LUBRICATION EFFECTS IN THE COMPACTION OF SPONGE-IRON POWDER AT LOW AND HIGH SPEEDS

Abstract

The effects of the amount and method of lubrication have been investigated when compacting Höganäs sponge-iron powder, NC100-24, at both low and high speeds. Pressing characteristics, ejection loads, and the final properties of the sintered compacts were markedly affected by both the amount and the method of lubrication. From the results obtained, an optimum amount of admixed zinc stearate is recommended for both low and high-speed conditions.