Effects of electrical discharge machining conditions on thermal damage in polycrystalline diamond

Kazunori Watanabe, Jiwang Yan

研究成果: Conference contribution

2 被引用数 (Scopus)

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
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 182015 10月 22

Other

Other8th International Conference on Leading Edge Manufacturing in 21st Century, LEM 2015
国/地域Japan
CityKyoto
Period15/10/1815/10/22

ASJC Scopus subject areas

  • 産業および生産工学

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