FIELD: metallurgy.
SUBSTANCE: invention concerns ferrous metallurgy, particularly it concerns out-furnace treatment of cast iron and steel melts. Flux cored electrode contains of metallic sheath and calcium-bearing filler with particles size 0.4-2.0 mm. Filler material is pure calcium or silicocalcium, or mechanical mixture of pure calcium with one of the following additional components: iron, silicocalcium, magnesium, aluminium, ferroalloy. For achieving of more dense wrapping with filling by fine granules of emptiness between bigger granules, ranulometric composition of filler allows following ratio of fractions, % wt: 1.25-2.0 mm 50÷55, 0.63-1.25 mm 35÷40, 0.4-0.63 mm 5÷15.
EFFECT: increasing of specific content of active reagent in flux cored electrode.
5 cl, 1 tbl
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Authors
Dates
2008-12-27—Published
2006-10-02—Filed