压边冒口在汽车发动机缸盖上的应用

Application of Connor Feeder on Cylinder Head for Automobile Engine

对单体缸盖的几种铸造工艺方案进行评述,包括:(1)中部分型,分型面进铁工艺;(2)中部分型,垂直内浇道进铁工艺;(3)侧置顶部雨淋浇注系统工艺;(4)端部顶面压边冒口工艺。指出方案4为最佳方案。用方案4小批试生产K系列缸盖50件,无一件因缩松引起泄漏而报废。

Several casting methods used for single cylinder head was reviewed including： a） parting at middle of casting and gating at the mold joint： b）parting at middle of casting and gating with vertical slot ingates; c） casting being vertically positioned with one of the side surfaces as bottom, gating through the casting top surface with shower gates ; d） gating through a Connor feeder set on the top surface of the end of the casting. It was pointed out that the method d） is the best one. As a trial, this method had been adopted to produce50 pcs of K-series cylinder heads and no one of them was rejected due to shrinkage-caused leakage defect.