Grade for steel
US6221469A · kind A · utility
22Cited by
10References
19Claims
0Family size
Assignee
Inventor
Key dates
| Filing date | Dec 9, 1998 |
| Grant date | Apr 24, 2001 |
| Priority date | — |
| Expiry date | Dec 9, 2018 |
Classification
- Technology area (CPC Y)Emerging Cross-Sectional Technologies
- CPC primaryY10T428/265
- WIPO fieldSurface technology, coating
- WIPO sectorChemistry
Abstract
An improved coated cemented carbide insert for the cutting of steel is provided. The insert has multi-layer TiCN between the substrate and the .kappa.-Al.sub.2 O.sub.3 coating. The innermost portion of the TiCN layer is composed of large columnar grains while the outermost portion is of small equiaxed grains. Above the .kappa.-Al.sub.2 O.sub.3, another columnar Ti(C,N) layer is applied.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.