Abrasive tools

Details Abrasive tools Abrasive tools

B - Operations, Transporting

24

D

B24D 5/06 (2006.01) B24D 3/08 (2006.01)

Patent

CA 2324578

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 (2) attached to an abrasive rim of dense, metal bonded superabrasive segments (8) by means of a thermally stable bond (6). A preferred tool for backgrinding ceramic wafers contains graphite filler and a relatively low concentration of abrasive grain (4).

L'invention concerne des outils abrasifs appropriés à une rectification précise, à des vitesses périphériques de roue atteignant 160 mètres par seconde, de corps fragiles durs, tels que la céramique et les composites contenant de la céramique. Ces outils abrasifs se composent d'un moyeu (2) sur lequel est fixée au moyen d'une liaison (6) thermiquement stable une couronne abrasive de segments (8) superabrasifs denses liés par métal. Un outil préféré pour rectifier la surface de tranches de céramique contient une charge de graphite et une concentration relativement faible de grains (4) abrasifs.

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