20.500.12556/RUL-107682 Analiza spojev, izdelanih z uporovnim točkovnim varjenjem in lepljenjem Analysis of joints made using resistance spot welding and adhesive bounding V avtomobilski industriji se pogosto uporablja uporovno točkovno varjenje za spajanje karoserijskih delov, vedno več pa tudi hibridni postopki spajanja. Primerjali smo uporovno točkovno zvarjene, lepljene in hibridno spajane vzorce ter opravili natezno-strižni preizkus ter vizualno in metalografsko analizo. Optimalni varilni parametri pločevine so varilni tok 7,5 kA, čas varjenja 400 ms in sila stiskanja 2,5 kN. Zaradi slabe adhezijske vezi lepljeni spojih niso dosegli željene trdnosti. Hibridni spojih imajo manjšo natezno-strižno trdnost kot varjeni, za kar je krivo lepilo na mestu varjenja. Resistance spot welding is in the automotive industry often used for welding body parts as well as hybrid bonding which is lately more and more often in use. We compared resistance spot welded, hybrid and adhesive bonded joints and did a visual inspection, tensile-shear test and metallographic analysis. Optimal welding parameters of sheet metal are welding current of 7.5 kA, welding time 400 ms and welding force of 2.5 kN. Due to poor adhesion, adhesive joints did not achieve the desired strength. Hybrid joints have lower tensile shear strength as welded joints because of adhesive in place where spot weld is made. uporovno točkovno varjenje (UTV) lepljenje primerjava spojev hibridni spoji pocinkana pločevina priprava varjencev resistance spot welding (RSW) adhesive bonding comparison of joints hybrid joints galvanized steel sheet preparation of workpieces true false false [B. Dolinar] Slovenski jezik Angleški jezik Diplomsko delo/naloga 2019-05-12 07:46:10 2019-05-12 07:46:11 2023-11-17 13:03:42 0000-00-00 00:00:00 2019 0 Ljubljana 0 XXII, 62 str. 0000-00-00 NiDoloceno NiDoloceno NiDoloceno 0000-00-00 0000-00-00 0000-00-00 621.791.76(043.2) 212292 16631835 3496.pdf 3496.pdf 1 8247E0C63D78C452E2E25EAECC9165DC f41647afcd1ce18b886f875e64251f08d3fd6bc752e23b4482918a08d0bcde47 7d47fc49-a1b6-11eb-a523-00155dcfd717 https://repozitorij.uni-lj.si/Dokument.php?lang=slv&id=118560 Fakulteta za strojništvo 0 0 0