摘要
建立了一个描述300mm×500mm的7A52/7B52铝合金复合铸锭铸造复合过程的数学模型,对铸造复合过程中的流场和温度场进行了数值计算,研究了铸造速度对流场、温度场的影响规律,提高铸造速度时,液穴深度增加,复合界面处回热温度提高,铸造速度为45 mm/min时铸造复合过程能顺利进行。将计算结果和实验测温结果进行了对比,结果表明,计算结果和实际测温结果能较好对应,以计算结果进行指导获得了结合良好的复合铸锭。
A mathematical model has been developed to describe the composite process of 300 mm×500 mm 7A52/7B52 composite ingot, which includes the numerical calculation of flow field and temperature field, focusing on investigating the influence of casting speed on flow field and temperature field, the liquid sump depth and reheating temperature are increased with the casting speed increasing, the reasonable casting speed is 45 mrrdmin. In addition, the calculation and thermometric result was compared, the result show that, the calculation and thermometric result is matched. Based on the technics parameters determined by the simulation results, the composite ingots were obtained.
出处
《铸造》
CAS
CSCD
北大核心
2014年第7期679-683,共5页
Foundry
基金
教育部项目基本科研业务费项目国家项目培育种子基金(N130409003)
关键词
复合铸锭
数值模拟
铸造速度
复合界面
composite ingots
numerical simulation
casting speed
composite interface
