Inserts for metal cutting purposes
US6811580B1 · kind B1 · utility
31Cited by
3References
8Claims
0Family size
Assignee
Inventor
Key dates
| Filing date | Jan 7, 2002 |
| Grant date | Nov 2, 2004 |
| Priority date | — |
| Expiry date | Jan 7, 2022 |
Classification
- Technology area (CPC Y)Emerging Cross-Sectional Technologies
- CPC primaryY10T428/265
- WIPO fieldMaterials, metallurgy
- WIPO sectorChemistry
Abstract
The present invention relates to a cutting tool with increased tool life when machining grey cast iron. The tool comprises a solid CBN-containing body containing more than 60 vol % CBN and a coating. The coating consists of at least one layer of metal nitride, carbonitride or carbide with the metal elements selected from at least one of Ti, Nb, Hf, V, Ta, Mo, Zr, Cr, W and Al, with a total thickness of 2-7 &mgr;m and 2-8 &mgr;m of &agr;- and/or &kgr;-Al2O3. The coating is a CVD coating deposited at 900° C. or higher.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.