胡文义,乐启炽,刘轩,张志强,宝磊,崔建忠

• 1:东北大学材料电磁过程研究教育部重点实验室

摘要(Abstract)：

针对实际情况采用传热系数修正的方法,模拟了AZ31镁合金大规格板坯(308 mm×810 mm)半连续铸造过程的稳态温度场,分析了铸造速度对板坯温度场的影响。结果表明,随着铸造速度增加,初凝壳位置下降,液穴深度增加,合理的铸造速度为30~35 mm/min。凝固过程中温度梯度绝对值的最大值出现在结晶器底端板坯与冷却水接触处。为降低液穴深度,在大规格镁合金板坯的生产中应使用分流槽或多入口的方式将高温熔体导流至横截面远端。

关键词(KeyWords)： 大规格镁合金板坯;半连续铸造;数值模拟;温度场

Abstract:

Keywords:

基金项目(Foundation): 国家“973”项目(2013CB632203);; 辽宁省自然科学基金资助项目(201202072,2014028027);; 辽宁省高等学校优秀人才支持计划(LJQ2012023);; 中央高校基本科研业务费专项资金(N120509002)

作者(Author): 胡文义,乐启炽,刘轩,张志强,宝磊,崔建忠

DOI: 10.13289/j.issn.1009-6264.2015.05.038

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