HSi80-3硅黄铜船用舵盖铸件精铸工艺的凝固模拟

运用Procast软件对HSi80-3硅黄铜船用舵盖零件在两种浇注工艺方案下的凝固过程进行模拟计算,在此基础上分析探讨了该铸件可能产生缩孔或缩松的部位。模拟显示第一种浇注工艺会在零件主体部位产生严重缩孔,而第二种浇注工艺则能自下而上顺序凝固,避免缩孔或缩松的产生,据此确定了第二种铸造工艺方案,并采用试验进行验证。结果表明,此浇注工艺没有产生技术要求缺陷,证明了凝固模拟的可行性。

Solidification Simulation for HSi80-3 Silicon Brass Rudder Bonnet

The solidification simulation for HSi80-3 silicon brass rudder bonnet by the Procast software has been conducted based on two kinds of gating systems to investigate the potential shrinkage hole (porosity) position in the castings. The results show that the severe shrinkage hole in the main body of the rudder bonnet can be visualized by using the first filling process while the shrinkage hole (porosity) can be effectively eliminated by the second filling process due to order solidification from top to bottom. Based on above simulated results, the second filling process was adopted, and production verification has been conducted. The results show that the defects, including shrinkage hole (porosity), can be eliminated by adopting second filling process, showing the availability of solidification.