Investigation of Experimental and Numerical Analysis on Extrusion Process of Magnesium Alloy Fin Structural Parts

摘要

The paper mainly studies the experimental and numerical analysis on the hot extrusion process of AZ31 and AZ61 magnesium alloy fin structural parts with extrusion ratio of 8.03. For the extruded product, the cross-sectional diameter of its central cylinder is 20mm, and there are 6 fins being 2mm thick each, with an interval of 60 degrees between fins. The study explores the effects of different billet heating temperatures (300-360℃) and extrusion speeds (2-6mm/s) on the forming load and the appearance of finished product. The extruded finished product takes hardness test, and compressive strength test at its fin plate so as to understand the effects of process parameters on its mechanical properties. Besides, the finite element analysis software, DEFORM-3D is used to carry out simulation analysis of extrusion so as to understand the billet deformation behavior, metal flow and speed distribution in the forming process. Finally, the study carries out comparative analysis on the simulative and experimental results in order to prove the accuracy of the simulation analysis.