Patent ID: 9144885
Filing Date: 2015-09-29
Classification: B24D,C03C,C04B

Abstract:
1. An abrasive article comprising: a bonded abrasive body having abrasive particles comprising microcrystalline alumina (MCA) contained within a single phase vitreous bond material comprising not greater than about 20 wt % boron oxide (B wherein a content of any individual alkali oxide compound in wt % is not greater than one half of a total content of the alkali oxide compounds in wt % within the bond material, wherein the bonded abrasive body has a porosity of at least 51 vol % and not greater than 70 vol % of the total volume of the bonded abrasive body, a bond content of at least about 6 vol % and not greater than about 14 vol % of the total volume of the bonded abrasive body, and wherein the bonded abrasive body is capable of grinding a workpiece comprising metal at a speed of at least about 60 m/s.