3D tisk ohišja črpalk iz alternativnih polimernih materialov

Petrovčič, Matevž (author), Majdič, Franc (mentor)

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.

• Language: Slovenian
• Keywords: polimerni materiali, preizkušanje materialov, natezni preizkusi, zobniške črpalke, ohišje črpalke, 3D tisk
• Work type: Bachelor thesis/paper
• Organization: FS - Faculty of Mechanical Engineering
• Year: 2026
• PID: 20.500.12556/RUL-185367
• Publication date in RUL: 01.08.2026

Secondary language

• Language: English
• Title: 3D printing of pump housing from alternative polymer materials

Abstract

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.

• Keywords: polymer materials, materials testing, tensile tests, gear pumps, pump housing, 3D printing