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Mechanical Model on Dry Pressing of Surface Modified Powder

LI Guodong

（Xiangfan University‚Hubei）

Abstract: Ultrafine powder without hard agglomeration after modification had better performance of dry pressing．Under given stress dispersion and flowability of powder have been improved remarkably by antifricton and lubrication of surface monmoleculer aliphatic layer of powder．Stress transmission during mid－and－later period of pressing process accords with Parsk model and average－reducing model．

Keywords: surface modified powder‚dry pressing‚mechanics model‚ceramics


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