Abrasive grain agglomerates, method for their manufacture and their application

摘要

Abrasive grain agglomerate made up of different abrasive grains, where the abrasive grains comprising corundum, fused alumina, sintered alumina, zirconia alumina, silicon carbide, boron carbide, cubic boron nitride and/or diamond are bounded with an inorganic binder comprising aluminosilicate, water glass and water and the molar ratio of aluminum oxide (Al 2O 3) to silicon dioxide (SiO 2) in the binder is 1:2-1:20, is claimed. An independent claim is included for producing the abrasive grain agglomerate comprising mixing the abrasive grains with binder, drying the resulting agglomerate abrasive grain green body at 100-150[deg] C, and curing the dried abrasive grain agglomerate at 200-450[deg] C.