Method for hardfacing roller cone drill bit legs
US6874388B2 · kind B2 · utility
1Cited by
4References
6Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | Apr 3, 2002 |
| Grant date | Apr 5, 2005 |
| Priority date | — |
| Expiry date | May 31, 2022 |
Classification
- Technology area (CPC C)Chemistry; Metallurgy
- CPC primaryC23C30/005
- WIPO fieldSurface technology, coating
- WIPO sectorChemistry
Abstract
A method is disclosed for applying hardfacing to a shirttail portion of a roller cone drill bit, including masking around the shirttail portion of the bit and operating a high pressure/high velocity oxygen fuel torch to apply the hardfacing to the shirttail portion.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.