MIM process

Application of Polymer Technology to Metal Injection Molding (MIM) Processing... 

Application of Polymer Technolo to MIM Processing Table 1. Binder Requirements [1,5]. 

Thermoplastic based binders are by far the most widely used. These forms of binder usually contain a wax as a major component and a thermoplastic as the minor component. Additives are usually added for lubrication, viscosity control, wetting and improving powder-binder interaction. Debinding of such binders is normally achieved via thermal degradation, wicking, solvent extraction or even photo-degradation. Thermoplastics commonly used include polyethylene, polystyrene, polypropylene and ethylene vinyl acetate. Table 2 highlights some of the common thermoplastics used in PIM or MIM processes. 

Figure 6. Range of shear rates experienced by a feedstock during a typical MIM process.

Throughout the entire MIM process, the feedstock is repeatedly subjected to elevated temperatures. Hence,... 

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