ABRASIVE WIRE FOR CUTTING SLICES FROM AN INGOT OF HARD MATERIAL

摘要

The invention relates to an abrasive wire which comprises: abrasive particles (32) of which the 5 % minimum diameter, denoted D5, is no lower than 5 μm and of which the 95 % maximum diameter, denoted D95, is less than 40 μm; and a binder (34) which mechanically holds the abrasive particles on a central core, the thickness of said binder being between Tbo_min and Tbo_max, where Tbo_min and Tbo_max are provided by the following relationships Tbo_max = D5 x (1 - Emin/100) and Tbo_min = D95 x (1 - Emax/100), where Emin and Emax are, respectively, greater than 50 % and less than 90 %. The binder (34) has a hardness of greater than 450 Hv on the Vickers scale and the number of abrasive particles (32) per millimetre of wire is less than 31 and greater than 1 over at least 1 km of the length of the wire.