FIELD: foundry practice. SUBSTANCE: mold is filled with metal through a relatively large feeder with the pressing piston moving at 0.3-0.5 m/s and with subsequent shutting off the deep ventilation duct in upper part of mold. Relation of the section of pressing chamber to feeder section and to the section of ventilation duct is (4.5-5.5):2:1. EFFECT: higher efficiency. 1 tbl
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