QUALITY IMPROVEMENT OF MICRO METAL INJECTION MOULDING USING MICRO/NANO POWDERS

Euro PM2005 Conference & Exhibition, 2-5 Oct. 2005, Prague, Czech Republic 

INTRODUCTION：
Using finer metal powders is one of solutions to improve the dimensional accuracy and surface roughness of sintered products. This study aims to investigate the effects of hybrid micro/nano powders in “_-MIM” process. To produce the tiny specimens in high trial efficiency and small amount of feedstock, a novel minute mixing and injection moulding machine which can mould by only 3cc (equivalent to 1 pellet) without pelletizing was used. The effects of binder content and nano-scale copper powder loading on the melt viscosity of feedstock, sintered density and microstructure of sintered bodies were studied.