Materials for enhancing the durability of earth-boring bits, and methods of forming such materials
US8292985B2 · kind B2 · utility
1Cited by
27References
15Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | Feb 24, 2009 |
| Grant date | Oct 23, 2012 |
| Priority date | — |
| Expiry date | Feb 15, 2031 |
Classification
- Technology area (CPC B)Performing Operations; Transporting
- CPC primaryB22F2998/00
- WIPO fieldMaterials, metallurgy
- WIPO sectorChemistry
Abstract
An earth-boring drill bit having a bit body with a cutting component formed from a tungsten carbide composite material is disclosed. The composite material includes a binder and tungsten carbide crystals comprising sintered pellets. The composite material may be used as a hardfacing on the body and/or cutting elements, or be used to form portions or all of the body and cutting elements. The pellets may be formed with a single mode or multi-modal size distribution of the crystals.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.