基于压电换能器的新型超声波助焊技术

利用超声波的机械作用,将超声波应用到焊接技术中,提出一种超声波助焊技术。超声波发生装置发出高频振荡信号,通过压电换能器转换成高频机械振荡而传播到介质,超声波在焊锡溶液中向前辐射,产生较强的压力,使焊锡溶液在瞬间有较大的振荡速度,降低焊锡溶液的表面张力,确保焊锡溶液在被焊接物表面顺利扩展、流动、浸润,提高焊锡溶液的浸润度。实验结果表明,超声助焊能明显提高焊锡对导线的浸润,提高导线焊接质量。

Ultrasonic Welding promoting Technique Based on Piezoelectric Transducer

Using the mechanical effect of the ultrasonic wave,the ultrasonic welding-promoting technique has been presented.The ultrasonic wave generating device generates a high-frequency oscillation signal;a high-frequency mechanical vibration,converted by the piezoelectric transducer,transmits to the medium;the ultrasonic wave radiates forward in the solder solution,resulting in a strong pressure and an instant oscillation in the solder solution,lowering the surface tension of the solder solution,ensuring the expansion,flow and infiltration of the solder solution on the welding surface,so as to improving the infiltration of the solder solution.Experimental results show that the ultrasonic welding-promoting technique can enhance the infiltration of the solder solution on the wire and the welding quality has been significantly improved.