초록 ▼

A cutting insert including a flank face, a rake face, and a cutting edge at the intersection of the flank and rake faces that is useful in the chip forming machining of workpiece materials is disclosed. The cutting insert comprises a cermet comprising at least one hard component and about 2 wt % to

A cutting insert including a flank face, a rake face, and a cutting edge at the intersection of the flank and rake faces that is useful in the chip forming machining of workpiece materials is disclosed. The cutting insert comprises a cermet comprising at least one hard component and about 2 wt % to 19 wt % Co--Ni--FE-binder. The Co--Ni--FE-binder is unique in that even when subjected to plastic deformation, the binder substantially maintains its face centered cubic (fcc) crystal structure and avoids stress and/or strain induced transformations.

대표청구항 ▼

[ What is claimed is:] [1.] A cutting tool for chip forming machining of workpiece materials, the cutting tool comprising:a rake face over which chips formed during the chip forming machining of workpiece materials flow;a flank face; anda cutting edge, for cutting into the workpiece materials to for

[ What is claimed is:] [1.] A cutting tool for chip forming machining of workpiece materials, the cutting tool comprising:a rake face over which chips formed during the chip forming machining of workpiece materials flow;a flank face; anda cutting edge, for cutting into the workpiece materials to form the chips, formed at a junction of the rake face and the flank face,Wherein at least the rake face, the flank face and the cutting edge of the cutting tool comprise a cermet comprising at least one hard component and about 2 wt. % to about 19 wt. % Co--Ni--Fe-binder comprising about 40 wt. % to about 90 wt. % cobalt, about 4 wt. % to about 36 wt. % nickel, about 4 wt. % to about 36 wt. % iron, and a cobalt:nickel:iron ratio of about 1.8:1:1.