Abstract
The research on hydraulic machines in industries is appropriate for many reasons. This paper deals with the creation of 3D prototypes of impellers of hydraulic machines printed from ABS plastic and verification of operating characteristics compared to conventional steel impellers of pump and also in turbine mode. The work includes properties, composition and verification of mechanical properties of ABS for different printing methods. Practical measurements of the specific geometry of the different 3D variants of the radial one-stage centrifugal impeller from ABS compared to metal wheels in the real hydraulic circuit are described. The results of the development of experiments demonstrate that the performance characteristics of the printed impellers of all variants have very similar functional values and very identical trends of functional curves of mechanical power and overall mechanical efficiency. At the same optimal speed, the highest performance and efficiency also as the metal wheels have been produced. It is clear from the results of work that prototypes produced by 3D printing achieve optimal performance parameter values in hydraulic testing and it is possible to successfully use this advanced technology in the verification of newly developed pumps, turbines and pumps turbines.
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