Experimental research on melting and deposition characteristics of wires during gas metal arc welding

6th ModTech International Conference - Modern Technologies in Industrial Engineering

Gheonea, M.C.^1 ; Mihilescu, D.^1 ; Florescu, S.N.^2 ; Scutelnicu, E.^1

'Dunarea de Jos' University of Galati, Department of Manufacturing Engineering, 47 Domneasca St., Galati

800008, Romania^1

National Research Institute of Marine Geology and Geoecology, 23-25 Dimitrie Onciul St., Bucharest

024053, Romania^2

关键词: Comparative analysis;    Deposition characteristics;    Experimental research;    Gases mixture;    Metal active-gas welding;    Shielding gas;    Welding position;    Welding wires;   

Others  :  https://iopscience.iop.org/article/10.1088/1757-899X/400/2/022027/pdf
DOI  :  10.1088/1757-899X/400/2/022027

来源: IOP

【 摘 要 】

The paper presents a comparative analysis related to the melting and deposition characteristics of different welding wires of 1.2 mm diameter, such as solid (ER70S6), basic flux-cored (E70T5CJH4), rutile flux-cored (E71T1MH4), metal-cored (E70C6MH4), and low fume metal-cored (E70C6MH4) used in Metal Active Gas Welding, Flux-Cored Arc Welding and Metal-Cored Arc Welding. Two-gases mixture, comprising 82% argon and 18% carbon dioxide, known as M21 (Corgon 18) shielding gas, was used during experiments to protect the contamination of the molten weld pool against oxygen, nitrogen, and hydrogen. Five weld beads have been deposited on S275N steel sheets in horizontal welding position (1G/PA), by employing the filler metals mentioned above. Based on the experimental results and comparative analysis, significant information on melting and deposition characteristics has been achieved. The experimental results have revealed that the lowest loss ratio was achieved in the case of MCAW with low fume metal-cored welding wire (E70C6MH4).