20.500.12556/DKUM-61791 Karakterizacija učinkov spremembe načina cepljenja na mehanske in mikrostrukturne lastnosti sive litine s kroglastim grafitom Characterisation of the effects of changes of inoculation procedure of the mechanical properties and microstructure of cast iron with spheroidal graphite V diplomskem delu obravnavamo učinke prehoda z enostopenjskega na dvostopenjsko cepljenje na mikrostrukturne in mehanske lastnosti sive litine s kroglastim grafitom. Cilj spremembe je bil zmanjšati količino porabljenih cepiv in na ta način zagotoviti stroškovno učinkovitejšo proizvodnjo ob istočasni ohranitvi mikrostrukturnih in mehanskih lastnosti. Mikrostrukturne lastnosti smo ugotavljali z optično metalografsko analizo in avtomatično grafično analizo grafita. Mehanske lastnosti smo ugotavljali z nateznim preizkusom. Dobljeni rezultati so pokazali, da pri spremembi na dvostopenjsko cepljenje kljub manjši porabi cepiva mikrostrukturne in mehanske lastnosti ne odstopajo od obstoječih lastnosti, pridobljenih z enostopenjskim načinom cepljenja. Predpostavka, da lahko ob prehodu na dvostopenjsko cepljenje zmanjšamo porabljeno količino cepiva ob istočasni ohranitvi mikrostrukturnih in mehanskih lastnosti, je bila v diplomskem delu potrjena. The aim of our thesis was to examine the effects of changing an inoculation procedure from one step inoculation to two step inoculation on mechanical and microstructure properties of grey iron with spehriodal graphite. The change was aimed at reducing the quantity of consumed inoculants to achieve production cost efficiency and at same time to preserve mechanical and microstructure properties of produced grey iron. Microstructure properties were tested with optical metalographical analysis and with graphical analysis of graphite. Mechanical properties were tested with tensile test. Despite a lower consumption it was found that changing the one-step inoculation procedure to two-step inoculation did not deviate from the current results. siva litina kroglasti grafit cepljenje mikrostrukturne lastnosti mehanske lastnosti grey iron spherodial graphite inoculation microstructure properties mechanical properties true true false [A. Zalokar] Slovenski jezik Angleški jezik Diplomsko delo 2016-08-17 08:46:39 2016-10-19 11:38:28 2022-06-27 03:06:56 2019-07-11 12:33:14 2016 0 Maribor 0 0000-00-00 NiDoloceno NiDoloceno NiDoloceno 0000-00-00 0000-00-00 0000-00-00 621.17/.18_669.131.6(043.2) 20433686 URN:SI:UM:DK:CQJQAFPR VS_Zalokar_Aljosa_2016.pdf VS_Zalokar_Aljosa_2016.pdf 1 B8A717D77DC4FB289110379AC429096C 6278762f4e28f8f011d0d3f028dd57e84d1ef7ba16b72691705771d462c9d447 cc369705-7c0d-11eb-bb7a-00155d0001ca https://dk.um.si/Dokument.php?lang=slv&id=107677 Fakulteta za strojništvo 0 0 0