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master's thesis
Utjecaj zaštitnog plina na mehanička svojstva metala zavara dobivenog primjenom žice SG 120
Zagreb: University of Zagreb, Faculty of Mechanical Engineering and Naval Architecture, 2018. urn:nbn:hr:235:265806
Hrgar, Robert
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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Hrgar, R. (2018). Utjecaj zaštitnog plina na mehanička svojstva metala zavara dobivenog primjenom žice SG 120 (Master's thesis). Zagreb: University of Zagreb, Faculty of Mechanical Engineering and Naval Architecture. Retrieved from https://urn.nsk.hr/urn:nbn:hr:235:265806

Hrgar, Robert. "Utjecaj zaštitnog plina na mehanička svojstva metala zavara dobivenog primjenom žice SG 120." Master's thesis, University of Zagreb, Faculty of Mechanical Engineering and Naval Architecture, 2018. https://urn.nsk.hr/urn:nbn:hr:235:265806

Hrgar, Robert. "Utjecaj zaštitnog plina na mehanička svojstva metala zavara dobivenog primjenom žice SG 120." Master's thesis, University of Zagreb, Faculty of Mechanical Engineering and Naval Architecture, 2018. https://urn.nsk.hr/urn:nbn:hr:235:265806

Hrgar, R. (2018). 'Utjecaj zaštitnog plina na mehanička svojstva metala zavara dobivenog primjenom žice SG 120', Master's thesis, University of Zagreb, Faculty of Mechanical Engineering and Naval Architecture, accessed 17 June 2024, https://urn.nsk.hr/urn:nbn:hr:235:265806

Hrgar R. Utjecaj zaštitnog plina na mehanička svojstva metala zavara dobivenog primjenom žice SG 120 [Master's thesis]. Zagreb: University of Zagreb, Faculty of Mechanical Engineering and Naval Architecture; 2018 [cited 2024 June 17] Available at: https://urn.nsk.hr/urn:nbn:hr:235:265806

R. Hrgar, "Utjecaj zaštitnog plina na mehanička svojstva metala zavara dobivenog primjenom žice SG 120", Master's thesis, University of Zagreb, Faculty of Mechanical Engineering and Naval Architecture, Zagreb, 2018. Available at: https://urn.nsk.hr/urn:nbn:hr:235:265806

Metadata
TitleUtjecaj zaštitnog plina na mehanička svojstva metala zavara dobivenog primjenom žice SG 120
Title (english)Influence of shielding gas on mechanical properties of SG 120 wire weld metal
AuthorRobert Hrgar
MentorIvica Garašić (mentor)
GranterUniversity of Zagreb
Faculty of Mechanical Engineering and Naval Architecture
Zagreb
Defense date and country2018-07-12, Croatia
Scientific / art field,
discipline and subdiscipline		TECHNICAL SCIENCES
Mechanical Engineering
Production Mechanical Engineering
Abstract
U prvom dijelu diplomskog rada obrađeni su razvoj, karakteristike i podjele čelika visoke čvrstoće s posebnim naglaskom na problematiku zavarljivosti takvih čelika. Opisane su osnovne značajke zavarljivosti takvih čelika i proučen utjecaj zaštitnog plina, unosa topline i sastava dodatnog materijala na mehanička svojstva zavarenog spoja. Također, istražena je i obrađena klasifikacija dodatnih materijala pri zavarivanju čelika visoke čvrstoće sukladno normi HRN EN ISO 16834:2012. U eksperimentalnom dijelu opisan je MAG postupak zavarivanja čelika API 5L X80 elektrodnom žicom LNM MoNi, kao i postupci ispitivanja, te analiza dobivenih rezultata. Planom pokusa definirane su dvije ulazne varijable, unos topline i vrsta zaštitnog plina, sa varijacijom na dvije razine. Provedeno je ispitivanje mehaničkih svojstava metala zavara statičkim vlačnim pokusom i ispitivanjem udarnog rada loma na Charpyjevom batu, kao i analiza makro uzorka. Eksperimentalni dio diplomskog rada proveden je u laboratorijima Fakulteta strojarstva i brodogradnje sveučilišta u Zagrebu.
Abstract (english)
The first part of the thesis deals with the development, characteristics and division of high strength steel with special emphasis on the problem of welding of such steel. The basic features of welding of such steel and the influence of protective gas, heat intake and the composition of the additional material on the mechanical properties of the welded joint are described. Also, the classification of additional materials for the welding of high strength steel in accordance with HRN EN ISO 16834: 2012 has been investigated and processed. The experimental section describes the MAG welding process of API 5L X80 LNM MoNi electrode wire as well as the test procedures and analysis of the obtained results. The experiment plan defined two input variables, heat inputs and types of protective gas, with two-level variation. An examination of the mechanical properties of weld metal by static tensile testing and examination of the impact toughness at Charpy's pendulum was carried out as well as a macro sample analysis. The experimental part of the thesis was conducted in the laboratories of the Faculty of Mechanical Engineering and Naval Architecture, University of Zagreb.
Keywords
Keywords (english)
Languagecroatian
URN:NBNurn:nbn:hr:235:265806
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 on2019-05-22 22:38:55