Parameter Optimization of Fiber Laser Cutting of Stainless Steel using Taguchi Method

This study focuses on the optimization of laser cutting parameters using the Taguchi method and L16 (4^4) orthogonal array to improve the slags height, the formation of heat-affected zone (HAZ), and surface roughness. Based on the signal-to-noise ratio (SN ratio) and analysis of variance (ANOVA), it was found that the focal position (A) had the greatest impact on dross height, contributing to 74.21% of the variation. The formation of HAZ was mainly influenced by power (C) and gas flow rate (D), contributing 42.95% and 46.61%, respectively. As for surface roughness, it was affected by other factors. The optimal parameter combinations for dross height (A4B1), HAZ (C3D2), and surface roughness (A4D2) were determined through the SN ratio response graph, and the best solution was found to be A4B1C3D2. These findings have improved the efficiency, accuracy, and quality of the laser cutting process. Future research should explore the interactions between parameters and address challenging materials such as titanium alloys and quartz glass to further refine laser cutting parameters and expand their applications. The focal position plays a crucial role in improving cutting results, reducing dross height, minimizing HAZ, and decreasing surface roughness.