Vpliv varilnih parametrov in zaščitnih plinov na brizganje pri varjenju MAG nerjavnega in konstrukcijskega jekla

Kernel, Tilen (author), Klobčar, Damjan (mentor), Trdan, Uroš (co-mentor)

V zaključni nalogi je obravnavana problematika brizganja taline pri varjenju nosilnega dela nakladalnega prostora tovornjaka po postopku MAG. Gre za varjenje prečnih profilov iz konstrukcijske jeklene pločevine na robni profil iz krivljene nerjavne pločevine. Varili smo zvare v PA in PB legi, pri tem pa uporabili različne varilne parametre in zaščitne pline. S pomočjo vizualne metode smo dobili količino nastalih obrizgov pri posameznem zvaru. Rezultate smo analizirali, jih med seboj primerjali in tako razbrali vpliv posameznega varilnega parametra in zaščitnega plina na število obrizgov. Beležili smo tudi čas odstranjevanja obrizgov in ga primerjali s časom varjenja. Ugotovili smo, da ima največji vpliv na zmanjšanje števila obrizgov izbira pravega zaščitnega plina. Manjši vpliv na to, pa so imele različne nastavitve varilnega vira, čistoča plinske šobe ter izrabljenost kontaktne šobe.

• Language: Slovenian
• Keywords: nakladalni prostor, varilni parametri, zaščitni plin, varjenje MAG, kontaktna šoba, obrizgi
• Work type: Final paper
• Typology: 2.11 - Undergraduate Thesis
• Organization: FS - Faculty of Mechanical Engineering
• Place of publishing: Ljubljana
• Publisher: [T. Kernel]
• Year: 2022
• Number of pages: XVI, 38 f.
• PID: 20.500.12556/RUL-141753
• UDC: 621.791.75(043.2)
• COBISS.SI-ID: 133839363
• Publication date in RUL: 07.10.2022

Secondary language

• Language: English
• Title: Influence of welding parameters and protective gases on the spatter formation during MAG welding of stainless and structural steel

Abstract

The thesis deals with the problem of spatter formation during MAG welding of the support section of a truck loading space. The welding takes place between structural steel transverse profiles and stainless steel edge profile. Welds were made in PA and PB welding positions, using different welding parameters and protective gases. The visual method was used to obtain the number of spatters formed with each weld. The results were analyzed and compared to each other to see the effect of welding parameters and protective gas on the number of spatters. We also monitored the time spent on removing the spatter and compared it with the welding time. It was found that the biggest impact on reducing the number of spatters has the choice of the protective gas. However, the different welding source settings, the cleanliness of the gas nozzle and the wear of the contact nozzle had less influence.

• Keywords: loading space, welding parameters, protective gas, MAG welding, contact nozzle, spatter