ZL101泵壳凝固成形工艺设计数值仿真优化

针对ZL101泵壳设计了两种不同的浇铸系统,借助FEM方法完成了充型流动场、凝固固相场与疏松分布的数值计算对比分析。结果表明:采用底注式浇铸系统,合金熔体充型平稳,型腔内部充型初期卷入的气体可有效排出,凝固次序为自上而下与自内向外的逐层凝固,T5热处理后本体试样平均抗拉强度、屈服强度与延伸率分别为334.5、274 MPa与5.8%,满足了HB962-2001Ⅱ类铸件的技术指标要求。

Optimization Analysis for Solidification Process of ZL101Pump Casting by Numerical Simulation

Two different filling systems of ZL101 pump casting were designed in this paper, and the flowing field, solidification phase field and distribution of shrinkage were calculated by the FEM numerical simulation. The results show that the melt alloy fills smoothly and the gas inside the resin sand core exhaust effectively from the riser by adjusting the bottom injection casting system, which forms the solidification sequence from top to bottom and from inside to outside. The average tensile strength, yield strength and elongation of the bulk samples are 334.5MPa, 274MPa and 5.8% after the T5 treatment process, which meets the technical requirements of HB962-2001 Type II castings.