Influence of the Lubricant Particle Size and Concentration on the Ejection Behaviour at Various Compaction Rates

摘要

The development of new lubricants for single compaction requires an excellent understanding of thelubrication mechanisms, with the goal of optimizing their performance. The lubricant particle sizedistribution was already shown to have a significant impact on the ejection behaviour. This paperfocuses on the more complex effects of the particle size distribution of the lubricant through theevaluation of the compaction and ejection performance given different concentrations of a mixture offine and coarse lubricants and with various compaction parameters. FC-0208 powder mixes withdifferent lubricant particle size distributions and concentrations were evaluated on an industrialmechanical press operating at various stroke rates and die temperatures. The ejection behaviour wasrecorded and compared to other parameters such as the springback and the green density.