CUBIC BORON NITRIDE COMPLEX POLYCRYSTALLINE SUBSTANCE, METHOD FOR MANUFACTURING SAME, CUTTING TOOL, WIRE-DRAWING DIE, AND GRINDING TOOL

摘要

A kind of cubic boron nitride Polycrystalline substance has a granular cubic boron nitride (1) and plate cubic boron nitride (2). The granular cubic boron nitride (1) of average grain diameter is 500 or smaller. The plate cubic boron nitride (2) of the maximum value (3) of short side is 10 or more and 10000 or smaller. A kind of cubic boron nitride Polycrystalline substance has high rigidity, manufacturing method, cutting tool, wire drawing die, grinding tool, it is possible thereby to be provided.