| タイトル | Bearing and gear steels for aerospace applications |
| 本文（外部サイト） | http://hdl.handle.net/2060/19900011075 |
| 著者（英） | Zaretsky, Erwin V. |
| 著者所属（英） | NASA Lewis Research Center |
| 発行日 | 1990-03-01 |
| 言語 | eng |
| 内容記述 | Research in metallurgy and processing for bearing and gear steels has resulted in improvements in rolling-element bearing and gear life for aerospace application by a factor of approximately 200 over that obtained in the early 1940's. The selection and specification of a bearing or gear steel is dependent on the integration of multiple metallurgical and physical variables. For most aerospace bearings, through-hardened VIM-VAR AISI M-50 steel is the material of preference. For gears, the preferential material is case-carburized VAR AISI 9310. However, the VAR processing for this material is being replaced by VIM-VAR processing. Since case-carburized VIM-VAR M-50NiL incorporates the desirable qualities of both the AISI M-50 and AISI 9310 materials, optimal life and reliability can be achieved in both bearings and gears with a single steel. Hence, this material offers the promise of a common steel for both bearings and gears for future aerospace applications. |
| NASA分類 | MECHANICAL ENGINEERING |
| レポートNO | 90N20391
E-5300
NAS 1.15:102529
NASA-TM-102529 |
| 権利 | No Copyright |
| URI | https://repository.exst.jaxa.jp/dspace/handle/a-is/138559 |
