Vpliv tehnoloških parametrov na stabilnost oblikovnega navarjanja

Zorič, Valentin (author), Klobčar, Damjan (mentor)

Z navarjanjem po postopku MIG/MAG lahko izdelujemo izdelke kompleksnih oblik. Da bi imeli ti izdelki čim boljše lastnosti imajo ključno vlogo nastavitve varilnih parametrov na viru varilnega toka. V diplomskem delu je prikazan potek navarjanja sten pri različno nastavljenih finih nastavitvah varjenja. Med navarjanjem z različnimi nastavitvami, smo navare hladili s komprimiranim zrakom ter merili temperaturo. Ugotavljali smo vpliv finih nastavitev na stroju na vžig obloka glede na obliko konice žice, ki smo jo oblikovali ob koncu varjenja. Pri testu z različno nastavljenimi parametri smo vizualno določili najprimernejšo steno ter nastavitve, s katerimi je bila izdelana; te nastavitve smo uporabili tudi pri testu vpliva različnih načinov hlajenja na videz navara. Analiza različnih načinov hlajenja nam je podala rezultate glede produktivnosti in videza navara. Ugotovili smo, da dobimo najbolje navarjeno steno, kadar spreminjamo parametre, ki vplivajo na začetno vzpostavitev obloka, ter kadar je prisotno prisilno hlajenje predhodno narejenega navara do predvidene temperature.

• Language: Slovenian
• Keywords: oblikovno obločno navarjanje, MIG/MAG varjenje, fine nastavitve, temperatura, prisilno hlajenje, CNC
• Work type: Bachelor thesis/paper
• Typology: 2.11 - Undergraduate Thesis
• Organization: FS - Faculty of Mechanical Engineering
• Place of publishing: Ljubljana
• Publisher: [V. Zorič]
• Year: 2019
• Number of pages: XXII, 70 str.
• PID: 20.500.12556/RUL-107445
• UDC: 621.791.75:62-11(043.2)
• COBISS.SI-ID: 16578331
• Publication date in RUL: 14.04.2019

ZORIČ, Valentin, 2019, Vpliv tehnoloških parametrov na stabilnost oblikovnega navarjanja [online]. Bachelor’s thesis. Ljubljana : V. Zorič. [Accessed 29 March 2025]. Retrieved from: https://repozitorij.uni-lj.si/IzpisGradiva.php?lang=eng&id=107445

Secondary language

• Language: English
• Title: The influence of technological parameters on the stability of wire arc additive manufacturing

Abstract

MIG/MAG welding allows us to produce complex-shaped components, while it is important to set welding parameters correctly on a welding power source in order to manufacture products with the best characteristics and shapes. This thesis describes the process of manufacturing walls with different fine settings for weld. In the first part of the experiment, weld beads were cooled with compressed air and the weld bead temperature was measured. We studied the effect of machine fine settings on arc ignition based on the weld bead shape made with filler wire. A test with different parameter settings was used to visually define the wall with the best weld characteristics. The settings applied for this wall were used to test the effect of different cooling techniques on weld bead appearance. An analysis of different cooling techniques provided results regarding productivity and weld bead appearance. We established that the best wall can be produced by varying the parameters that affect the initial arc ignition, and through the forced cooling of weld beads to a desired temperature.

• Keywords: wire arc additive manufacturing, MIG/MAG welding, fine settings, temperature, forced cooling, CNC