基于华铸CAE的R3球阀阀体铸造工艺优化

Optimization of R3 Ball Valve Body Casting Process Based on InteCAST

R3球阀阀体在铸造生产中,在两边法兰下部夹窝处发现大量缩松,导致阀体在试压时产生泄露。使用华铸CAE软件对R3球阀阀体熔模铸造过程进行了模拟,模拟结果与实际产品相符。基于上述结果,对原工艺尺寸、结构更改设计进行了优化,并进行数值模拟验证与生产验证,结果显示,优化后的方案有效遏制缩松产生,提高了铸件的合格率。

In the casting production of R3 ball valve body, a lot of shrinkage porosity defect were found in the lower jacket of flanges on both sides, resulting in leakage of valve body during the pressure test. In the present study, the InteCAST software was employed to simulate the investment casting process of R3 ball valve body. Based on the simulation results which was consistent with the actual produced casting, the original gating and feeding system and casting structure were improved, and the numerical simulation and production verification were carried out. The results indicate that the optimized design can effectively eliminate or reduce shrinkage porosity and increase the qualified rate of castings.