声表面波滤波器平行封焊飞溅多余物控制的研究

Study on the Control of Spatter Contaminants in Parallel Welding of Surface Acoustic Wave Filters

摘要:

通过分析因飞溅多余物而失效的声表面波滤波器，证明了飞溅多余物是由平行封焊工序产生的。研究了平行封焊工序中相关焊接参数对平行封焊的影响，通过调节焊接功率、时间和速度等参数，将焊缝宽度和焊点重叠区域面积调整至理想范围内，在保证焊接质量的同时，将飞溅多余物产生的概率降至万分之二。另外，选取熔点更高的电镀镍盖板来代替化学镀镍盖板，进一步减少了平行封焊过程中飞溅多余物的产生。

Abstract:

By analyzing surface acoustic wave filters that failed due to spatter residue， it was confirmed that the residue was generated during the parallel welding process. The influence of key welding parameters on parallel welding was studied. By adjusting welding power， welding time， welding speed， and other parameters， the weld width and overlap area were optimized to fall within the ideal range， reducing the probability of spatter residue to 2 in 10 000 while maintaining welding quality. Additionally， an electroplated nickel plate with a higher melting point was selected to replace the electroless nickel plate， further reducing spatter residue generation during the parallel welding process.