BONDED ABRASIVE ARTICLE

摘要

A bonded abrasive article includes, on a total weight basis: 30 to 37 percent of ceramic-coated blue fused aluminum oxide particles; 30 to 37 percent of non-seeded sol-gel alumina-based abrasive particles, wherein the non-seeded sol-gel alumina-based abrasive particles are composed of crystallites of alpha alumina, magnesium alumina spinel, and rare earth hexagonal aluminate; a phenolic binder that comprises a reaction product of 8 to 12 percent by weight of curable novolac phenolic resin and 2.1 to 5.1 percent by weight of curable resole phenolic resin; 3 to 6 percent by weight of metal fibers having a length of 5 millimeters or less; 8 to 11 percent by weight of cryolite; and 0.1 to 0.3 percent by weight of electrically conductive particles. Methods of making and using the bonded abrasive article are also disclosed.