首页|Research on Extrusion Velocity in Freeform Extrusion Fabrication of Aqueous Alumina Paste

Research on Extrusion Velocity in Freeform Extrusion Fabrication of Aqueous Alumina Paste

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The Freeform Extrusion Fabrication (FEF) is a Solid Freeform Fabrication process, which fabricates 3D ceramic green parts by extruding an aqueous ceramic paste of high solids loading. The extrusion velocity is a very important parameter and should be better understood. In this paper, experiments were carried out to investigate extrusion velocity in FEF extrusion process of aqueous alumina paste. It is found that the extrusion velocity has a corresponding relationship with extrusion force. The extrusion run can be divided into 4 stages: compaction stage, transient stage, steady stage and stop stage. The step ram velocity input was applied in FEF process and improved the extrusion velocity profiles in transient stage.

freeform extrusion fabricationalumina pasteextrusion velocityram extrusion

Liu Hong-jun、Ming C. Leu

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State Key Laboratory of Gansu Advanced Non-ferrous Metal Materials, Lanzhou University of Technology, 287 Langongping Road, Lanzhou, Gansu 730050, P.R.China

Department of Mechanical and Aerospace Engineering, Missouri University of Science & Technology, 1870 Miner Cycle, Rolla, Missouri 65409-0050, U.S.A.

2010

Key engineering materials

Key engineering materials

ISSN：1013-9826
年,卷(期)：2010.419/420