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master's thesis
Robotizirano MAG zavarivanje dupleks čelika
Zagreb: University of Zagreb, Faculty of Mechanical Engineering and Naval Architecture, 2017. urn:nbn:hr:235:774579
Ptičar, Martin
University of Zagreb
Faculty of Mechanical Engineering and Naval Architecture

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

Cite this document

Ptičar, M. (2017). Robotizirano MAG zavarivanje dupleks čelika (Master's thesis). Zagreb: University of Zagreb, Faculty of Mechanical Engineering and Naval Architecture. Retrieved from https://urn.nsk.hr/urn:nbn:hr:235:774579

Ptičar, Martin. "Robotizirano MAG zavarivanje dupleks čelika." Master's thesis, University of Zagreb, Faculty of Mechanical Engineering and Naval Architecture, 2017. https://urn.nsk.hr/urn:nbn:hr:235:774579

Ptičar, Martin. "Robotizirano MAG zavarivanje dupleks čelika." Master's thesis, University of Zagreb, Faculty of Mechanical Engineering and Naval Architecture, 2017. https://urn.nsk.hr/urn:nbn:hr:235:774579

Ptičar, M. (2017). 'Robotizirano MAG zavarivanje dupleks čelika', Master's thesis, University of Zagreb, Faculty of Mechanical Engineering and Naval Architecture, accessed 27 December 2024, https://urn.nsk.hr/urn:nbn:hr:235:774579

Ptičar M. Robotizirano MAG zavarivanje dupleks čelika [Master's thesis]. Zagreb: University of Zagreb, Faculty of Mechanical Engineering and Naval Architecture; 2017 [cited 2024 December 27] Available at: https://urn.nsk.hr/urn:nbn:hr:235:774579

M. Ptičar, "Robotizirano MAG zavarivanje dupleks čelika", Master's thesis, University of Zagreb, Faculty of Mechanical Engineering and Naval Architecture, Zagreb, 2017. Available at: https://urn.nsk.hr/urn:nbn:hr:235:774579

Metadata
TitleRobotizirano MAG zavarivanje dupleks čelika
Title (english)Robotized MAG welding of duplex steel
AuthorMartin Ptičar
MentorIvica Garašić (mentor)
GranterUniversity of Zagreb
Faculty of Mechanical Engineering and Naval Architecture
Zagreb
Defense date and country2017-12-07, Croatia
Scientific / art field,
discipline and subdiscipline		TECHNICAL SCIENCES
Mechanical Engineering
Abstract
U teorijskom dijelu obrađeno je polje visokolegiranih čelika općenito, a posebno su objašnjeni austenitno-feritni (dupleks) čelici. Ukratko je opisan povijesni razvoj dupleks čelika, objašnjena je mikrostruktura i uloga pojedinih faza i legirnih elemenata, te su opisana svojstva otpornosti na koroziju i trošenje, fizička i na kraju mehanička svojstva. Najveća pažnja usmjerena je na zavarljivost i tehnologiju zavarivanja dupleks čelika. U daljenjem radu opisan je MAG postupak zavarivanja i karakteristični načini prijenosa metala kod istog postupka. Opisani su uvjeti za izbor dodatnih materijala i njihova primjena. U posljednjem poglavlju teorijskog dijela opisano je robotizirano zavarivanje. Pojašnjene su dvije vrste programiranja robota - off line i on line, te su prikazane prednosti i nedostaci primjene robota u proizvodnji. U eksperimentalnom dijelu opisana je korištena oprema za zavarivanje: izvor struje za zavarivanje i robotska stanica. Nadalje, opisan je osnovni i dodatni materijal za zavarivanje te korišteni zaštitni plinovi. Osmišljen je plan pokusa kojim se mogu usporediti unosi topline kod jednoprolaznog i višeprolaznog zavarivanja te utjecaj različitih plinskih mješavina na geometriju zavarenog spoja. Na kraju, analizirani su rezultati dobiveni vizualnom metodom kontrole kutnog zavarenog spoja, uzorci makroizbrusaka, ispitivanja tvrdoće te slika mikrostrukture.
Abstract (english)
The aim of this master's thesis is: "Robotized MAG welding of Duplex Steel". It consists of two parts: theoretical and experimental. Theoretical part contains description of high-alloyed steels in general with detailed elaboration of duplex steel. In the first part, historical development of duplex steel is mentioned, microstructure of duplex is described and corrosion resistance with mechanical properties are explained. Emphasis of the theoretical part is on welding and weldability of duplex steels. Further, MAG welding is analyzed with metal transfer modes through the electric arc. Filler material is explained with it's application in industry. In the last chapter, robotized welding is mentioned and two most common kind of programming are presented. Also, advantages and disadvantages of robotized manufacturing are described. In the experimental part used equipment, robotic station, base and filler material and shielding gases are described. The experiment was conceived to compare heat inputs in single and multi-pass welding in a combination of two different shielding gas mixtures. In the end, results of visual control method of a welded part, microstructural changes and hardness test are analyzed.
Keywords
Keywords (english)
Languagecroatian
URN:NBNurn:nbn:hr:235:774579
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 20:51:19