基于傅立叶导热微分方程,建立了薄板坯连铸过程中凝固传热的数学模型,编制了预测连铸过程中温度场分布的计算机模拟程序.利用该程序计算了不同拉速及冷却条件下,铜薄板连铸过程中温度场的分布,并分析了拉速、冷却条件对铸坯温度的影响.模拟结果表明:拉速提高,出坯温度明显升高,因此为了防止拉漏,关键是选择合理的拉速;同时,冷却条件也是影响结晶器温度场分布的重要工艺参数之一;模型计算得出的铸坯温度与实测值基本相符,温度误差在10℃以下,计算结果可优化连铸工艺参数.
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