Surface grinding abrasive tool composed of superabrasive grain, friable filler and metal bond matrix

摘要

Abrasive tools suitable for precision grinding of hard brittle materials such as ceramics and composites comprising ceramics at peripheral wheel speeds up to 160meters/second are described. 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. A preferred tool for backgrinding ceramic wafers contains graphite filler and a relatively low concentration of abrasive grain.