20.500.12556/RUL-172136 Vrtanje v Al in Ti zlitino z dovajanjem plinov brez uporabe hladilno-mazalnih sredstev Drilling of Al and Ti alloys using inert gases without cutting fluids Glavni namen te diplomske naloge je z eksperimentom ugotoviti, kakšen vpliv imajo različni inertni plini na vrtanje s karbidnimi svedri v aluminijeve in titanove zlitine. Za eksperiment smo uporabili sveder iz karbidne trdine premera 6,8 mm, ki ima luknjo za dovajanje hladilno-mazalnih sredstev na rezalno mesto. Za hlajenje smo uporabljali tri hladilne pline pod tlakom 9 bar. Ti plini so bili komprimiran zrak, ogljikov dioksid (CO$_2$) in argon. Vrtali smo v aluminijevo zlitino Al 2000 serije in titanovo zlitino Ti-6Al-4V. Pri preizkusu smo z merilno celico merili podajalne sile in rezalne momente. Zajete podatke smo analizirali s pomočjo programske opreme NI LabVIEW. Za opazovanje obrabe smo sveder po koncu preizkusa pregledali pod optičnim digitalnim mikroskopom. Z eksperimentom smo ugotovili, da pri vrtanju v aluminijevo zlitino izbira plina nima velikega vpliva na sile in momente, nekoliko pa vpliva na obrabo. Pri vrtanju titanove zlitine kaže uporaba argona na precejšnje zmanjšanje podajalnih sil, ne vpliva pa na rezalne momente in obrabo. The main objective of this study was to experimentally determine the influence of different inert gases on drilling aluminium and titanium alloys with carbide drills. For the experiment, a carbide drill with a diameter of 6.8 mm, featuring an internal channel for delivering coolant to the cutting zone, was used. Three cooling gases were applied at a pressure of 9 bar: compressed air, carbon dioxide (CO$_2$), and argon. Drilling was performed on an aluminium alloy of the 2000 series and a titanium alloy Ti-6Al-4V. During the tests, feed forces and cutting torques were measured using a load cell, and the collected data were analysed using NI LabVIEW software. Tool wear was assessed after each test using an optical digital microscope. The results showed that in drilling the aluminium alloy, the choice of gas had little effect on forces and torques, but slightly affected tool wear. In drilling the titanium alloy, the use of argon resulted in a significant reduction of feed forces, but had no notable effect on cutting torque or wear. vrtanje suha obdelava inertni plini rezalne sile obraba aluminijeve in titanove zlitine drilling dry machining inert gasses cutting forces tool wear aluminium and titanium alloys true false false Slovenski jezik Angleški jezik Diplomsko delo/naloga 2025-09-06 08:30:49 2025-09-06 08:30:55 2025-10-07 03:32:00 0000-00-00 00:00:00 2025 0 0 XX, 44 str. 2025 0000-00-00 NiDoloceno NiDoloceno NiDoloceno 0000-00-00 0000-00-00 0000-00-00 621.95:66.096.1:669.715(043.2) 275628 249081347 43482.pdf 43482.pdf 1 4EE08CC6B68D21E3BA43DD74D76C400C 348c05f73eafa40c67574cc18339727609a406f3748082fa25ebb111c31c23ca e43e6d04-8aea-11f0-9328-0050569b8976 https://repozitorij.uni-lj.si/Dokument.php?lang=slv&id=215936 Fakulteta za strojništvo 0 0 0