Investigations of the Mold Filling Process in Powder Injection Molding
Powder injection molding(PIM)reveals considerable technical options for the production of metal and ceramic components.Due to the possibility of large-scale series production it also exhibits a great economic potential.Nevertheless,the mold filling step reveals distinctive specialities which are mainly a result of the highly powder filled feedstocks.At a couple of institutes worldwide examinations are running to investigate these phenomena,an overview will be given.At KIT a special experimental tool partially equipped with glass inserts had been designed with the possibility to mount different mold inserts incorporating defined test geometries.Through the glass section an inline observation of the filling process was feasible.Parameters and cavity geometries had been varied and the occurring flow profiles had been documented by video.In parallel the filling process was simulated using commercial software routine based on one-phase material model.The shear rate profiles have been calculated,too.Depending on the flow profile(divergent,convergent stream etc.)more or less serious discrepancies between experimental and calculated results were determined.
Powder injection molding Feedstocks feedstock rheology flow behavior shear rate
Piotter Volker Klein Alexander Plewa Klaus Stepanov Andreas Walter Heinz
Karlsruhe Institute of Technology(KIT),Institute for Applied Materials(IAM-WK)P.O.Box 3640,76021 Karlsruhe,Germany
国际会议
北京
英文
603-607
2018-09-16（万方平台首次上网日期，不代表论文的发表时间）