FIELD: metallurgy.
SUBSTANCE: method includes manufacture of a casting mould, preparation and application of strengthening composition, pouring the steel, cooling the steel with the mould. On the open surface of solidified casting, a reinforcing composition in the form of a powder is applied at 1250÷1300 °C in the form of a powder charge containing, wt %: boron carbide 75÷85, surfacing flux P-0.66 15÷25. Casts are shaken out after cooling to temperature 600÷700 °C.
EFFECT: reduced duration of the strengthening process and improved quality of the part surface.
2 dwg, 1 tbl
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