ABSTRACT Iron-based powder mixtures were prepared by dry and wet mixing method. The friction properties during compaction were tested by measuring the internal and external friction coefficient. The test results showed that the wet mixing process could realise the homogeneity of lubricant and improve the processing properties of the powder mixtures. With 0.6 wt-% lubricants, wet mixing powder mixtures have a flow rate of 29.6 s/50 g, an apparent density of 3.18 g cm–3, a repose angle of 35.5°, and the friction coefficient during the compaction is 0.223. An equation to calculate the total (both internal and external) friction forces during the compaction process is proposed, and then the factors influencing the friction coefficient during compaction were quantitatively analysed.

中文翻译：

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粉末混合物压实过程中的加工性能和摩擦行为

【摘要】：采用干湿混合法制备铁基粉末混合物。通过测量内部和外部摩擦系数来测试压实过程中的摩擦性能。试验结果表明，湿法混合工艺可以实现润滑剂的均质化，提高粉体混合物的加工性能。使用 0.6 wt-% 润滑剂时，湿法混合粉末混合物的流速为 29.6 s/50 g，表观密度为 3.18 g cm-3，休止角为 35.5°，压实过程中的摩擦系数为 0.223。提出了压实过程中总（内外）摩擦力的计算公式，并定量分析了影响压实过程中摩擦系数的因素。