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Investigating the Effect of Cutting Speed on Heat Affected Zone in Laser Cutting Process of Stainless Steel

This research work investigated the effect of cutting speed, laser power and nozzle diameter on heat affected zone as well as surface roughness in laser cutting process of stainless steel. The practical experiment was carried out using laser cutting machine, while ANSYS finite element modeling (FEM) simulation software was employed in analyzing the responses of the laser beam machining parameters on stainless steel (SS316). The result showed that an inverse relationship exists between the cutting speed of the laser cutting machine and the heat affected zone (HAZ) depth as increasing the laser beam cutting speed consequently reduced the heat affected zone (HAZ) depth in the work-piece. Finally, it can be concluded that using appropriate machining parameters and ANSYS FEM technique could yield a reduction in overall machining costs and saves time for production companies through an economic analysis by applying the technique to predict the optimal machining parameters for their steel products.