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undergraduate thesis
Utjecaj postupaka nitriranja na otpornost trošenju cijevi streljačkog oružja
Zagreb: University of Zagreb, Faculty of Mechanical Engineering and Naval Architecture, 2017. urn:nbn:hr:235:144635
Mateša, Ivan
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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Mateša, I. (2017). Utjecaj postupaka nitriranja na otpornost trošenju cijevi streljačkog oružja (Undergraduate thesis). Zagreb: University of Zagreb, Faculty of Mechanical Engineering and Naval Architecture. Retrieved from https://urn.nsk.hr/urn:nbn:hr:235:144635

Mateša, Ivan. "Utjecaj postupaka nitriranja na otpornost trošenju cijevi streljačkog oružja." Undergraduate thesis, University of Zagreb, Faculty of Mechanical Engineering and Naval Architecture, 2017. https://urn.nsk.hr/urn:nbn:hr:235:144635

Mateša, Ivan. "Utjecaj postupaka nitriranja na otpornost trošenju cijevi streljačkog oružja." Undergraduate thesis, University of Zagreb, Faculty of Mechanical Engineering and Naval Architecture, 2017. https://urn.nsk.hr/urn:nbn:hr:235:144635

Mateša, I. (2017). 'Utjecaj postupaka nitriranja na otpornost trošenju cijevi streljačkog oružja', Undergraduate thesis, University of Zagreb, Faculty of Mechanical Engineering and Naval Architecture, accessed 30 November 2024, https://urn.nsk.hr/urn:nbn:hr:235:144635

Mateša I. Utjecaj postupaka nitriranja na otpornost trošenju cijevi streljačkog oružja [Undergraduate thesis]. Zagreb: University of Zagreb, Faculty of Mechanical Engineering and Naval Architecture; 2017 [cited 2024 November 30] Available at: https://urn.nsk.hr/urn:nbn:hr:235:144635

I. Mateša, "Utjecaj postupaka nitriranja na otpornost trošenju cijevi streljačkog oružja", Undergraduate thesis, University of Zagreb, Faculty of Mechanical Engineering and Naval Architecture, Zagreb, 2017. Available at: https://urn.nsk.hr/urn:nbn:hr:235:144635

Metadata
TitleUtjecaj postupaka nitriranja na otpornost trošenju cijevi streljačkog oružja
Title (english)Influence of nitriding processes on wear resistance of gunbarrels
AuthorIvan Mateša
MentorMirko Jakopčić (mentor)
GranterUniversity of Zagreb
Faculty of Mechanical Engineering and Naval Architecture
Zagreb
Defense date and country2017-03-03, Croatia
Scientific / art field,
discipline and subdiscipline		TECHNICAL SCIENCES
Mechanical Engineering
Abstract
U cijevi vatrenog oružja se tijekom opaljenja razvijaju intezivni, međusobno interaktivni mehanički, toplinski i kemijski tribološki procesi. Materijal cijevi izložen je djelovanju višestrukih mehanizama trošenja materijala, poglavito njezin unutrašnji dio ili kanal cijevi, koji je u izravnom dodiru s projektilom. U radu su proučeni mehanizmi trošenja na različitim metalnim prevlakama. Istraživanje prikazano u ovome radu provedeno je na čeliku za poboljšavanje 32CrMoV12-10, namijenjenom za izradu cijevi naoružanja. Čelik je nabavljen od dva različita proizvođača, a u radu se nastoji ispitati podudarnost njihove tribološke otpornosti u nemodificiranom i modificiranom stanju. Uzorci su razvrstani u dvije grupe: čelik 1 i čelik 2. Obje grupe uzoraka čelika modificirane su postupkom nitriranja u solnoj kupci po jedan uzorak za svaku grupu. Kod ispitivanja otpornosti na trošenje abrazijom, ukupno je ispitano četri uzorka. Za svaku grupu čelika, po jedan uzorak u poboljšanom stanju i po jedan uzorak nitriran u solnoj kupci. Na uzorcima su 2 traga trošenja, s tri ponovljenja mjerenja. Mjeren je gubitak mase uzorka, kao kvantitativni pokazatelj za usporedbu otpornosti ispitnih uzoraka. Pri ispitivanju otpornosti na adhezijsko trošenje, ispitan je po jedan uzorak svake grupe u tri ciklusa (na čeličnom prstenu). Pokazatelj otpornosti je faktor trenja µ, postignut na dodirnoj površini između uzorka i ispitnog prstena
Abstract (english)
Inside a gunbarrel there are complex mechanical, thermal and chemical proccesses during firing. Material of the gunbarrel is exposed to multiple wear mechanisms, especially the inner part of the bore, which is in direct contact with the projectile. Several wear mechanisms, on different types of coatings, are studied in the paper. Research has been done on 32CrMoV12-10 steel which is used as a material for barrel production. Test samples are acquired from the two different manufacturers and are divided in two seperate groups. Samples sre quenched, tempered and stress relief annealed. During the examination of abrasion, four samples wre tested, one of the each group was stress relief anneded and the other was nitrated. Examinations were repeated three times.Mass loss was measured as a quantitive analysis for comparing indices of abrasion. While testing adhesion resistance, one sample of each steel groups was examined in the cycles (on steel test ring). Adhesion resistance index is coefficient of friction µ achieved on the contact surface between test sample and test ring.
Keywords
Keywords (english)
Languagecroatian
URN:NBNurn:nbn:hr:235:144635
Study programmeTitle: Mechanical Engineering
Study programme type: university
Study level: undergraduate
Academic / professional title: sveučilišni/a prvostupnik/ prvostupnica (baccalaureus/baccalaurea) inženjer/inženjerka strojarstva (sveučilišni/a prvostupnik/ prvostupnica (baccalaureus/baccalaurea) inženjer/inženjerka strojarstva)
Type of resourceText
File originBorn digital
Access conditionsOpen access
Terms of useLicence In copyright icon
Created on2019-05-22 18:53:48