ANALYSIS ON THE TEMPERATURE FIELD DURING Al2O3sf/LY12 COMPOSITES LIQUID-SOLID EXTRUSION PROCESS USING 3D FEM SIMULATION
西北工业大学机电学院
Cite this article:
. ANALYSIS ON THE TEMPERATURE FIELD DURING Al2O3sf/LY12 COMPOSITES LIQUID-SOLID EXTRUSION PROCESS USING 3D FEM SIMULATION. Acta Metall Sin, 2007, 43(8): 857-862 .
Abstract In the present work, the 3D FE mathematical model which characterized the heat conduction in composites liquid-solid extrusion process was established. The 3D temperature field was obtained to reveal the temperature distribution and evolution of the billet using 3D heat conduction numerical simulation. The results indicated that during the pressure-keeping stage, the temperature field distributed evenly at the surface and inner part of the billet. In the extrusion process, however, they fluctuated tempestuously which lead to partial overheating on billet surface and result in superficial crack. The flaw analysis and forecast were validated to the experimental result of extruded product. The work laid a theoretical and technical foundation for the rational choice of process parameter to enhance product quality.
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