In this study, the commercially pure aluminum powder was compacted by single-action and floating dies at room temperature. The effect of compaction method on densification was studied using density distribution, microhardness measurements and scanning electron microscope (SEM) along the compaction axis of processed samples. The density measurements of compacted samples through the floating die process shows more uniform density distribution in comparison with single-action process, which is in good agreement with microhardness and SEM results. Results also show that the densification requires lower compaction load in floating die process than is needed in single-action compaction process, which is due to the improvement of the frictional condition by making change in relative movement in the frictional surfaces of floating die process. Therefore, it makes floating die more beneficial in producing dense compacts with high aspect ratio (ratio of height to diameter) which is not possible in single-action die compaction process.

中文翻译：

---

生产高纵横比致密压块的浮动和单动模具研究

在这项研究中，商业纯铝粉在室温下通过单动和浮动模具压实。使用密度分布、显微硬度测量和沿加工样品的压实轴的扫描电子显微镜 (SEM) 研究了压实方法对致密化的影响。与单动过程相比，通过浮动模具过程压实样品的密度测量显示出更均匀的密度分布，这与显微硬度和扫描电镜结果非常吻合。结果还表明，与单动压实工艺相比，浮动模具工艺中的致密化需要更低的压实载荷，这是由于通过改变浮动模具工艺的摩擦表面的相对运动来改善摩擦条件。所以，