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Lasersko varjenje sive litine : diplomsko delo Visokošolskega strokovnega študijskega programa I. stopnje Strojništvo - Projektno aplikativni programPurkeljc, KristjanLiti izdelki so zaradi relativno ugodnih mehanskih lastnosti in nižje cene izdelave v visokoserijski proizvodnji zelo razširjeni v različnih industrijah in konstrukcijah. V različnih fazah izdelka ... jih je treba tudi variti ali popravljati z reparaturnim varjenjem. Lasersko varjenje sive litine predstavlja velik izziv zaradi njihove slabe varivosti. Kemična sestava sive litine povzroča namreč večje težave z varivostjo, ki se odražajo v pojavu razpok in penjenju taline. Uspešno lasersko varjenje je mogoče z ustrezno temperaturo predgrevanja varjencev, izbranimi tehnološkimi parametri in z ustrezno izbiro dodajnega materiala. V diplomskem delu smo raziskovali in predstavili značilne osnovne lastnosti materialov ter vpliv dodajnih materialov pri varjenju različnih vrst sivih litin. Predstavili smo varjenje obravnavanih zlitin, s poudarkom na laserskem varjenju. Izvedli smo lasersko varjenje nodularne in lamelarne sive litine ob uporabi različnih dodajnih materialov. Zvarne spoje smo ovrednotili z vizualno kontrolo, metalografsko analizo in meritvijo trdote. Na podlagi izvedenih meritev smo ovrednotili grafe trdote zvarov v odvisnosti od globine zvara. Na podlagi vizualne analize, mikroskopije ter meritve trdote bi za varjenje nodularne litine izbrali dodajni material NiTi4. Na vzorcu smo opazili manjšo lokalno poroznost drugače pa je bil var brez večjih nepravilnosti. Povprečna trdota vara je bila 389,7 ± 86,3 HV0,3. Za varjenje lamelarne litine bi izbrali med dodajnima materialoma AMPCO ter NiTi4 katera sta oba pokazala dobre rezultate. Povprečna trdota vara za AMPCO je znašala 391,5 ± 165,7 HV0,3 za NiTi4 pa 356.5 ± 59.5 HV0,3.Type of material - undergraduate thesis ; adult, seriousPublication and manufacture - Ljubljana : [K. Purkeljc], 2024Language - slovenianCOBISS.SI-ID - 188430083
Author
Purkeljc, Kristjan
Other authors
Klobčar, Damjan |
Trdan, Uroš
Topics
diplomske naloge |
laserji |
lasersko varjenje |
nodularna siva litina |
lamelarna siva litina |
trdota |
mikrostruktura |
lasers |
laser welding |
ductile grey cast iron |
lamellar grey cast iron |
hardness |
microstructure
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Library/institution |
City | Acronym | For loan | Other holdings |
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Faculty of Mechanical Engineering, Ljubljana | Ljubljana | FSLJ |
reading room 1 cop.
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Year | Impact factor | Edition | Category | Classification | ||||
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JCR | SNIP | JCR | SNIP | JCR | SNIP | JCR | SNIP |
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DRS, in which the journal is indexed
Database name | Field | Year |
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Links to authors' personal bibliographies | Links to information on researchers in the SICRIS system |
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Purkeljc, Kristjan | ![]() |
Klobčar, Damjan | 20441 |
Trdan, Uroš | 28906 |
Source: Personal bibliographies
and: SICRIS
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