Cemented carbide tool and method of making the same

Details Cemented carbide tool and method of making the same Cemented carbide tool and method of making the same

2004-12-15

2008-11-11

King, Roy (Department: 1793)

Specialized metallurgical processes, compositions for use therei

Compositions

Consolidated metal powder compositions

C428S547000

Reexamination Certificate

active

07449043

ABSTRACT:
A cemented carbide tool comprising hard constituents in a binder phase of Co and/or Ni and at least one surface portion and an interior portion in which surface portion the grain size is smaller than in the interior portion is disclosed. The surface portion with the fine grain size has a lower binder phase content than the interior portion. A method to form the cemented carbide cutting tool is also disclosed.

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O. Eso et al., “Liquid Phase Sintering of Functioally Graded WC-Co Composites”,International Journal of Refractory Metals&Hard Materials 23, (2005), pp. 233-241.

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