Coated drill and method of making the same
US8043035B2 · kind B2 · utility
5Cited by
7References
9Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | Sep 5, 2007 |
| Grant date | Oct 25, 2011 |
| Priority date | — |
| Expiry date | May 13, 2030 |
Classification
- Technology area (CPC Y)Emerging Cross-Sectional Technologies
- CPC primaryY10T408/9097
- WIPO fieldSurface technology, coating
- WIPO sectorChemistry
Abstract
The present invention relates to a drill comprising a cemented carbide or high speed steel substrate and a coating wherein the coating comprises: a first layer system having a multilayered structure covering substantially the whole active part of the drill, a second layer system having a multilayered structure covering only the tip area of the drill.Drills according to the present invention have good wear resistance and improved properties when reconditioning the drill.The present invention also relates to a method of making a drill according to the present invention.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.