Research on the casting process of double-suction impeller based on sand mold 3D printing
C95820 aluminum-bronze double-suction impeller has the characteristics of large size,uneven wall thickness and complex structure,which will be prone to defects such as concentrated shrinkage porosity,oxide inclusions and porosity during casting,and it is difficult to produce by traditional casting methods.Combined with the technical advantages of sand mold 3D printing,ProCAST software was used to optimize and design the gating and riser system of the casting,which realized the smooth filling of molten metal,and the shrinkage porosity defects were mainly distributed in the gating and riser.The sand core of the key blade that affects the accuracy of the impeller is integrated design and printing,and the conformal air duct is set up inside to ensure that the gas generated by the resin sand after heating can be quickly discharged.The 3D printed sand mold assembly was poured to successfully pro-duce a high-quality aluminum-bronze double-suction impeller casting.
Double suction impellerAluminium bronzeCasting process design3D printing
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