20.500.12556/RUL-185367 3D tisk ohišja črpalk iz alternativnih polimernih materialov 3D printing of pump housing from alternative polymer materials V diplomski nalogi smo raziskali možnost izdelave funkcionalnega ohišja zobniške črpalke s 3D-tiskom iz alternativnih polimernih materialov kot možne zamenjave za klasično aluminijasto ohišje. Glavni namen raziskave je bil ugotoviti, kateri izmed izbranih materialov zagotavlja najprimernejšo kombinacijo trdnosti, togosti, deformabilnosti in funkcionalnosti pri obratovanju črpalke. Preizkusili smo šest materialov: PC-PBT, PA6-CF25, PA6-CF20, PA12-CF15, PA612-CF15 in TPU-CF. Njihove mehanske lastnosti smo ovrednotili z nateznimi preizkusi standardiziranih preizkušancev. Na podlagi rezultatov smo izbrane materiale uporabili za izdelavo ohišij zobniške črpalke, ki smo jih nato preizkusili v hidravličnem sistemu z merjenjem tlaka, pretoka in temperature. Največjo povprečno natezno trdnost je dosegel PA612-CF15, in sicer 73,2 MPa. Ohišje iz tega materiala je med polimernimi ohišji doseglo tudi najvišji tlak, približno 109 bar. PA6-GF25 je dosegel približno 96 bar, PA12-CF15 pa 57 bar. Referenčno aluminijasto ohišje smo testirali do tlaka 200 bar. Kot najobetavnejši material za nadaljnji razvoj se je izkazal PA612-CF15. This thesis investigates the feasibility of manufacturing a functional gear pump housing by 3D printing with alternative polymer materials as a potential replacement for a conventional aluminium housing. The main objective was to determine which selected material provides the most suitable combination of strength, stiffness, deformability, and functional performance during pump operation. Six materials were tested: PC-PBT, PA6-GF25, PA6-CF20, PA12-CF15, PA612-CF15, and TPU-CF. Their mechanical properties were evaluated by tensile testing of standardized specimens. Based on the results obtained, selected materials were used to manufacture gear pump housings, which were then tested in a hydraulic system by measuring pressure, flow rate, and temperature. PA612-CF15 achieved the highest average tensile strength of 73.2 MPa. The housing made from this material also reached the highest pressure among the polymer housings, approximately 109 bar. PA6-GF25 reached approximately 96 bar, while PA12-CF15 reached 57 bar. The reference aluminium housing was tested at a pressure of up to 200 bar. PA612-CF15 was identified as the most promising material for further development. polimerni materiali preizkušanje materialov natezni preizkusi zobniške črpalke ohišje črpalke 3D tisk polymer materials materials testing tensile tests gear pumps pump housing 3D printing true false false [M. Petrovčič] Slovenski jezik Angleški jezik Diplomsko delo/naloga 2026-08-01 08:30:28 2026-08-01 08:30:39 2026-08-12 13:52:06 0000-00-00 00:00:00 2026 0 Ljubljana 0 XIII, 33 f. 0000-00-00 NiDoloceno NiDoloceno NiDoloceno 0000-00-00 0000-00-00 0000-00-00 620.172:678.07:621.664(043.2) 287605 287618819 47577.pdf 47577.pdf 1 B98B1A0BB2C02B7AAE3B5A1A28F0595B c13c6ae4419e08f2949e648d57a1c1fb4da9a308212a92fd319f5f1a277db357 373ce122-8d72-11f1-9b0d-0050569b8976 https://repozitorij.uni-lj.si/Dokument.php?lang=slv&id=243831 Fakulteta za strojništvo 0 0 0