20.500.12556/RUL-118835 Vpliv zaščitnega plina pri laserskem varjenju avstenitnega nerjavnega jekla Effect of shielding gas in laser welding of austenitic stainless steel Zaključna naloga obravnava preverjanje vpliva zaščitnega plina pri laserskem varjenju avstenitnega nerjavnega jekla. Glavni razlog je pocenitev proizvodnega procesa z uporabo cenejšega zaščitnega plina dušika namesto argona. Kakovost izdelanih zvarov smo testirali vizualno, s tlačno-strižnim preizkusom in z metalografsko analizo. Ugotovili smo, da je zaščitni plin dušik dobra alternativa argonu. Po vizualni kontroli smo ugotovili, da nastane lep zvar, s tlačno-strižnim preizkusom smo dokazali, da lahko tak var zdrži obremenitve v uporabi, z metalografsko analizo pa smo pokazali, da nam tako definiran postopek zagotavlja zahtevano globino zavaritve. The final thesis discusses the influence of shielding gasses during laser welding of austenitic stainless steel. The main reason for conducting this research is the reduction of the production process costs, using a cheaper shielding gas nitrogen instead of argon. The quality of welds was tested using visually, with a pressure-shear testing and metallographic analysis. It was found that shielding gas nitrogen is a good alternative to argon. Visual inspection proved the quality of weld appearance. Pressure-shear test we proved the mechanical strength of the weld and metallographic analysis sufficient penetration depth. It was concluded that argon shielding gas can be exchanged with nitrogen at laser welding of austenitic stainless steel. lasersko varjenje avstenitno nerjavno jeklo tlačno-strižni preizkus vizualna kontrola metalografska analiza laser welding austenitic stainless steel pressure-shear test visual control metallographic analysis true false false [R. Filipčič] Slovenski jezik Angleški jezik Diplomsko delo/naloga 2020-09-01 08:31:40 2020-09-01 08:31:42 2022-08-31 03:50:07 0000-00-00 00:00:00 2020 0 Ljubljana 0 XX, 54 str. 0000-00-00 NiDoloceno NiDoloceno NiDoloceno 0000-00-00 0000-00-00 0000-00-00 621.791.7:691.714.018.8(043.2) 222911 29203459 5645.pdf 5645.pdf 1 1AA1FFC774BD1DFB6691FC08469C25A2 be10d4e795710c2528af070043892f12d0f5e7be90b729137075df6a3dbc1370 98df134b-a1b9-11eb-a523-00155dcfd717 https://repozitorij.uni-lj.si/Dokument.php?lang=slv&id=133230 Fakulteta za strojništvo 0 0 0