摘要
为简化高牌号灰铸铁侧盖铸件的铸造工艺,不用砂芯,将分型面下移,结果引起了缩松缺陷,废品率高达50%左右。对引起缩松的原因进行了分析,并采取了相应的工艺措施,上下底面同时加冷铁,消除了缩松缺陷。
In order to simplify the casting method used for a hi-strength gray iron side cover casting and cancel the sand core, the parting line together with ingates were moved downwards. As a result, shrinkage defects were caused, and the rejection rate was of about 50%. The reason causing shrinkage defect was analyzed, and the following measure was adopted： setting chills on both the top and bottom surfaces of the casting. The shrinkage was finally eliminated and the qualification rate of castings was increased up to more than 90%.
出处
《现代铸铁》
CAS
2007年第6期30-31,共2页
Modern Cast Iron
关键词
热节
浇注系统
冷铁
hot spot
gating system
chills
