The effect of the deformation condition on the axial compressive precision forming process of tube with curling die was investigated by using a rigid-plastic FEM. The results show that the forming accuracy depends mai...The effect of the deformation condition on the axial compressive precision forming process of tube with curling die was investigated by using a rigid-plastic FEM. The results show that the forming accuracy depends mainly on geometric condition rp/d0, little on tube material properties and friction condition; the relative gap △/2rp of double-walled tubes obtained decreases with Increasing rp/d0, and there is a parameter k for a given to/do or rp/t0, when rp/d0 >k, △/2rp< 1, otherwise △/2rp>1.展开更多
On the morning of April 19,Golden Dragon Precise Copper Tube Group Inc.held a groundbreaking ceremony for its 80,000-ton precise copper tube project in the Wenzhou Economic and Technological Development Zone.It’s lea...On the morning of April 19,Golden Dragon Precise Copper Tube Group Inc.held a groundbreaking ceremony for its 80,000-ton precise copper tube project in the Wenzhou Economic and Technological Development Zone.It’s learned that Golden Dragon Group’s Wanzhou precision copper tube project展开更多
基金The authors would like to thank NSFC for support toenable the performing of this research (No. 59775055).
文摘The effect of the deformation condition on the axial compressive precision forming process of tube with curling die was investigated by using a rigid-plastic FEM. The results show that the forming accuracy depends mainly on geometric condition rp/d0, little on tube material properties and friction condition; the relative gap △/2rp of double-walled tubes obtained decreases with Increasing rp/d0, and there is a parameter k for a given to/do or rp/t0, when rp/d0 >k, △/2rp< 1, otherwise △/2rp>1.
文摘On the morning of April 19,Golden Dragon Precise Copper Tube Group Inc.held a groundbreaking ceremony for its 80,000-ton precise copper tube project in the Wenzhou Economic and Technological Development Zone.It’s learned that Golden Dragon Group’s Wanzhou precision copper tube project
