Numerical simulation of temperature field in multilayer heterogeneity lamination laser soldering

A temperature field numerical simulation is carried out using the finite dement method for laser soldering on PECT (piezoelectric ceramics transformer). A three-dimensional model of laser soldering temperature field of multilayer materials is established. Then, the model was simplified in order to perform an efficient finite dement analysis. Moreover, the temperature distribution characteristic in the laser soldering is investigated and verified by experiments. In all cases, the numerical results are in good agreement with the experimental measurements.     

PECT激光钎焊技术的研究

针对复合结构压电陶瓷变压器（ＰＥＣＴ）叠片式发电元件的侧电极引出问题,对钎焊工艺进行了研究分析,并建立了激光钎焊系统。实践证明,激光钎焊技术应用于ＰＥＣＴ侧电极引出,连接可靠,全连通率高,热影响小;所建立的钎焊系统应用于生产,运行精确可靠,符合激光钎焊要求。