基于数值模拟的铸钢凸圈消失模铸造工艺方案设计

Design of Lost Foam Casting Process for Cast Steel Convex Ring Based on Numerical Simulation

在铸钢凸圈开发初期,针对其结构特点,进行了消失模铸造工艺性分析,设计出了两种工艺方案。利用华铸CAE软件对两种设计方案的充型和凝固过程进行了模拟,筛选出了较优工艺方案。结果表明:采用凸圈大断面朝上的工艺方案,其充型过程平稳,补缩效果好,重要表面无明显缩松、缩孔缺陷,且该方案泡沫模样粘结组装便利。通过实际生产验证,铸件质量满足用户要求。

At the initial stage of cast steel convex ring′s development,according to its structural characteristics,the lost foam casting process analysis was carried out,and two process schemes were designed.InteCAST software was applied to simulate filling and solidification processes of two projects,respectively.The better design project was selected out.The results showed that for the process scheme of convex ring with large section upward,the filling process was smooth,the feeding effect was better,and there were no obvious shrinkage defects on the important surface.Moreover,the foam pattern was easy to be bonded and assembled.Through the actual production verification,the casting quality met the user's requirements.