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Vpliv tehnoloških parametrov na stabilnost oblikovnega navarjanja
Zorič, Valentin (Author), Klobčar, Damjan (Mentor) More about this mentor... This link opens in a new window

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Abstract
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 (mb11)
Tipology:2.11 - Undergraduate Thesis
Organization:FS - Faculty of Mechanical Engineering
Year:2019
Publisher:[V. Zorič]
Number of pages:XXII, 70 str.
UDC:621.791.75:62-11(043.2)
COBISS.SI-ID:16578331 Link is opened in a new window
Views:472
Downloads:209
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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

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