| 摘要 |
<p>Molten metal in a closed reservoir (1) is forced by gas pressure applied to its surface (26) to flow smoothly up a riser tube (6) and replaceable pouring nozzle (17) into a mould (20). When the mould has been filled, the entire assembly formed by the reservoir (1), the riser tube (6) and the mould (20) is inverted so that the molten metal in the riser tube (6) is now available to feed the mould to compensate for shrinkage.</p> |
