| 摘要 |
The invention concerns a unit comprising a mould (4) adapted to receive a molten metal alloy and the said metal alloy poured therein. The alloy is TiAl. The mould is rotational and comprises receiving recesses (135) made of steel, metal alloy and/or ceramic, and, at the location of a plurality of section planes each passing through the mould and the poured metal alloy, the mould has a surface heat capacity less than that of the poured metal alloy, |
| 主权项 |
1. Unit comprising:
a mould rotating around an axis, for centrifuge casting, and a TiAl metal the said metal alloy poured into the mould thereinto, the mould including: receiving recesses made of soft steel, steel, metal alloy and/or ceramic, adapted to receive the centrifuge casting of the said molten TiAl metal alloy, the recesses extending radially around the axis, and liners defining all the recesses and which are housed in at least one hollow soft steel, steel or metal alloy exoskeleton, and at the location of a plurality of section planes each passing through the mould and the poured metal alloy, the mould having a surface heat capacity it less than that of the poured metal alloy, of which: the exoskeleton or exoskeletons is/are open-worked, or an empty space exists around the periphery between each liner and the exoskeleton that surrounds it, or an alveolar structure exists around the periphery between each liner and the exoskeleton that surrounds it. |
