Faculty of Mechanical Engineering, Lj. (FSLJ)
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Lasersko pretaljevanje površine ogljikovih jekel C15 in C45 : zaključna naloga Univerzitetnega študijskega programa I. stopnje Strojništvo - Razvojno raziskovalni programFabjan, Miha, strojnikV zaključnem delu »Lasersko pretaljevanje površin ogljikovih jekel C15 in C45« je predstavljena metodologija eksperimenta in ovrednotenje dobljenih rezultatov mikrostruktur in mikrotrdote kot ... posledica laserskega pretaljevanja Nd:YAG laserja dveh ogljikovih jekel z oz. brez zaščitnega plina Ar. S pomočjo meritev globin in širin pretaljenega in toplotno vplivanega območja ter meritev mikrotrdot v pretaljenem, toplotno vplivanem območju in osnovnem materialu smo določili optimalne procesne parametre, katerih cilje je bil, da s procesom laserskega pretaljevanja čim bolj utrdimo material, hkrati pa imamo čim večjo učinkovitost. Na podlagi analize rezultatov mikrostruktur in mikrotrdot se je izkazalo, da smo pri danih konstantnih in spreminjajočih veličinah optimalen parameter obdelave pri C15 dobili pri uporabi energije žarka E = 13,7 J, pri C45 pa pri E = 11,9 J. Poleg omenjenih energij žarka smo imeli še konstantni parametre t = 8ms, f = 4 Hz, v = 1.5 mm/s in ?v_Ar = 2 l/min. Po ovrednotenju meritev smo lahko opazili, da je C45 veliko bolj primeren material za lasersko utrjevanje površin, saj se v primerjavi z C15 začne pretaljevati že pri manjših močeh, prav tako je to pretaljevanje in vnos toplote v material skozi celoten potek bilo intenzivnejše v globino materiala.Type of material - undergraduate thesis ; adult, seriousPublication and manufacture - Ljubljana : [M. Fabjan], 2022Language - slovenianCOBISS.SI-ID - 115357955
Author
Fabjan, Miha, strojnik
Other authors
Šturm, Roman, 1965-
Topics
diplomske naloge |
ogljikovo jeklo C15 |
ogljikovo jeklo C45 |
lasersko pretaljevanje površine |
mikrostrukture |
mikrotrdota |
thesis |
carbon steel C15 |
carbon steel C45 |
laser surface remelting |
microstructure |
microhardness
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UN 0000001638 IN: 80001638 UN 1638 IN: 80001638 |
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Fabjan, Miha, strojnik | ![]() |
Šturm, Roman, 1965- | 13026 |
Source: Personal bibliographies
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