Method for chromizing small parts
US5912050A · kind A · utility
8Cited by
9References
18Claims
0Family size
Assignees
Inventors
Key dates
| Filing date | Sep 26, 1997 |
| Grant date | Jun 15, 1999 |
| Priority date | — |
| Expiry date | Sep 26, 2017 |
Classification
- Technology area (CPC C)Chemistry; Metallurgy
- CPC primaryC23C26/00
- WIPO fieldSurface technology, coating
- WIPO sectorChemistry
Abstract
An improved process for chromizing commercial quantities of small, industrial, ferrous-based parts, such as but not limited to threaded connectors, pins, bolts, nuts, washers, fasteners, fittings, couplings, studs, etc., uses a retort filled with layers of parts coated with a chromium-containing slurry. The plurality of parts are arranged in layers on sheets of refractory felt paper and are heat treated simultaneously for causing the chromizing reaction between the slurry and the ferrous-based parts.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.