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Abstract：
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By simplifying the geometry model of the copper bus bar continuous extrusion process,based on a new metal forming simulation package,MSC.Superforge,the copper bus bar continuous extending forming process was simula- ted,the optimum deforming quantity of copper rod pressed by coin wheel was 25% of copper rod diameter,the tem- perature distribution of billet in the extrusion wheel groove in the copper continuous extrusion process was analyzed, and temperature rising mainly rooted in metal plastic deformation.The results indicate that the pressure on the abut- ment of chamber comes to 528～600 MPa,sometimes,there is puckering circumfluence in the front of the upsetting zone of billet,which is one of the most important reasons leading to product surface quality defects,bigger air bubbles and broken thread when being hard drawn.In order to avoid quality defects caused by metal flowing and improve the useful life of the chamber,the designs of chamber and wheel should be optimized.
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Funds：
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国家自然科学基金重点资助项目(50635020)
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AuthorIntro：
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Reference：
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[1]宋宝韫，樊志新，陈吉光，等．铜、铝连续挤压技特点及工业应用[J]．稀有金属，2004，28(1)：257-261．
[2]刘元文，宋宝韫．铜扁线连续挤压技术[J]．锻压技术，2004，29(4)：49-50．
[3]谢玲玲，宋宝韫．铜母线连续挤压扩展成形过程的三维有限元数值模拟[J]．锻压技术，2005，30(4)：72-75．
[4]刘元文，宋宝韫，樊志新，等．铜扁线连续挤压工．锻压机械[J]：2002，37(5)：31-32．
[5]Wen Hong-yu,Dong Xiang-huai,Yan Cun-liang,et al.Met- al sheet forming numerical simulation based on meshless method[J].Forging & Stamping Technology,2006,31 (1):12.
[6]Cheng LV,Zhang Li-wen,Mu Zheng-jun,et al.3D coupled thermo-mechanical FEM simulation of forging process of TC4 alloy workpiece[J].Forging & Stamping Technology, 2007,32(1):28-31.
[7]黄光法，林高用，蒋杰，等．大挤压比铝型材挤压过程的效值模拟[J]．中国有色金属学报，2006，16(5)：887-892．
[8]李霞，张水忠．扁翼类零件挤压成形数值模拟及缺陷预测[J]．锻压技术，2005，30(2)：15-17．
[9]娄淑梅，赵国群，王锐，等．有限体积法在三维非稳态铝合金挤压过程模拟中的应用[J]．机械工程学报，2007，43 (2)：122-126．
[10]周飞，苏丹，彭颖红，等．金属塑性成形有限体积数值模拟[J]．模具技术，2002(3)：3-5．
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