Patent ID: 6679758
Filing Date: 2004-01-20
Classification: B24B,B24D,C09K

Abstract:
A bonded abrasive tool, having a structure permeable to fluid flow, the tool comprising:a) about 5-75 volume % sintered agglomerates, comprising a plurality of abrasive grains held with a binding material, the binding material being characterized by a melting temperature between 500 and 1400Â° C., and the sintered agglomerates having a three dimensional shape; b) an effective amount of a bond to hold the sintered agglomerates together within the bonded abrasive tool; and c) about 35-80 volume % total porosity, of which at least 30 volume % is interconnected porosity; wherein at least 50%, by weight, of the sintered agglomerates within the bonded abrasive tool include a plurality of abrasive grains held in a three-dimensional shape after manufacture of the tool.