Coated cutting tool insert
US7097901B2 · kind B2 · utility
6Cited by
8References
17Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | Feb 19, 2004 |
| Grant date | Aug 29, 2006 |
| Priority date | — |
| Expiry date | Oct 2, 2024 |
Classification
- Technology area (CPC Y)Emerging Cross-Sectional Technologies
- CPC primaryY10T428/265
- WIPO fieldSurface technology, coating
- WIPO sectorChemistry
Abstract
The present invention relates to a coated cemented carbide cutting tool insert particularly useful for turning of cast irons but also low alloyed steels at mediate to high cutting speeds. The cutting tool insert is characterised by a cemented carbide body comprising WC, cubic carbonitrides, a W-alloyed Co binder phase, a surface zone of the cemented carbide body that is binder phase enriched and nearly free of cubic carbonitride phase, and a coating including an innermost layer of TiCxNyOz with equiaxed grains, a layer of TiCxNyOz with columnar grains and at least one layer of Al2O3.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.