High-strength, high-toughness matrix bit bodies
US7475743B2 · kind B2 · utility
21Cited by
6References
17Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | Jan 30, 2006 |
| Grant date | Jan 13, 2009 |
| Priority date | — |
| Expiry date | Dec 31, 2026 |
Classification
- Technology area (CPC B)Performing Operations; Transporting
- CPC primaryB22F2005/002
- WIPO fieldMaterials, metallurgy
- WIPO sectorChemistry
Abstract
A drill bit that includes a bit body formed from a matrix powder and at least one cutting element for engaging a formation, wherein the matrix powder included (a) stoichiometric tungsten carbide particles, (b) cemented tungsten carbide particles, and (c) cast tungsten carbide particles, and wherein after formation with the matrix powder, the bit has an erosion rate of less than 0.001 in/hr, a toughness of greater than 20 ksi(in0.5), and a transverse rupture strength of greater than 140 ksi is disclosed.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.