ABSTRACT We consider the effect of water spray configuration on the fineness and uniformity of a metal powder produced by water atomization of a melt stream. The effects of water spray travel distance, nozzle design, water pressure, melt superheat, and apex angle on the particle size distribution of a metal powder is studied via a laboratory-scale water atomizer; the main focus is on the first two, which are usually fixed parameters of the atomizer. Correlations are proposed relating the mass median size and standard deviation of the powder to the parameters cited. Similar correlations for water pressure, melt superheat, and apex angle have been reported elsewhere; we present data on these effects to confirm the validity of our results, especially as Bi-42%Sn powder has not been studied before. What is new are results on the effect of water spray travel distance and nozzle design on the mass median size and standard deviation of powder.

中文翻译：

---

金属粉末的水雾化：喷水配置的影响

摘要 我们考虑了喷水配置对由熔体流的水雾化产生的金属粉末的细度和均匀性的影响。通过实验室规模的水雾化器研究了喷水行进距离、喷嘴设计、水压、熔体过热度和顶角对金属粉末粒度分布的影响；主要关注前两个，它们通常是雾化器的固定参数。建议将粉末的质量中值尺寸和标准偏差与引用的参数相关联。其他地方也报道了水压、熔体过热度和顶角的类似相关性；我们提供了有关这些影响的数据以确认我们结果的有效性，尤其是因为之前没有研究过 Bi-42%Sn 粉末。