刘文文,黄华贵

• 1:太原理工大学机械与运载工程学院
• 2:太原理工大学先进成形与智能装备研究院
• 3:燕山大学国家冷轧板带装备及工艺工程技术研究中心

摘要(Abstract)：

以二辊?160 mm×150 mm铸轧机为研究对象,以1060纯铝为材料,利用ProCAST的CA-FE模块,建立了铸轧过程的热-流-组织间接耦合模型,研究了铸轧工艺参数对凝固组织与热变形的影响。基于微小变形率下凝固组织形貌未发生变化的假设,建立了铸轧区凝固组织精细化标准。通过铸轧实验验证了仿真模型的准确性,确定了Kiss点以下高度为1 mm区域作为精细化分析参数统计区的合理性。依据该精细分析标准,给出了铸轧速度、浇铸温度、熔池高度、带坯厚度及液态金属凝固形核率等参数对凝固组织和热变形量的影响规律。发现柱状晶尺寸变化与热变形量的变化具有一致性,仅提升液态金属的形核率,可以有效改变凝固组织尺寸和类型。因此,在铸轧设备能力允许的范围内,同时增大热变形量和凝固形核率是一种提升铸轧铝带质量和性能的方法。

关键词(KeyWords)： 双辊铸轧;凝固组织;数值模拟;精细分析;CA-FE分析

Abstract:

Keywords:

基金项目(Foundation): 国家自然科学基金(52005361,51474189)

作者(Author): 刘文文,黄华贵

DOI: 10.13289/j.issn.1009-6264.2021-0040

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