| 摘要 |
<p>A cutting insert (20) for a machine tool comprising a flat blade formed from polycrystalline diamond material and having a front face (21) thereon formed from the PCD phase (23) with at least one cutting edge (22) thereon, and a rear face formed from the second phase substrate (24), the rear face having serrations (25) therein formed within the second phase substrate (24), preferably substantially normal to each cutting edge.</p> |
