Abrasive tools
First Claim
Patent Images
1. An abrasive tool comprising a core, having a minimum specific strength of 2.4 MPa-cm3 /g, a core density of 0.5 to 8.0 g/cm3 and a circular perimeter;
- an abrasive rim defined by at least one abrasive segment; and
a thermally stable bond between the core and the rim;
wherein the abrasive segment consists essentially of 45 to 90 volume % metal bond matrix and 10 to 50 volume % abrasive grain sintered together at a temperature of 370-550°
C., and has a fracture toughness of 1.0 to 6.0 MPa M1/2 ; and
wherein the abrasive tool is adapted for precision grinding of brittle materials at speeds up to 160 m/s.
1 Assignment
0 Petitions
Accused Products
Abstract
Abrasive tools suitable for precision grinding of hard brittle materials, such as ceramics and composites comprising ceramics, at peripheral wheel speeds up to 160 meters/second are provided. The abrasive tools comprise a wheel core attached to an abrasive rim of dense, metal bonded superabrasive segments by means of a thermally stable bond.
76 Citations
12 Claims
-
1. An abrasive tool comprising a core, having a minimum specific strength of 2.4 MPa-cm3 /g, a core density of 0.5 to 8.0 g/cm3 and a circular perimeter;
- an abrasive rim defined by at least one abrasive segment; and
a thermally stable bond between the core and the rim;
wherein the abrasive segment consists essentially of 45 to 90 volume % metal bond matrix and 10 to 50 volume % abrasive grain sintered together at a temperature of 370-550°
C., and has a fracture toughness of 1.0 to 6.0 MPa M1/2 ; and
wherein the abrasive tool is adapted for precision grinding of brittle materials at speeds up to 160 m/s. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12)
- an abrasive rim defined by at least one abrasive segment; and
Specification