Optimizing Welding Processes: Impact of Laser Power and Gas Flow Rate on Deformation

This research conducted a comprehensive second-order full factorial experiment involving 20 experimental samples to investigate the impact of key welding parameters on deformation after the welding process. The factors studied included laser power, welding speed, and gas flow rate, with each factor having five distinct levels. The analysis revealed significant findings: laser power exhibited a substantial influence on deformation, with a remarkably low P-value of 0.0 and a T-value of 94.36, while gas flow rate also played a significant role, with a P-value of 0.0 and a T-value of 107.94. Conversely, square terms and two-way interaction terms did not demonstrate significant effects, with P-values exceeding the 0.05 statistical significance threshold. A regression equation was constructed to predict deformation based on these findings, although the model’s predictive accuracy for new data was somewhat limited, as indicated by a predicted R-squared value of 67.29%. Nonetheless, this research provides valuable insights into optimizing welding processes to minimize deformation, thereby enhancing product quality. The normal probability plot confirmed the reliability of the model.