抄録
Polycrystalline diamond (PCD) is widely used to fabricate cutting tools. In the electrical discharge machining (EDM) of PCD, thermal damage, such as graphitization of diamond grains, is a critical problem. In this study, we performed EDM of PCD using rotary cupronickel electrodes and investigated the structural changes of PCD by Raman spectroscopy. It was found that the PCD surfaces machined using the rotary cupronickel electrodes were smoother than those in conventional EDM. The results also showed that diamond graphitization decreased when electrical discharge energy decreased and/or when feed rate increased. In order to reduce graphitization of diamond, we proposed a dry EDM finishing method for PCD. Very low surface roughness and low thermal damage were successfully achieved.
| 本文言語 | English |
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| ホスト出版物のタイトル | Proceedings of the 8th International Conference on Leading Edge Manufacturing in 21st Century, LEM 2015 |
| 出版社 | Japan Society of Mechanical Engineers |
| 出版ステータス | Published - 2015 10月 18 |
| イベント | 8th International Conference on Leading Edge Manufacturing in 21st Century, LEM 2015 - Kyoto, Japan 継続期間: 2015 10月 18 → 2015 10月 22 |
Other
| Other | 8th International Conference on Leading Edge Manufacturing in 21st Century, LEM 2015 |
|---|---|
| 国/地域 | Japan |
| City | Kyoto |
| Period | 15/10/18 → 15/10/22 |
ASJC Scopus subject areas
- 産業および生産工学