High-strength, high-toughness matrix bit bodies

Details High-strength, high-toughness matrix bit bodies High-strength, high-toughness matrix bit bodies

2007-06-18

2010-02-16

King, Roy (Department: 1793)

Boring or penetrating the earth

Bit or bit element

Specific or diverse material

C175S374000, C428S539500, C075S240000

Reexamination Certificate

active

07661491

ABSTRACT:
A new composition for forming a matrix body which includes spherical sintered tungsten carbide and an infiltration binder including one or more metals or alloys is disclosed. In some embodiments, the composition may include a Group VIIIB metal selected from one of Ni, Co, Fe, and alloys thereof. Moreover, the composition may also include cast tungsten carbide. In addition, the composition may also include carburized tungsten carbide.

REFERENCES:
patent: 5880382 (1999-03-01), Fang et al.
patent: 6287360 (2001-09-01), Kembaiyan et al.
patent: 6682580 (2004-01-01), Findeisen et al.
patent: 2002/0084111 (2002-07-01), Evans
patent: 2002/0162691 (2002-11-01), Fang et al.

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