Optimization of investment casting process for K477 superalloy aero-engine turbine nozzle by simulation and experiment

作     者：Xin Hao Guo-huai Liu Ye Wang Shi-ping Wu Zhao-dong Wang Xin Hao;Guo-huai Liu;Ye Wang;Shi-ping Wu;Zhao-dong Wang

作者机构：AECC South Industry Company LimitedZhuzhou 412002HunanChina State Key Laboratory of Solidification ProcessingNorthwestern Polytechnical UniversityXi'an 710072China State Key Laboratory of Rolling and AutomationNortheastern UniversityShenyang 110819China School of Materials Science and Chemical EngineeringHarbin University of Science and TechnologyHarbin 150001China School of Materials Science and EngineeringHarbin Institute of TechnologyHarbin 150001China 

出 版 物：《China Foundry》 (中国铸造（英文版）)

年 卷 期：2022年第19卷第4期

页      面：351-358页

核心收录：

学科分类：08[工学] 080502[工学-材料学] 0805[工学-材料科学与工程（可授工学、理学学位）] 

主　　题：nickel-based superalloy investment casting shrinkage porosity simulation optimization 

摘      要：In order to reduce the shrinkage porosity of nickel-based superalloy castings in the investment casting process,the effects of different gating systems on mold filling,solidification process,and prediction of shrinkage porosity of aero-engine turbine nozzle castings were investigated by simulation and experimental *** show that the design of the vertical runner would cause greater turbulence of the melt in the riser during the mold filling process,and the outer runner is not *** the decrease in number of runners,the hot spot moves down towards the casting,and the shrinkage and porosity defects are formed in the casting below the *** the original designs,a certain tendency of shrinkage and porosity defect is found in the vanes,inner rings,and outer rings of the castings by both simulation prediction and ***,based on the processing optimization,the aero-engine turbine nozzle casting with no shrinkage and porosity defects is obtained.