Surface-coated cermet cutting tool with hard coating layer having excellent chipping resistance
US7348051B2 · kind B2 · utility
Assignee
Inventors
Key dates
| Filing date | Jun 30, 2005 |
| Grant date | Mar 25, 2008 |
| Priority date | — |
| Expiry date | Apr 19, 2026 |
Classification
- Technology area (CPC Y)Emerging Cross-Sectional Technologies
- CPC primaryY10T428/265
- WIPO fieldSurface technology, coating
- WIPO sectorChemistry
Abstract
A surface-coated cermet cutting tool with a hard coating layer is provided. The surface-coated cermet cutting tool is formed by coating, on a surface of a tool substrate, the hard-coating layer which includes an upper layer and a lower layer. The lower layer contains titanium compound layers and the upper layer contains an Al2O3 layer. One layer of the titanium compound layers in the lower layer includes a TiCN layer which has an average layer thickness of 2.5 to 15 μm and indicates a tilt-angle frequency distribution graph in which the highest peak exists in a tilt angle section ranging 0 to 10° and the total sum of frequencies existing in the range of 0 to 10° occupies a ratio of 45% or more of the total frequencies in the tilt-angle frequency distribution graph.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.