FIELD: metallurgy.
SUBSTANCE: invention refers to metallurgy and is designed for desulphurisation and modifying iron-carbon melt for production of items out of grey cast iron and also for iron with graphite of ball and vermicular shapes. According to the first version of the invention powder wire consists of a metal shell and filler in form of powders mixture of metallic magnesium and additive, corresponding to ferro-silicate-calcium, at the following ratio of elements in the filler, wt %: magnesium 20-55, calcium 12-25, silicon 28-50, iron - the rest. According to the second version mixture of ferro-silicate-calcium with ferro-silicate-magnesium and/or magnesium silicide is used as an additive at the following ratio of elements in the filler, wt %: magnesium 15-40, calcium 8-17, silicon 42-64, iron - the rest.
EFFECT: upgraded degree of efficiency of elements in composition of powder wire filler.
6 cl, 1 tbl, 1 ex
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