基于铜包铝复层圆坯水平连铸的数值模拟与试验研究  

Numerical Simulation and Experimental Analysis on the Horizontal Continuous Casting of Cu/Al Cladding Round Billets

作　　者：付莹 付连生 武立 郭继宁 马征 接金川[3] 李廷举[3] 洪海莲[4] Fu Ying;Fu Liansheng;Wu Li;Guo Jining;Ma Zheng;Jie Jinchuan;Li Tingju;Hong Hailian(School of Engineering,Bohai University;School of Materials Science and Engineering,North University of China;School of Materials Science and Engineering,Dalian University of Technology;Mechanical and Electrical Engineering School,Sanming College)

机构地区：[1]渤海大学工学院,辽宁锦州121013 [2]中北大学材料科学与工程学院 [3]大连理工大学材料科学与工程学院 [4]三明学院机电工程学院

出　　处：《特种铸造及有色合金》2020年第2期196-201,共6页Special Casting & Nonferrous Alloys

基　　金：国家自然科学基金资助项目(51704029,51804279,61673071);沈阳市科技创新人才资助项目(RC170456)。

摘　　要：利用Fluent TM模拟软件研究芯部铝液浇注温度、拉坯速度等工艺参数对水平连铸铜/铝复层铸坯温度场、液相率及流场的影响,并进行试验验证。结果表明,芯部铝液浇注温度越高,与铜管接触的铝液温度越高,液穴深度越深,铝铜之间越易发生反应;拉坯速度越快,铝液液穴深度越深,液态铝与铜管壁接触时间越长。铝液浇注温度控制在710~730℃,拉坯速度为200mm/min时可以获得优质的铜/铝复层铸锭,模拟结果与试验结果具有较好的一致性。The casting behavior of copper cladding aluminum in the horizontal continuous casting process was investigated.The effects of pouring temperature of liquid aluminum and casting speed on the distribution of temperature field,liquid fraction and velocity field for copper cladding aluminum during continuous casting process was numerically analyzed using the Fluent TMsoftware combining with the experiments.The simulated results show that with the increase of the pouring temperature of aluminum melt in the graphite core,the temperature of aluminum melt contacted with the copper tube is increased,and the melt meniscus depth is increased,so the reaction between aluminum and copper is generated easily.In addition,with increasing in the casting speed,melt meniscus depth of aluminum liquid is increased,and the contact time between liquid aluminum and the copper tube wall is increased.The simulated results are in good agreement with experimental ones.The experimental results show that the high quality ingot can be obtained at the pouring temperature of 710~730 ℃and casting speed of 200 mm/min.

关 键 词：铜包铝 复层材料 水平连铸 数值模拟 

分 类 号：TG146.11[一般工业技术—材料科学与工程] TG146.21[金属学及工艺—金属材料]