摘要
对铸铁件涡轮箱盖进行了铸造工艺设计。根据铸件形状的特点,设计了顶注式浇注系统和3个内浇道同时对铸件浇注。利用CAD软件建立铸件的三维模型,并用ViewCast铸造模拟软件对铸件的凝固过程进行了数值模拟。模拟显示,在涡轮箱盖壁与壁的连接处会产生缩孔、缩松缺陷。根据数值模拟结果并结合理论分析,对铸造工艺方案进行工艺改进。通过去除冒口和增设冷铁的方法,增加圆形区域的冷却速度。结果表明,优化后的工艺有效地消除了缩松、缩孔缺陷,从而获得了合理的铸造工艺方案。
The casting process of cast rion turbine cover was designed. Based on the shape characteristics of castings, the top gating system and three ingatcs were defined. The 3-D model of the castings was build by CAD software, then the casting simulation software ViewCast was employed to simulate the solidification process of the castings. The initial simulation indicated that the shrinkage defects formed at the connecting sections between walls. According to the results and combined with analysis, the casting process program was optimized by removing the risers and adding the chills. The results show that the shrinkage defects are eliminated effectively, so the reasonable scheme of the castings process is obtained.
出处
《热加工工艺》
CSCD
北大核心
2011年第23期70-72,共3页
Hot Working Technology
关键词
涡轮箱盖
数值模拟
凝固过程
工艺优化
turbine cover
numerical simulation
solidification process
process optimization
