家电产品基板焊点抗开裂评价的浅析

On evaluation of welding spot cracking resistance of housedhold appliances

家电产品基板组件在使用过程中由于反复温度变化造成热疲劳损坏,致使元器件的焊点出现裂纹,长此以往,将出现电气的接触不良,甚至造成事故。焊点抗开裂试验以及断面解析相结合的评价方法实现了对焊点寿命的评价,能够在产品设计阶段就发现焊锡裂纹的不良从而加以改善,降低了家电产品在安全耐用年限内因为焊锡裂纹引起的发烟发火事故的风险。同时,提出了加速试验方法,大大缩短了试验时间,适合企业的实际应用。

Due to the repeated temperature changing in the course of using, the household electrics substrate components will be thermal fatigue damaged, making cracks of welding spot of the components and parts, which leads to poor contact of the electrics in long term and even causes accidents. The evaluation method of the combination of welding spot cracking resistant test and the section parsing realizes the evaluation of the welding spot lifetime, discovering solder crack badness from the designing period, and thus improving, reducing risk of smoking and firing accidents from solder cracks of household appliances during the safe and durable period, At the same time, it brings up the method of acceleration test, greatly shortening testing time, which is fit for the practical application of the enterprises.