WIRE DRAWING DIE COMPOSITES

摘要

A wire-drawing die blank comprising a diamond or cubic boron nitride abrasive compact, a mass of metal bonded carbide surrounding the compact and providing it with symmetrical support and a metal layer bonding the carbide mass to the abrasive compact, the metal of the bonding layer being tantalum or an alloy containing tantalum. The blank is converted into a wire-drawing die composite by providing the compact with a centrally located hole extending therethrough.