Transactions of Materials and Heat Treatment

Title：FEM analysis of drawing-thickening technology in stamping-forging hybrid process

Authors： WANG Xin-yun OU Yang-kun XIA Ju-chen HU Guo-an(State Key Lab of Material Processing and Die and Mould Technology Huazhong University of Science and Technology Wuhan 430074 China)

Unit：

KeyWords： stamping-forging hybrid forming drawing-thickening double-cup-shaped workpiece numerical simulation

ClassificationCode：TG386

year,vol(issue):pagenumber：2009,34(4):73-78

Abstract：

Combined the characteristics of cold extrusion with drawing process,a drawing-thickening technology with axial-force was prompted for double-cup-shaped workpieces.An axial thrust was exerted to the sidewall during backward drawing to achieve the purpose of drawing and thickening.The FEM software Dynaform was utilized to research the material flow and to analyze the impact of the shape of pressure ring and binder,the velocity of the pressure ring,the binder force and the effect of gap between punch and punch-die to the minimum workpiece thickness and maximum one.The results show that the pressure ring can force the outer wall metals to flow to the interior wall.The minimum workpiece thickness and maximum one increase monotonously with the pressure ring velocity increasing until they reach the peak value.

Funds：

国家自然科学基金资助项目(50705034)

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