大型空心钢锭的凝固模拟分析  

Solidification Simulation Analysis of Large Hollow Steel Ingot

作　　者：赵亚楠 Zhao Yanan

机构地区：[1]天津职业大学机电工程与自动化学院,天津300410

出　　处：《大型铸锻件》2020年第6期5-7,共3页Heavy Casting and Forging

基　　金：天津职业大学科学研究基金项目(20191102)资助。

摘　　要：采用数值模拟方法对大型空心钢锭的凝固过程进行了研究分析,以钢珠作为套筒与芯子之间的填充物,分析套筒厚度对钢锭凝固过程的影响。结果表明,套筒厚度增大,钢锭的完全凝固时间增加,而夹杂可上浮时间减小,缩孔缩松分布影响不大,但可以有效延长钢珠侧套筒达到熔化温度的时间,而且增大钢锭内壁的坯壳厚度,可保证安全生产。The solidification process of large hollow ingot has been studied and analyzed by numerical simulation method.The influence of sleeve thickness on solidification process of ingot has been analyzed with steel ball as filler between sleeve and core.The results show that with the increase of sleeve thickness,the complete solidification time of ingot increases,while the floating time of inclusions decreases,and the influence on shrinkage cavity and porosity distribution is not significant,but the time for the sleeve at the side of steel ball to reach the melting temperature can be effectively extended,and the safety production can be guaranteed by increasing the thickness of billet shell inside the ingot.

关 键 词：空心钢锭 套筒 钢珠 数值模拟 

分 类 号：O242[理学—计算数学]