Method and apparatus for manufacturing and inspecting the quality of a matrix body drill bit
US5373907A · kind A · utility
Assignee
Inventor
Key dates
| Filing date | Jan 26, 1993 |
| Grant date | Dec 20, 1994 |
| Priority date | — |
| Expiry date | Jan 26, 2013 |
Classification
- Technology area (CPC B)Performing Operations; Transporting
- CPC primaryB22F2005/001
- WIPO fieldMaterials, metallurgy
- WIPO sectorChemistry
Abstract
Quality of a matrix body of a matrix body drill bit is tested by forming an extension of the matrix material near the nose of the matrix body drill bit. A notch is formed in a mold used to form the matrix body drill bit. The notch is filled with matrix powder during loading of the mold and subsequently infiltrated with binder alloy during infiltration of the matrix body. A matrix body extension is thus formed in the notch. The notch, and thus the matrix body extension, has a ratio of length versus diameter sufficiently high to allow the extension to be removed without permanently damaging the matrix body. The removed extension may then be subsequently tested.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.