2. Feedstock components and composition

Feedstock preparation is a fundamental step in the PIM process. It is generally carried out using mixers and/or extruders under a high shear rate, to ensure good mixture homogeneity.

A relatively large quantity of powder must be incorporated into the binder to ensure part cohesion. However, excess powder results in high system viscosity, making injection difficult. As a result, cracks may appear during subsequent process steps.

Too much binder, on the other hand, can cause parts to collapse...