Optimization of Nd:YAG Laser Welding Factors of Cold Rolled Strenx 700 CR Steel by Taguchi Method

Authors : Oğuz TUNCEL, Hakan AYDIN

Pages : 85-92

Doi:10.21605/cukurovaumfd.1273719

View : 9 | Download : 7

Publication Date : 2023-03-30

Article Type : Research Paper

Abstract :In this study, cold rolled Strenx 700 CR steel with a minimum yield strength of 700 MPa, which is typically used in load bearing structures to produce stronger and lighter structures, is butt welded with Nd:YAG laser welding. The effect of welding factors on tensile strength is investigated by using laser power rate insert ignore into journalissuearticles values(20%, 40% and 60%);, pulse duration insert ignore into journalissuearticles values(2, 4 and 6 ms); and pulse frequency insert ignore into journalissuearticles values(3, 5 and 7 hz);. By using Taguchi L9 orthogonal experimental design, the number of experiments, which should be 27 when full factorial, is reduced to 9 experiments. The tensile strength test results are optimized by the Taguchi method\`s larger is better control characteristic. The optimum test combination for maximum tensile strength is determined as A3B2C2 insert ignore into journalissuearticles values(60%-4 ms-5 hz);. The effect of the welding factors on the tensile strength results is analyzed using the analysis of variance insert ignore into journalissuearticles values(ANOVA); method and it is found that the most effective factor is the laser power rate with 84.26%.
Keywords : Nd YAG lazer kaynağı, Strenx 700 CR çeliği, Taguchi yöntemi, Optimizasyon, ANOVA