| Summary: | 碩士 === 國立臺北科技大學 === 工業工程與管理研究所 === 98 === This research is about the optimization study on Cu-Fe dissimilar metals in DC Resistance Spot Welding. In this study, 100 mm × 25 mm × 1t mm material of iron (JIS-G3141 SPCE) and copper (JIS-C1100) for resistance spot welding processes, use DC power supplies for resistance spot welding. Electrode materials were for the molybdenum and chromium copper alloy plane electrode. Study of three influencing control factors: welding current, welding time and the electrode force of the welding results. Finally, Used Tensile-shear test to assessed differences of Tensile-shear strength and nugget.
This study had used Taguchi method of the L8 orthogonal array to plan the experiment, the Taguchi method of factor analysis and ANOVA to identify the optimum process parameters, and use back-propagation network (BPN) to assist in identifying optimum process parameters and predict the optimum process parameters results. Eventually, by the confirmation test and verify the results calculated confidence interval.
The results show that using the Taguchi method, ANOVA, and the back-
propagation network of the optimum process parameters are: the welding current 12 (kA), welding time 6 (cycles) and the electrode force 240 (kg). The experiment also confirmed that the optimal combination of parameters with a reproducibility.
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