Method for removing the hard material coating applied on a hard metal workpiece and a holding device for at least one workpiece
US6627064B1 · kind B1 · utility
1Cited by
7References
40Claims
0Family size
Assignee
Inventor
Key dates
| Filing date | Oct 23, 2000 |
| Grant date | Sep 30, 2003 |
| Priority date | — |
| Expiry date | Nov 9, 2020 |
Classification
- Technology area (CPC C)Chemistry; Metallurgy
- CPC primaryC25D7/04
- WIPO fieldSurface technology, coating
- WIPO sectorChemistry
Abstract
A hard material layer deposited on a hard metal work piece is removed by electrolytic passivation in which a maximum current density equal to at least 0.01 A/cm2 is generated on the work piece at the beginning of the layer removal process. The hard material layer rapidly flakes off without causing substantial damage to the hard metal material located underneath.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.