zaključna naloga Univerzitetnega študijskega programa I. stopnje Strojništvo - Razvojno raziskovalni program
Drejc Fležar (Author), Damjan Klobčar (Mentor), Uroš Trdan (Co-mentor)

Abstract

Orbitalno varjenje TIG nerjavnih jekel danes predstavlja način visokokakovostnega spajanja cevovodov v farmacevtski in prehrambeni industriji. Za sam postopek so potrebni tudi zaščitni plini, ki preprečijo oksidacijo zvarnega spoja. V diplomskem delu smo prikazali vpliv O2 in vrste zaščitnega plina na kakovost zvarnih spojev pri orbitalnem varjenju TIG nerjavnih jekel. Na osnovi eksperimentov smo ugotovili, da pri izdelavi spenjalnih varkov koncentracija O2 že pri 400 ppm vidno vpliva na kakovost zvarnega spoja. Ugotovili smo tudi, da pri koncentraciji O2 nad 200 ppm na kakovost zvarnega spoja bistveno vpliva kakovost zaščitnega plina. Kot najbolj pomembno štejemo ugotovitev, da je plin N2 ekonomsko najbolj ugoden za izdelavo zvarnih spojev pri orbitalnem varjenju TIG nerjavnih jekel.

Keywords

diplomske naloge;varjenje TIG;orbitalno varjenje TIG;zaščitni plini;nerjavna jekla;kisik;argon;

Data

Language: Slovenian
Year of publishing:
Typology: 2.11 - Undergraduate Thesis
Organization: UL FS - Faculty of Mechanical Engineering
Publisher: [D. Fležnar]
UDC: 621(043.2)
COBISS: 122682627 Link will open in a new window
Views: 257
Downloads: 8
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Other data

Secondary language: English
Secondary title: Quality influence of shielding gases in orbital TIG welding of stainless steels
Secondary abstract: Orbital TIG welding of stainless steels today represents a method of high-quality joining of pipelines in the pharmaceutical and food industries. The process also requires shielding gases to prevent oxidation of the weld joint. In the thesis, we demonstrated the influence of O₂ and the type of shielding gas on the quality of weld joints in orbital TIG welding of stainless steels. Based on experiments, we found that in the production of butt welds, the O₂ concentration already at 400 ppm has a visible effect on the quality of the weld joint. We also found that when the O₂ concentration is above 200 ppm, the quality of the welding joint is significantly affected by the quality of the shielding gas. We consider most important the finding that N₂ gas is the most economically advantageous for the production of weld joints in orbital TIG welding of stainless steels.
Secondary keywords: thesis;TIG welding;orbital TIG welding;shielding gases;stainless steel;oxygen;hydrogen;
Type (COBISS): Final paper
Study programme: 0
Embargo end date (OpenAIRE): 2023-09-12
Thesis comment: Univ. v Ljubljani, Fak. za strojništvo
Pages: XI, 49 f.
ID: 16448463
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