No.1016E 2019Special Edition on Industry Development of Medium Carbon Bearing Steel Achieving Life Improvement and Resource Saving |
| Category | TECHNICAL PAPER |
|---|---|
| Author | K. KANETANI T. MIKAMI T. SADA Material R&D Dept., Research & Development Headquarters |
| Abstract | In recent years, the growing interest in protecting the global environment has given rise to a demand for saving resources in bearing manufacturing. In particular, a large amount of rare metals are added to the NiCrMo steel used to manufacture rolling bearings for industrial machinery and the like. If less rare metals were used, resourcesaving could be achieved. Furthermore, if the replacement frequency could be decreased by extending the life of the bearing, even greater resources-saving could be achieved. Increasing the amount of retained austenite on the surface is known to be an effective method of extending bearing life and, in this study, we concluded that life can be further improved by controlling the stability of retained austenite. We have developed a new rolling bearing steel which enables both reduced rare metal usage and longer bearing life by controlling the quantity and stability of retained austenite. |
| Keyword | rolling bearing, rolling contact fatigue, retained austenite, precipitate, resource-saving |
| Search tag |
Download Ranking of
ENGINEERING JOURNAL
9
Summary:4,2024
3
Summary:5,2023-4,2024