| Abstract [eng] |
In this research work, the impeller is designed in SolidWorks and developed by a 3D printer. By using the impeller as pattern cope and drag are made. Aluminium and silicon are heated at 800°C in the furnace. Then the melted aluminium and silicon are poured in the downsprue to fill the cavity. The casted impeller is machined and tested. Nowadays there are different test are made to find the strength, hardness, castability, weldability and corrosion resistance. In this study, the impeller samples are grinded and polished. For preparing the samples, the impeller is cross-sectioned and casted using synthetic resins. The samples are grinded at 300 rpm for 10 minutes using the grinding paper. After grinding it is polished using liquid diamond for 10 minutes with increasing to 300 rpm. Then the samples are examined in the optical microscope. The microscopic structure shows the image of a 10x,50x and 100x of the samples. The microhardness shows Vickers hardness values are much close enough. |
