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Abstract：
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This paper focused on the comparison between the hollow sinking processes of the uniform wall tube and non\|uniform wall tube.Simulation result shows that the outer wall of the tube become much more uniform after hollow sinking,but the inner wall of the tube is still to have less fluctuating.The result also shows that the fluctuating of tube diameter shouldn't be blamed for the fluctuating of drawing force,but it can cause the increasing of equivalent stress within deforming area,and it will cause significant change to residual stress field.
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Funds：
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中科院特别资助项目
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AuthorIntro：
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Reference：
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1 P Karnezis et al.Study of tube drawing by finite-elementmodeling.Journal of Material Processing Technology,1998(80～ 81) :6 90～ 6 94
2 M Ruminski et al. Analysis of the effects of die shape on thedistribution of mechanical properties and strain field in the tubesinking process.Journal of Material Processing Technology,1998(80～ 81) :6 83～ 6 89
3 H Long et al.FE simulation of the influence of thermal and elasticeffects on the effects of cold-extruded components.Journal ofMaterial Processing Technolgy,1998(84) :2 47～ 2 6 0
4 张才安等 .冷拔钢管质量 .重庆 :重庆大学出版社 ,1994.
5 Hiroshi Tanaka.Changes in wall-thickness distribution by hollow-sinking.Trans.JIM 1976 (17) :82 8～ 836
6 周亮 .管材空拔均壁作用研究 .锻压技术 ,1996 ,2 1(4 ) :2 5
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