DefinePK

Abstract

The use of flux during welding is important because it prevents the formation of oxides thereby giving a better profile to the weld. In this study, nano- flux powder (CaO) developed from agrowastes (eggshell) and commercial flux powder were used during Metal Inert Gas (MIG) Welding. Materials prepared and welded were galvanized, stainless and mild steel plates and rods of 50 x 50 x 10 mm. The SEM and EDX of the fluxes were carried out while the welded joints of each samples were subjected to tensile, hardness and surface morphology tests using SEM. The high volume of 57.10% Iron and 29.45% Calcium respectively confirmed that the fluxes were Iron and Calcium Oxides suitable as fluxes for the welding. The mechanical properties of the joints proved better in nano flux than the commercial and when no flux applied.