上方侧注式双辊铸轧连铸工艺的数值模拟  

Numerical Simulation of Top Side-pouring Twin Roll Casting

作　　者：王德[1] 周成[1] 徐国进[1] 

机构地区：[1]北京科技大学材料科学与工程学院

出　　处：《特种铸造及有色合金》2013年第12期1117-1122,共6页Special Casting & Nonferrous Alloys

摘　　要：利用Fluent软件对上方侧注式双辊铸轧的成形过程进行了模拟,研究了熔体从布流浇嘴流出到形成稳定熔池的的整个过程,以及相应的速度场、温度场分布。并且分别对1050Al和Al-10Cu合金进行了模拟分析。结果表明,对于不同凝固区间的合金,上方侧注式双辊铸轧都能通过调节诸如冷却长度、入口流量和过热度等参数,来获得稳定的熔池和匹配的速度场、温度场分布。由于考虑了粘度和表面张力随温度降低而增大,熔池表面波动受到一定的抑制。另外还讨论了不同合金在铸轧过程中由于物性参数不同而表现出的差异。Top side-pouring twin roll casting process was modeled by using the commercial CFD software of Flunent. The whole formation process of the steady melt pool with velocity and temperature distribution was investigated. Two alloys with dramatically different solidifcation ranges, 1050Al and Al-10Cu, were considered, respectively. It is found that, the top side-pouring twin roll casting process has the ability to adapt different alloys by adjusting parameters like solidification length, inlet flow and super- heat. With considering the relationships between temperature and the viscosity of molten metal and surface tension increase with the temperature decrease, the fluctuation of the melt pool surface is restrained. The difference of the two alloys acted in process and the adjustment of the two alloys were described.

关 键 词：双辊铸轧 上方侧注式 数值模拟 FLUENT 软件 

分 类 号：TG249.7[金属学及工艺—铸造]