科研之友
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摘要
Non-mandrel drawing process is available for producing aluminum tube with rectangular cross-section. The corresponding dynamics and finite element models were developed based on FEM software during the investigation. The influence curve of different semi-die angle on drawing load was achieved, and a proper value a"2 = 11°was found. When tube blank instability occurred during drawing, the stress along the section profile increased substantially. Thus the drawing die sizing section got optimized with β= 178°to prevent blank instability. Then the touch-stress distribution of three key points was evaluated for selecting proper lubricant. Finally, the tube drawing experiments were performed to verify the effectiveness of the appropriate die.
- 出版日期2008
