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《The Chinese Journal of Nonferrous Metals》 2002-01
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Novel technology for plasticizing powder extrusion molding

ZHOU Ji cheng, HUANG Bai yun (State Key Laboratory for Powder Metallurgy, Central South University, Changsha 410083, China)  
For vacuum worm type extrusion press, the physics essence of plasticizing powder extrusion molding (PEM) process based on a novel binder system, and using cemented carbide powder as a test material, has been analyzed. The material functions have been deduced by rheological method. The non isothermal debinding mechanism and dynamics of binder and extrusion molding bodies was studied by thermogravimetric analysis method. Combined with theoretical analyses and experimental results, a novel multi component binder has been developed successfully, and the PEM processes parameters and condition were optimized. The cemented carbides PEM rods, with diameters up to 20?mm are manufactured.
【Fund】: 国家自然科学基金资助项目 (5 963 412 0 );; 博士后基金资助项目
【CateGory Index】: TF124.34
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