Powder Technology, Vol.363, 569-574, 2020
Evaluation of an advanced powder-die frictional model
It is known that the shape of a cutting insert blank, after pressing and sintering, can be predicted with finite element (FE) simulations. It is also known that such simulations have the potential to save costs and time when used for press tool compensation. However, in such simulations (and in a real situation), the frictional behaviour has a great influence on the results. Therefore, in this study, two frictional models are discussed and implemented into a commercial FE-program. The results from the different frictional descriptions, when for instance analysing density after compaction, shows a clear difference. It can be concluded that the frictional behaviour at powder pressing has to be modelled in detail, also at low forces. (c) 2020 Elsevier B.V. All rights reserved.
Keywords:Powder pressing;Cylindrical die;Cemented carbide powder;Frictional behaviour;Finite element analysis;Relative density