Fracture and wear resistant compounds and rock bits

Details Fracture and wear resistant compounds and rock bits Fracture and wear resistant compounds and rock bits

2006-05-02

2006-05-02

Neuder, William (Department: 3672)

Boring or penetrating the earth

Bit or bit element

Rolling cutter bit or rolling cutter bit element

C175S425000, C175S428000

Reexamination Certificate

active

07036614

ABSTRACT:
An insert for a rock bit that includes tungsten carbide particles, and a cobalt binder disposed around the particles, wherein a grain size of the tungsten carbide particles and a content of the cobalt binder are selected to provide a fracture toughness of at least about 18 ksi (in)0.5, a wear number of at least about 2, and a hardness of 85 to 87 Ra is disclosed.

REFERENCES:
patent: 5833020 (1998-11-01), Portwood et al.
patent: 5880382 (1999-03-01), Fang et al.
patent: 6220375 (2001-04-01), Butcher et al.
patent: 6244364 (2001-06-01), Cariveau et al.
patent: 6655478 (2003-12-01), Liang et al.
patent: 2004/0140133 (2004-07-01), Liang
patent: 0 288 775 (1988-11-01), None
patent: 2 315 777 (1998-02-01), None
patent: 2 333 541 (1999-07-01), None
patent: 2362406 (2001-11-01), None
patent: 2 383 060 (2003-06-01), None
patent: 2 391 236 (2004-02-01), None
patent: WO 97/48876 (1997-12-01), None
United Kingdom Combined Search and Examination Report dated Jun. 23, 2004 (5 pages).
Patent Act 1977: Search Report under Section 17 (1 page).

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