20.500.12556/RUL-161659 Optimalni parametri za 3D tiskanje polivinil alkohola Optimal parameters for 3D printing of PVA Tiskanje s tehnologijo ciljnega nalaganja je postalo zelo razširjeno v moderni proizvodnji. Kljub zelo pospešenemu razvoju te tehnologije so še vedno razvidne njene slabe lastnosti, ki so povezane s slabimi mehanskimi lastnostmi končnega izdelka in nizko produktivnostjo. V nalogi smo se osredinili na iskanje optimalnih procesnih parametrov za 3D-tisk materiala PVA ob ohranjanju mehanskih lastnosti in geometrijskih toleranc končnega izdelka. Spreminjali smo hitrost premikanja tiskalne glave in temperaturo predgrevanja sloja s silikonskim grelcem. Za izdelavo načrta poskusov smo uporabljali metodo odzivnih površin (angl. Response surface). Za testiranje mehanskih lastnosti končnega izdelka smo uporabili natezni preizkus. Preverjali smo tudi dimenzijska odstopanja. Pokazali smo, da zaradi omejene zmogljivosti koračnih motorjev, hitrost tiskalne glave ni linearno povezana s časom 3D-tiskanja. Izmerili smo, da hitrosti tiskalne glave negativno vpliva na mehanske lastnosti in konsistentnost 3D-tiskanja PVA. Dokazali smo, da višja temperatura predgrevanja pozitivno vpliva na mehanske lastnosti in negativno vpliva na natančnost 3D-tiskanja PVA. Printing with the technology of selective deposition has become very common in modern manufacturing. Despite the rapid development of this technology, there are still evident drawbacks associated with poor mechanical properties of the final product and low productivity. In the task, the focus was on finding optimal process parameters for 3D printing of PVA material while maintaining the mechanical properties and geometric tolerances of the final product. The speed of the print head movement and the preheating temperature of the layer with a silicone heater were varied. The design of experiments was created using the response surface method. A tensile test was used to test the mechanical properties of the final product. Dimensional deviations were also checked. It was shown that due to the limited capacity of the stepper motors, the speed of the print head is not linearly related to the 3D printing time. It was measured that the speed of the print head negatively affects the mechanical properties and consistency of 3D printing of PVA. It was proven that a higher preheating temperature positively affects the mechanical properties and negatively affects the accuracy of 3D printing of PVA. 3D-tiskanje polivinil alkohol tehnologija ciljnega nalaganja natezni preizkus aditivne tehnologije hitrost 3D-tiska predgrevanje 3D-printing polyvinyl alcohol fused deposition modeling tensile test additive technologies 3D printing speed preheating true false false Slovenski jezik Angleški jezik Magistrsko delo/naloga 2024-09-13 07:31:47 2024-09-13 07:31:52 2024-12-06 11:50:10 0000-00-00 00:00:00 2024 0 0 XVI, 64 str. 2024 0000-00-00 NiDoloceno NiDoloceno NiDoloceno 0000-00-00 0000-00-00 0000-00-00 621.9.04:620.17:338.3(043.2) 265726 217996035 37244.pdf 37244.pdf 1 3E8997A84CC3AD0ADF60E4418D7736CE 1be9f1583ee31a194043eab0eb53860a8290ed601c3c37793b86b7d22eb21fa6 6b0da44b-7191-11ef-b232-0050569b8976 https://repozitorij.uni-lj.si/Dokument.php?lang=slv&id=190628 Fakulteta za strojništvo 0 0 0