就热型连铸工艺条件下对具有共晶、包晶和共析转变的5种典型锌铝合金的连续定向凝固进行了研究, 找出了各种合金的最佳工艺参数配合范围. 研究表明: 引锭操作是热型连铸工艺的关键环节, 型口温度、拉铸速度、冷却条件、合金成分和液位压头对铸锭表面质量有直接影响, 型口位置的固液区存在着热和力的平衡. 只有通过调节工艺参数, 维持固液界面的良好位置, 才能拉铸出表面光滑的线材.
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