Patent ID: 6093092
Filing Date: 2000-07-25
Classification: B24D

Abstract:
A surface grinding abrasive tool comprising a core, having a minimum specific strength parameter of 2.4 MPa-cm.sup.3 /g, a core density of 0.5 to 8.0 g/cm3, a circular perimeter, an abrasive rim defined by a plurality of abrasive segments; and a thermally stable bond between the core and the rim; wherein the abrasive segments comprise, in amounts selected to total a maximum of 100 volume %, from 0.05 to less than 10 volume % superabrasive grain, from 10 to 35 volume % friable filler, and from 55 to 89.95 volume % metal bond matrix having a fracture toughness of 1.0 to 3.0 MPa M.sup.1/2.