| 摘要 |
The pouring tube includes a discharge portion having discharge ports in its wall for splitting the flow of melt, and for directing the various portions of the flow into the surrounding melt as melt streams emerging at angles to the outer surface of the pouring tube. The angles of the streams to the pouring tube are selected such that the energy of the streams is dissipated in the surrounding melt before the streams impinge against a wall of the mold. The pouring tube also includes seals for temporarily preventing the emergence of selected streams in order to avoid excessive splashing and/or material build up on the walls of the mold during the start-up phase of its operation.
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