Materials, methods and techniques for surface alloying sand casted articles
US12420332B2 · kind B2 · utility
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19References
18Claims
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Key dates
| Filing date | Oct 26, 2021 |
| Grant date | Sep 23, 2025 |
| Priority date | — |
| Expiry date | May 24, 2042 |
Classification
- Technology area (CPC C)Chemistry; Metallurgy
- CPC primaryC22C38/58
- WIPO fieldMaterials, metallurgy
- WIPO sectorChemistry
Abstract
Exemplary articles may comprise a surface alloyed layer, a base metal comprising a steel, and a transitional layer between the surfaced alloyed layer and the base metal. The surface alloyed layer may comprise nickel (Ni), chromium (Cr), manganese (Mn), molybdenum (Mo), silicon (Si), or combinations thereof. Exemplary methods of making an article may comprise coating a portion of a sand mold with a metal slurry, pouring a molten steel alloy onto the sand mold, and removing the article from the sand mold.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.