铸造CAE在铸件工艺改进上的应用  

Application of Casting CAE in Casting Method Improvement

作　　者：马娅玲 姚红汝 张龙江 刘利平 MA Ya-ling;YAO Hong-ru;ZHANG Long-jiang;LIU Li-ping(Kocel Machinery Co.,Ltd.,Yinchuan 750021,China)

机构地区：[1]共享装备股份有限公司,宁夏银川750021

出　　处：《现代铸铁》2021年第1期4-8,共5页Modern Cast Iron

摘　　要：介绍了小型挡圈铸件的结构及技术要求,详细阐述了原铸造工艺设计方案,通过对铸件的充型、凝固及缩松情况模拟分析,发现铸件的凝固过程不理想,冒口颈过早凝固,存在缩松风险。后通过将平板状冒口颈改为扁球状结构,半径为50 mm,实现了球墨铸铁件顺序凝固的理想方式,有效地防止了缩松缺陷的产生,得出以下结论:在铸造工艺设计中,采用铸造CAE技术对铸件进行流场的充型及凝固模拟,可以直观地反映出铸件的凝固顺序以及缩松等结果,有效地缩短产品研发、试制周期,提高生产效率。Structure and technical requirements of small stop ring were introduced.The original casting method design scheme was described in detail.Through mold filling,solidification and shrinkage porosities simulation and analyse,it was found that the solidification process of castings was not ideal,and the riser neck was solidified prematurely,so there was a risk of shrinkage porosities.After that,by changing flat plate-shaped riser neck into flat globular-shaped neck with radius of 50 mm,the ideal directional solidification mode of nodular iron was realized and the shrinkage porosities defect was effectively avoided.The following conclusions were obtained:using casting CAE technique to simulate mold filling process and solidification process in the casting method design could directly reflect the solidification sequence and shrinkage porosities of castings,and thereby effectively shorten product development and trial production cycle time and improve productivity.

关 键 词：球墨铸铁 挡圈 铸造工艺 缩松 

分 类 号：TG255[金属学及工艺—铸造]