熔模铸造新型镍铝青铜合金阀体  

Investment Casting Novel Ni-Al Bronze Alloy Valve Body

作　　者：杨芬芬 李振彦 宋祥阳 陈君逸 潘源 Yang Fenfen;Li Zhenyan;Song Xiangyang;Chen Junyi;Pan Yuan(College of Engineering and Technology,Zunyi Normal University;Dalian Marine Valve Co.,Ltd.)

机构地区：[1]遵义师范学院工学院 [2]大连船用阀门有限公司

出　　处：《特种铸造及有色合金》2023年第5期704-709,共6页Special Casting & Nonferrous Alloys

基　　金：国家自然科学基金项目资助(52101062);贵州省省级科技计划资助项目(黔科合基础-ZK[2021]一般239);遵义市科技计划资助项目(遵市科合HZ字(2021)203号);遵义师范学院博士基金资助项目(遵师BS[2020]6号)。

摘　　要：为验证新型镍铝青铜合金应用于阀体生产的可行性,采用熔模铸造工艺,模拟分析了阀体铸件的凝固过程,针对原始模拟方案产生的缩孔、缩松及冷隔等缺陷,进行了铸造工艺方案优化。结果表明,采用立式放置、阶梯式浇注方式,并在最厚位置处增加补缩通道,可消除阀体铸件的缩孔、缩松及冷隔等缺陷。经试制生产验证,浇注后的铸件表面品质良好。X射线探伤结果表明铸件内部无缩孔、缩松及冷隔等缺陷,获得了优质阀体铸件。In order to verify the application feasibility of novel nickel-aluminum bronze alloy to the valve body production,solidification process of investment casting valve body casting was simulated and analyzed by numerical software,and the initial casting process scheme was optimized according to the analysis of shrinkage porosity and cold shut.The results indicate that the shrinkage porosity and cold shut defects can be eliminated thoroughly when vertical placement and step gating system are adopted,and feeding channels are added in the thickest location.The simulation results were verified by trial production,and results reveal that the surface quality of valve body casting is satisfied.X-ray detection results demonstrate that absence of casting defects such as shrinkage porosity and cold shut is found in the valve body,and valve body casting with high quality can be produced.

关 键 词：阀体 熔模铸造 模拟分析 工艺优化 缩孔缩松 

分 类 号：TG249.5[机械工程—精密仪器及机械] TG146.11[金属学及工艺—铸造]