Development of a PCD Burnishing Tool and its Burnishing Performance
At a Glance
Section titled āAt a Glanceā| Metadata | Details |
|---|---|
| Publication Date | 2016-10-01 |
| Journal | Materials science forum |
| Authors | Manabu Iwai, Masahide Yamada, Peter Chen, Bear Lin, Kiyoshi Suzuki |
| Institutions | Toyama Prefectural University |
Abstract
Section titled āAbstractāIn this study, a polycrystalline composite diamond (PCD) was adopted instead of a single crystal diamond as a burnishing tool. At first, EDM machinability was compared between two kinds of PCDs (10Ī¼m grain size), i.e. standard PCD (S-PCD) and electrically conductive PCD (EC-PCD (which was made of boron doped diamond particles). EDM machining time to make a hemispherical shape was 17 minutes for EC-PCD and 37 minutes for S-PCD. Further experiments were conducted with EC-PCD of different grain sizes such as 2Ī¼m and 5Ī¼m. As a result, the smaller the grain size of EC-PCD the higher the machining efficiency was. Surface roughness values of the EC-PCD after finish EDM were R z=1.7Ī¼m for EC-PCD010, R z=1.4Ī¼m for EC-PCD005, and R z=1.2Ī¼m for EC-PCD002. As a result of burnishing a carbon steel bar (S45C, Ļ30mm) with the EC-PCD tool, the surface roughness value after machining was improved from 10Ī¼m to 1Ī¼m.