Characterisation of powder bulk, dynamic flow and shear properties in relation to die filling

摘要

Understanding powder behaviour duringnpreparation, transfer and filling of diesnis important in powder metallurgy sinceneach step influences the quality of thenfinal component. For high productivitynand quality during manufacture, it isnessential that process and powderncharacteristics are compatible. Thisninvestigation of the bulk, dynamic flownand shear properties of four materialsndemonstrates that die fillingneffectiveness correlates well with manynpowder properties. Thus the availabilitynof accurate information about the flownand bulk properties of powders shouldnallow reliable prediction of die fillingnefficiency, removing any need for thenmore usual ‘trial and error’ approach.