20.500.12556/RUL-130446 Ultrazvočna kontrola kakovosti zvarnih spojev Ultrasonic quality examiniation of welded joints Delo obravnava področje ultrazvočne kontrole zvarnih spojev pri certificiranju varilcev. Varjenje MIG/MAG je najbolj pogost postopek spajanja jeklenih konstrukcijskih elementov v celoto. Čeprav je postopek enostaven in primeren za robotizacijo, še vedno velik delež varjenja v industriji opravijo certificirani varilci. Ultrazvočna kontrola je zelo razširjena in ima pomembno vlogo pri ugotavljanju kakovosti zvarov tekom postopka certificiranja varilcev. S samim preizkušanjem zvarov pred uporabo varjenih konstrukcij lahko občutno zmanjšamo kasnejše stroške vzdrževanja in popravil. Opravili smo neporušno kontrolo zvarov, ki sta jih izdelala dva različno izkušena varilca z različnimi varilnimi parametri. Kakovost zvarov smo raziskali z neporušno metodo ultrazvočnega preizkušanja. Ugotovili smo, da se kakovost zvara od varilca do varilca razlikuje, in da je pomembno, da se, z namenom zagotavljanja kakovosti varjenja, varilce ustrezno izobrazi in certificira. This study is about ultrasonic examination of welded joints in testing of welders. MIG/MAG welding is one of the most common processes of welding steel structural elements. Even though this welding method is quite simple and appropriate to robotize, there is still needed many certified welders in the industry. Ultrasonic examination is widespread and has a big role in testing of welded joints during the process of certification of welders. Apart from that, we can reduce maintenance expenses by inspecting the welds with ultrasound before allowing the construction to be used in industrial environment. The tested welds were made by two different experienced welders who used different welding parameters. The quality of welds was inspected using non-destructive method of ultrasonic examination. It was concluded that quality of welds varies from welder to welder and that it is important that welders are properly trained and certified in order to ensure the quality of welding. varjenje MIG/MAG varjenje varivost jekel napake pri varjenju neporušitvene preiskave ultrazvočna preiskava eho welding MIG/MAG welding weldability welding defects non-destructive testing ultrasonic testing echo true false false [K. Koren] Slovenski jezik Angleški jezik Zaključna naloga 2021-09-15 08:30:53 2021-09-15 08:30:55 2022-09-09 04:16:28 0000-00-00 00:00:00 2021 0 Ljubljana 0 XIV, 34 str., [4] str. pril. 0000-00-00 NiDoloceno NiDoloceno NiDoloceno 0000-00-00 0000-00-00 0000-00-00 1970-01-01 621.791.75:620.179.1(043.2) 233937 84343811 10937.pdf 10937.pdf 1 05534DAD44FA8A5CD31A897B58869431 447d5d636db56da114899094c411dbff2c7b1a034c23f4e85749eff9f2201d48 39446eee-15ee-11ec-a523-00155dcfd717 https://repozitorij.uni-lj.si/Dokument.php?lang=slv&id=147557 Fakulteta za strojništvo 0 0 0