| 摘要 |
<p>An abrasive body which comprises an abrasive compact bonded to a support along an interface, the abrasive compact presenting a working surface and a cutting edge or point on that surface, is provided. The abrasive compact in the abrasive body is characterised by the particle size at the working surface being finer than that at the interface and the particle size of the compact changing from the working surface to the interface in a continuous manner and with the substantial absence of any boundary between particle sizes. There is thus a continuous grading of particle size from the working surface to the interface.</p> |
