FIELD: metallurgy.
SUBSTANCE: procedure consists in treatment of iron with solid modifier and in charging covering material on iron surface. As covering material, there is used flux-pearlite "Barrier-200". Solid modifier used in form of crushed cerium additive and magnesium containing additional alloy are introduced into melt between ladle lining and covering material. Rejects of casting for non-metallic inclusions is reduced 10 times, while strength of alloyed iron with spherical graphite in a cast condition is increased from 730 to 940 MPa.
EFFECT: production of milling elements with high operational characteristics in cast state.
4 cl, 1 tbl, 1 ex
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RU2427660C1 |
