| 摘要 |
A crucible (11) for use in a continuous casting process using upwards feed induced by gas pressure within a surrounding casing (10) consists of a monolithic or one-piece crucible body (28) of refractory material defining a melt chamber (29) having a charging opening (30) at one end and a melt outlet (31) at the opposite end, the melt outlet communicating with a die feed port (35) by way of ducts (32, 34) extending through the crucible body. The melt chamber and the ducts are formed in the body by machine-boring or drilling. The melt outlet (31) also communicates with a narrowed drain port (33B) near which are cooling probe recesses (38) for receiving cooling probes (44) to effect a drain plug of "frozen" melt. The plug is cleared to drain the crucible completely simply by withdrawing the cooling probes. |
