Application of pressure swing granulation to hardmetal granulation process

摘要

A novel binderless granulation method, Pressure Swing Granulation (PSG), was applied to the granulation of waxed hardmetal powders in which the conventional spray drying (SD) techniuqe had difficulties in producting good granules. Properties of granules and green compacts from the PSG based process were examined and compared with those from the SD based process. Mechanical properties of sintered bodies were evaluated with a Cemented Carbide Industrial Standard of Japan Cemented Carbide Tool Manufacturers' Association.