隔膜阀阀体缩孔缺陷分析与改进  

Analysis and Optimization of Shrinkage Defect of Diaphragm Valve Body

作　　者：郑蕊 胡杰 王胜良 徐贵强 Zheng Rui;Hu Jie;Wang Shengliang;Xu Guiqiang(Shijiazhuang Shenghua Group Co.,Ltd.)

机构地区：[1]石家庄盛华企业集团有限公司,石家庄050800

出　　处：《特种铸造及有色合金》2023年第9期1279-1281,共3页Special Casting & Nonferrous Alloys

摘　　要：针对不锈钢隔膜阀阀体在熔模铸造生产过程中常出现缩孔、缩松缺陷,通过分析提出了相应的改进工艺方案。通过优化内浇道、调整产品壁厚、改变组树方案、改善型壳散热条件等方式,有效解决了缩孔、缩松,明显提高了铸件合格率,减少了焊补修磨的工作量,缩短了生产周期。In view of the common defects in stainless steel diaphragm valve body during investment casting,including shrinkage porosities and cavities,the corresponding improvement process was put forward.By optimizing the inner gate,adjusting the thickness of the product wall,changing the scheme of group tree and improving the heat dissipation condition of the shell,the shrinkage porosities and cavities are effectively eliminated,greatly increasing the qualified rate and reducing production cost and production cycle.

关 键 词：精密铸造 缩孔 浇注系统 型壳 

分 类 号：TG249.5[机械工程—精密仪器及机械]