20.500.12556/RUL-102835 Oblikovno obločno navarjanje konstrukcijskega jekla Wire and arc additve manufacturing of structural steel Konstrukcijsko jeklo predstavlja enega izmed najpogosteje uporabljenih materialov na področju strojništva. Zaradi vse večje geometrijske zapletenosti izdelkov, ki jih ne moremo izdelati z konvecionalnimi tehnologijami so se v zadnjih letih razvile aditivne tehnologije. Uporaba aditivnih tehnologij omogoča izdelavo takšnih izdelkov. Naloga je osredotočena na raziskavo oblikovnega obločnega navarjanja konstrukcijskega jekla. Preizkusi so izvedeni z uporabo CNC stroja in sinergijskega vira toka. Vzorci so izdelani s postopkom varjenja MIG/MAG (angl. Metal active gas / Metal inert gas) in s programom varjenja za manjše brizganje (angl. low spatter) ob uporabi varilne žice G3Si1 premera 1,2 mm. V okviru diplomske naloge smo preučili vpliv procesnih parametrov, ki omogočajo izdelavo kakovostnih sten. Rezultati naloge kažejo, da je ob uporabi ustreznih varilnih parametrov in medvarkovne temperature mogoče izdelati stene s širino do 9,11 mm ob izkoristku materiala nad 90 %. Ob izdelavi tako širokih sten lahko te naknadno obdelamo in izdelamo tankostenske izdelke visoke natančnosti. Structural steel is among the most widely used material in mechanical engineering. Due to the increasing geometric complexity of products, which precludes the use of conventional technologies, recent years have seen the development of additive manufacturing technologies that make the manufacture of such products practical. This thesis focuses on the research of shape-deposition wire-arc additive manufacturing using structural steel. The experiments were carried out using a CNC machine and a synergic power source. The samples were manufactured by a MIG/MAG welding process using a low spatter welding programme and G3Si1 welding wire of 1.2 mm diameter. Within the scope of this diploma thesis, we researched the effects of process parameters that facilitate the manufacture of quality walls. The results show that choosing appropriate welding parameters and interpass temperatures allows fabrication of walls of up to 9.11 mm thickness with a material utilisation rate of over 90 %. Walls manufactured in this thickness can be subsequently processed to yield thin-walled products of highly accurate shape. konstrukcijsko jeklo varjenje navarjanje aditivne tehnologije obločno navarjanje z žico (WAAM) 3D tiskanje structural steel welding metal additive manufacturing additive technologies wire - arc additive manufacturing (WAAM) 3D printing true false false [J. Štepec] Slovenski jezik Angleški jezik Diplomsko delo/naloga 2018-09-08 07:47:46 2018-09-08 07:47:47 2022-08-16 03:38:23 0000-00-00 00:00:00 2018 0 0 0000-00-00 NiDoloceno NiDoloceno NiDoloceno 0000-00-00 0000-00-00 0000-00-00 621.791.75:669.14(043.2) 208128 16406811 2323.pdf 2323.pdf 1 DAAF93C088FC164912D645183122D3BC cc474a09ea393c69da19a52db9e28a3b924f3c4f21d776fe24fc11090adb20f1 a2d1a21b-a1b5-11eb-a523-00155dcfd717 https://repozitorij.uni-lj.si/Dokument.php?lang=slv&id=113206 Fakulteta za strojništvo 0 0 0