Study on Scale Control and Casting Technology of Thick and Middle-separated Surface Multistage Centrifugal Pump
Author of the article:HAN Yabin;ZHENG Fei;LIU Dongdong
Author's Workplace：Luoyang Sunrui Special Equipment Co.,Ltd.,Luoyang 471000,China
Key Words：duplex stainless-steel casting multistage centrifugal pump scale design numerical simulation
Abstract：The multi-stage pump with thick and middle-separated surface was modeled by 3D software,and the multi-zone sequential solidification process was designed.The casting shrinkage rate was analyzed,and the scale design of 4A duplex-phase stainless steel multi-stage pump was determined.With the help of numerical simulation technology,the whole process of casting filling and solidification process was simulated.By comparing the results of two kinds of technological schemes,the casting defects and their locations were analyzed,and the best technological scheme was selected,i.e.,the middle opening facing bottom injection,which ensured the smooth and complete filling of molten steel.The results show that the optimized casting process is adopted to trial-produce the sample,and the quality meets the design requirements and the use requirements,which provides a reference for the production of the same type of casting.
