Effects of rolling on the tooth root bending fatigue strength of sintered ferrous alloy gears

Hideshi Miura, Toshiko Osada, Naoki Suda, Kosuke Komoto, Shota Hamamoto, Shigeru Unami

Research output: Contribution to journalArticlepeer-review

2 Citations (Scopus)

Abstract

Sintered ferrous alloy gears are used in wide engineering fields. However, it is difficult for them to be applied to the parts loading at high stress levels, because their strength is poorer than that of the wrought materials. In this study, sintered ferrous alloy gears were rolled and their tooth root bending fatigue strengths were investigated. The effect of rolling conditions on the porosity distribution and hardness at tooth root, and the tooth root bending fatigue strength were determined. As the amount of stock rolled was increased, the porosity of the vicinity of the surface was decreased and the hardness was increased, and also the tooth root bending fatigue strength was increased to certain level, and then the fatigue strength was decreased. This seemed to be due to the shaving when the gear was rolled.

Original languageEnglish
Pages (from-to)344-349
Number of pages6
JournalFuntai Oyobi Fummatsu Yakin/Journal of the Japan Society of Powder and Powder Metallurgy
Volume56
Issue number6
DOIs
Publication statusPublished - Jun 2009

All Science Journal Classification (ASJC) codes

  • Mechanical Engineering
  • Industrial and Manufacturing Engineering
  • Metals and Alloys
  • Materials Chemistry

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