Process for producing spheroidal-graphite cast iron, and spheroidal-graphite cast iron member obtained from said spheroidal-graphite cast iron
US9512498B2 · kind B2 · utility
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Key dates
| Filing date | Dec 19, 2012 |
| Grant date | Dec 6, 2016 |
| Priority date | — |
| Expiry date | Dec 11, 2033 |
Classification
- Technology area (CPC C)Chemistry; Metallurgy
- CPC primaryC22C43/00
- WIPO fieldMaterials, metallurgy
- WIPO sectorChemistry
Abstract
A process for producing spheroidal graphite cast iron includes a spheroidization treatment, an inoculant treatment and a pouring inoculation treatment. A molten iron is subjected to the spheroidization treatment using a spheroidizing agent of an Fe—Si—Mg—Ca-based alloy which contains a given amount of Ba and contains substantially no rare-earth element.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.