Low pressure carbonitriding method and device
US8303731B2 · kind B2 · utility
4Cited by
3References
7Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | Apr 19, 2006 |
| Grant date | Nov 6, 2012 |
| Priority date | — |
| Expiry date | Jul 4, 2028 |
Classification
- Technology area (CPC C)Chemistry; Metallurgy
- CPC primaryC23C8/34
- WIPO fieldSurface technology, coating
- WIPO sectorChemistry
Abstract
A method for carbonitriding a steel part arranged in an enclosure maintained at a reduced internal pressure, the part being maintained at a temperature level, comprising an alternation of first and second steps, a carburizing gas being injected into the enclosure during the first steps only and a nitriding gas being injected into the enclosure only during at least part of at least two second steps.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.