FIELD: foundry production.
SUBSTANCE: plate (200) for mould (105) for direct casting includes upper surface (238) and lower surface (248) defining the upper surface of mould cavity (105). At the periphery of lower surface (248), where the plate is in contact with the wall of mould (105), gas bag (230) for casting gas is formed. In plate (200), within surface (240) of the gas bag, one or more vent holes (250) are provided for venting gas bag (230) containing casting gas. The casting gas is removed from the gas bag when a predetermined pressure of the casting gas in the gas bag is reached, which prevents formation of a gas bubble in the gas bag.
EFFECT: removal of excess casting gas from the mould at high casting speeds.
19 cl, 9 dwg
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