| 摘要 |
<p>The invention concerns sintered bauxite or alumina abrasive grains wherein the surface/volume ratio is greater that 2 mm-1 and which have a prismatic shape truncated by two surfaces, for example planar surfaces substantially perpendicular to the prism axis. Said abrasive grains are used in particular for making grindstones, in particular designed for scarfing stainless steel.</p> |
