Cemented carbide body used preferably for rock drilling and mineral cutting
US4743515A · kind A · utility
171Cited by
11References
18Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | Oct 25, 1985 |
| Grant date | May 10, 1988 |
| Priority date | — |
| Expiry date | Oct 25, 2005 |
Classification
- Technology area (CPC Y)Emerging Cross-Sectional Technologies
- CPC primaryY10T428/265
- WIPO fieldSurface technology, coating
- WIPO sectorChemistry
Abstract
The present invention relates to cemented carbide bodies preferably for rock drilling and mineral cutting. By having the bodies comprising a core of cemented carbide containing eta-phase surrounded by a surface zone of cemented carbide free of eta-phase and having a low content of cobalt in the surface and a higher content of cobalt next to the eta-phase zone the bodies have obtained an increased strength and life in practical use.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.