An abrasive tool having a working portion which includes an abrasive insert which is exposed to high temperatures during manufacture or use of the tool. Examples of such tools are dressing or turning tools and surface set or impregnated drill bits. The tools are characterized by the abrasive insert comprising...http://www.google.es/patents/US4793828?utm_source=gb-gplus-sharePatente US4793828 - Abrasive products
