Abstract
Considered the most traditional and widespread welding process, stick electrodes are differentiated mainly by the chemical composition of their coating, being of cellulosic, rutile, basic, high yield and acid reaction types. In this context, the present study has the main objective of characterizing the performance of different stick electrodes applied in manual welding. To this end, welding tests were performed in the flat and angle joint position, with direct current and alternating current, on SAE 1020 steel plates, being evaluated five electrode specifications: E6010, E6011, E6013, E7018 and E7024. The study is supported by acquisitions of electrical signals from the process, as well as macro-graphic analysis of the weld beads, which enabled the calculation of the dilution of the weld beads. The results showed the static characteristic of the arc and the melting and deposition rate of the electrodes. In addition, the potential of using alternating current with three of the electrodes tested was investigated. These studies showed, in general, the melting and penetration potential of the cellulosic electrodes, the high deposition rate of the basic electrodes, the arc stability of the rutile electrodes, besides showing the high deposition efficiency of the electrodes with addition of iron powder.
Keywords: SMAW, MMA, Arc Welding, Fusion Rate, Deposition Rate
Reference:
ROSA, A. F.; BATISTA, F.; LEMOS, V. I. B.; SILVA, R. H. G.; DUTRA, J. C.. Experimental Analysis on the Performance of SMA Welding Electrodes. 26th ABCM International Congress of Mechanical Engineering. November 22-26, 2021. Florianópolis, SC, Brazil