Method and apparatus for fabrication of cobalt alloy composite inserts
US6063333A · kind A · utility
208Cited by
7References
29Claims
0Family size
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Inventor
Key dates
| Filing date | May 1, 1998 |
| Grant date | May 16, 2000 |
| Priority date | — |
| Expiry date | May 1, 2018 |
Classification
- Technology area (CPC F)Mechanical Engineering; Lighting; Heating
- CPC primaryF27D2099/0028
- WIPO fieldThermal processes and apparatus
- WIPO sectorMechanical engineering
Abstract
This disclosure features a process of making a two part drill bit insert, namely, a body portion of hard particles such as tungsten carbide particles mixed in an alloy binding the particles. The alloy preferably comprises 6% cobalt with amounts up to about 10% permitted. The body is sintered into a solid member, and also joined to a PDC crown covering the end. The crown is essentially free of cobalt. The process sinters the crown and body while preserving the body and crown cobalt differences.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.