Automatizirano TIG zavarivanje cijevi iz nehrđajućih čelika

master's thesis

• Title (english): Automated TIG welding of stainless steel pipes
• Author: Filip Bionda
• Mentor: Ivica Garašić (mentor)
• Granter: University of Zagreb; Faculty of Mechanical Engineering and Naval Architecture; Zagreb
• Defense date and country: 2018-12-06, Croatia
• Scientific / art field, discipline and subdiscipline: TECHNICAL SCIENCES; Mechanical Engineering; Production Mechanical Engineering

Abstract

U ovom je radu obrađena problematika TIG zavarivanja materijala iz nehrđajućih čelika. U teorijskom dijelu rada razrađena je podjela i primjena nehrđajućih čelika u zavarenim konstrukcijama, opisano ručno i automatizirano TIG zavarivanje, primjena i podjela zaštitnih plinova za TIG zavarivanje nehrđajućih čelika te ispitivanja otpornosti na koroziju kod zavarenih spojeva nehrđajućih čelika. U eksperimentalnom dijelu provedeno je automatizirano zavarivanje cijevi iz nehrđajućeg čelika (AISI 316L) uz primjenu dvaju različitih zaštitnih plinova (Inoxline H5 i Argon 4.8). Nakon vizualne kontrole izrađen je makroizbrusak na kojem se vidi presjek zavara u oba slučaja te je provedeno ispitivanje otpornosti na rupičastu koroziju. Cilj ovog eksperimentalnog rada bio je utvrditi razlike u geometriji zavara i otpornost na koroziju u dvama slučajevima u kojima je jedina razlika korišteni zaštitni plin. Nakon provedenog eksperimenta možemo zaključiti da je zavarivanje provedeno uz zaštitni plin Inoxline H5 te iste ostale parametre zavarivanja kao i u slučaju s Argon 4.8 kao zaštitnim plinom, ostvarilo bolju penetraciju i kvalitetu zavara te se pokazalo da zavareni spoj ima bolju i korozijsku postojanost.

Abstract (english)

This paper deals with the problem of TIG welding materials from stainless steels. The theoretical part of the paper deals with the division and application of stainless steels in welded constructions, and describes manual and automated TIG welding, the application and distribution of shielding gases for TIG welding of stainless steels, and corrosion resistance tests on welded joints of stainless steels. In the experimental part, an automated welding of stainless steel pipes (AISI 316L) was carried out using two different shielding gases (Inoxline H5 and Argon 4.8). After visual control, a macroscopic section was created that shows a cross-sectional image of the weld in both cases, and a pitting corrosion resistance test was performed. The aim of this experimental paper was to determine the differences in the weld geometry and corrosion resistance in the two cases in which different shielding gases were used. The results of the experiment indicate that the welding carried out with Inoxline H5 shielding gas, using the same welding parameters as in the case of Argon 4.8, achieved better penetration and quality of the weld, and proved that the welded joint has better corrosion resistance.

• Keywords: TIG zavarivanje; nehrđajući čelici; automatizirano zavarivanje; rupičasta korozija; zaštitni plinovi
• Keywords (english): TIG welding; stainless steels; automated welding; pitting corrosion; shielding gases
• Language: croatian
• URN:NBN: urn:nbn:hr:235:872233
• Study programme: Title: Mechanical Engineering; Study programme type: university; Study level: graduate; Academic / professional title: magistar/magistra inženjer/inženjerka strojarstva (magistar/magistra inženjer/inženjerka strojarstva)
• Type of resource: Text
• File origin: Born digital
• Access conditions: Open access
• Created on: 2019-05-22 23:31:45