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master's thesis
Ispitivanje sposobnosti ohlađivanja biljnih ulja za kaljenje
Zagreb: University of Zagreb, Faculty of Mechanical Engineering and Naval Architecture, 2021. urn:nbn:hr:235:754082
Jurišić, Darijo
University of Zagreb
Faculty of Mechanical Engineering and Naval Architecture

Institutional repository: Repository of Faculty of Mechanical Engineering and Naval Architecture University of Zagreb

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Jurišić, D. (2021). Ispitivanje sposobnosti ohlađivanja biljnih ulja za kaljenje (Master's thesis). Zagreb: University of Zagreb, Faculty of Mechanical Engineering and Naval Architecture. Retrieved from https://urn.nsk.hr/urn:nbn:hr:235:754082

Jurišić, Darijo. "Ispitivanje sposobnosti ohlađivanja biljnih ulja za kaljenje." Master's thesis, University of Zagreb, Faculty of Mechanical Engineering and Naval Architecture, 2021. https://urn.nsk.hr/urn:nbn:hr:235:754082

Jurišić, Darijo. "Ispitivanje sposobnosti ohlađivanja biljnih ulja za kaljenje." Master's thesis, University of Zagreb, Faculty of Mechanical Engineering and Naval Architecture, 2021. https://urn.nsk.hr/urn:nbn:hr:235:754082

Jurišić, D. (2021). 'Ispitivanje sposobnosti ohlađivanja biljnih ulja za kaljenje', Master's thesis, University of Zagreb, Faculty of Mechanical Engineering and Naval Architecture, accessed 29 November 2024, https://urn.nsk.hr/urn:nbn:hr:235:754082

Jurišić D. Ispitivanje sposobnosti ohlađivanja biljnih ulja za kaljenje [Master's thesis]. Zagreb: University of Zagreb, Faculty of Mechanical Engineering and Naval Architecture; 2021 [cited 2024 November 29] Available at: https://urn.nsk.hr/urn:nbn:hr:235:754082

D. Jurišić, "Ispitivanje sposobnosti ohlađivanja biljnih ulja za kaljenje", Master's thesis, University of Zagreb, Faculty of Mechanical Engineering and Naval Architecture, Zagreb, 2021. Available at: https://urn.nsk.hr/urn:nbn:hr:235:754082

Metadata
TitleIspitivanje sposobnosti ohlađivanja biljnih ulja za kaljenje
Title (english)Testing the cooling properties of vegetable oils as quenching media
AuthorDarijo Jurišić
MentorBožidar Matijević (mentor)
GranterUniversity of Zagreb
Faculty of Mechanical Engineering and Naval Architecture
Zagreb
Defense date and country2021-12-16, Croatia
Scientific / art field,
discipline and subdiscipline		TECHNICAL SCIENCES
Mechanical Engineering
Abstract
U ovom radu sažeto su opisani različiti postupci toplinske obrade, a detaljnije je opisan postupak kaljenja sa svim njegovim fazama. Fokus ovog rada stavljen je na posljednju fazu u procesu kaljenja - fazu gašenja (ohlađivanja). Navode se i detaljnije opisuju u praksi najkorištenija sredstva za gašenje kod provođenja postupka kaljenja. Ističe se ekološka potreba za što većom primjenom biljnih ulja među sredstvima korištenim za gašenje metala prilikom kaljenja. U eksperimentalnom dijelu rada uspoređena su biljna ulja od: kokosa, masline, palme, repice, šafranike i suncokreta. U procesu ohlađivanja s namjenom praćenja svojstava medija za gašenje korišten je mjerno-analitički sustav IVF Smart Quench pomoću kojeg su ranije navedena ulja ispitana te su zabilježene karakteristične veličine ohlađivanja, odnosno brzine ohlađivanja pri 300 °C i 500 °C, maksimalna brzina ohlađivanja i vrijeme i temperatura pri kojom je ista postignuta te vremena ohlađivanja do 200 °C, 400 °C i 600 °C. Sva ulja su ispitana na početnim temperaturama od 21 °C, 50 °C i 80 °C te je napravljena tablična i dijagramska usporedba ispitanih ulja. Na kraju rada dan je zaključak argumentiran dobivenim rezultatima.
Abstract (english)
In this work, various heat treatment processes are briefly described, and the hardening process with all its phases is described in more detail. The focus of this work is put on the last phase of hardening - the quenching phase (the cooling phase). Most used media for quenching in practice are stated and described in detail. The ecological need for greater integration of vegetable oils for cooling metals during quenching stands out. Vegetable oils from coconut, olive, palm, rapeseed, saffron and sunflower were compared in the experimental part of the work. With the purpose of monitoring the properties of quenching media a measurement analytical system IVF Smart Quench was used, with which the previously mentioned oils were tested, and their cooling characteristics were recorded, that are their cooling speed at 300 °C and 500 °C, the maximum cooling speed and time and temperature at which it is reached and cooling time to 200 °C, 400 °C and 600 °C. All oils were tested with the initial temperatures of 21 °C, 50 °C and 80 °C and a tabular and diagram comparison of all the examined oils was made. At the end of the work, the conclusion is given supported by the obtained results.
Keywords
Keywords (english)
Languagecroatian
URN:NBNurn:nbn:hr:235:754082
Study programmeTitle: Mechanical Engineering
Study programme type: university
Study level: graduate
Academic / professional title: magistar/magistra inženjer/inženjerka strojarstva (magistar/magistra inženjer/inženjerka strojarstva)
Type of resourceText
File originBorn digital
Access conditionsOpen access
Terms of useLicence In copyright icon
Created on2021-12-11 12:16:18