Method for producing spheroidal graphite cast iron and vehicle component using said spheroidal graphite cast iron
US9556498B2 · kind B2 · utility
0Cited by
7References
4Claims
0Family size
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Key dates
| Filing date | Oct 5, 2012 |
| Grant date | Jan 31, 2017 |
| Priority date | — |
| Expiry date | Sep 29, 2033 |
Classification
- Technology area (CPC C)Chemistry; Metallurgy
- CPC primaryC21C2300/08
- WIPO fieldMaterials, metallurgy
- WIPO sectorChemistry
Abstract
A method for producing spheroidal graphite cast iron having a specific final composition includes: subjecting a molten iron to a spheroidization treatment using a spheroidizing agent of an Fe—Si—Mg—Ca-based alloy containing no rare earth element; conducting an inoculation treatment using a first Fe—Si-based inoculant; and conducting a pouring inoculation treatment with a given amount of a second Fe—Si-based inoculant containing 45-75% of Si, 1-3% of Ca, and 15 ppm or less of Ba.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.