COATED ABRASIVE GRIT, METHOD FOR ITS MANUFACTURE AND ITS APPLICATION IN MANUFACTURING ABRASIVE AGENTS

摘要

Abrasive grit (I) such as corundum, fused corundum, sintered corundum, zircon-corundum, silicon carbide, boron carbide, cubic boron nitride and/or diamond with a coating consisting of a binder (II) and a finely-divided inorganic powder (III), in which the binder (II) is based on an aluminosilicate with an aluminum oxide to silicon dioxide ratio of (1:2)-(1:20) plus waterglass and water. An independent claim is included for a method for the production of (I) by wetting the grit with the binder (II) as above in an intensive mixer, mixing with fine inorganic powder (III) until the powder is uniformly distributed over the surface of the grit and then hardening the coating at up to 400[deg] C.