High-strength tungsten carbide material for use in earth-boring bits
US5281260A · kind A · utility
96Cited by
13References
3Claims
0Family size
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Key dates
| Filing date | Feb 28, 1992 |
| Grant date | Jan 25, 1994 |
| Priority date | — |
| Expiry date | Feb 28, 2012 |
Classification
- Technology area (CPC C)Chemistry; Metallurgy
- CPC primaryC22C29/08
- WIPO fieldMaterials, metallurgy
- WIPO sectorChemistry
Abstract
A sintered hard metal compact for use in earth-boring bits comprises 80 to 94% by weight tungsten carbide particles, 5.4 to 18% by weight cobalt particles and 0.6 to 2.0% by weight nickel particles wherein the ratio of cobalt to nickel is approximately 9:1 by weight. These materials are formed according to conventional powder-metallurgy techniques to provide a hard, sintered compact for use in earth-boring bits having superior properties for drilling applications.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.