The bi-phasic numerical simulation of metal co-injection molding

Based on the previous works on bi-phasic explicit algorithms, a new bi-phasic modeling for Metal Co-injection Molding is proposed. The matched algorithm is developed for simulation. When two sorts of feedstocks mixed with metallic powder and plastic binder are co-injected into the mold, their different properties are assigned in simulation, such as the viscous behaviors for the flows of powder and binder phase, densities and powder/binder volume fractions. The filling front, the interface between two types of the feedstock and the powder segregation in each injected feedstock can be predicted. Some simulation results are shown to validate this new algorithm.