Production of Hollow Spheres of Eutectic Tin-Lead Solder through a Coaxial Nozzle
Production of Hollow Spheres of Eutectic Tin-Lead Solder through a Coaxial Nozzle
复制标题
通过同轴喷嘴生产共晶锡铅焊料空心球
DOI：
10.1299/jmmp.4.1530
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发表时间：
2010
期刊：
影响因子：
--
通讯作者：
T. Minemoto
中科院分区：
文献类型：
--
作者：
Truong V. Vu;H. Takakura;J. Wells;T. Minemoto
直径为 3.5 至 4.5 毫米的空心共晶锡铅焊球直接由熔体生产。放置在坩埚中的原始焊料在通常比其熔点高约50±0℃的温度下熔化。然后将熔融焊料通过安装在坩埚底部的同轴喷嘴的外喷嘴在室温下垂直向下挤出到空气中。挤出的空心熔融焊料射流的毛细管不稳定性导致空心焊料球的形成。这种形成是由靠近同轴喷嘴放置的横向喷嘴辅助的，该喷嘴引导惰性气体通过球体分离位置处的中空射流。然后将球体快速冷却并通过水雾固化，然后收集到装满水的容器中。大多数这些球体是完全密封的并且具有相对光滑的表面。还形成了空心水球作为通过喷嘴生产空心焊料球的测试。
Hollow eutectic tin-lead solder spheres with diameters from 3.5 to 4.5 mm have been produced directly from the melt. Raw solder placed in a crucible was melted at a temperature of typically about 50 0 C above its melting point. The molten solder was then extruded vertically downward into air at room temperature through the outer nozzle of a coaxial nozzle mounted at the crucible bottom. Capillary instability of the extruded hollow molten solder jet led to the formation of hollow solder spheres. This formation was assisted by a transverse nozzle placed close to the coaxial nozzle, which directed an inert gas past the hollow jet at position where sphere detached. The spheres were then quickly cooled and solidified by water mist prior to collection in a container filled with water. Most of these spheres were completely hermetic and had a relatively smooth surface. Hollow water spheres were also formed as a test of production of hollow solder spheres through the nozzle.