Primjena visokoučinskog MAG postupka zavarivanja

undergraduate thesis

• Title (english): Application of high-efficiency MAG welding
• Author: Filip Frigan
• Mentor: Zoran Kožuh (mentor)
• Granter: University of Zagreb; Faculty of Mechanical Engineering and Naval Architecture; Zagreb
• Defense date and country: 2021-02-25, Croatia
• Scientific / art field, discipline and subdiscipline: TECHNICAL SCIENCES; Mechanical Engineering; Production Mechanical Engineering

Abstract

Ovim radom obrađen je konvencionalni MAG postupak zavarivanja kao i načini prijenosa metala koji se javljaju upotrebom ovoga postupka. Nabrojani su i opisani modificirani načini prijenosa metala koji rezultiraju visokom produktivnošću, a zasnivaju se na konvencionalnim načinima prijenosa. Detaljno je opisan način prijenosa metala kojeg karakterizira zakopani električni luk poznat kao „D – arc“ i njegova primjena za zavarivanje konstrukcija od nelegiranih čelika. U eksperimentalnom dijelu provedena su ispitivanja kvalitete zavara dobivenih visokoučinskim D – arc postupkom zavarivanja u odnosu na EPP postupak zavarivanja (elektrolučno zavarivanje pod zaštitnim praškom) s parametrima D – arc postupka. Ispitivanja su se sastojala od vizualne analize makroizbrusaka i mjerenja tvrdoće. Nakon provedenih ispitivanja dobiveni rezultati su uspoređeni sa zavarima izvedenim EPP postupkom zavarivanja.

Abstract (english)

This thesis deals with the conventional MAG welding process as well as metal transfer modes that occur using this process. The modified metal transfer modes resulting in high productivity are listed and described and they are based on conventional modes of metal transfer. The method of metal transfer characterized by a buried arc known as „D – arc“ and its application for welding non – alloy steel structures is described in detail. In the experimental part of the thesis, quality tests of welds obtained by high – efficiency D – arc welding process and SAW welding process (submerged – arc welding) with parameters of D – arc were performed. The tests consisted of visual analysis of macro – grindings and hardness measurements. After the performed tests, the results were compared with the welds performed by the SAW welding process.

• Keywords: MAG; prijenos metala; zakopani električni luk; D - arc
• Keywords (english): MAG; metal transfer; buried arc; D - arc
• Language: croatian
• URN:NBN: urn:nbn:hr:235:326745
• Study programme: Title: Mechanical Engineering; Study programme type: university; Study level: undergraduate; Academic / professional title: sveučilišni/a prvostupnik/ prvostupnica (baccalaureus/baccalaurea) inženjer/inženjerka strojarstva (sveučilišni/a prvostupnik/ prvostupnica (baccalaureus/baccalaurea) inženjer/inženjerka strojarstva)
• Type of resource: Text
• File origin: Born digital
• Access conditions: Open access
• Created on: 2021-02-22 17:56:13