Assertion: elemental silicon | /r/AtLocation | molten cast iron
Facets:
value: to improve performance
type: PURPOSE
value: as ferrosilicon or silicocalcium alloys
type: MANNER
Source sentences:
text: Elemental silicon is added to molten cast iron as ferrosilicon or silicocalcium alloys to improve performance in casting thin sections and to prevent the formation of cementite where exposed to outside air.