Method for producing corrosion-resistant surfaces of nitrated or nitrocarburated steel components
US8747573B2 · kind B2 · utility
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6Claims
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Inventor
Key dates
| Filing date | Oct 29, 2008 |
| Grant date | Jun 10, 2014 |
| Priority date | — |
| Expiry date | Feb 26, 2031 |
Classification
- Technology area (CPC F)Mechanical Engineering; Lighting; Heating
- CPC primaryF16F2226/026
- WIPO fieldSurface technology, coating
- WIPO sectorChemistry
Abstract
The invention relates to a method for producing corrosion-resistant surfaces of nitrated or nitrocarburated steel components, the surfaces having roughness heights (Rz) of Rz≧1.5 μm. The method comprises the following steps: oxidation of the surfaces of the nitrated or nitrocarburated components in a first oxidation step; carrying out at least a second oxidation of the component surfaces in an immediately subsequent oxidation step; polishing the component surface in a final method step, directly after the final oxidation.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.