CARACTERIZAÇÃO E ESTUDO COMPARATIVO ENTRE OS PROCESSOS GMAW E SMAW NA SOLDAGEM DE AÇO ESTRUTURAL ASTM A606, APLICADOS NA CONSTRUÇÃO CIVIL E MINERAÇÃO
The article makes a general study of Gas Metal Arc Welding (GMAW) and Solid Metal Arc Welding (SMAW) welding, welded on structural steel under the American Society for Testing and Materials (ASTM) A606. The welding process and its applicability in the construction and mining industry are presented. This work has as a starting point, the concepts of welding processes, thermal aspects involved, metallurgy, Thermally Affected Zone (ZTA), recurrent discontinuities and the result of mechanical tests. The material was welded to specimens in both processes. The mechanical test was evaluated, the anchoring in the bending of the material in the weld bead and characteristics of the weld quality. It was found that the material welded with SMAW showed greater tensile strength. It is also concluded, the greater hardness in the ZTA of the material welded with GMAW.