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Izdelava in karakterizacija modificirane sive litine z lamelnim grafitom : diplomsko delo Visokošolskega strokovnega študijskega programa I. stopnje Strojništvo - Projektno aplikativni programKenik, RokV okviru zaključnega dela »Izdelava in karakterizacija modificirane sive litine z lamelnim grafitom« je bilo sistematično izvedeno virtualno preizkušanje ter načrtovanje preiskovane litine s tehniko ... gravitacijskega litja v enkratne forme, izdelane iz bentonitne peščene mešanice. Uspešno je bila postavljena livarska tehnologija in izveden obravnavani preizkusni ulitek. Izračun livarskih procesov je obsegal: strujanje litine, ohlajevanje, strjevanje ter izračun napak zaradi krčenja, erozijo forme, ohlajevalne hitrosti in temperaturna polja v ulitku in v formi ter izračun ferita in perlita v matrici FGI ter mehanskih lastnosti. Uspešno je bilo izvedeno načrtovanje in izdelava modelne naprave, formanje, sinteza dveh litin, dolegiranje in cepljenje ter litje preizkusnega ulitka ob hkratni uporabi enostavne termične analize. Karakterizacija pridobljenih vzorcev je obsegala natančno določanje kemijske sestave ter metalografsko analizo področij, ki se strjujejo z velikimi, srednjimi in majhnimi ohlajevalnimi hitrostmi. Ugotovili smo, da se pri velikih ohlajevalnih hitrostih preiskovani litini 1 in 2 strjujeta belo. Pri srednjih ohlajevalnih hitrostih pa že melirano do sivo. Nadalje je bilo ugotovljeno, da poleg kemijske sestave litine močno vpliva na izoblikovanje grafita tudi nukleacijski potencial, ki je v zvezi z učinkovitostjo cepljenja. Dobljeni grafitni delci, glede na finost, obliko, velikost in porazdelitev, v povezavi z elementi, ki stabilizirajo perlit, pomembno vplivajo na potek evtektoidne premene.Type of material - undergraduate thesis ; adult, seriousPublication and manufacture - Ljubljana : [R. Kenik], 2025Language - slovenianCOBISS.SI-ID - 241136899
Author
Kenik, Rok
Other authors
Šturm, Roman, 1965- |
Mrvar, Primož
Topics
diplomske naloge |
gravitacijsko litje |
siva litina z lamelnim grafitom |
karakterizacija |
lastnosti |
thesis |
gravity casting |
lamellar graphite cast iron |
caracterization |
properties
| Library/institution |
City | Acronym | For loan | Other holdings |
|---|---|---|---|---|
| Faculty of Mechanical Engineering, Ljubljana | Ljubljana | FSLJ |
reading room 1 cop.
|
Shelf entry
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| Year | Impact factor | Edition | Category | Classification | ||||
|---|---|---|---|---|---|---|---|---|
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DRS, in which the journal is indexed
| Database name | Field | Year |
|---|
| Links to authors' personal bibliographies | Links to information on researchers in the SICRIS system |
|---|---|
| Kenik, Rok | ![]() |
| Šturm, Roman, 1965- | 13026 |
| Mrvar, Primož | 18565 |
Source: Personal bibliographies
and: SICRIS
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