Faculty of Mechanical Engineering, Lj. (FSLJ)
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Lasersko površinsko pretaljevanje nodularne litine : diplomsko delo Visokošolskega strokovnega študijskega programa I. stopnje StrojništvoŠtefančič, Rok, strojnikSestavni del litega železa predstavljajo grafitni izločki, ki jih lahko opazimo pri pregledu mikrostrukture. V okolici grafitnih izločkov oz. nodul se pojavi drugačna trdota, kot v ostalih delih ... materiala, kar vpliva na neenakomerno trdoto površinskega sloja pri klasičnih postopkih kaljenja. Problem lahko minimiziramo z uporabo tehnike laserskega pretaljevanja, ki večino nodul pretali in s tem izboljša homogenost materiala, izboljša pa se tudi trdota površine, ki je pomemben dejavnik pri obrabni odpornosti materiala. V začetni fazi smo opazovali ter merili laserske sledi, ki smo jih formirali v pulznem načinu pri različnih parametrih in s pregledom mikrostrukture določili smiselne parametre za ustrezno stopnjo pretaljevanja. Merili smo globino pretalitve, širino pege, ter trdoto v posamezni coni materiala. Primerjali smo tudi kako uporaba absorptivnega sredstva - grafita, vpliva na globino pretalitve. Po izbiri parametrov smo nodularno litino pretalili s pulzi pri frekvenci 3 Hz, nato pa smo izmerili še trdote v pretaljeni, kaljeni (prehodni), ter osnovni coni materiala.Type of material - undergraduate thesis ; adult, seriousPublication and manufacture - Ljubljana : [R. Štefančič], 2019Language - slovenianCOBISS.SI-ID - 16968219
Author
Štefančič, Rok, strojnik
Other authors
Šturm, Roman, 1965-
Topics
diplomske naloge |
lasersko pretaljevanje |
lito železo |
nodularne litine |
trdota |
mikrostruktura |
thesis |
laser remelting |
cast iron |
nodular cast iron |
hardness |
microstructure
Call number – location, accession no. ... |
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VS 0000000719 IN: 60000719 VS 719 IN: 60000719 |
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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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Štefančič, Rok, strojnik | |
Šturm, Roman, 1965- | 13026 |
Source: Personal bibliographies
and: SICRIS
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