长筒形铝合金铸件铸造工艺模拟仿真及工艺优化

Simulation and optimization of casting process for long cylindrical aluminum alloy parts

某长筒形铝合金件最大直径为210mm,高度为1080mm,最大壁厚为50mm,最小壁厚为20mm,筒壁常出现缩松缺陷,利用芸峰CAE软件对该铸件铸造过程模拟仿真,分析了原始工艺凝固过程产生缩松的原因,据此对铸造工艺进行优化,并在生产中应用。结果表明,在立浇的条件下,采用缝隙式浇注系统并设置冷铁及冒口,能有效解决此长筒形铝合金件的缩松缺陷,显著提高产品合格率。

A long size cylindrical aluminum alloy part has a maximum diameter of 210mm,a height of 1080mm,a maximum wall thickness of 50mm,and a minimum wall thickness of 20mm.Shrinkage defects often appear on the wall of the tube.The casting process of the casting is simulated and analyzed by Yunfeng CAE software.The reason of shrinkage porosity in the solidification process of the original process was analyzed,and the casting process was optimized and applied in production accordingly.The results show that under the condition of vertical casting,the use of slot pouring system and the installation of chilled iron and riser can effectively solve the shrinkage and porosity defects of this long cylindrical aluminum alloy part and significantly improve the product qualification rate.