Method of making a PVD-coated HSS drill
US6224972A · kind A · utility
1Cited by
7References
10Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | Jun 7, 1999 |
| Grant date | May 1, 2001 |
| Priority date | — |
| Expiry date | Jun 7, 2019 |
Classification
- Technology area (CPC Y)Emerging Cross-Sectional Technologies
- CPC primaryY10T428/31707
- WIPO fieldSurface technology, coating
- WIPO sectorChemistry
Abstract
The present invention discloses an HSS tool with a PVD coating and with at least one cutting edge. The cutting edge has a radius of 15-25 .mu.m and the carbides in the HSS are in contact with the coating. The present invention also relates to a method of making an HSS tool provided with a PVD coating with improved wear resistance. The improvement is obtained by subjecting the tool prior to the deposition of the coating to an electropolishing treatment such that a cutting edge radius of 15-25 .mu.m is obtained and that the carbides in the HSS are revealed.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.