No.1016 2018インダストリ特集号 寿命向上と省資源化を実現する軸受用中炭素鋼の開発 |
| カテゴリー | 論文 |
|---|---|
| 筆者 | 研究開発本部 材料研究部 金谷康平 三上 剛 佐田 隆 |
| 要旨 | 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. |
| キーワード | rolling bearing, rolling contact fatigue, retained austenite, precipitate, resource-saving |
| 関連タグ |
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