ABSTRACT Spherical morphology of metallic powder particles has great demand in powder industry. Manufacturing of such powders requires more energy which makes spherical powders expensive, whereas manufacturing irregular shaped powders is much cheaper. In present context, there has been an attempt in designing and fabricating a laboratory scale apparatus and an economical process to convert irregular powder into spherical morphology. Irregular shaped water atomised powder (size: 25–75 µm) was continuously fed into new apparatus for comminution. The processed powders were subjected to characterization using scanning electron microscopy, circularity analysis, and flow time analysis. Optimum process parameters for obtaining spherical powders have been established for the given powder. An increase in degree of spheroidization from 33.77 to 88.65% has been observed, likewise a significant increment in apparent density and decreased flow time has been recorded. It was established that cyclic wear mechanism was the predominant phenomenon in achieving improved degree of spheroidization.

中文翻译：

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一种不规则形状金属粉末球化的新工艺

摘要金属粉末颗粒的球形形态在粉末工业中有很大的需求。制造这种粉末需要更多的能量，这使得球形粉末变得昂贵，而制造不规则形状的粉末要便宜得多。在目前的情况下，已经尝试设计和制造实验室规模的设备和经济的方法来将不规则粉末转化为球形形态。不规则形状的水雾化粉末（尺寸：25-75 µm）被连续送入新设备中进行粉碎。使用扫描电子显微镜、圆度分析和流动时间分析对加工过的粉末进行表征。已经为给定的粉末建立了获得球形粉末的最佳工艺参数。球化度从 33.77 增加到 88。已观察到 65%，同样记录了表观密度的显着增加和流动时间的减少。已确定循环磨损机制是提高球化度的主要现象。