Optimization of Process Parameters Effects on Coercivity Force of Selective Laser Melted Iron Samples

Selective laser melting is a technology for additive manufacturing where parts are produced by melting a powder bed using a laser beam. Because the metal parts produced by this method can have complex and desired geometries, it is considered a modern method for producing electric motor parts, sensors, and other components. The iron powder used in this study is pure one. The input parameters for this method include laser power, scanning speed, and the hatches distance. The design of the experiments was performed using the Taguchi method. Although many studies have been conducted on the mechanical properties of parts produced by this method, less attention has been paid to magnetic properties. In this research, the effect of selective laser melting parameters on the force of pure iron coercivity was experimentally determined. The optimal levels of parameters for achieving the optimal value of this force were determined using signal-to-noise analysis. The main effects and interactions of the parameters were taken into account in this article. The results indicate that the optimal parameter levels for obtaining the lowest amount of coercive force include a laser power of 220 watts, scanning speed of 400 mm/s, and a hatch distance of 70 micrometers. The hatch distance and scanning speed have the most interactive effects on achieving the lowest amount of coercivity.