초록 ▼

A pick-style tool that includes an elongate tool body with an axially forward end and an axially rearward end, and a hard insert affixed to the tool body at the axially forward end is disclosed. The hard insert comprises a WC-cermet comprising tungsten carbide and about 5 wt. % to 27 wt. % Co--Ni--F

A pick-style tool that includes an elongate tool body with an axially forward end and an axially rearward end, and a hard insert affixed to the tool body at the axially forward end is disclosed. The hard insert comprises a WC-cermet comprising tungsten carbide and about 5 wt. % to 27 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 pick-style tool comprising:an elongate tool body having an axially forward end and an axially rearward end;a hard insert affixed to the tool body at the axially forward end thereof; andthe hard insert comprising a WC-cermet comprising tungsten carbide and about 5 wt. %

[ What is claimed is:] [1.] A pick-style tool comprising:an elongate tool body having an axially forward end and an axially rearward end;a hard insert affixed to the tool body at the axially forward end thereof; andthe hard insert comprising a WC-cermet comprising tungsten carbide and about 5 wt. % to 27 wt. % Co--Ni--Fe-binder comprising about 40 wt. % to 90 wt. % cobalt, about 4 wt. % to 36 wt. % nickel, about 4 wt. % to 36 wt. % iron; a Ni:Fe ratio from about 1.5:1 to 1:1.5; and a face centered cubic (fcc) structure that exhibits substantially no stress and strain induced phase transformations.