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US 10,767,238 B2Granted
Gray cast iron inoculant
AssigneeElkem ASA
InventorMatthew Liptak
Life of this patent
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Abstract
A ferrosilicon inoculant for gray cast iron containing between 0.1 to 10% by weight strontium, less than 0.35% by weight calcium, 1.5 to 10% by weight aluminum and 0.1 to 15% zirconium, The inoculant, method for producing the inoculant, method for inoculating the melt and a gray cast iron inoculated with the inoculant are covered.
Claims4
A ferrosilicon inoculant for cast iron consisting of
- about 15 to 90% by weight silicon;
- about 0.1 to 10% by weight strontium;
- less than about 0.35% by weight calcium;
- about 1.5 to 10.0% by weight aluminum;
- about 0.1 to 15% by weight zirconium, and
- a balance of iron with residual impurities.
3 more elements
Dependencies are inferred from the claim text.