精密铸造不锈钢双吸叶轮工艺研究  

Investment Casting Double Suction Stainless Steel Impeller

作　　者：叶宗林 李兴龙 张年玉 李福琴 张传书 俞玉国 

机构地区：[1]安徽应流机电集团技术中心

出　　处：《特种铸造及有色合金》2015年第2期169-171,共3页Special Casting & Nonferrous Alloys

摘　　要：根据双吸叶轮的结构特点及质量要求，采用熔模精密铸造工艺生产。通过Magma软件对充型、凝固过程进行模拟．优化了工艺设计方案。叶轮立浇，采用大流量快速充型、两边同时进钢水，保证浇注时型壳温度在800～900℃范围内。设置排气冒口．运用内冷铁技术、插入冷型壳等，有效解决了中心轮毂缩松、叶片冷隔等缺陷。Double suction stainless steel impeller was produced by investment casting according to its structure characteristics and quality requirements. In order to eliminate the casting defects such as cen- tral hub of shrinkage and blade cold shut, some measures were considered by simulating filling and solid- ification process through Magmasoft software to optimize gating system, including vertical casting with using both sides of high flow and fast filling and into the liquid steel at 800~900℃ ,setting the exhaust riser, using internal chill or cold type shell technology.

关 键 词：双吸叶轮 凝固充型 内冷铁 排气冒口 

分 类 号：TG249.5[机械工程—精密仪器及机械]