Research On Laser Soldering Technology Of Inter-board Electrical Connector

With the gradual miniaturization and integration of new aerospace products,the application of inter-board electrical connectors is more and more extensive.Because of the characteristics of high pin density,large number and anti-misalignment,the welding efficiency is low in actual production,which directly affects the production efficiency and quality.In order to meet the high-quality requirements of aerospace electronic products,a new welding technology-laser soldering process is studied for a batch of J80 C type inter-plate electrical connectors,aiming at solving the problems of low welding efficiency and poor tin passing rate in actual production.Through the research on the welding process of laser soldering,it can realize the effective welding of the electrical connector between the plates without affecting the welding quality.Based on the experience of traditional welding process,the welding temperature simulation analysis and preliminary laser welding test of the inter-plate electrical connector were carried out by finite element analysis.The control of process parameters and the optimization of process route were completed,and the feasibility of laser soldering for inter-plate electrical connector welding was verified.X-ray detection,environmental test,metallographic analysis and EDS scanning were carried out on the optimized results,and the reliability analysis of the macroscopic morphology and microstructure of the solder joints was carried out.It was determined that the solder joint had good tin rate and good alloy layer structure,and met the requirements of aerospace electronic products standards.The reliability of the process parameters was determined,and the welding efficiency and welding quality of the inter-plate electrical connector were effectively improved.