20.500.12556/RUL-109729 Parametrična analiza oblikovnega obločnega navarjanja jekla 15-5 PH Parametric analysis of wire and arc additive manufacturing with 15-5 PH steel V delu je obravnavano oblikovno obločno navarjanje z martenzitno nerjavno žico 15-5 PH. Izziv je v iskanju parametrov, ki zagotavljajo stabilen proces ter v iskanju relacij in interakcij med procesnimi parametri in merjenimi izhodnimi kontrolnimi faktorji. Z načrtovanimi eksperimenti se je raziskovalo: a) vpliv različne dolžine prostega konca žice na merjeno obločno napetost in jakost varilnega toka, b) vpliv finih nastavitev pulzne dinamike pri pulznem varjenju na geometrijo varkov in na količino brizganja in c) vpliv jakosti varilnega toka, obločne napetosti in medvarkovne temperature na geometrijo oblikovno navarjenih izdelkov in na stabilnost delovanja procesa. Ugotovili smo, da je s spremljanjem obločne napetosti in jakosti varilnega toka med procesom varjenja možno sklepati na dolžino prostega konca žice. Ugotovili smo relacijo med finimi nastavitvami pulzne dinamike in količino brizganja med varjenjem. Ugotovili smo relacije med procesnimi parametri in geometrijo oblikovno navarjenih izdelkov. Navarili smo testni izdelek z optimalnimi parametri za najstabilnejše delovanje procesa in željeno geometrijo slojev. In this thesis wire and arc additive manufacturing with a 15-5 PH martensitic stainless steel wire is researched. The problem is in finding the correct parameters which allow for a stable process and in finding relations and interactions between process parameters and measured control factors. With designed experiments the following was explored: a) influence of the wire stick out length on the welding voltage and current, b) influence of fine tuning pulse dynamics in pulse welding on weld bead geometry and ammount of spatter and c) influence of the welding current, voltage and weld interpass temperature on the geometry of welded layers and on the process stability. It was established that it is possible to correlate wire stick out length to the value of welding voltage and current. We established the relation between pulse dynamics parameters and amount of spatter during welding. We discovered the relation between process parameters and the geometry of the wire and arc additive manufactured layers of products. We manufactured a test product with optimized parameters for the most stable process and desired geometry of the layers. varjenje aditivne tehnologije oblikovno obločno navarjanje z žico načrtovanje eksperimentov optimizacija procesa nerjavno jeklo 15-5 PH welding additive manufacturing wire and arc additive manufacturing design of experiments process optimization stainless steel 15-5 PH true false false [A. Ščetinec] Slovenski jezik Angleški jezik Magistrsko delo/naloga 2019-09-07 07:46:20 2019-09-07 07:46:23 2022-08-21 03:44:05 0000-00-00 00:00:00 2019 0 Ljubljana 0 XXII, 69 str. 0000-00-00 NiDoloceno NiDoloceno NiDoloceno 0000-00-00 0000-00-00 0000-00-00 621.791.75:669.14(043.2) 216178 16928795 4078.pdf 4078.pdf 1 6540FE146BDF95C7364133C75E5DFA6F 2db169f4ac76ea2f1a6d280663554be62f47b01862a65c48929bf7674288d37d f0e54830-a1b6-11eb-a523-00155dcfd717 https://repozitorij.uni-lj.si/Dokument.php?lang=slv&id=121320 Fakulteta za strojništvo 0 0 0