大规格7050铝合金圆锭熔铸工艺参数优化的数值模拟  

Numerical Simulation of Casting Process Parameter Optimization for Large-Sized AA7050 Billet during Direct-Chill Casting

作　　者：白清领[1] 李宏祥[1] 向曙光 王正安 游江海 张济山[1] 庄林忠[1] 

机构地区：[1]北京科技大学新金属材料国家重点实验室,北京100083 [2]西南铝业有限责任公司,重庆401326

出　　处：《稀有金属材料与工程》2014年第7期1655-1660,共6页Rare Metal Materials and Engineering

基　　金：中央高校基本科研业务费专项资金资助项目(FRF-TD-12-001);教育部博士学科点专项科研基金项目(20120006110019);新金属材料国家重点实验室开放课题资助项目(2012Z-13)

摘　　要：采用某铝业公司提供的铸造工艺参数,基于温度场、应力场和流场三场的耦合系统研究了铸造工艺参数设置对熔铸过程的影响。结果显示,铸造速度对应力场影响非常大,而铸造温度、水流量对应力场的影响则不太明显。针对800 mm铸锭热裂问题,通过数值模拟对原工艺参数进行了优化。The effects of casting parameters on casting process of AA7050 alloy were investigated by coupling thermal, fluid flow and stress fields based on the parameters provided by an aluminum corporation. The results show that the casting speed has a prominent effect on stress field while the influences of casting temperature and water flow rate are not obvious. The optimization of casting parameters was performed through numerical simulation in order to solve hot tearing problem in 800 mm round billets.

关 键 词：7050铝合金 热裂 应力场 参数优化 

分 类 号：TG292[金属学及工艺—铸造]