摘要
根据拉瓦尔喷管原理设计出一种新型低压超音速雾化器 ,用 6 3A焊锡和Sn Ag系无铅焊锡进行了雾化试验研究。试验结果表明 ,新型雾化器可获得微细的球形焊锡合金粉末 ,可以满足表面组装技术 (SMT)用焊锡粉的要求 ,焊锡熔化温度为 4 0 0～ 4 5 0℃ ,雾化压力为 0 .7～ 1.0MPa。影响微粉粒度形成的主要因素有合金过热度 ,雾化压力 。
A new type atomizer designed on the theory of Laval jet is tested in atomization experiment with 63A solder and Sn Ag lead free solder. The result indicates that the fine and ball shape solder alloy powder can be gotten by using the new atomizer with the melt temperature 400～450℃, the atomizing pressure 0.7～1.0MPa, meeting the requirement of surface mounted technology. It is found that the overtemperature of the solder alloy, atomizing pressure and oxygen content in atomizing environment are main factors to influence the particle size of the powder.
出处
《材料开发与应用》
CAS
2003年第4期30-31,35,共3页
Development and Application of Materials
基金
陕西省教委自然科学基金资助项目(0 2JK133)
