基于凝固模拟的冒口高度设计及验证  

Riser Height Design and Validation Based on Solidification Simulation

作　　者：徐亚东[1,2] 沈厚发[2] 韩非 

机构地区：[1]内蒙古北方重工业集团公司,内蒙古包头014033 [2]清华大学材料学院,北京100084

出　　处：《热加工工艺》2015年第9期165-167,172,共4页Hot Working Technology

基　　金：国家重点基础研究发展计划项目(2011CB012900)

摘　　要：采用铸造模拟分析软件对不同冒口高度的13500 kg钢锭的凝固过程进行了计算机模拟分析,并预测了钢锭的缩孔缺陷的分布。结果表明,原来生产过程中钢锭冒口高度下的缩孔深度较大。将模拟结果与试验结果进行对比后,两者吻合良好。在此基础上,用计算机模拟优化了冒口高度并进行试验验证。模拟与试验结果表明,优化后的冒口高度可以消除缩孔缺陷,因而提高了钢锭质量和利用率。The solidification processes of 13500 kg steel ingots with different riser heights were simulated by using casting simulation analysis software. The distribution of shrinkage cavities in steel ingots was predicted. The results show that the shrinkage cavity depth under ingot riser height in the original production process is deeper. The simulation results agree with the experimental results well after comparison. On the basis of this,the riser height was optimized by computer simulation and validated by experiments. The simulation and experimental results show that the optimized riser height can eliminate the shrinkage cavity. Thus the steel ingots’ quality and utilization are enhanced.

关 键 词：钢锭 凝固模拟 冒口 

分 类 号：TG244.3[金属学及工艺—铸造]