Modelling Heat Input of Pulsed GMAW as the Function of Weld Geometry

Modern metal fabrication would not be possible without highly efficient welding processes. One of them is Gas Metal Arc Welding (GMAW), which has several variants, including pulsed. Pulsing significantly reduces spatter and is widely used in fully mechanized and robotic welding systems. On the other side, large-scale welding needs adequate and efficient heat input and seam geometry control. This paper presents models describing heat input as the function of required weld geometry. Research has been made using low-alloyed structural steels with two thicknesses, 4 mm and 8 mm, using pulsed GMAW in horizontal position, while models have been developed using statistical tools. This paper elaborates advantages and disadvantages of such approach, as well as comparison with similar concepts available in literature.