Elongate rotary tool comprising a cermet having a Co-Ni-Fe binder

US6022175A · kind A · utility

Assignee

• KENNAMETAL INC. · US

Inventors

• Hans-Wilm Heinrich · Bayreuth, DE
• Manfred Wolf · Wertheim, DE
• Dieter Schmidt · Bayreuth, DE
• Uwe Schleinkofer · Latrobe, US

Key dates

• Filing date: Aug 27, 1997
• Grant date: Feb 8, 2000
• Expiry date: Aug 27, 2017

Classification

• Technology area (CPC Y): Emerging Cross-Sectional Technologies
• CPC primary: Y10T408/78
• WIPO field: Materials, metallurgy
• WIPO sector: Chemistry

Abstract

An elongate rotary tool including at least one cutting edge 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.