Harmful emissions of welding aerosol during pulse-arc welding of structural aluminum alloy D16

Abstract The results of investigations of chemical composition and emission rates of the welding fume (WF), generated during pulse-arc welding of D16 aluminum alloy with ER4043 and 2319 solid-section wires, are presented. It was established that when welding with ER4043 and 2319 wires, such harmful components as aluminum, iron and silicon are present in the WF. It was established that when using ER4043 and 2319 wires, welding fume equally belong to the least harmful “5” class of toxicity and differ in the level of emissions, which varied depending on the welding mode from class “a” to class “b” (in accordance with DSTU ISO 15011). When using ER4043 wire, the level of emissions increases with increasing values of the characteristics of the welding mode. When using wire 2319, the maximum values of the aerosol emission level are at a frequency of 100 Hz.