Cutting tool
US6756110B2 · kind B2 · utility
4Cited by
10References
9Claims
0Family size
Assignee
Inventor
Key dates
| Filing date | Nov 30, 2001 |
| Grant date | Jun 29, 2004 |
| Priority date | — |
| Expiry date | Apr 18, 2022 |
Classification
- Technology area (CPC Y)Emerging Cross-Sectional Technologies
- CPC primaryY10T428/265
- WIPO fieldSurface technology, coating
- WIPO sectorChemistry
Abstract
A cutting tool of the invention comprises a cemented carbide main body and a coating layer formed on the surface of the main body, wherein a region where a reduction ratio of Zr to the inside of the main body is smaller than a reduction ratio of other metals of the groups 4a, 5a and 6a in the Periodic Table, is disposed in the vicinity of the surface of the cemented carbide main body. Therefore, wear resistance and plastic deformation resistance to hardly machinable materials such as stainless steel can considerably be improved for elongating tool life.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.