High Performance Mixes with New Lubricants
Higher density is required to obtain higher mechanical properties of PM components, in particular for the fatigue strength. Besides the compressibility of the base powder, the lubricant and compaction method plays an essential role for compaction of high density. The lubricant type and content are limiting factors to the compressibility due to their low theoretical density. However, by improving the efficiency of the lubricant, a lower added content of lubricant can be meet the requirement of during ejection and thus higher density can be achieved. In this paper, an increased density by using high performance lubricant in Fe-Cu-C mixes as well as excellent green strength and higher tensile strength after sintering, will be presented.