify the influence of surface roughness on life, a set of AISI 9310 steel gears was provided with a near-mirror finish by superfinishing. The effects of the superfinishing on the quality of the gear tooth surfaces were determined using data from metrology profilometry, and interferometric microscope inspections. The superfinishing reduced;he roughness average by about a factor of 5. The superfinished gears were subjected to surface fatigue testing at 1.71 GPa (248-ksi) Hertz contact stress, and the data were compared with the NASA Glenn gear fatigue data base, The lives of gears with superfinished teeth were about four times greater compared with the lives of gears with ground teeth but with otherwise similar quality.

引用

页码：709 / 716

页数：8

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