Research on Precision Casting Technology of M3402 Stainless Steel Pump Case for Electric Pump of Emergency Diesel Generator Set
According to the material composition and mechanical properties requirements and the structural sizes of the austenitic-ferritic stainless pump case for the electric pump of emergency diesel unit,the initial precision casting molding process of the pump case was designed,the pouring system was optimized after first production,and the casting process simulation of the pump case after process optimization was carried out by using ProCAST to verify the feasibility of the process.Finally,the trial production of the castings was carried out by using the optimal process.The results show that the defect position is effectively predicted by using the ProCAST casting process simulation,and the feasibility of the process after the optimization of pouring system is verified.The sizes of the pump case casting meets the accuracy requirements,without crack and porosity defects,and the ferrite content of the material is about 13.5%,and the mechanical properties meet the testing requirements of the mechanical properties of M3402 casting.
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