20.500.12556/RUL-155506 Optimizacija prekrivanja navarov iz različnih materialov za dosego ravnih površin Optimizing the overlap of layers from different materials to achieve flat surfaces Več-materialno oblikovno obločno navarjanje z žico je princip nanašanja kovin, kjer za pridobitev kakovostnih površin potrebujemo pravi pristop z uporabo več različnih modelov. S temi modeli, vpeljanimi za dodajna materiala iz malolegiranega in nerjavečega jekla, smo ustvarili ustrezne procesne parametre za ohranjanje enake višine navarov in njihovo prileganje parabolični obliki. Postopek aditivne proizvodnje je alternativa tradicionalnim obdelovalnim postopkom z odvzemanjem, s katerim izdelamo kompleksnejše oblike ter skrajšamo čas in stroške proizvodnje. Osredotočili smo se na izboljšanje kakovosti površine, kar je še posebej pomembno pri različnih materialih, kjer navarimo različne širine navarov. Pri iskanju optimalnega premika varilnega gorilnika, so se pri navarjanju prekrivnih navarov pojavile razlike med teoretičnimi izračuni in eksperimentalnimi ugotovitvami. Nanje so vplivale lastnosti uporabljenih materialov in površinska napetost v talini. Ugotovljeno je bilo, da je pomemben dejavnik, ki vpliva na navarjanje, tudi medvarkovna temperatura. Multi-material wire and arc additive surfacing is a principle of metal deposition, where to obtain quality surfaces, we need the right approach using several different models. With these models, implemented for low-alloy and stainless steel, we have created adequate process parameters for maintaining the same height of the weld beads and their parabolic shape. The additive manufacturing method is an alternative to the traditional machining process with subtraction, with which we produce more complex shapes and reduce the time and cost of production. We focused on improving quality of the surface, which is especially important for dissimilar materials, where we weld different widths of welds. While experimenting the optimal welding torch movements in overlapping weld surfacing, differences between theoretical calculations and experimental findings appeared. Those were influenced by the properties of the used materials and the surface tension in the molten pool. An important influencing factor for weld surfacing was found to be also the interpass temperature. navarjanje oblikovno obločno navarjanje z žico varjenje MIG/MAG varilni parametri optimalna razdalja prekrivanja malolegirano in nerjavno jeklo 3D sestavljanje slik weld surfacing wire arc additive manufacturing MIG/MAG welding welding parameters optimal overlap distance low-alloyed and stainless steel 3D stitching true false false [M. Bahor] Slovenski jezik Angleški jezik Diplomsko delo/naloga 2024-04-05 08:30:38 2024-04-05 08:30:43 2024-04-24 08:25:16 0000-00-00 00:00:00 2024 0 Ljubljana 0 XX, 54 str. 0000-00-00 NiDoloceno NiDoloceno NiDoloceno 0000-00-00 0000-00-00 0000-00-00 621.791.75:669.14:620.179.2(043.2) 260069 193639683 33038.pdf 33038.pdf 1 0AB43004ADEF43FBAA2DA1B32270A324 ab271bcf257bd5b0925239473dbf6bc93d1103d32a40ccd90a555e4458849f04 06c60a96-f316-11ee-afc9-0050569b8976 https://repozitorij.uni-lj.si/Dokument.php?lang=slv&id=182439 Fakulteta za strojništvo 0 0 0