详细介绍了采取顶注式浇注系统、成形外冷铁、复合铸型、组芯造型的铸造工艺，成功地生产出批量铝叶轮。

The casting technique with top gating system, outer shaped iron chill, compound casting mold and core assembly molding was used for producing aluminum impeller on a large scale successfully.

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即使在同时改变组份及其流量的情况下，既可以保证很快的浇注节奏又可以保证良好的发泡效果。

Even if simultaneously ls changing the component and its flow capacity situation both may guarantee the very quick pouring rhythm and to guarantee the well foaming effect.

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