Method of healing cracks and flaws in a previously sintered cemented carbide tools
US5186892A · kind A · utility
95Cited by
1References
8Claims
0Family size
Assignee
Inventor
Key dates
| Filing date | Jan 17, 1991 |
| Grant date | Feb 16, 1993 |
| Priority date | — |
| Expiry date | Jan 17, 2011 |
Classification
- Technology area (CPC B)Performing Operations; Transporting
- CPC primaryB22F3/10
- WIPO fieldMaterials, metallurgy
- WIPO sectorChemistry
Abstract
This patent covers the concept of putting a previously sintered carbide tool or part back through the sintering process. This resintering, heals stress related microcracks which, when allowed to progress, could ultimately be a cause of the failure for the object. This produces a longer life, better quality cemented carbide tool to be used for cyclically applying pressure and/or heat.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.