Varjenje nerjavnih dupleks jekel : diplomska naloga univerzitetnega študija
Jančič, Uroš
V diplomi smo se osredotočali na primernost varjenja dupleks nerjavnih jekel po MAG postopku. Najprej smo poiskali pravi dodajni material, zaščitni plin smo izbrali glede na splošna priporočila, ...zavarili pa z robotom, da smo zagotovili ponovljivost pogojev. Pri varjenju smo spreminjali samo hitrost varjenja in vplivali na hitrost ohlajanja z prisilnim hlajenjem z vodo. Sproti smo merili temperaturo z termočleni na več mestih hkrati in nato z ustreznimi računalniškimi programi obravnavali podatke, da smo lahko izračunali hitrost ohlajanja. Sledile so meritve deleža ferita in kemijske sestave kar je bilo naše glavno orodje za določanje ustreznosti postopka. Prevaritev in zdravje zvarov smo nato preverili z makroobrusi. Dodatno smo izvedli še meritev trdote po Martensu in v nadaljevanju preizkusili zvare na upogib. Rezultati so pokazali, da je po MAG postopku mogoče kvalitetno zavariti. V primeru hlajenja z vodo takoj po zaključku smo se celo približali idealnem enakovrednem deležu obeh mikrostruktur.
Type of material - undergraduate thesis
; adult, serious
Publication and manufacture - Ljubljana : [U. Jančič], 2012
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