The cutting edge of the titanium carbide nitride type cermet and the cutting edge of the coated cermet

摘要

The present invention shows a cermet cutting edge made of titanium carbide nitride as a base and a cutting edge made of coated cermet, and is typically composed of a metal bond containing Co and Ni.;Wherein the core portion comprises at least one of a Ti component and at least one Ti component, wherein the core portion comprises a single structural rigid phase containing at least one metal component belonging to group 4a, 5a, 6a of the periodic table, And the shell portion contains at least one component of a metal component belonging to Groups 4a, 5a and 6a of the periodic table other than Ti and Ti. The dual structural rigid phase of the shell portion, which is discontinuously distributed around the core portion and the core portion, and the latter dual structural rigid phase occupy more than 30% of the area, and the cutting edge significantly inhibits the frictional resistance.