| 摘要 |
A gating system for adding an alloying material to a molten base metal in immediate connection with a casting process. The gating system has a runner (2) having an inlet (7) whose cross-sectional area is throttled, a reaction chamber (4) whose sectional area varies along the height of the reaction chamber (4) as a function of the teeming rate, and a pressure and mixing chamber (5) which is connected after the reaction chamber (4) and provided with a partition (9). This results in a constant alloying material content of the metal being obtained at a varying teeming rate during the casting process.
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