A new type of binder for metal injection molding

A new wax–oil–polyethylene (PE) binder was developed for Fe–2Ni injection molding. The advantages of both wax-based and oil-based binders were acquired. Moreover, the debinding solvent could be recycled. The miscibility of its ingredients and the characteristics of the binder were evaluated and preferable performances were obtained for this new binder. The maximum powder loading could reach 60 vol.%, and the debinding rate was over 2 mm/h. The drying time for 6 mm thick samples was less than 20 min and the recycle ratio of the debinding solvent was over 95 wt.%.