摘要
采用有限元分析软件ProCAST模拟了K438合金液在熔模铸造工艺中的充型凝固过程,分析了两种浇注系统(方案1,冒口和横浇道均采用10 mm的网格,而叶片整体采用4 mm的网格进行划分;方案2,冒口、横浇道、直浇道和压头均采用10 mm的网格,而叶片整体采用4 mm的网格进行划分)的固相率分布、凝固时间分布和凝固过程中叶片所产生缺陷的严重程度。模拟结果表明:两套浇铸系统的设计方案都比较合理,方案2的整体凝固速度快于方案1,方案2的缩松严重程度少于方案1。
The filling and solidification process of K438 alloy liquid in investment casting process were simulated using the Procast software of finite element analysis. The solid fraction distribution, solidification time distribution and the severity of defects of blades produced in the solidification process of the two kinds of casting system（Plan 1, riser and cross gate adopt 10 mm grid, and leaves overall use of 4 mm grid division; Plan 2, riser, cross gate, sprue and pressure head adopt 10 mm grid, and leaves overall use of 4 mm grid division） were analyzed. The simulation results show that the schemes designed by two sets of casting systems were reasonable, the solidification velocity of plan 2 is faster than that of plan 1, and the shrinkage severity of plan 2 is less than that of plan 1 in the same time.
出处
《铸造技术》
CAS
北大核心
2015年第2期396-398,共3页
Foundry Technology
基金
辽宁省自然科学基金资助项目(2013024011)
关键词
叶片
熔模铸造
数值模拟
固相率
缩松
blade
investment casting
numerical modeling
solid fraction
shrinkage porosity
