泵用新型高效叶轮的铸造工艺  

Casting Process of New Pump Impeller

作　　者：张秦 张金光 麦继良 李建国 

机构地区：[1]上海凯士比泵有限公司,上海200245

出　　处：《铸造工程》2010年第1期31-33,共3页Foundry Engineering

摘　　要：介绍了新型不锈钢叶轮的结构特点，通过对砂型铸造叶轮工艺方案的改进设计，系统分析了凹坑类气孔缺陷产生的原因。工艺试验结果表明，采用碱性酚醛树脂砂制芯和平做立浇工艺等方法，可消除由于排气不畅使叶轮产生的凹坑类气孔缺陷。The structural feature of new type stainless steel impeller made by sand casting was introduced. By the improvement to casting process of impeller, the cause of pit defect appeared on the middle plate in production was analyzed. The test result shows that the pit defect can be eliminated by alkaline phenolic resin sand core, horizontal parting and vertical pouring system.

关 键 词：叶轮 铸造工艺 凹坑缺陷 平做立浇 碱性酚醛树脂砂 

分 类 号：TG244.2[金属学及工艺—铸造]