An elongate rotary machining tool comprising a cermet having...

Details An elongate rotary machining tool comprising a cermet having... An elongate rotary machining tool comprising a cermet having...

C - Chemistry, Metallurgy

22

C

C22C 29/02 (2006.01) C22C 29/00 (2006.01) C22C 29/06 (2006.01)

Patent

CA 2302355

An elongate rotary tool including at least one cutting edge (4, 6) that is useful in the machining of workpiece materials is disclosed. The elongate rotary tool comprises a cermet comprising at least one hard component and about 0.2 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.

L'invention concerne un outil oblong rotatif comprenant au moins une arête de coupe (4, 6) utile dans l'usinage de matériaux de pièces à usiner. L'outil oblong rotatif comprend un cermet renfermant au moins un constituant dur et environ 0,2 à 19 % en poids d'un liant Co-Ni-Fe. Le liant Co-Ni-Fe est unique en ce que même lorsqu'il est soumis à une déformation plastique il conserve sensiblement sa structure cristalline cubique à faces centrées et il évite les transformations induites par contraintes et/ou efforts.

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