ESAB now offers a free CD-Rom called âPulsed MIG Weldingâ? that explains the features and benefits of this welding process, also sometimes referred to as pulsed MIG/MAG welding or pulsed arc MIG welding. Often used for welding aluminium and stainless steel, as well as carbon steel, pulsed MIG welding produces a stable, spatter-free arc, even with low welding data. Pulsed MIG is popular for welding thin sheet material, as heat input and distortion are low. The CD-Rom describes the short arc and spray arc welding processes, plus the thermal pulsing that is sometimes used with TIG. The shortcomings of these processes are outlined. There follows an explanation of pulsed MIG welding. This includes a discussion of arc length self-correction, wire stick-out, material transport in the arc, and the critical current limit. The CD-Rom explains controlled melting of the filler wire, achieving droplet pinch-off without spatter, adapting to variations in wire stick-out, drop short-circuit correction, short-circuit handling, and crater filling.
