| 摘要 |
FIELD: foundry; casting of single-crystal turbine blades. SUBSTANCE: casting mold has bowl connected by means of gates with corresponding working hollows interconnected by channels, and each is connected with bowl bottom. Channels are located over edges of bowl bottom which is made either with inclination to the channels, or, to gate hollows. Width of channel-to-width of bowl bottom relation is B = (0.1-0.5)L, and channel height is selected with respect to channel which as K = (0.1-1)B. A part of channels may be made in bowl bottom, while the other, is made between gates of two neighboring working hollows. Height of column of poured metal is selected from the following relation of parameters H = (0.15-1.0)h, where H is height of column of poured metal, and h is height of gate. EFFECT: higher efficiency. 8 cl, 4 dwgo
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