Effect of compaction scheme on property distribution for cumulative chargefacings formed from a heterogeneous powder composite

An experimental and numerical (finite element method) study is carried out for the effect of forming scheme on property distribution for cumulative ch arge facings: made from composite heterogeneous powder material. An experim ental procedure is developed for studying powder particle flow kinetics. it is shown that use of composite punches and partition of the moulded materi al into a number of sub-divisions with their successive compaction achieves a more uniform density distribution for an article. It is demonstrated how the direction of the force of friction on the die walls during compaction affects the compaction of articles with faces that are not perpendicular to the direction of the pressing. The results obtained make it possible to se lect the optimum compaction regime taking account of production feature con nected with powder material composition as well as service characteristics.