| 摘要 |
Casting moulded metal parts (4') involves pouring molten metal into at least one pouring inlet (6) disposed within the area of the upper side of a casting mould (1), said inlet being connected with the lower area of the moulding cavity (3) by means of at least one channel (5); during said casting, the molten metal in the channel (5) is required in order to ensure that the blowhole is formed outside the casting. This may be achieved by means of an airhole of suitable dimensions, or by maintaining the casting pressure. Firstly, the molten metal within the casting mould (1) is passed through at least one pre-chamber (4) disposed below, and connected to, the moulding cavity (3). When the moulding cavity is completely full, the casting mould is swung about a horizontal axis (9) and moved from the casting station. The molten metal most recently poured in, therefore at the highest temperature on termination of the casting process, is now situated above the casting and assumes the function of the airhole. In comparison with the known process, wastage may be reduced by at least one half.
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