FIELD: foundry.
SUBSTANCE: method involves making part of lower half of mold and part of upper half of mold. In the main body section of the mold, a separating line which separates a part of the lower half of the mold from the part of the upper half of the mold, is centered between parts of mold, which form openings of window for brake in sides of bolster. One or more rods are inserted into the mold, and molten material is poured into the mold. Thickness of sidewalls of bolster is identical and constant relative to dividing line of mold.
EFFECT: higher accuracy and purity of cast surface.
21 cl, 11 dwg
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