一种涡轮壳铸件泄漏原因分析  

Leakage Analysis of a Turbine Shell Casting

作　　者：刘俊华 闵立强 张兴玲 LIU Jun-hua;MIN Li-qiang;ZHANG Xing-ling(KOCEL Mchinery Co.,Ltd.,Ningxia Yinchuan 750021,China)

机构地区：[1]共享装备股份有限公司,宁夏银川750021

出　　处：《铸造设备与工艺》2021年第6期44-46,共3页Foundry Equipment & Technology

摘　　要：某涡轮壳铸件精加工后泄漏检测过程中出现间断性气泡,为了确定该气泡的形成原因,对涡轮壳铸件进行了内窥镜检查和铸件逐层解剖。结果表明:轴孔内侧凹处外表面存在粘砂,在压力作用下,形成了小气泡,最终导致产生铸件泄漏的假象。Intermittent bubbles appeared in the leakage test process of a turbine casting after finishing.In order to determine the causes of the bubbles,the turbine casting was examined by endoscopy and dissected layer by layer.The results show that there are sand sticking on the outer surface of the inner concave part of the shaft hole,and little bubbles are formed under the pressure,which eventually leads to the false appearance of casting leakage.

关 键 词：泄漏检测 气压检测 连续性 单一性 冒泡 漏气 粘砂 

分 类 号：TG247[金属学及工艺—铸造]